/* ─────────────────────────────────────────────
   DESIGN TOKENS
───────────────────────────────────────────── */
:root {
  /* Color — dark canvas with warm amber accent */
  --color-bg:           #1c0424;
  --color-bg-raised:    #230530;
  --color-bg-card:      #2e0838;
  --color-bg-card-alt:  #3a0a42;
  --color-border:       rgba(255,255,255,0.07);
  --color-border-light: rgba(255,255,255,0.12);

  --color-accent:       #FF4635;
  --color-accent-light: #ff7266;
  --color-accent-dim:   rgba(255,70,53,0.12);
  --color-accent-glow:  rgba(255,70,53,0.06);

  --color-text-primary:   #f2ede8;
  --color-text-secondary: #b09898;
  --color-text-muted:     #6e4d52;
  --color-text-inverse:   #1c0424;

  /* Typography */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'DM Sans', sans-serif;

  --size-xs:   0.75rem;   /* 12px */
  --size-sm:   0.875rem;  /* 14px */
  --size-base: 1rem;      /* 16px */
  --size-md:   1.125rem;  /* 18px */
  --size-lg:   1.375rem;  /* 22px */
  --size-xl:   1.75rem;   /* 28px */
  --size-2xl:  2.25rem;   /* 36px */
  --size-3xl:  3rem;      /* 48px */
  --size-4xl:  4rem;      /* 64px */
  --size-5xl:  5.5rem;    /* 88px */
  --size-6xl:  7.5rem;    /* 120px */

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  --space-40: 10rem;

  /* Motion */
  --ease-out-expo:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:     cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast:   160ms;
  --duration-base:   280ms;
  --duration-slow:   500ms;
  --duration-reveal: 900ms;

  /* Layout */
  --container-max: 1200px;
  --container-wide: 1440px;
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-xl:  24px;
}

/* ─────────────────────────────────────────────
   RESET & BASE
───────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--size-base);
  line-height: 1.6;
  overflow-x: hidden;
}

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

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ─────────────────────────────────────────────
   NOISE TEXTURE OVERLAY
───────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 128px 128px;
}

/* ─────────────────────────────────────────────
   LAYOUT UTILITIES
───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

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

.container--text {
  max-width: 720px;
}

/* ─────────────────────────────────────────────
   REVEAL ANIMATIONS
───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity var(--duration-reveal) var(--ease-out-expo),
    transform var(--duration-reveal) var(--ease-out-expo);
}

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

.reveal--delay-1 { transition-delay: 100ms; }
.reveal--delay-2 { transition-delay: 200ms; }
.reveal--delay-3 { transition-delay: 320ms; }
.reveal--delay-4 { transition-delay: 440ms; }
.reveal--delay-5 { transition-delay: 560ms; }

/* Fade-in only variant */
.reveal-fade {
  opacity: 0;
  transition: opacity var(--duration-reveal) var(--ease-out-expo);
}
.reveal-fade.is-visible { opacity: 1; }

/* ─────────────────────────────────────────────
   NAV
───────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  isolation: isolate;
  padding-block: var(--space-5);
  transition: background var(--duration-base) var(--ease-in-out),
              backdrop-filter var(--duration-base) var(--ease-in-out),
              border-color var(--duration-base) var(--ease-in-out);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background: rgba(12,11,9,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-color: var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: var(--size-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  line-height: 1;
}

.nav__logo span {
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav__links a {
  font-size: var(--size-sm);
  font-weight: 400;
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.nav__links a:hover,
.nav__links a.is-active {
  color: var(--color-text-primary);
}

.nav__cta {
  font-size: var(--size-sm);
  font-weight: 500;
  color: var(--color-text-inverse) !important;
  background: var(--color-accent);
  padding: var(--space-2) var(--space-5);
  border-radius: 100px;
  white-space: nowrap;
  transition: background var(--duration-fast) var(--ease-in-out),
              transform var(--duration-fast) var(--ease-in-out) !important;
}

.nav__cta:hover {
  background: var(--color-accent-light) !important;
  transform: translateY(-1px);
}

/* ── Hamburger button ── */
.nav__hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-text-primary);
  border-radius: var(--radius-md);
  transition: background var(--duration-fast) var(--ease-in-out);
  flex-shrink: 0;
}
.nav__hamburger:hover { background: rgba(255,255,255,0.06); }
.nav__hamburger svg { display: block; }
.nav__hamburger .icon-close { display: none; }
.nav.is-open { z-index: 10001; }
.nav.is-open .nav__hamburger .icon-open  { display: none; }
.nav.is-open .nav__hamburger .icon-close { display: block; }

/* ── Mobile menu panel ── */
.nav__mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  background: rgba(28,4,36,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-20) var(--space-8);
  opacity: 0;
  transform: translateY(-8px);
  transition:
    opacity var(--duration-base) var(--ease-out-expo),
    transform var(--duration-base) var(--ease-out-expo);
}
.nav__mobile-menu.is-open {
  opacity: 1;
  transform: translateY(0);
}
.nav__mobile-menu a {
  font-family: var(--font-display);
  font-size: var(--size-2xl);
  font-weight: 300;
  color: var(--color-text-secondary);
  letter-spacing: -0.02em;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  transition: color var(--duration-fast) var(--ease-in-out);
  text-decoration: none;
}
.nav__mobile-menu a:hover { color: var(--color-text-primary); }
.nav__mobile-menu .nav__mobile-cta {
  font-family: var(--font-body);
  font-size: var(--size-base);
  font-weight: 500;
  color: var(--color-text-inverse) !important;
  background: var(--color-accent);
  padding: var(--space-3) var(--space-8);
  border-radius: 100px;
  margin-top: var(--space-4);
  white-space: nowrap;
}
.nav__mobile-menu .nav__mobile-cta:hover { background: var(--color-accent-light) !important; }

/* ─────────────────────────────────────────────
   BUTTONS
───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--size-base);
  line-height: 1;
  border: none;
  cursor: pointer;
  transition:
    background var(--duration-fast) var(--ease-in-out),
    color var(--duration-fast) var(--ease-in-out),
    transform var(--duration-base) var(--ease-out-expo),
    box-shadow var(--duration-base) var(--ease-out-expo);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  padding: var(--space-4) var(--space-8);
  border-radius: 100px;
  white-space: nowrap;
}

.btn--primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(232,168,50,0.28);
}

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

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: var(--space-4) var(--space-8);
  border-radius: 100px;
  border: 1px solid var(--color-border-light);
}

.btn--ghost:hover {
  color: var(--color-text-primary);
  border-color: rgba(255,255,255,0.28);
  transform: translateY(-2px);
}

.btn--ghost:active {
  transform: translateY(0);
}

/* Arrow icon in button */
.btn .arrow {
  display: inline-block;
  transition: transform var(--duration-base) var(--ease-out-expo);
}

.btn:hover .arrow {
  transform: translateX(4px);
}

/* ─────────────────────────────────────────────
   SECTION LABEL
───────────────────────────────────────────── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--size-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* ─────────────────────────────────────────────
   FOOTER
───────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-10);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__logo {
  font-family: var(--font-display);
  font-size: var(--size-base);
  font-weight: 700;
  color: var(--color-text-secondary);
}

.footer__logo span { color: var(--color-accent); }

.footer__copy {
  font-size: var(--size-xs);
  color: var(--color-text-muted);
}

/* ─────────────────────────────────────────────
   RESPONSIVE — NAV & FOOTER
───────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav__links { display: none !important; }
  .nav__hamburger { display: flex; }
  .nav__mobile-menu.is-open { display: flex; }

  .footer__inner {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container { padding-inline: var(--space-5); }
}