/* ====== TOKENS ====== */
:root {
  --bg: #0f0a08;
  --bg-light: #1c1410;
  --cream: #fef3e7;
  --cream-soft: #e8d9c4;
  --orange: #ff6b1a;
  --orange-light: #ff9540;
  --orange-deep: #d54a00;
  --yellow: #ffd23f;
  --red: #c8241c;
  --green: #6ba84a;
  --text-muted: rgba(254, 243, 231, 0.7);
  --text-dim: rgba(254, 243, 231, 0.45);
  --border: rgba(254, 243, 231, 0.1);

  --font-display: 'Anton', 'Bebas Neue', Impact, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ====== RESET ====== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  color: var(--cream);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
svg { display: block; }

/* ====== BACK LINK ====== */
.back-link {
  position: fixed;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 100;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: rgba(15, 10, 8, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--cream-soft);
  transition: all 0.3s var(--ease-out);
}
.back-link:hover {
  background: rgba(255, 107, 26, 0.2);
  border-color: rgba(255, 107, 26, 0.4);
  color: var(--cream);
}

/* ====== HERO ====== */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 1.5rem clamp(1.5rem, 4vw, 4rem) 4rem;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 70% 30%, rgba(255, 107, 26, 0.15), transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(200, 36, 28, 0.1), transparent 50%),
    linear-gradient(180deg, #0f0a08 0%, #1c1410 60%, #0f0a08 100%);
  isolation: isolate;
}

/* Canvas 3D fixed behind */
#burger-canvas {
  position: fixed;
  top: 0; right: 0;
  width: 70vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* Grain overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 1;
}

/* ====== NAV ====== */
.nav {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto 5rem;
  padding: 1.5rem 0;
}
.nav__logo {
  font-family: var(--font-display);
  font-size: 2.2rem;
  letter-spacing: 0.04em;
  line-height: 1;
}
.nav__logo-bun { color: var(--cream); }
.nav__logo-meat { color: var(--orange); }
.nav__links {
  display: flex;
  gap: 2.25rem;
}
.nav__links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--cream-soft);
  position: relative;
  transition: color 0.2s;
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -6px; left: 0;
  width: 0; height: 2px;
  background: var(--orange);
  transition: width 0.3s var(--ease-out);
}
.nav__links a:hover { color: var(--cream); }
.nav__links a:hover::after { width: 100%; }
.nav__cta {
  padding: 0.7rem 1.5rem;
  background: var(--cream);
  color: var(--bg);
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: all 0.3s var(--ease-out);
}
.nav__cta:hover {
  background: var(--orange);
  color: var(--cream);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255, 107, 26, 0.35);
}

/* ====== HERO CONTENT ====== */
.hero__content {
  position: relative;
  z-index: 5;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 1.1rem;
  background: rgba(254, 243, 231, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--cream-soft);
  margin-bottom: 2rem;
}
.hero__eyebrow .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px var(--green);
  animation: pulse 1.8s ease-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.6; transform: scale(1.2); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 9rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.005em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  max-width: 56%;
}
.hero__title-accent {
  color: var(--orange);
  font-style: italic;
}
.hero__title-outline {
  -webkit-text-stroke: 2px var(--cream);
  color: transparent;
}

.hero__lede {
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 460px;
  margin-bottom: 2.5rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.75rem;
  border-radius: 9999px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
}
.btn--primary {
  background: var(--orange);
  color: var(--cream);
  box-shadow: 0 10px 30px rgba(255, 107, 26, 0.3);
}
.btn--primary:hover {
  background: var(--orange-light);
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(255, 107, 26, 0.45);
}
.btn--primary svg { transition: transform 0.3s; }
.btn--primary:hover svg { transform: translateX(4px); }
.btn--ghost {
  background: transparent;
  color: var(--cream);
  border-color: var(--border);
}
.btn--ghost:hover {
  background: rgba(254, 243, 231, 0.08);
  border-color: var(--cream-soft);
}

.hero__stats {
  display: flex;
  gap: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  max-width: 56%;
}
.stat__value {
  font-family: var(--font-display);
  font-size: 2.25rem;
  line-height: 1;
  color: var(--cream);
}
.stat__value span {
  color: var(--orange);
  font-size: 0.65em;
}
.stat__label {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.4rem;
  letter-spacing: 0.04em;
}

/* ====== BURGER LOADER (cinema) ====== */
.burger-loader {
  position: fixed;
  top: 0;
  right: 0;
  width: 70vw;
  height: 100vh;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  pointer-events: none;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}
.burger-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.burger-loader__rings {
  position: relative;
  width: 120px;
  height: 120px;
}
.burger-loader__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--orange);
}
.burger-loader__ring--1 {
  animation: spin 1.4s linear infinite;
}
.burger-loader__ring--2 {
  inset: 14px;
  border-top-color: var(--yellow);
  animation: spin 2s linear infinite reverse;
}
.burger-loader__ring--3 {
  inset: 28px;
  border-top-color: var(--red);
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.burger-loader__text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}
.burger-loader__label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--text-dim);
}
.burger-loader__progress {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--cream);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 1100px) {
  .burger-loader { width: 100vw; }
}

/* ====== SCROLL HINT ====== */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  z-index: 5;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--text-dim);
  transition: opacity 0.4s var(--ease-out);
}
.scroll-hint.is-hidden { opacity: 0; }
.scroll-hint__bar {
  width: 2px; height: 50px;
  background: var(--border);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}
.scroll-hint__dot {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 12px;
  background: var(--orange);
  border-radius: 2px;
  animation: scrollHint 2s ease-in-out infinite;
}
@keyframes scrollHint {
  0%   { transform: translateY(-12px); opacity: 0; }
  40%  { opacity: 1; }
  100% { transform: translateY(50px); opacity: 0; }
}

/* ====== INGREDIENTS SECTION ====== */
.ingredients {
  position: relative;
  z-index: 5;
  padding: 7rem clamp(1.5rem, 4vw, 4rem);
  background: linear-gradient(180deg, transparent 0%, var(--bg) 100%);
}
.ingredients__inner {
  max-width: 1400px;
  margin: 0 auto;
}
.section-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--orange);
  margin-bottom: 1.25rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 6vw, 5rem);
  line-height: 0.95;
  text-transform: uppercase;
  margin-bottom: 3rem;
}
.section-title em {
  font-style: italic;
  color: var(--orange);
}
.ingredients__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.ingredient {
  padding: 2rem 1.75rem;
  background: rgba(254, 243, 231, 0.04);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.3s var(--ease-out);
}
.ingredient:hover {
  background: rgba(255, 107, 26, 0.08);
  border-color: rgba(255, 107, 26, 0.3);
  transform: translateY(-4px);
}
.ingredient__emoji {
  font-size: 2.4rem;
  margin-bottom: 0.9rem;
}
.ingredient h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.4rem;
  color: var(--cream);
}
.ingredient p {
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--text-muted);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 1100px) {
  .hero__title, .hero__stats { max-width: 100%; }
  #burger-canvas {
    width: 100vw;
    opacity: 0.6;
    z-index: 0;
  }
  .hero__content > * { position: relative; z-index: 5; }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .hero { padding-top: 1rem; }
  .nav { margin-bottom: 3rem; }
  .hero__stats { gap: 1.5rem; flex-wrap: wrap; }
  .stat__value { font-size: 1.75rem; }
  .scroll-hint { display: none; }
  .back-link { top: 1rem; left: 1rem; }
}