/* ============================================
   ORONFLIX — Base Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;0,9..40,800;1,9..40,400&display=swap');

/* ---------- CSS Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img, svg { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }

/* ---------- Custom Properties ---------- */
:root {
  /* Colors — Dark-first (Netflix vibe) */
  --bg-primary: #0a0a12;
  --bg-secondary: #141420;
  --bg-card: #1a1a2e;
  --bg-card-hover: #222240;
  --bg-nav: rgba(10, 10, 18, 0.85);
  --bg-nav-solid: rgba(10, 10, 18, 0.97);

  --text-primary: #e5e5e5;
  --text-secondary: #a3a3a3;
  --text-muted: #737373;
  --text-white: #ffffff;

  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-glow: rgba(59, 130, 246, 0.3);
  --netflix-red: #e50914;

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);

  /* Typography */
  --font-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  --fs-billboard: clamp(2.2rem, 5vw, 3.8rem);
  --fs-h1: clamp(1.8rem, 4vw, 2.8rem);
  --fs-h2: clamp(1.3rem, 3vw, 1.8rem);
  --fs-h3: 1.1rem;
  --fs-body: 0.95rem;
  --fs-small: 0.82rem;
  --fs-tiny: 0.72rem;

  /* Spacing */
  --nav-height: 56px;
  --max-width: 1400px;
  --section-gap: 48px;
  --row-gap: 40px;
  --card-gap: 12px;

  /* Animation */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.4s;
  --duration-slow: 0.7s;

  /* Card dimensions */
  --card-ratio: 56.25%; /* 16:9 */
  --card-width-desktop: 240px;
  --card-width-tablet: 200px;
  --card-width-mobile: 160px;
}

/* ---------- Light Mode Override ---------- */
[data-theme="light"] {
  --bg-primary: #f5f5f7;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f0f5;
  --bg-nav: rgba(245, 245, 247, 0.85);
  --bg-nav-solid: rgba(245, 245, 247, 0.97);

  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8888a0;
  --text-white: #1a1a2e;

  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-hover: rgba(0, 0, 0, 0.12);

  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
}

/* ---------- Base Styles ---------- */
body {
  font-family: var(--font-primary);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

/* ---------- Navigation ---------- */
.onf-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4%;
  z-index: 1000;
  background: transparent;
  transition: background var(--duration-normal) var(--ease-smooth),
              backdrop-filter var(--duration-normal) var(--ease-smooth);
}

.onf-nav--solid {
  background: var(--bg-nav-solid);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.onf-nav__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.onf-nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.onf-nav__link {
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
  position: relative;
}

.onf-nav__link:hover,
.onf-nav__link--active {
  color: var(--text-white);
}

.onf-nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-spring);
}

.onf-nav__link:hover::after,
.onf-nav__link--active::after {
  transform: scaleX(1);
}

.onf-nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.onf-nav__btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: color var(--duration-fast), background var(--duration-fast);
}

.onf-nav__btn:hover {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.08);
}

.onf-nav__btn svg {
  width: 18px;
  height: 18px;
}

/* Mobile nav toggle */
.onf-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  padding: 4px 0;
}

.onf-nav__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--duration-normal) var(--ease-spring),
              opacity var(--duration-fast);
}

/* ---------- Typography ---------- */
.onf-billboard-title {
  font-family: var(--font-display);
  font-size: var(--fs-billboard);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-white);
}

.onf-section-title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 20px;
}

/* ---------- Buttons ---------- */
.onf-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: var(--fs-small);
  font-weight: 600;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.onf-btn--primary {
  background: var(--text-white);
  color: var(--bg-primary);
}

.onf-btn--primary:hover {
  background: rgba(255, 255, 255, 0.85);
  transform: scale(1.03);
}

.onf-btn--secondary {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.onf-btn--secondary:hover {
  background: rgba(255, 255, 255, 0.2);
}

.onf-btn svg {
  width: 18px;
  height: 18px;
}

/* ---------- Scroll Animations ---------- */
.onf-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-spring),
              transform var(--duration-slow) var(--ease-spring);
}

.onf-animate.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children */
.onf-stagger > .onf-animate:nth-child(1) { transition-delay: 0ms; }
.onf-stagger > .onf-animate:nth-child(2) { transition-delay: 80ms; }
.onf-stagger > .onf-animate:nth-child(3) { transition-delay: 160ms; }
.onf-stagger > .onf-animate:nth-child(4) { transition-delay: 240ms; }
.onf-stagger > .onf-animate:nth-child(5) { transition-delay: 320ms; }
.onf-stagger > .onf-animate:nth-child(6) { transition-delay: 400ms; }

/* ---------- Progress Bar (Netflix-style) ---------- */
.onf-progress {
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
}

.onf-progress__fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s linear;
}

/* ---------- Badge ---------- */
.onf-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: var(--fs-tiny);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.onf-badge--new {
  background: var(--accent);
  color: white;
}

.onf-badge--top {
  background: var(--netflix-red);
  color: white;
}

/* ---------- Availability Dot ---------- */
.onf-available {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-small);
  color: var(--text-secondary);
}

.onf-available__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
}

/* ---------- Responsive ---------- */
@media (max-width: 810px) {
  .onf-nav__links {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 80vw;
    max-width: 280px;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 24px;
    border-left: 1px solid var(--border-subtle);
  }

  .onf-nav__link {
    padding: 12px 0;
  }

  .onf-nav__links--open {
    display: flex;
  }

  .onf-nav__hamburger {
    display: flex;
  }
}

@media (max-width: 390px) {
  :root {
    --card-gap: 8px;
  }

  .onf-btn {
    padding: 14px 24px;
  }
}

/* Touch device — prevent sticky hover on nav buttons */
@media (hover: none) {
  .onf-nav__btn:hover {
    color: var(--text-secondary);
    background: none;
  }
}

/* ---------- Light Mode — Component Overrides ---------- */
[data-theme="light"] .onf-nav__btn:hover {
  background: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .onf-btn--primary {
  background: var(--text-primary);
  color: var(--bg-primary);
}

[data-theme="light"] .onf-btn--primary:hover {
  background: #2a2a40;
}

[data-theme="light"] .onf-btn--secondary {
  background: rgba(0, 0, 0, 0.06);
  color: var(--text-primary);
  border-color: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .onf-btn--secondary:hover {
  background: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .onf-progress {
  background: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .onf-nav__hamburger span {
  background: var(--text-primary);
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .onf-animate { opacity: 1; transform: none; }
}