/* ==========================================================================
   NEEON (네온) CORPORATE WEBSITE STYLESHEET
   Strict BEM Methodology & Production-Grade Vanilla CSS
   Light & Dark Theme Support (Default: Light Theme)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & CSS Variables (Default: Light Theme)
   -------------------------------------------------------------------------- */
:root,
[data-theme="light"] {
  /* Background Color Palette */
  --color-bg-deep: #edf2f7;
  --color-bg-primary: #f8fafc;
  --color-bg-surface: #ffffff;
  --color-bg-surface-elevated: #ffffff;
  --color-bg-card: rgba(255, 255, 255, 0.88);
  --color-bg-glass: rgba(248, 250, 252, 0.82);
  --color-bg-glass-heavy: rgba(255, 255, 255, 0.95);

  /* Neon Accent Tokens (High Contrast & Vibrancy on Light) */
  --color-neon-cyan: #0284c7;
  --color-neon-cyan-glow: rgba(2, 132, 199, 0.22);
  --color-neon-cyan-subtle: rgba(2, 132, 199, 0.08);

  --color-neon-green: #059669;
  --color-neon-green-glow: rgba(5, 150, 105, 0.2);
  --color-neon-green-subtle: rgba(5, 150, 105, 0.08);

  --color-neon-purple: #7c3aed;
  --color-neon-purple-glow: rgba(124, 58, 237, 0.2);
  --color-neon-purple-subtle: rgba(124, 58, 237, 0.08);

  --color-neon-magenta: #e11d48;
  --color-neon-magenta-glow: rgba(225, 29, 72, 0.2);

  --color-neon-yellow: #d97706;

  /* Text Colors */
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;
  --color-text-inverse: #ffffff;

  /* Borders & Dividers */
  --color-border-subtle: rgba(15, 23, 42, 0.08);
  --color-border-hover: rgba(15, 23, 42, 0.2);
  --color-border-cyan: rgba(2, 132, 199, 0.35);

  /* Shadows & Glows */
  --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-card: 0 10px 25px rgba(15, 23, 42, 0.06);
  --shadow-elevated:
    0 20px 40px rgba(15, 23, 42, 0.1), 0 0 25px rgba(2, 132, 199, 0.12);
  --glow-cyan-lg: 0 0 35px rgba(2, 132, 199, 0.2);
  --glow-green-lg: 0 0 35px rgba(5, 150, 105, 0.2);
  --glow-purple-lg: 0 0 35px rgba(124, 58, 237, 0.2);

  /* Brand Wave Tokens (Light Theme: Refined Slate with Fluorescent Neon Surge) */
  --logo-icon-base: #0f172a;
  --logo-icon-peak: #39ff14;
  --logo-wave-gradient: linear-gradient(
    105deg,
    #0f172a 0%,
    #0f172a 22%,
    #059669 36%,
    #10b981 44%,
    #39ff14 50%,
    #22c55e 56%,
    #059669 64%,
    #0f172a 78%,
    #0f172a 100%
  );
  --logo-dot-base: #0f172a;
  --logo-dot-peak: #39ff14;
  --logo-dot-rebound: #10b981;

  /* Typography */
  --font-sans:
    -apple-system, BlinkMacSystemFont, "Pretendard Variable", Pretendard,
    "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
  --font-mono:
    "SF Mono", Consolas, "Liberation Mono", Menlo, Courier, monospace;

  /* Spacings */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Border Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* Layout Containers */
  --container-max-width: 1240px;
  --header-height: 76px;
}

/* --------------------------------------------------------------------------
   Dark Theme Overrides ([data-theme="dark"])
   -------------------------------------------------------------------------- */
[data-theme="dark"] {
  /* Background Color Palette */
  --color-bg-deep: #060608;
  --color-bg-primary: #0a0a0c;
  --color-bg-surface: #121216;
  --color-bg-surface-elevated: #18181f;
  --color-bg-card: rgba(18, 18, 22, 0.72);
  --color-bg-glass: rgba(18, 18, 22, 0.65);
  --color-bg-glass-heavy: rgba(10, 10, 12, 0.85);

  /* Neon Accent Tokens */
  --color-neon-cyan: #00f0ff;
  --color-neon-cyan-glow: rgba(0, 240, 255, 0.25);
  --color-neon-cyan-subtle: rgba(0, 240, 255, 0.08);

  --color-neon-green: #39ff14;
  --color-neon-green-glow: rgba(57, 255, 20, 0.22);
  --color-neon-green-subtle: rgba(57, 255, 20, 0.08);

  --color-neon-purple: #7928ca;
  --color-neon-purple-glow: rgba(121, 40, 202, 0.3);
  --color-neon-purple-subtle: rgba(121, 40, 202, 0.1);

  --color-neon-magenta: #ff007f;
  --color-neon-magenta-glow: rgba(255, 0, 127, 0.25);

  --color-neon-yellow: #ffea00;

  /* Text Colors */
  --color-text-primary: #f5f5f7;
  --color-text-secondary: #888891;
  --color-text-muted: #555562;
  --color-text-inverse: #0a0a0c;

  /* Borders & Dividers */
  --color-border-subtle: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.2);
  --color-border-cyan: rgba(0, 240, 255, 0.35);

  /* Shadows & Glows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.45);
  --shadow-elevated:
    0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px var(--color-neon-cyan-glow);
  --glow-cyan-lg: 0 0 45px var(--color-neon-cyan-glow);
  --glow-green-lg: 0 0 45px var(--color-neon-green-glow);
  --glow-purple-lg: 0 0 45px var(--color-neon-purple-glow);

  /* Brand Wave Tokens (Dark Theme: Platinum Silver with Electric Fluorescent Surge) */
  --logo-icon-base: #f8fafc;
  --logo-icon-peak: #39ff14;
  --logo-wave-gradient: linear-gradient(
    105deg,
    #f8fafc 0%,
    #f8fafc 22%,
    #10b981 36%,
    #22c55e 44%,
    #39ff14 50%,
    #00f0ff 56%,
    #10b981 64%,
    #f8fafc 78%,
    #f8fafc 100%
  );
  --logo-dot-base: #f8fafc;
  --logo-dot-peak: #39ff14;
  --logo-dot-rebound: #00f0ff;
}

/* --------------------------------------------------------------------------
   2. Reset & Global Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  scroll-behavior: smooth;
  color-scheme: light;
  background-color: var(--color-bg-deep);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  word-break: keep-all;
  overflow-wrap: break-word;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  outline: none;
}

button {
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

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

::selection {
  background-color: var(--color-neon-cyan);
  color: var(--color-text-inverse);
}

/* --------------------------------------------------------------------------
   3. Background Ambient Glow FX
   -------------------------------------------------------------------------- */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(120px);
  opacity: 0.12;
  will-change: transform;
  transition: opacity var(--transition-base);
}

[data-theme="dark"] .bg-glow {
  opacity: 0.18;
}

.bg-glow--cyan {
  top: -100px;
  left: 20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(
    circle,
    var(--color-neon-cyan) 0%,
    transparent 70%
  );
  animation: float-slow 18s ease-in-out infinite alternate;
}

.bg-glow--purple {
  top: 40%;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    var(--color-neon-purple) 0%,
    transparent 70%
  );
  animation: float-reverse 22s ease-in-out infinite alternate;
}

.bg-glow--green {
  bottom: -150px;
  left: 10%;
  width: 550px;
  height: 550px;
  background: radial-gradient(
    circle,
    var(--color-neon-green) 0%,
    transparent 70%
  );
  animation: float-slow 20s ease-in-out infinite alternate-reverse;
}

/* --------------------------------------------------------------------------
   4. Typography Utilities & Text Modifiers
   -------------------------------------------------------------------------- */
.text-neon-cyan {
  color: var(--color-neon-cyan);
}

.text-neon-green {
  color: var(--color-neon-green);
}

.text-neon-purple {
  color: var(--color-neon-purple);
}

/* --------------------------------------------------------------------------
   5. Button Component (.btn)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn--sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn--lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.btn--full {
  width: 100%;
}

.btn--neon {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.28);
}

[data-theme="dark"] .btn--neon {
  background: linear-gradient(135deg, var(--color-neon-cyan) 0%, #00b4d8 100%);
  color: #06080e;
  box-shadow: 0 0 20px var(--color-neon-cyan-glow);
}

.btn--neon:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.4);
}

[data-theme="dark"] .btn--neon:hover {
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.45);
  color: #000;
}

.btn--outline {
  background-color: var(--color-bg-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-subtle);
  backdrop-filter: blur(10px);
}

.btn--outline:hover {
  border-color: var(--color-neon-cyan);
  background-color: var(--color-neon-cyan-subtle);
  color: var(--color-neon-cyan);
  transform: translateY(-2px);
}

.btn__icon {
  transition: transform var(--transition-base);
}

.btn:hover .btn__icon {
  transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   6. Theme Toggle Component (.theme-toggle)
   -------------------------------------------------------------------------- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.theme-toggle:hover {
  border-color: var(--color-neon-cyan);
  color: var(--color-neon-cyan);
  box-shadow: 0 0 12px var(--color-neon-cyan-glow);
  transform: scale(1.05);
}

.theme-toggle__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
}

/* Default / Light theme display: show moon icon (to switch to dark), hide sun */
html[data-theme="light"] .theme-toggle__icon--sun {
  display: none;
}
html[data-theme="light"] .theme-toggle__icon--moon {
  display: flex;
}

/* Dark theme display: show sun icon (to switch to light), hide moon */
html[data-theme="dark"] .theme-toggle__icon--sun {
  display: flex;
}
html[data-theme="dark"] .theme-toggle__icon--moon {
  display: none;
}

/* Mobile drawer theme toggle variant */
.theme-toggle--drawer {
  width: 100%;
  height: 44px;
  gap: var(--space-sm);
  padding: 0 var(--space-md);
  margin-bottom: var(--space-md);
  justify-content: center;
  border-radius: var(--radius-md);
}

.theme-toggle__text {
  font-size: 0.875rem;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   7. Header / Navigation (.header)
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
  transition: all var(--transition-base);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--color-bg-glass);
  border-bottom: 1px solid var(--color-border-subtle);
}

.header.header--scrolled {
  background: var(--color-bg-glass-heavy);
  border-bottom-color: var(--color-border-cyan);
  box-shadow: var(--shadow-card);
}

.header__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
  text-decoration: none;
  cursor: pointer;
  user-select: none;
  transition: transform var(--transition-fast);
}

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

.header__logo-emblem {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  transition: transform var(--transition-bounce);
}

.header__logo:hover .header__logo-emblem {
  transform: scale(1.06);
}

.header__logo-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.header__logo-svg--base {
  color: var(--logo-icon-base);
  transition: color var(--transition-fast);
}

.header__logo-svg--sheen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  color: var(--logo-icon-peak);
  pointer-events: none;
  opacity: 0;
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent 0%,
    transparent 20%,
    #000 50%,
    transparent 80%,
    transparent 100%
  );
  -webkit-mask-size: 300% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-image: linear-gradient(
    90deg,
    transparent 0%,
    transparent 20%,
    #000 50%,
    transparent 80%,
    transparent 100%
  );
  mask-size: 300% 100%;
  mask-repeat: no-repeat;
  animation: logoWaveSvgSheen 3.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  will-change:
    mask-position,
    -webkit-mask-position,
    opacity;
}

.header__logo-text {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.09em;
  background: var(--logo-wave-gradient);
  background-size: 300% 100%;
  background-repeat: repeat-x;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: logoWaveText 3.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  will-change: background-position;
  display: inline-block;
}

.header__logo-dot {
  display: inline-block;
  width: 6.5px;
  height: 6.5px;
  border-radius: 50%;
  background-color: var(--logo-dot-base);
  animation: logoWaveDot 3.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  will-change: background-color;
  margin-left: -2px;
}

.header__logo:hover .header__logo-svg--base {
  color: var(--logo-icon-peak);
}

.header__logo:hover .header__logo-dot {
  background-color: var(--logo-dot-peak);
}

/* Crisp Vector Styling for Mockup & Satellite Icons */
.hero__preview-version-svg {
  display: inline-block;
  vertical-align: middle;
  margin-right: 4px;
  color: var(--logo-icon-base);
  flex-shrink: 0;
}

.floating-satellite__svg {
  display: block;
  color: var(--logo-icon-base);
}

.header__nav {
  display: flex;
  align-items: center;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.header__link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
}

.header__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-neon-cyan);
  box-shadow: 0 0 8px var(--color-neon-cyan);
  transition: width var(--transition-base);
  border-radius: 2px;
}

.header__link:hover,
.header__link--active {
  color: var(--color-text-primary);
}

.header__link--active::after {
  width: 100%;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.header__toggle-bar {
  width: 100%;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
}

/* --------------------------------------------------------------------------
   8. Mobile Drawer (.mobile-drawer)
   -------------------------------------------------------------------------- */
.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 150;
  visibility: hidden;
  opacity: 0;
  transition:
    visibility var(--transition-base),
    opacity var(--transition-base);
}

.mobile-drawer.is-open {
  visibility: visible;
  opacity: 1;
}

.mobile-drawer__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
}

.mobile-drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 300px;
  background-color: var(--color-bg-surface);
  border-left: 1px solid var(--color-border-subtle);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
}

.mobile-drawer.is-open .mobile-drawer__panel {
  transform: translateX(0);
}

.mobile-drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--color-border-subtle);
  padding-bottom: var(--space-md);
}

.mobile-drawer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mobile-drawer__emblem {
  position: relative;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.mobile-drawer__title {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.09em;
  background: var(--logo-wave-gradient);
  background-size: 300% 100%;
  background-repeat: repeat-x;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: logoWaveText 3.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  display: inline-block;
}

.mobile-drawer__close {
  font-size: 1.8rem;
  line-height: 1;
  color: var(--color-text-secondary);
  cursor: pointer;
}

.mobile-drawer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  flex: 1;
}

.mobile-drawer__link {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-text-primary);
  display: block;
}

.mobile-drawer__link:hover {
  color: var(--color-neon-cyan);
}

/* --------------------------------------------------------------------------
   9. Hero Section (.hero) & Anti-gravity Floating Preview
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  padding-top: calc(var(--header-height) + var(--space-3xl));
  padding-bottom: var(--space-4xl);
  display: flex;
  align-items: center;
  z-index: 1;
}

.hero__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 580px;
  gap: var(--space-2xl);
  align-items: center;
}

.hero__content {
  min-width: 0;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background-color: var(--color-neon-cyan-subtle);
  border: 1px solid var(--color-border-cyan);
  margin-bottom: var(--space-lg);
}

.hero__badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-neon-cyan);
  box-shadow: 0 0 8px var(--color-neon-cyan);
  animation: pulse-glow 1.5s infinite;
}

.hero__badge-text {
  font-size: 0.825rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-neon-cyan);
}

.hero__title {
  font-size: clamp(1.75rem, 2.6vw, 2.65rem);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
  word-break: keep-all;
}

.hero__title-line {
  display: block;
  white-space: nowrap;
}

.hero__title-accent--cyan {
  background: linear-gradient(90deg, #0284c7 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 8px rgba(2, 132, 199, 0.2));
}

[data-theme="dark"] .hero__title-accent--cyan {
  background: linear-gradient(90deg, #00f0ff 0%, #7000ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 15px rgba(0, 240, 255, 0.3));
}

.hero__description {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-2xl);
  word-break: keep-all;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--space-xl);
}

.hero__stat-item {
  display: flex;
  flex-direction: column;
}

.hero__stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.hero__stat-divider {
  width: 1px;
  height: 36px;
  background-color: var(--color-border-subtle);
}

/* Floating Anti-gravity Preview Card */
.hero__visual {
  position: relative;
  perspective: 1000px;
  width: 580px;
  max-width: 100%;
}

.hero__preview-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-cyan);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-elevated);
  overflow: hidden;
  position: relative;
  animation: float-slow 6s ease-in-out infinite alternate;
  transform-style: preserve-3d;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.hero__preview-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow:
    0 25px 50px rgba(15, 23, 42, 0.15),
    0 0 30px var(--color-neon-cyan-glow);
}

[data-theme="dark"] .hero__preview-card:hover {
  box-shadow:
    0 25px 50px rgba(0, 0, 0, 0.7),
    0 0 35px var(--color-neon-cyan-glow);
}

.hero__preview-header {
  padding: 14px 20px;
  background: rgba(241, 245, 249, 0.75);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

[data-theme="dark"] .hero__preview-header {
  background: rgba(255, 255, 255, 0.03);
}

.hero__preview-controls {
  display: flex;
  gap: 6px;
}

.hero__preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.hero__preview-dot--red {
  background-color: #ff5f56;
}
.hero__preview-dot--yellow {
  background-color: #ffbd2e;
}
.hero__preview-dot--green {
  background-color: #27c93f;
}

.hero__preview-title {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.hero__preview-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-neon-green);
  box-shadow: 0 0 6px var(--color-neon-green);
}

.hero__preview-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  background: var(--color-neon-cyan-subtle);
  color: var(--color-neon-cyan);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-cyan);
}

.hero__preview-body {
  padding: var(--space-lg);
}

.hero__metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.hero__metric-box {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.hero__metric-name {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
  white-space: nowrap;
}

.hero__metric-num {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.hero__metric-trend {
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: 4px;
  white-space: nowrap;
}

.hero__metric-trend--up {
  color: var(--color-neon-cyan);
}
.hero__metric-trend--green {
  color: var(--color-neon-green);
}
.hero__metric-trend--cyan {
  color: #0284c7;
}
[data-theme="dark"] .hero__metric-trend--cyan {
  color: #58a6ff;
}

.hero__stream-wrapper {
  background: #f1f5f9;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  overflow: hidden;
}

[data-theme="dark"] .hero__stream-wrapper {
  background: rgba(6, 6, 8, 0.7);
}

.hero__stream-label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero__stream-label::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--color-neon-cyan);
  border-radius: 50%;
  animation: pulse-glow 1s infinite alternate;
}

.hero__stream-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 268px;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: rgba(15, 23, 42, 0.2) transparent;
  scroll-behavior: smooth;
}

[data-theme="dark"] .hero__stream-list {
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.hero__stream-list::-webkit-scrollbar {
  width: 5px;
}

.hero__stream-list::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 4px;
}

.hero__stream-list::-webkit-scrollbar-thumb {
  background: rgba(15, 23, 42, 0.2);
  border-radius: 4px;
}

.hero__stream-list::-webkit-scrollbar-thumb:hover {
  background: rgba(15, 23, 42, 0.35);
}

[data-theme="dark"] .hero__stream-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .hero__stream-list::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

.hero__stream-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: 8px 10px;
  background: #ffffff;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  border-left: 2px solid transparent;
  transition: all var(--transition-fast);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
  overflow: hidden;
  flex-shrink: 0;
  min-width: 0;
  width: 100%;
}

.hero__stream-item--entering {
  animation: streamItemEnterLight 0.65s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  will-change: max-height, opacity, transform, margin-bottom, padding;
  flex-shrink: 0;
}

[data-theme="dark"] .hero__stream-item {
  background: rgba(255, 255, 255, 0.02);
  box-shadow: none;
}

[data-theme="dark"] .hero__stream-item--entering {
  animation: streamItemEnterDark 0.65s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes streamItemEnterLight {
  0% {
    opacity: 0;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-bottom: -8px;
    transform: translateY(-16px) scale(0.96);
    background: rgba(2, 132, 199, 0.16);
    border-left: 2px solid var(--color-neon-cyan);
    box-shadow: 0 2px 10px rgba(2, 132, 199, 0.18);
  }
  40% {
    opacity: 0.9;
    max-height: 46px;
    padding-top: 8px;
    padding-bottom: 8px;
    margin-bottom: 0;
    transform: translateY(-3px) scale(0.99);
    background: rgba(2, 132, 199, 0.12);
    border-left: 2px solid var(--color-neon-cyan);
    box-shadow: 0 2px 8px rgba(2, 132, 199, 0.12);
  }
  75% {
    opacity: 1;
    max-height: 52px;
    background: rgba(2, 132, 199, 0.05);
    border-left: 2px solid rgba(2, 132, 199, 0.5);
  }
  100% {
    opacity: 1;
    max-height: 52px;
    padding-top: 8px;
    padding-bottom: 8px;
    margin-bottom: 0;
    transform: translateY(0) scale(1);
    background: #ffffff;
    border-left: 2px solid transparent;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
  }
}

@keyframes streamItemEnterDark {
  0% {
    opacity: 0;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-bottom: -8px;
    transform: translateY(-16px) scale(0.96);
    background: rgba(0, 240, 255, 0.2);
    border-left: 2px solid var(--color-neon-cyan);
    box-shadow: 0 2px 12px rgba(0, 240, 255, 0.25);
  }
  40% {
    opacity: 0.9;
    max-height: 46px;
    padding-top: 8px;
    padding-bottom: 8px;
    margin-bottom: 0;
    transform: translateY(-3px) scale(0.99);
    background: rgba(0, 240, 255, 0.14);
    border-left: 2px solid var(--color-neon-cyan);
    box-shadow: 0 2px 8px rgba(0, 240, 255, 0.18);
  }
  75% {
    opacity: 1;
    max-height: 52px;
    background: rgba(0, 240, 255, 0.06);
    border-left: 2px solid rgba(0, 240, 255, 0.5);
  }
  100% {
    opacity: 1;
    max-height: 52px;
    padding-top: 8px;
    padding-bottom: 8px;
    margin-bottom: 0;
    transform: translateY(0) scale(1);
    background: rgba(255, 255, 255, 0.02);
    border-left: 2px solid transparent;
    box-shadow: none;
  }
}

.hero__stream-item--exit-left {
  animation: streamItemExitLeft 0.36s cubic-bezier(0.32, 0, 0.67, 0) forwards;
  pointer-events: none;
  will-change: transform, opacity;
}

.hero__stream-item--exit-right {
  animation: streamItemExitRight 0.36s cubic-bezier(0.32, 0, 0.67, 0) forwards;
  pointer-events: none;
  will-change: transform, opacity;
}

@keyframes streamItemExitLeft {
  0% {
    transform: translateX(0);
    opacity: 1;
  }
  25% {
    opacity: 0.9;
    transform: translateX(-12%);
  }
  100% {
    transform: translateX(-125%);
    opacity: 0;
  }
}

@keyframes streamItemExitRight {
  0% {
    transform: translateX(0);
    opacity: 1;
  }
  25% {
    opacity: 0.9;
    transform: translateX(12%);
  }
  100% {
    transform: translateX(125%);
    opacity: 0;
  }
}

.hero__stream-item:hover {
  background: var(--color-bg-primary);
}

.hero__stream-channel {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  white-space: nowrap;
}

.hero__stream-channel--sabang {
  background: rgba(2, 132, 199, 0.12);
  color: #0284c7;
}

[data-theme="dark"] .hero__stream-channel--sabang {
  background: rgba(0, 240, 255, 0.15);
  color: var(--color-neon-cyan);
}

.hero__stream-channel--kds {
  background: rgba(5, 150, 105, 0.12);
  color: #059669;
}

[data-theme="dark"] .hero__stream-channel--kds {
  background: rgba(57, 255, 20, 0.15);
  color: var(--color-neon-green);
}

.hero__stream-channel--fin {
  background: rgba(124, 58, 237, 0.12);
  color: #7c3aed;
}

[data-theme="dark"] .hero__stream-channel--fin {
  background: rgba(121, 40, 202, 0.2);
  color: #bf7fff;
}

.hero__stream-text {
  flex: 1;
  min-width: 0;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.775rem;
}

.hero__stream-status {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.hero__preview-footer {
  padding: 10px 20px;
  background: rgba(241, 245, 249, 0.85);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

[data-theme="dark"] .hero__preview-footer {
  background: rgba(0, 0, 0, 0.4);
}

.hero__preview-version {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero__preview-version-icon {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  display: block;
}

.hero__preview-ping {
  color: var(--color-neon-green);
}

/* Floating Satellites */
.floating-satellite {
  position: absolute;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 2;
  pointer-events: none;
}

[data-theme="dark"] .floating-satellite {
  background: rgba(18, 18, 24, 0.85);
}

.floating-satellite strong {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-primary);
}

.floating-satellite small {
  font-size: 0.7rem;
  color: var(--color-neon-cyan);
}

.floating-satellite__img {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  display: block;
}

.floating-satellite--top {
  top: -20px;
  right: -20px;
  border-color: var(--color-border-cyan);
  animation: float-reverse 7s ease-in-out infinite alternate;
}

.floating-satellite--bottom {
  bottom: 8px;
  left: -36px;
  border-color: rgba(5, 150, 105, 0.35);
  animation: float-slow 8s ease-in-out infinite alternate;
}

/* --------------------------------------------------------------------------
   10. About Section (.about)
   -------------------------------------------------------------------------- */
.about {
  padding: var(--space-4xl) 0;
  position: relative;
  z-index: 1;
}

.about__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.about__header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto var(--space-3xl);
}

.about__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-neon-cyan);
  margin-bottom: var(--space-sm);
}

.about__title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
}

.about__desc {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.about__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.about__card {
  background: var(--color-bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.about__card:hover {
  transform: translateY(-8px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-elevated);
}

.about__card-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.about__card-icon-box--cyan {
  background: var(--color-neon-cyan-subtle);
  color: var(--color-neon-cyan);
  border: 1px solid var(--color-border-cyan);
}

.about__card-icon-box--green {
  background: var(--color-neon-green-subtle);
  color: var(--color-neon-green);
  border: 1px solid rgba(5, 150, 105, 0.3);
}

.about__card-icon-box--purple {
  background: var(--color-neon-purple-subtle);
  color: var(--color-neon-purple);
  border: 1px solid rgba(124, 58, 237, 0.3);
}

.about__card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.about__card-desc {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   11. Services Section (.services) & Service Card (.service-card)
   -------------------------------------------------------------------------- */
.services {
  padding: var(--space-4xl) 0;
  position: relative;
  z-index: 1;
}

.services__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.services__header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto var(--space-3xl);
}

.services__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-neon-cyan);
  margin-bottom: var(--space-sm);
}

.services__title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.services__desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

/* Service Card Block */
.service-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
}

.service-card__glow {
  position: absolute;
  top: -50px;
  right: -50px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.15;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.service-card:hover .service-card__glow {
  opacity: 0.35;
}

.service-card--featured {
  border-color: var(--color-border-cyan);
  box-shadow: 0 10px 30px rgba(2, 132, 199, 0.08);
}

[data-theme="dark"] .service-card--featured {
  border-color: rgba(0, 240, 255, 0.4);
  box-shadow: 0 10px 30px rgba(0, 240, 255, 0.08);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-neon-cyan);
  box-shadow: var(--shadow-elevated);
}

.service-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.service-card__icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-bounce);
}

.service-card:hover .service-card__icon-wrapper {
  transform: scale(1.08) rotate(3deg);
}

.service-card__icon-wrapper--cyan {
  background: var(--color-neon-cyan-subtle);
  color: var(--color-neon-cyan);
  border: 1px solid var(--color-border-cyan);
}

.service-card__icon-wrapper--green {
  background: var(--color-neon-green-subtle);
  color: var(--color-neon-green);
  border: 1px solid rgba(5, 150, 105, 0.3);
}

.service-card__icon-wrapper--purple {
  background: var(--color-neon-purple-subtle);
  color: var(--color-neon-purple);
  border: 1px solid rgba(124, 58, 237, 0.3);
}

.service-card__icon-wrapper--magenta {
  background: rgba(225, 29, 72, 0.08);
  color: var(--color-neon-magenta);
  border: 1px solid rgba(225, 29, 72, 0.3);
}

.service-card__badge {
  font-family: var(--font-mono);
  font-size: 0.725rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.service-card__badge--cyan {
  background: var(--color-neon-cyan-subtle);
  color: var(--color-neon-cyan);
  border: 1px solid var(--color-border-cyan);
}

.service-card__badge--green {
  background: var(--color-neon-green-subtle);
  color: var(--color-neon-green);
  border: 1px solid rgba(5, 150, 105, 0.3);
}

.service-card__badge--purple {
  background: var(--color-neon-purple-subtle);
  color: var(--color-neon-purple);
  border: 1px solid rgba(124, 58, 237, 0.3);
}

.service-card__badge--magenta {
  background: rgba(225, 29, 72, 0.08);
  color: var(--color-neon-magenta);
  border: 1px solid rgba(225, 29, 72, 0.3);
}

.service-card__title {
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-text-primary);
}

.service-card__subtitle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-neon-cyan);
  margin-bottom: var(--space-md);
}

.service-card__desc {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.service-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  flex: 1;
}

.service-card__feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.885rem;
  color: var(--color-text-secondary);
}

.service-card__check {
  color: var(--color-neon-green);
  font-weight: 800;
  line-height: 1.4;
}

.service-card__footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--space-lg);
  margin-top: auto;
}

.service-card__metric {
  display: flex;
  flex-direction: column;
}

.service-card__metric-val {
  font-size: 1.45rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--color-text-primary);
}

.service-card__metric-lbl {
  font-size: 0.785rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   12. Tech Stack Section (.tech-stack) & Tech Card (.tech-card)
   -------------------------------------------------------------------------- */
.tech-stack {
  padding: var(--space-4xl) 0;
  position: relative;
  z-index: 1;
}

.tech-stack__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.tech-stack__header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-3xl);
}

.tech-stack__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-neon-cyan);
  margin-bottom: var(--space-sm);
}

.tech-stack__title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.tech-stack__desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
}

.tech-stack__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.tech-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
}

.tech-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-border-cyan);
  box-shadow: var(--shadow-elevated);
}

.tech-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.tech-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.tech-card__icon--cyan {
  background: var(--color-neon-cyan-subtle);
  color: var(--color-neon-cyan);
  border: 1px solid var(--color-border-cyan);
}

.tech-card__icon--green {
  background: var(--color-neon-green-subtle);
  color: var(--color-neon-green);
  border: 1px solid rgba(5, 150, 105, 0.3);
}

.tech-card__icon--purple {
  background: var(--color-neon-purple-subtle);
  color: var(--color-neon-purple);
  border: 1px solid rgba(124, 58, 237, 0.3);
}

.tech-card__icon--magenta {
  background: rgba(225, 29, 72, 0.08);
  color: var(--color-neon-magenta);
  border: 1px solid rgba(225, 29, 72, 0.3);
}

.tech-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.tech-card__category {
  font-size: 0.785rem;
  color: var(--color-text-muted);
}

.tech-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.tech-card__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tech-card__pill {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.tech-card__item-note {
  font-size: 0.775rem;
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   13. History Section (.history) & Timeline (.timeline)
   -------------------------------------------------------------------------- */
.history {
  padding: var(--space-4xl) 0;
  position: relative;
  z-index: 1;
}

.history__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.history__header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-3xl);
}

.history__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-neon-cyan);
  margin-bottom: var(--space-sm);
}

.history__title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.history__desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
}

.timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding: var(--space-lg) 0;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 32px;
  width: 2px;
  background: linear-gradient(
    180deg,
    var(--color-neon-cyan) 0%,
    var(--color-neon-purple) 60%,
    rgba(15, 23, 42, 0.1) 100%
  );
}

[data-theme="dark"] .timeline::before {
  background: linear-gradient(
    180deg,
    var(--color-neon-cyan) 0%,
    var(--color-neon-purple) 60%,
    rgba(255, 255, 255, 0.05) 100%
  );
}

.timeline__item {
  position: relative;
  display: flex;
  gap: var(--space-2xl);
  padding-bottom: var(--space-3xl);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__marker {
  position: relative;
  z-index: 2;
  width: 64px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 6px;
}

.timeline__marker-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-bg-surface);
  border: 3px solid var(--color-neon-cyan);
  box-shadow: 0 0 10px var(--color-neon-cyan);
  transition: transform var(--transition-base);
}

.timeline__item:hover .timeline__marker-dot {
  transform: scale(1.3);
}

.timeline__marker-pulse {
  position: absolute;
  top: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--color-neon-cyan);
  animation: pulse-glow 2s infinite;
}

.timeline__content {
  flex: 1;
  background: var(--color-bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-card);
}

.timeline__item--featured .timeline__content {
  border-color: var(--color-border-cyan);
  background: linear-gradient(
    135deg,
    var(--color-bg-surface) 0%,
    var(--color-neon-cyan-subtle) 100%
  );
}

.timeline__item:hover .timeline__content {
  transform: translateX(8px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-elevated);
}

.timeline__date {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-neon-cyan);
  margin-bottom: var(--space-xs);
}

.timeline__title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.timeline__desc {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.timeline__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.timeline__tag {
  font-family: var(--font-mono);
  font-size: 0.725rem;
  padding: 3px 8px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   14. Contact Section (.contact) & Contact Form (.contact-form)
   -------------------------------------------------------------------------- */
.contact {
  padding: var(--space-4xl) 0;
  position: relative;
  z-index: 1;
}

.contact__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.contact__header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-3xl);
}

.contact__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-neon-cyan);
  margin-bottom: var(--space-sm);
}

.contact__title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.contact__desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
}

.contact__wrapper {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-3xl);
  align-items: start;
}

/* Contact Info */
.contact__info {
  background: var(--color-bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-card);
}

.contact__info-title {
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.contact__info-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

.contact__meta-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.contact__meta-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact__meta-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--color-neon-cyan-subtle);
  color: var(--color-neon-cyan);
  border: 1px solid var(--color-border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__meta-label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.contact__meta-value {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: 2px;
}

.contact__guarantee {
  background: var(--color-neon-cyan-subtle);
  border: 1px dashed var(--color-border-cyan);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.contact__guarantee-icon {
  font-size: 1.6rem;
}

.contact__guarantee-text strong {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.contact__guarantee-text p {
  font-size: 0.775rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

/* Contact Form Panel */
.contact__form-panel {
  background: var(--color-bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-cyan);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.contact-form__group {
  display: flex;
  flex-direction: column;
  position: relative;
}

.contact-form__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.contact-form__input,
.contact-form__select,
.contact-form__textarea {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--color-text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

[data-theme="dark"] .contact-form__input,
[data-theme="dark"] .contact-form__select,
[data-theme="dark"] .contact-form__textarea {
  background: rgba(10, 10, 12, 0.75);
}

.contact-form__input:focus,
.contact-form__select:focus,
.contact-form__textarea:focus {
  border-color: var(--color-neon-cyan);
  box-shadow: 0 0 12px var(--color-neon-cyan-glow);
  background: var(--color-bg-surface);
}

.contact-form__select option {
  background-color: var(--color-bg-surface);
  color: var(--color-text-primary);
}

.contact-form__textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-form__feedback {
  font-size: 0.75rem;
  color: var(--color-neon-magenta);
  margin-top: 4px;
  display: none;
}

.contact-form__group.has-error .contact-form__input,
.contact-form__group.has-error .contact-form__select,
.contact-form__group.has-error .contact-form__textarea {
  border-color: var(--color-neon-magenta);
}

.contact-form__group.has-error .contact-form__feedback {
  display: block;
}

/* Checkbox */
.contact-form__group--checkbox {
  margin: var(--space-xs) 0;
}

.contact-form__checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.contact-form__checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.contact-form__checkbox-custom {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid var(--color-border-subtle);
  background: var(--color-bg-surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.contact-form__checkbox:checked + .contact-form__checkbox-custom {
  background-color: var(--color-neon-cyan);
  border-color: var(--color-neon-cyan);
  box-shadow: 0 0 8px var(--color-neon-cyan);
}

.contact-form__checkbox:checked + .contact-form__checkbox-custom::after {
  content: "";
  width: 4px;
  height: 8px;
  border: solid #ffffff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px, -1px);
}

[data-theme="dark"]
  .contact-form__checkbox:checked
  + .contact-form__checkbox-custom::after {
  border-color: #000000;
}

.contact-form__checkbox-text {
  font-size: 0.825rem;
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   15. Footer (.footer)
   -------------------------------------------------------------------------- */
.footer {
  background: #e2e8f0;
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-3xl) 0 var(--space-xl);
  position: relative;
  z-index: 1;
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base);
}

[data-theme="dark"] .footer {
  background: var(--color-bg-deep);
}

.footer__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.footer__main {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.footer__brand {
  max-width: 380px;
}

.footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

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

.footer__logo-emblem {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  transition: transform var(--transition-bounce);
}

.footer__logo:hover .footer__logo-emblem {
  transform: scale(1.06);
}

.footer__logo-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.footer__logo-svg--base {
  color: var(--logo-icon-base);
  transition: color var(--transition-fast);
}

.footer__logo-svg--sheen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  color: var(--logo-icon-peak);
  pointer-events: none;
  opacity: 0;
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent 0%,
    transparent 20%,
    #000 50%,
    transparent 80%,
    transparent 100%
  );
  -webkit-mask-size: 300% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-image: linear-gradient(
    90deg,
    transparent 0%,
    transparent 20%,
    #000 50%,
    transparent 80%,
    transparent 100%
  );
  mask-size: 300% 100%;
  mask-repeat: no-repeat;
  animation: logoWaveSvgSheen 3.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  will-change:
    mask-position,
    -webkit-mask-position,
    opacity;
}

.footer__logo-text {
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.09em;
  background: var(--logo-wave-gradient);
  background-size: 300% 100%;
  background-repeat: repeat-x;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: logoWaveText 3.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  will-change: background-position;
  display: inline-block;
}

.footer__logo-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--logo-dot-base);
  animation: logoWaveDot 3.6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  will-change: background-color;
  margin-left: -2px;
}

.footer__logo:hover .footer__logo-svg--base {
  color: var(--logo-icon-peak);
}

.footer__logo:hover .footer__logo-dot {
  background-color: var(--logo-dot-peak);
}

.footer__slogan {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.footer__nav-group {
  display: flex;
  gap: var(--space-3xl);
}

.footer__nav-heading {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

.footer__nav-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__nav-links a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.footer__nav-links a:hover {
  color: var(--color-neon-cyan);
}

.footer__divider {
  height: 1px;
  background-color: var(--color-border-subtle);
  margin: var(--space-xl) 0;
}

.footer__info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: var(--space-lg);
}

.footer__company-meta {
  font-size: 0.785rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer__company-meta strong {
  color: var(--color-text-secondary);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.785rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__legal {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer__legal-link:hover {
  color: var(--color-text-primary);
}

.footer__legal-sep {
  opacity: 0.3;
}

/* --------------------------------------------------------------------------
   16. Toast Notification Modal (.toast)
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 200;
  background: var(--color-bg-surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-cyan);
  box-shadow: var(--shadow-elevated);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  max-width: 440px;
  transform: translateY(120%);
  opacity: 0;
  visibility: hidden;
  transition:
    transform var(--transition-bounce),
    opacity var(--transition-base),
    visibility var(--transition-base);
}

[data-theme="dark"] .toast {
  background: var(--color-bg-surface-elevated);
}

.toast.is-active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.toast__icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-neon-cyan);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.95rem;
  flex-shrink: 0;
  box-shadow: 0 0 10px var(--color-neon-cyan-glow);
}

[data-theme="dark"] .toast__icon {
  color: #000000;
}

.toast__title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.toast__desc {
  font-size: 0.775rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.toast__close {
  font-size: 1.3rem;
  color: var(--color-text-secondary);
  margin-left: auto;
  cursor: pointer;
  padding: 4px;
}

.toast__close:hover {
  color: var(--color-text-primary);
}

/* --------------------------------------------------------------------------
   17. Anti-gravity & Scroll Reveal Animations
   -------------------------------------------------------------------------- */
@keyframes float-slow {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-12px);
  }
  100% {
    transform: translateY(0px);
  }
}

@keyframes float-reverse {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(10px);
  }
  100% {
    transform: translateY(0px);
  }
}

@keyframes pulse-glow {
  0% {
    box-shadow: 0 0 4px var(--color-neon-cyan-glow);
    opacity: 0.8;
  }
  100% {
    box-shadow: 0 0 14px var(--color-neon-cyan);
    opacity: 1;
  }
}

/* --------------------------------------------------------------------------
   Logo Unified Horizontal Wave Animation (L -> R Pure Color Flow)
   - Zero shadows/filters: purely letter and vector stroke colors transition
   - 0% ~ 20%: Fluorescent wave sweeps across Logo SVG (left -> center -> right)
   - 14% ~ 48%: Fluorescent wave sweeps across NEEON text (N -> E -> E -> O -> N)
   - 42% ~ 66%: Fluorescent wave touches Dot ●
   - 66% ~ 100%: Calm resting period in unified base color
   -------------------------------------------------------------------------- */
@keyframes logoWaveSvgSheen {
  0% {
    opacity: 0;
    -webkit-mask-position: 100% 0;
    mask-position: 100% 0;
  }
  2% {
    opacity: 1;
    -webkit-mask-position: 90% 0;
    mask-position: 90% 0;
  }
  9% {
    opacity: 1;
    -webkit-mask-position: 50% 0;
    mask-position: 50% 0;
  }
  16% {
    opacity: 1;
    -webkit-mask-position: 10% 0;
    mask-position: 10% 0;
  }
  20% {
    opacity: 0;
    -webkit-mask-position: 0% 0;
    mask-position: 0% 0;
  }
  20.1%,
  100% {
    opacity: 0;
    -webkit-mask-position: 100% 0;
    mask-position: 100% 0;
  }
}

@keyframes logoWaveText {
  0%,
  14% {
    background-position: 100% 50%;
  }
  48% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes logoWaveDot {
  0%,
  42% {
    background-color: var(--logo-dot-base);
  }
  50% {
    background-color: var(--logo-dot-peak);
  }
  58% {
    background-color: var(--logo-dot-rebound);
  }
  66%,
  100% {
    background-color: var(--logo-dot-base);
  }
}

/* Native IntersectionObserver Reveal Target */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   18. Responsive Media Queries (Mobile & Tablet)
   -------------------------------------------------------------------------- */
@media (max-width: 1120px) {
  .hero__container {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .hero__content {
    text-align: center;
  }

  .hero__description {
    margin-left: auto;
    margin-right: auto;
    max-width: 680px;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__stats {
    justify-content: center;
  }

  .hero__visual {
    width: 100%;
    max-width: 580px;
    margin: 0 auto;
  }
}

@media (max-width: 1024px) {

  .about__grid {
    grid-template-columns: 1fr;
  }

  .services__grid {
    grid-template-columns: 1fr;
  }

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

  .contact__wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
    --space-4xl: 64px;
    --space-3xl: 48px;
  }

  .header__nav {
    display: none;
  }

  .header__toggle {
    display: flex;
  }

  .header__actions .btn {
    display: none;
  }

  .hero__title {
    font-size: clamp(1.25rem, 5.2vw, 1.85rem);
  }

  .hero__stats {
    flex-direction: column;
    gap: var(--space-md);
  }

  .hero__stat-divider {
    display: none;
  }

  .hero__metrics-grid {
    grid-template-columns: 1fr;
  }

  .floating-satellite {
    display: none;
  }

  .about__title,
  .services__title,
  .tech-stack__title,
  .history__title,
  .contact__title {
    font-size: 1.85rem;
  }

  .tech-stack__grid {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 16px;
  }

  .timeline__marker {
    width: 32px;
  }

  .timeline__item {
    gap: var(--space-md);
  }

  .contact-form__row {
    grid-template-columns: 1fr;
  }

  .footer__main {
    flex-direction: column;
    gap: var(--space-2xl);
  }

  .footer__nav-group {
    flex-direction: column;
    gap: var(--space-xl);
  }

  .toast {
    left: 20px;
    right: 20px;
    bottom: 20px;
  }
}