/* ==========================================================================
   MMMUT WiFi Auto Login — Pure-Black & White 3D Portfolio Design System
   Philosophy: Matte Black • Brushed Silver • Pure White • Spatial 3D Depth
   ========================================================================== */

/* ── 1. Design Tokens (Strict Monochrome Black & White) ───────────────── */
:root {
  /* Surfaces & Canvas (Pure Obsidian Black & Charcoal Glass) */
  --color-canvas: #050505;
  --color-canvas-subtle: #0B0B0B;
  --color-surface: rgba(18, 18, 18, 0.82);
  --color-surface-solid: #121212;
  --color-surface-elevated: rgba(26, 26, 26, 0.9);
  --color-surface-hover: rgba(34, 34, 34, 0.95);
  --color-surface-active: #2A2A2A;
  --color-glass: rgba(255, 255, 255, 0.035);
  --color-glass-strong: rgba(255, 255, 255, 0.08);

  /* Typography (Crisp White, Platinum Silver & Muted Graphite) */
  --color-text-primary: #F5F5F3;
  --color-text-secondary: #A8A8A3;
  --color-text-muted: #70706B;
  --color-text-inverse: #050505;

  /* Monochrome Accents & 3D Specular Lighting */
  --color-accent-white: #FFFFFF;
  --color-accent-silver: #D4D4D0;
  --color-accent-chrome: #8E8E8A;

  /* Borders & Specular Highlights */
  --color-border-subtle: rgba(255, 255, 255, 0.07);
  --color-border-default: rgba(255, 255, 255, 0.13);
  --color-border-hover: rgba(255, 255, 255, 0.38);
  --color-border-strong: rgba(255, 255, 255, 0.62);

  /* Primary Button (Pure White on Matte Black) */
  --color-btn-bg: #F5F5F3;
  --color-btn-text: #050505;
  --color-btn-hover: #FFFFFF;

  /* Restrained Semantic Status */
  --color-status-success: #E5E5E0;
  --color-status-success-bg: rgba(255, 255, 255, 0.08);
  --color-status-success-border: rgba(255, 255, 255, 0.28);

  --color-status-warning: #D4D4D0;
  --color-status-warning-bg: rgba(255, 255, 255, 0.06);
  --color-status-warning-border: rgba(255, 255, 255, 0.22);

  --color-status-danger: #F87171;
  --color-status-danger-bg: rgba(248, 113, 113, 0.08);
  --color-status-danger-border: rgba(248, 113, 113, 0.25);

  /* Monochrome 3D Depth Shadows */
  --shadow-subtle: 0 4px 14px rgba(0, 0, 0, 0.65);
  --shadow-panel: 0 22px 50px -12px rgba(0, 0, 0, 0.88), 0 0 28px rgba(255, 255, 255, 0.03);
  --shadow-elevated: 0 32px 72px -12px rgba(0, 0, 0, 0.95), 0 0 40px rgba(255, 255, 255, 0.06);
  --shadow-3d-hover: 0 28px 60px -12px rgba(0, 0, 0, 0.95), 0 0 32px rgba(255, 255, 255, 0.09);

  /* Radii */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  /* Typography Stacks */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Consolas, monospace;

  /* Motion */
  --transition-fast: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 320ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 500ms cubic-bezier(0.22, 1, 0.36, 1);

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 920px;
}

/* ── 2. Reset & Spatial 3D Monochrome Canvas ──────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-canvas);
  color: var(--color-text-secondary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  perspective: 1400px;
}

/* Monochrome Ambient Silver-White Studio Lighting & 3D Floor Grid */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 20% 15%, rgba(255, 255, 255, 0.055) 0%, transparent 42%),
    radial-gradient(circle at 80% 25%, rgba(255, 255, 255, 0.04) 0%, transparent 45%),
    radial-gradient(circle at 50% 85%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
    linear-gradient(180deg, #050505 0%, #0A0A0A 50%, #050505 100%);
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: -40% -20% 0 -20%;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  transform: perspective(700px) rotateX(60deg) translateY(120px) translateZ(-120px);
  transform-origin: center bottom;
  mask-image: radial-gradient(ellipse at 50% 70%, rgba(0,0,0,0.85) 10%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 70%, rgba(0,0,0,0.85) 10%, transparent 72%);
  animation: spatialGridDrift 18s linear infinite;
  pointer-events: none;
}

@keyframes spatialGridDrift {
  0% { background-position: 0 0, 0 0; }
  100% { background-position: 0 56px, 56px 0; }
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

::selection {
  background: #FFFFFF;
  color: #050505;
}

:focus-visible {
  outline: 2px solid #FFFFFF;
  outline-offset: 2px;
}

/* ── 3. Typography & Monochrome 3D Text Effects ──────────────────────── */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-primary);
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.headline-hero {
  font-size: clamp(2.45rem, 5.2vw, 4.25rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.06;
  color: var(--color-text-primary);
  perspective: 900px;
  transform-style: preserve-3d;
  margin-top: 6px;
}

/* Animated Hero Text ("AUTOMATIC WIFI LOGIN. EVERY TIME.") — Liquid Silver & White */
.hero-line {
  display: block;
  transform-style: preserve-3d;
}

.hero-line-gradient {
  margin-bottom: 4px;
}

.word-3d {
  display: inline-block;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.38s cubic-bezier(0.22, 1, 0.36, 1), text-shadow 0.38s ease, filter 0.38s ease;
  animation: heroWordEntrance 0.9s cubic-bezier(0.16, 1, 0.3, 1) backwards;
  animation-delay: calc(var(--word-index, 0) * 110ms);
  cursor: default;
}

.hero-line-gradient .word-3d {
  background: linear-gradient(
    110deg,
    #FFFFFF 0%,
    #8A8A85 24%,
    #FFFFFF 48%,
    #A8A8A3 72%,
    #FFFFFF 100%
  );
  background-size: 260% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation:
    heroWordEntrance 0.9s cubic-bezier(0.16, 1, 0.3, 1) backwards,
    metallicSilverFlow 6s linear infinite;
  animation-delay: calc(var(--word-index, 0) * 110ms), 0s;
  filter: drop-shadow(0 8px 24px rgba(255, 255, 255, 0.14));
}

.hero-line-accent .word-3d {
  color: #FFFFFF;
  text-shadow:
    0 1px 0 #BDBDB8,
    0 2px 0 #787874,
    0 10px 28px rgba(255, 255, 255, 0.2);
}

.word-3d:hover {
  transform: translateZ(26px) translateY(-5px) rotateX(10deg) scale(1.04);
  filter: drop-shadow(0 14px 28px rgba(255, 255, 255, 0.35)) brightness(1.15);
}

.word-time {
  position: relative;
}

.word-time::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, #525250, #FFFFFF, #525250);
  background-size: 200% 100%;
  animation: underlinePulse 3.5s ease-in-out infinite;
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.45);
}

.hero-period-pulse {
  display: inline-block;
  color: #FFFFFF;
  animation: dotGlowPulse 2.2s ease-in-out infinite;
}

@keyframes heroWordEntrance {
  0% {
    opacity: 0;
    transform: perspective(800px) translateY(38px) rotateX(-55deg) translateZ(-40px);
    filter: blur(8px);
  }
  100% {
    opacity: 1;
    transform: perspective(800px) translateY(0) rotateX(0deg) translateZ(0);
    filter: blur(0);
  }
}

@keyframes metallicSilverFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 260% 50%; }
}

@keyframes underlinePulse {
  0%, 100% { background-position: 0% 50%; transform: scaleX(0.94); opacity: 0.75; }
  50% { background-position: 100% 50%; transform: scaleX(1.03); opacity: 1; }
}

@keyframes dotGlowPulse {
  0%, 100% { text-shadow: 0 0 8px rgba(255, 255, 255, 0.35); transform: scale(1); }
  50% { text-shadow: 0 0 22px rgba(255, 255, 255, 0.95); transform: scale(1.18); color: #FFFFFF; }
}

/* Section Headlines with Platinum Shimmer Hover */
.headline-section {
  font-size: clamp(1.85rem, 3.2vw, 2.65rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  background: linear-gradient(135deg, #FFFFFF 0%, #D4D4D0 60%, #8A8A85 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transition: transform var(--transition-base), filter var(--transition-base);
  display: inline-block;
}

.headline-section:hover {
  transform: translateY(-2px);
  filter: drop-shadow(0 8px 22px rgba(255, 255, 255, 0.2));
}

.headline-card {
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.35;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.body-large {
  font-size: 1.06rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.body-medium {
  font-size: 0.94rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.body-small {
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.code-inline {
  font-family: var(--font-mono);
  font-size: 0.82em;
  padding: 0.18em 0.5em;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-xs);
  color: #F5F5F3;
  transition: all var(--transition-fast);
}

.code-inline:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.45);
  color: #FFFFFF;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.18);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border-default);
  margin-bottom: 14px;
}

/* ── 4. Layout & Containers ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 28px;
  padding-right: 28px;
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-top: 92px;
  padding-bottom: 92px;
  position: relative;
}

.section-header {
  max-width: 700px;
  margin-bottom: 52px;
}

.section-header.centered {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-header p {
  margin-top: 14px;
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.2) 50%, transparent 100%);
  border: none;
}

/* ── 5. Navigation Bar (Matte Black 3D Frosted Header) ───────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(5, 5, 5, 0.84);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: all var(--transition-base);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.015em;
  transition: transform var(--transition-fast);
}

.brand-link:hover {
  transform: translateY(-1px);
}

.brand-icon-wrapper {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.6);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.brand-link:hover .brand-icon-wrapper {
  transform: rotate(-6deg) scale(1.06);
  border-color: #FFFFFF;
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-pill);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  padding: 4px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-pill);
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  position: relative;
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
  color: #050505;
  background: #F5F5F3;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(255, 255, 255, 0.18);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: 1px solid var(--color-border-default);
}

.mobile-nav-menu {
  display: none;
  flex-direction: column;
  padding: 14px 24px 20px 24px;
  background: rgba(10, 10, 10, 0.96);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-default);
  gap: 6px;
}

.mobile-nav-menu.open {
  display: flex;
}

.mobile-nav-menu .nav-link {
  padding: 10px 14px;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
}

/* ── 6. Monochrome 3D Buttons & Hover Effects ────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-20deg);
  transition: left 0.55s ease;
  pointer-events: none;
}

.btn:hover::before {
  left: 140%;
}

.btn-sm {
  font-size: 0.825rem;
  padding: 9px 16px;
}

.btn-md {
  font-size: 0.9rem;
  padding: 12px 20px;
}

.btn-lg {
  font-size: 0.96rem;
  padding: 14px 26px;
}

.btn-primary {
  background: linear-gradient(135deg, #FFFFFF 0%, #DFDFDA 100%);
  color: #050505;
  border: 1px solid #FFFFFF;
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.14), 0 2px 6px rgba(0, 0, 0, 0.6);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  background: #FFFFFF;
  color: #000000;
  box-shadow: 0 14px 34px rgba(255, 255, 255, 0.26), 0 0 18px rgba(255, 255, 255, 0.2);
}

.btn-primary:active {
  transform: translateY(0) scale(0.99);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-default);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
}

.btn-secondary:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-border-hover);
  color: #FFFFFF;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.75), 0 0 20px rgba(255, 255, 255, 0.12);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-xs);
  background: var(--color-surface);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #FFFFFF;
  border-color: var(--color-border-hover);
  transform: scale(1.06);
}

/* ── 7. Badges & Monochrome Pills ────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
  backdrop-filter: blur(8px);
}

.badge-muted {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--color-border-subtle);
  color: var(--color-text-muted);
}

.badge-accent {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  color: #FFFFFF;
}

.badge-success {
  background: var(--color-status-success-bg);
  border-color: var(--color-status-success-border);
  color: var(--color-status-success);
}

.pulse-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #FFFFFF;
  display: inline-block;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.9);
  animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.35); opacity: 0.55; }
}

/* ── 8. Hero Section (Monochrome 3D Portfolio Stage) ─────────────────── */
.hero-section {
  padding-top: 72px;
  padding-bottom: 96px;
  position: relative;
  overflow: visible;
}

/* Ambient Monochrome White-Silver Spotlight Orb */
.hero-section::before {
  content: "";
  position: absolute;
  top: 10%;
  right: 8%;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.11) 0%, rgba(255, 255, 255, 0.04) 45%, transparent 72%);
  filter: blur(60px);
  z-index: -1;
  pointer-events: none;
  animation: orbFloat 10s ease-in-out infinite alternate;
}

@keyframes orbFloat {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-25px, 20px) scale(1.08); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 56px;
}

.hero-content-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  z-index: 2;
}

.hero-hook {
  margin-bottom: 22px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid var(--color-border-default);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-subtle);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.hero-hook:hover {
  transform: translateY(-3px) translateZ(12px);
  border-color: var(--color-border-hover);
  box-shadow: 0 12px 30px rgba(255, 255, 255, 0.08);
}

.hero-hook-question {
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 1.9vw, 1.4rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.hero-hook-supporting {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  max-width: 520px;
}

.hero-subtitle {
  font-size: 1.06rem;
  line-height: 1.68;
  color: var(--color-text-secondary);
  margin-top: 22px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  flex-wrap: wrap;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border-subtle);
  transition: all var(--transition-fast);
}

.meta-item:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-border-hover);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.smartscreen-notice {
  margin-top: 24px;
  padding: 14px 18px;
  background: rgba(16, 16, 16, 0.8);
  border: 1px solid var(--color-border-default);
  border-left: 3px solid #FFFFFF;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  max-width: 540px;
  backdrop-filter: blur(10px);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.smartscreen-notice:hover {
  border-color: var(--color-border-hover);
  transform: translateX(3px);
}

.smartscreen-notice svg {
  flex-shrink: 0;
  color: #FFFFFF;
  margin-top: 2px;
}

.smartscreen-notice strong {
  color: var(--color-text-primary);
}

/* ── 9. Hero Right: 3D Screenshot Showcase Stage (Monochrome) ────────── */
.hero-product-right {
  perspective: 1400px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.product-showcase-3d {
  position: relative;
  width: 100%;
  max-width: 430px;
  transform-style: preserve-3d;
  transform: rotateY(-10deg) rotateX(6deg);
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease;
  cursor: pointer;
}

.product-showcase-3d:hover {
  transform: rotateY(0deg) rotateX(0deg) translateY(-6px) scale(1.02);
}

/* Glowing Monochrome Backplate behind Screenshot */
.showcase-glow-backdrop {
  position: absolute;
  inset: -14px;
  border-radius: calc(var(--radius-lg) + 6px);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.22), rgba(180, 180, 175, 0.12), rgba(255, 255, 255, 0.06));
  filter: blur(28px);
  opacity: 0.6;
  transform: translateZ(-35px);
  transition: opacity var(--transition-base), filter var(--transition-base);
  pointer-events: none;
}

.product-showcase-3d:hover .showcase-glow-backdrop {
  opacity: 0.9;
  filter: blur(36px);
}

/* 3D Glass Bezel Holding the Real App Screenshot */
.screenshot-bezel-3d {
  position: relative;
  border-radius: var(--radius-md);
  padding: 10px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(255, 255, 255, 0.24);
  box-shadow:
    0 30px 60px -12px rgba(0, 0, 0, 0.9),
    0 0 0 1px rgba(255, 255, 255, 0.08) inset;
  backdrop-filter: blur(16px);
  transform-style: preserve-3d;
  overflow: hidden;
}

/* Dynamic Specular Glare Overlay */
.screenshot-bezel-3d::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    420px circle at var(--mouse-x, 30%) var(--mouse-y, 20%),
    rgba(255, 255, 255, 0.18),
    transparent 60%
  );
  pointer-events: none;
  z-index: 3;
}

.hero-app-screenshot {
  width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.65);
  transform: translateZ(12px);
  transition: transform var(--transition-base);
}

/* Floating 3D Parallax Badges Around Screenshot */
.floating-3d-badge {
  position: absolute;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: rgba(10, 10, 10, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(14px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.75), 0 0 18px rgba(255, 255, 255, 0.08);
  font-size: 0.76rem;
  font-weight: 600;
  color: #FFFFFF;
  transform: translateZ(42px);
  pointer-events: none;
  white-space: nowrap;
}

.floating-badge-top-left {
  top: 22px;
  left: -26px;
  animation: badgeFloat1 5s ease-in-out infinite;
}

.floating-badge-bottom-right {
  bottom: 36px;
  right: -24px;
  animation: badgeFloat2 6s ease-in-out infinite;
}

.floating-badge-bottom-left {
  bottom: -14px;
  left: 18px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-primary);
  border-color: rgba(255, 255, 255, 0.3);
}

@keyframes badgeFloat1 {
  0%, 100% { transform: translateZ(42px) translateY(0px); }
  50% { transform: translateZ(48px) translateY(-7px); }
}

@keyframes badgeFloat2 {
  0%, 100% { transform: translateZ(42px) translateY(0px); }
  50% { transform: translateZ(48px) translateY(7px); }
}

/* ── 10. 3D Interactive Cards & Editorial Feature Rows (Monochrome) ──── */
.tilt-card,
.editorial-featured-row,
.editorial-duo-card,
.spec-sheet-item,
.step-item,
.privacy-editorial,
.team-card,
.feedback-panel,
.feedback-side-card,
.mission-panel {
  position: relative;
  background: linear-gradient(145deg, rgba(22, 22, 22, 0.85) 0%, rgba(10, 10, 10, 0.92) 100%);
  border: 1px solid var(--color-border-default);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transform-style: preserve-3d;
  transition:
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    border-color 0.3s ease,
    box-shadow 0.35s ease;
  overflow: hidden;
}

/* Mouse-tracked Monochrome Specular Glare on Cards */
.tilt-card::before,
.editorial-featured-row::before,
.editorial-duo-card::before,
.spec-sheet-item::before,
.team-card::before,
.feedback-panel::before,
.feedback-side-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    500px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(255, 255, 255, 0.09),
    transparent 45%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
  z-index: 0;
}

.tilt-card:hover::before,
.editorial-featured-row:hover::before,
.editorial-duo-card:hover::before,
.spec-sheet-item:hover::before,
.team-card:hover::before,
.feedback-panel:hover::before,
.feedback-side-card:hover::before {
  opacity: 1;
}

.editorial-featured-row > *,
.editorial-duo-card > *,
.spec-sheet-item > *,
.team-card > *,
.feedback-panel > *,
.feedback-side-card > * {
  position: relative;
  z-index: 1;
}

.editorial-feature-group {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-top: 36px;
}

.editorial-featured-row {
  border-radius: var(--radius-lg);
  padding: 38px 36px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
  box-shadow: var(--shadow-panel);
}

.editorial-featured-row:hover,
.editorial-duo-card:hover,
.spec-sheet-item:hover,
.team-card:hover,
.feedback-side-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-3d-hover);
  transform: translateY(-6px) rotateX(var(--rx, 2deg)) rotateY(var(--ry, -2deg));
}

.editorial-featured-title {
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.25;
}

.editorial-duo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.editorial-duo-card {
  border-radius: var(--radius-lg);
  padding: 32px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-panel);
}

.spec-sheet-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 14px;
}

.spec-sheet-item {
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-subtle);
}

.feature-icon-3d {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  margin-bottom: 16px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
  transition: transform var(--transition-base), border-color var(--transition-fast);
}

.editorial-featured-row:hover .feature-icon-3d,
.editorial-duo-card:hover .feature-icon-3d,
.spec-sheet-item:hover .feature-icon-3d {
  transform: translateZ(18px) scale(1.1) rotate(-5deg);
  border-color: #FFFFFF;
}

/* ── 11. How It Works (3D Step Cards) ────────────────────────────────── */
.steps-editorial {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.step-item {
  padding: 32px 26px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-subtle);
}

.step-item:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-3d-hover);
  transform: translateY(-8px) scale(1.01);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #FFFFFF, #787874);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.02em;
}

.step-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

/* ── 12. Privacy & Open Source ───────────────────────────────────────── */
.privacy-editorial {
  border-radius: var(--radius-lg);
  padding: 46px 42px;
  box-shadow: var(--shadow-panel);
}

.privacy-header-wrap {
  max-width: 640px;
  margin-bottom: 34px;
}

.privacy-specs-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 30px;
}

.privacy-spec-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.privacy-spec-col:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-border-default);
  transform: translateY(-3px);
}

.privacy-spec-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.privacy-actions {
  display: flex;
  gap: 14px;
  margin-top: 34px;
  flex-wrap: wrap;
}

/* ── 13. Team Profiles Layout (Monochrome 3D Portfolio Cards) ────────── */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 36px;
}

.team-card {
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-panel);
}

.team-header {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 26px;
}

.team-avatar {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.05));
  border: 1px solid rgba(255, 255, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: #FFFFFF;
  flex-shrink: 0;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.65);
  transition: transform var(--transition-base), border-color var(--transition-fast);
}

.team-card:hover .team-avatar {
  transform: translateZ(20px) scale(1.08) rotate(-4deg);
  border-color: #FFFFFF;
}

.team-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.team-name {
  font-size: 1.38rem;
  font-weight: 800;
  color: var(--color-text-primary);
}

.team-role-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.team-rows {
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.team-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-bottom: 11px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.team-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.team-row-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.team-row-value {
  font-size: 0.94rem;
  color: var(--color-text-primary);
}

.team-row-value a {
  color: var(--color-text-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.team-row-value a:hover {
  color: #FFFFFF;
  border-bottom-color: #FFFFFF;
}

.team-row-value.mono {
  font-family: var(--font-mono);
  color: var(--color-text-primary);
}

.team-social-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border-subtle);
  flex-wrap: wrap;
}

.team-contact-btn {
  flex: 1;
  min-width: 120px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.83rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.team-contact-btn:hover,
.team-contact-btn.linkedin:hover {
  background: #FFFFFF;
  border-color: #FFFFFF;
  color: #050505;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 255, 255, 0.18);
}

.mission-panel {
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  margin-top: 36px;
  text-align: center;
  box-shadow: var(--shadow-panel);
}

/* ── 14. Feedback Page (Monochrome 3D Portfolio Studio Layout) ───────── */
.feedback-studio-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 28px;
  align-items: start;
}

.feedback-sidebar {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.feedback-side-card {
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  box-shadow: var(--shadow-panel);
}

.heart-pulse-btn {
  width: 100%;
  margin-top: 16px;
  padding: 13px 18px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all var(--transition-base);
}

.heart-pulse-btn:hover:not(:disabled) {
  transform: translateY(-3px) scale(1.01);
  background: #FFFFFF;
  color: #050505;
  border-color: #FFFFFF;
  box-shadow: 0 12px 28px rgba(255, 255, 255, 0.2);
}

.heart-pulse-btn.liked {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.45);
  color: #FFFFFF;
}

.feedback-highlight-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.feedback-highlight-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--color-text-secondary);
}

.feedback-highlight-list svg {
  flex-shrink: 0;
  color: #FFFFFF;
  margin-top: 3px;
}

.feedback-panel {
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  width: 100%;
  box-shadow: var(--shadow-panel);
}

.m3-form {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.optional-tag {
  font-size: 0.74rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

/* Monochrome Category Selector Pills */
.category-pills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.category-pill-btn {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-fast);
}

.category-pill-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
}

.category-pill-btn.active {
  background: #F5F5F3;
  border-color: #FFFFFF;
  color: #050505;
  box-shadow: 0 6px 18px rgba(255, 255, 255, 0.16);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: rgba(5, 5, 5, 0.8);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  padding: 12px 15px;
  color: var(--color-text-primary);
  font-size: 0.925rem;
  transition: all var(--transition-fast);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: #FFFFFF;
  background-color: #101010;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.12);
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23A8A8A3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-select option {
  background-color: #0B0B0B;
  color: #F5F5F3;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

/* 3D Star Rating Studio (Monochrome Platinum/White Stars) */
.star-rating-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(5, 5, 5, 0.65);
  border: 1px solid var(--color-border-subtle);
}

.star-rating-input {
  display: inline-flex;
  flex-direction: row-reverse;
  justify-content: center;
  gap: 8px;
}

.star-rating-input input {
  display: none;
}

.star-rating-input label {
  font-size: 2.1rem;
  color: #2A2A2A;
  cursor: pointer;
  transition: transform var(--transition-fast), color var(--transition-fast), text-shadow var(--transition-fast);
  user-select: none;
}

.star-rating-input label:hover {
  transform: scale(1.22) translateY(-2px);
}

.star-rating-input label:hover,
.star-rating-input label:hover ~ label,
.star-rating-input input:checked ~ label {
  color: #FFFFFF;
  text-shadow: 0 0 18px rgba(255, 255, 255, 0.55);
}

.rating-display-label {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: center;
  min-height: 20px;
}

/* Status Notifications */
.status-msg {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  line-height: 1.5;
  text-align: center;
  margin-top: 8px;
}

.status-msg:not(:empty) {
  display: block;
}

.status-loading {
  background: var(--color-surface);
  border: 1px solid var(--color-border-default);
  color: var(--color-text-secondary);
}

.status-success {
  background: var(--color-status-success-bg);
  border: 1px solid var(--color-status-success-border);
  color: var(--color-status-success);
}

.status-error {
  background: var(--color-status-danger-bg);
  border: 1px solid var(--color-status-danger-border);
  color: var(--color-status-danger);
}

.status-warning {
  background: var(--color-status-warning-bg);
  border: 1px solid var(--color-status-warning-border);
  color: var(--color-status-warning);
}

.privacy-notice {
  margin-top: 22px;
  padding: 14px 16px;
  background: rgba(5, 5, 5, 0.7);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.79rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.privacy-notice svg {
  flex-shrink: 0;
  color: #FFFFFF;
  margin-top: 2px;
}

.privacy-notice strong {
  color: var(--color-text-secondary);
}

/* ── 15. Footer (MIT License Removed) ────────────────────────────────── */
.site-footer {
  margin-top: auto;
  background: rgba(5, 5, 5, 0.94);
  border-top: 1px solid var(--color-border-subtle);
  padding: 60px 0 34px 0;
  backdrop-filter: blur(16px);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-border-subtle);
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 340px;
}

.footer-brand p {
  margin-top: 12px;
  font-size: 0.86rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer-links-group {
  display: flex;
  gap: 52px;
  flex-wrap: wrap;
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-column-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.footer-link {
  font-size: 0.86rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.footer-link:hover {
  color: #FFFFFF;
  transform: translateX(3px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ── 16. Modal Overlays (System Docs & Screenshot Lightbox) ──────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.active {
  display: flex;
}

.modal-surface {
  width: 100%;
  max-width: 720px;
  max-height: 85vh;
  background: #0C0C0C;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-elevated);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border-subtle);
  background: #060606;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.modal-body h1, .modal-body h2, .modal-body h3 {
  color: var(--color-text-primary);
  margin-top: 20px;
  margin-bottom: 10px;
}

.modal-footer {
  padding: 14px 24px;
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  justify-content: flex-end;
  background: #060606;
}

/* ── 17. Responsive Media Queries ────────────────────────────────────── */
@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .product-showcase-3d {
    transform: none;
    max-width: 400px;
  }

  .editorial-featured-row,
  .editorial-duo-grid,
  .spec-sheet-grid,
  .privacy-specs-list,
  .team-grid,
  .feedback-studio-grid {
    grid-template-columns: 1fr;
  }

  .steps-editorial {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .nav-links {
    display: none;
  }

  .mobile-nav-toggle {
    display: flex;
  }

  .steps-editorial,
  .form-row-2,
  .category-pills {
    grid-template-columns: 1fr;
  }

  .floating-badge-top-left,
  .floating-badge-bottom-right {
    display: none;
  }

  .footer-top,
  .footer-links-group,
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .editorial-featured-row,
  .privacy-editorial,
  .feedback-panel,
  .team-card {
    padding: 26px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}


/* ==========================================================================
   18. Dedicated Features Page — Version-Wise Scroll-Stacking (V1 → V2 → V3)
   ========================================================================== */

.features-page-main {
  position: relative;
  overflow-x: clip;
  background-color: #050505;
}

/* Minimal Top Version Timeline Bar (Keeps V1 Immediately Visible on Load) */
.version-timeline-bar {
  padding: 14px 0;
  background: rgba(5, 5, 5, 0.92);
  border-bottom: 1px solid var(--color-border-subtle);
  position: relative;
  z-index: 25;
}

.version-timeline-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.version-timeline-title-group {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.version-timeline-heading {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin: 0;
}

.version-timeline-sep {
  color: var(--color-border-strong);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.version-timeline-sub {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin: 0;
}

.features-index-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.version-arrow-sep {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  user-select: none;
}

.features-index-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-default);
  background: rgba(255, 255, 255, 0.02);
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
}

.features-index-pill span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.features-index-pill:hover,
.features-index-pill.active {
  border-color: #FFFFFF;
  color: #050505;
  background: #F5F5F3;
}

.features-index-pill:hover span,
.features-index-pill.active span {
  color: #050505;
}

/* Stacked Overlapping Version Chapters (V1 -> V2 -> V3) */
.features-stack-container {
  position: relative;
  width: 100%;
}

.feature-stack-section {
  position: relative;
  width: 100%;
  z-index: calc(10 + var(--stack-index, 1));
}

.feature-sheet-surface {
  width: 100%;
  background-color: #050505;
  border-top: 1px solid var(--color-border-default);
  transition: transform 0.12s linear, opacity 0.12s linear;
  will-change: transform, opacity;
}

/* Distinct Restrained Monochrome Surfaces for V1, V2, and V3 */
.version-chapter-v1 .feature-sheet-surface {
  background-color: #050505;
  background-image: radial-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 24px 24px;
  border-top-color: rgba(255, 255, 255, 0.1);
}

.version-chapter-v2 .feature-sheet-surface {
  background-color: #0A0A0A;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.version-chapter-v3 .feature-sheet-surface {
  background-color: #101010;
  border-top: 1px solid rgba(255, 255, 255, 0.28);
}

/* Desktop Sticky Scroll-Stacking (V1 -> V2 -> V3) */
@media (min-width: 961px) and (min-height: 620px) and (prefers-reduced-motion: no-preference) {
  .feature-stack-section {
    position: sticky;
    top: 70px;
    min-height: calc(100vh - 70px);
    min-height: calc(100dvh - 70px);
    display: flex;
    align-items: stretch;
  }

  .feature-sheet-surface {
    min-height: calc(100vh - 70px);
    min-height: calc(100dvh - 70px);
    display: flex;
    align-items: center;
    box-shadow: 0 -28px 64px rgba(0, 0, 0, 0.94);
    transform: scale(var(--sheet-scale, 1));
    opacity: var(--sheet-opacity, 1);
    transform-origin: center top;
  }

  .feature-stack-section.is-covered {
    pointer-events: none;
  }
}

.feature-sheet-Container {
  padding-top: 40px;
  padding-bottom: 40px;
  width: 100%;
}

/* Two-Column Editorial Version Composition */
.feature-editorial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
}

@media (min-width: 961px) {
  .feature-editorial-grid.feature-grid-reversed .feature-editorial-copy {
    order: 2;
  }
  .feature-editorial-grid.feature-grid-reversed .feature-editorial-visual {
    order: 1;
  }
}

.feature-editorial-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* Monumental V1 / V2 / V3 Version Header Row */
.version-label-row {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 10px;
}

.version-giant-label {
  font-family: var(--font-display);
  font-size: clamp(3.6rem, 6.2vw, 5.4rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.05em;
  color: #FFFFFF;
}

.version-chapter-v1 .version-giant-label {
  color: #D4D4D0;
}

.version-chapter-v2 .version-giant-label {
  color: #EDEDEB;
}

.version-chapter-v3 .version-giant-label {
  color: #FFFFFF;
}

.version-meta-stack {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 16px;
  border-left: 2px solid var(--color-border-strong);
}

.version-chapter-step {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
}

.version-release-tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--color-text-muted);
}

.feature-editorial-heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 2.8vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.14;
  color: var(--color-text-primary);
  margin-bottom: 10px;
}

.feature-editorial-lead {
  font-size: 0.95rem;
  line-height: 1.58;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  max-width: 540px;
}

/* Concise 3-4 Highlight List per Version */
.version-highlights-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 16px;
  margin: 0;
}

.version-highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.version-highlight-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.version-highlight-marker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 3px 7px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-subtle);
  flex-shrink: 0;
  margin-top: 2px;
}

.version-highlight-body {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.version-highlight-body strong {
  font-family: var(--font-display);
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.version-highlight-body p {
  font-size: 0.84rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
  margin: 0;
}

/* Visual Column Frames */
.feature-editorial-visual {
  width: 100%;
  display: flex;
  justify-content: center;
}

.feature-visual-frame {
  width: 100%;
  background: #0C0C0C;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-panel);
  margin: 0;
}

.feature-visual-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: #070707;
  border-bottom: 1px solid var(--color-border-subtle);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-muted);
  gap: 8px;
  flex-wrap: wrap;
}

.feature-visual-bar-title {
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ── V1 Visual: Direct HTTP POST & XML Response ──────────────────────── */
.v1-code-showcase {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: #090909;
}

.v1-endpoint-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  background: #121212;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  flex-wrap: wrap;
}

.v1-method-badge {
  padding: 2px 8px;
  background: #F5F5F3;
  color: #050505;
  font-weight: 700;
  border-radius: 3px;
  font-size: 0.68rem;
}

.v1-endpoint-url {
  color: var(--color-text-primary);
  flex: 1;
}

.v1-status-tag {
  color: var(--color-text-muted);
  font-size: 0.7rem;
}

.v1-code-pre {
  margin: 0;
  padding: 14px;
  background: #050505;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  overflow-x: auto;
}

.v1-xml-response {
  padding: 12px 14px;
  background: #121212;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xs);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.v1-xml-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.v1-xml-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.v1-xml-note {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-primary);
}

/* ── V2 Visual: Signal Scan + Keyring + Failover Architecture ────────── */
.v2-architecture-stack {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #0D0D0D;
}

.v2-arch-card {
  padding: 14px;
  background: #141414;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xs);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.v2-arch-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  gap: 8px;
  flex-wrap: wrap;
}

.v2-arch-module {
  color: var(--color-text-primary);
  font-weight: 600;
}

.v2-arch-badge {
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-default);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-secondary);
}

.v2-arch-title {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.v2-ap-bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.v2-ap-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  background: #0A0A0A;
  border: 1px solid var(--color-border-subtle);
  border-radius: 4px;
  font-size: 0.76rem;
  color: var(--color-text-muted);
}

.v2-ap-selected {
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
}

.v2-ap-signal {
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.v2-failover-flow {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.v2-failover-node {
  padding: 9px 10px;
  background: #0A0A0A;
  border: 1px solid var(--color-border-subtle);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.v2-node-active {
  border-color: var(--color-border-strong);
  background: #181818;
}

.v2-node-label {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.v2-node-state {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-text-secondary);
}

.v2-arch-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.74rem;
  color: var(--color-text-muted);
  padding-top: 2px;
}

/* ── V3 Visual: Genuine v3.0.0 Screenshot + Floating Popup + Telemetry ── */
.v3-composite-showcase {
  width: 100%;
}

.v3-visual-body {
  padding: 16px;
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 14px;
  align-items: center;
  background: #0C0C0C;
}

.v3-screenshot-col {
  display: flex;
  justify-content: center;
  align-items: center;
}

.v3-screenshot-img {
  max-height: 360px;
  width: auto;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.85);
}

.v3-side-details {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Floating Popup Window Replica (popup.py 380x175) */
.popup-window-replica {
  width: 100%;
  background: #F8FAFC;
  color: #0F172A;
  border-radius: 7px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.8);
  overflow: hidden;
}

.popup-replica-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: #F1F5F9;
  border-bottom: 1px solid #E2E8F0;
  font-size: 0.7rem;
  color: #334155;
}

.popup-replica-title-left {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.popup-replica-icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #0F172A;
  display: inline-block;
}

.popup-replica-win-btns {
  display: flex;
  gap: 8px;
  font-size: 0.68rem;
  color: #64748B;
}

.popup-replica-body {
  padding: 12px;
}

.popup-replica-header {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.popup-replica-brand {
  font-size: 0.92rem;
  font-weight: 700;
  color: #0F172A;
}

.popup-replica-ver {
  font-size: 0.7rem;
  color: #64748B;
}

.popup-replica-status {
  margin: 8px 0 10px 0;
  font-size: 0.78rem;
  font-weight: 600;
  color: #0F172A;
}

.popup-replica-sep {
  height: 1px;
  background: #CBD5E1;
  margin-bottom: 8px;
}

.popup-replica-actions {
  display: flex;
  align-items: center;
  gap: 5px;
}

.popup-btn-item {
  flex: 1;
  text-align: center;
  padding: 4px 5px;
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 600;
  color: #0F172A;
  white-space: nowrap;
}

.popup-btn-close {
  flex: 0 0 24px;
}

.v3-telemetry-mini {
  padding: 12px;
  background: #141414;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xs);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.v3-telemetry-mini-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--color-text-primary);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.v3-telemetry-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.v3-mini-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.v3-mini-val {
  display: block;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* Mobile, Tablet & Short Viewport Fallback (Normal Accessible Flow) */
@media (max-width: 960px), (max-height: 619px) {
  .feature-stack-section {
    position: relative !important;
    top: auto !important;
    min-height: auto !important;
  }

  .feature-sheet-surface {
    min-height: auto !important;
    transform: none !important;
    opacity: 1 !important;
    box-shadow: none !important;
  }

  .feature-editorial-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .feature-editorial-copy {
    order: 1 !important;
  }

  .feature-editorial-visual {
    order: 2 !important;
  }
}

@media (max-width: 640px) {
  .version-timeline-sub,
  .version-timeline-sep {
    display: none;
  }

  .feature-sheet-Container {
    padding-top: 32px;
    padding-bottom: 32px;
  }

  .v2-failover-flow,
  .v3-visual-body,
  .v3-telemetry-mini-grid {
    grid-template-columns: 1fr;
  }

  .popup-replica-actions {
    flex-wrap: wrap;
  }
}

/* ==========================================================================
   FEATURES DIRECTORY — CLEAN, PREMIUM & ACCESSIBLE
   Thoughtfully spaced, no code blocks, no widgets, fully responsive
   ========================================================================== */

.features-hero-clean {
  text-align: center;
  padding: clamp(48px, 7vw, 76px) 20px clamp(28px, 4vw, 44px) 20px;
  max-width: 840px;
  margin: 0 auto;
  position: relative;
}

.features-hero-glow {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: clamp(300px, 60vw, 700px);
  height: clamp(200px, 40vw, 380px);
  background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.features-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-default);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.features-hero-clean h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.8vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.12;
  color: #FFFFFF;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.features-hero-clean p {
  font-size: clamp(1rem, 1.8vw, 1.12rem);
  line-height: 1.65;
  color: var(--color-text-secondary);
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ── Filter Toolbar ────────────────────────────────────────────────────── */
.features-toolbar {
  position: sticky;
  top: 64px;
  z-index: 40;
  background: rgba(5, 5, 5, 0.92);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
  padding: 14px 0;
  margin-bottom: 40px;
}

.features-toolbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.features-filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 2px 0;
}

.features-filter-group::-webkit-scrollbar {
  display: none;
}

.features-filter-btn {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.features-filter-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border-color: var(--color-border-default);
}

.features-filter-btn.active {
  background: #FFFFFF;
  color: #050505;
  border-color: #FFFFFF;
  font-weight: 600;
}

.features-search-clean {
  position: relative;
  min-width: 220px;
}

.features-search-clean input {
  width: 100%;
  padding: 8px 12px 8px 34px;
  background: #111111;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: #FFFFFF;
  outline: none;
  font-family: var(--font-sans);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.features-search-clean input:focus {
  border-color: var(--color-border-strong);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

.features-search-clean svg {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* ── Clean Features Grid ───────────────────────────────────────────────── */
.features-grid-clean {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
  margin-bottom: 70px;
}

.feature-card-clean {
  background: rgba(18, 18, 18, 0.7);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  backdrop-filter: blur(14px);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  position: relative;
}

.feature-card-clean:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.8), 0 0 24px rgba(255, 255, 255, 0.04);
}

.feature-card-clean.is-hidden {
  display: none !important;
}

.feature-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.feature-icon-bubble {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  flex-shrink: 0;
}

.feature-badge-clean {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border-subtle);
}

.feature-badge-v3 {
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.35);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.feature-badge-v3::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.9);
}

.feature-title-clean {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: #FFFFFF;
  line-height: 1.25;
  margin: 0;
}

.feature-desc-clean {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
  flex-grow: 1;
}

.feature-tags-clean {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-tag-clean {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.03);
  padding: 2px 7px;
  border-radius: 4px;
}

/* Empty State when search returns no match */
.features-empty-state {
  display: none;
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.features-empty-state.is-visible {
  display: block;
}

@media (max-width: 768px) {
  .features-grid-clean {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .features-toolbar-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .features-search-clean {
    width: 100%;
  }

  .features-filter-group {
    width: 100%;
    padding-bottom: 4px;
  }
}