/* ============================
   RESET
============================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { min-height: 100dvh; background: var(--ink); color: var(--parchment); font-family: 'Libre Franklin', sans-serif; font-size: 1rem; line-height: 1.6; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; font-feature-settings: "kern" 1, "liga" 1; }
.section p, .cta-band p, .page-hero-content p { max-width: 70ch; }
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ============================
   TOKENS (OKLCH)
============================ */
:root {
  --ink:        oklch(14.7% 0.009 70);
  --ink-2:      oklch(18.9% 0.015 70);
  --ink-3:      oklch(23% 0.012 70);
  --parchment:  oklch(93% 0.02 85);
  --dust:       oklch(70% 0.03 80);
  --muted:      oklch(55% 0.02 75);
  --copper:     oklch(65% 0.14 55);
  --copper-dim: oklch(55% 0.10 55);
  --copper-glow: oklch(65% 0.14 55 / 0.15);
  --steel:      oklch(60% 0.03 240);
  --steel-dim:  oklch(50% 0.02 240);
  --font-display: 'Marcellus', serif;
  --font-body:    'Libre Franklin', sans-serif;
  --section-pad:  clamp(5rem, 12vw, 10rem);
  --max-w:        1160px;
  /* Spacing scale (4pt base) */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   32px;
  --space-2xl:  48px;
  --space-3xl:  64px;
  --space-4xl:  96px;
}

/* ============================
   ACCESSIBILITY
============================ */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; top: -100%; left: 1rem; z-index: 9999;
  padding: 0.75rem 1.5rem; background: var(--copper); color: var(--ink);
  font-weight: 600; border-radius: 0 0 0.5rem 0.5rem;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* ============================
   GRAIN OVERLAY
============================ */
.grain {
  position: fixed; inset: 0; z-index: 9998;
  pointer-events: none; opacity: 0.25;
  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='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.06'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

/* ============================
   NAVIGATION
============================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 1.25rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
  transition: background 0.4s, backdrop-filter 0.4s, border-bottom 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: oklch(14.7% 0.009 70 / 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid oklch(65% 0.14 55 / 0.15);
  box-shadow: 0 1px 24px oklch(14.7% 0.009 70 / 0.5);
}
.nav-logo {
  font-family: var(--font-display); font-size: 1.1rem; letter-spacing: 0.08em;
  color: var(--copper);
}
.nav-links { display: flex; gap: 2rem; }
.nav-links a {
  font-size: 0.8rem; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--dust); position: relative; transition: color 0.3s;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1px; background: var(--copper);
  transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--parchment); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--copper); }
.nav-links a.active::after { width: 100%; }

/* Mobile hamburger */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; min-width: 44px; min-height: 44px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--parchment);
  margin: 5px 0; transition: transform 0.3s, opacity 0.3s;
}
.mobile-menu {
  display: flex; position: fixed; inset: 0; z-index: 99;
  background: oklch(14.7% 0.009 70 / 0.95); backdrop-filter: blur(20px);
  flex-direction: column; align-items: center; justify-content: center; gap: 2rem;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.25, 1, 0.5, 1), visibility 0.4s;
}
.mobile-menu.open { opacity: 1; visibility: visible; pointer-events: auto; }
.mobile-menu a {
  font-family: var(--font-display); font-size: 1.5rem; color: var(--parchment);
  letter-spacing: 0.06em;
  transform: translateY(20px); opacity: 0;
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s, color 0.3s;
  transition-delay: 0s;
}
.mobile-menu.open a {
  transform: translateY(0); opacity: 1;
}
.mobile-menu.open a:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu.open a:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu.open a:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu.open a:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu.open a:nth-child(5) { transition-delay: 0.25s; }
.mobile-menu a:hover { color: var(--copper); }

/* Hamburger → X morph */
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
}

/* ============================
   GRADIENT ROTATION (for buttons)
============================ */
@property --gradient-angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}
@keyframes gradient-rotate {
  to { --gradient-angle: 360deg; }
}

/* ============================
   BUTTONS
============================ */
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.9rem 2rem; min-height: 44px;
  background: conic-gradient(from var(--gradient-angle),
    oklch(65% 0.14 55), oklch(70% 0.15 50),
    oklch(65% 0.14 55), oklch(60% 0.12 60),
    oklch(65% 0.14 55));
  color: var(--ink);
  font-family: var(--font-body); font-size: 0.85rem; font-weight: 500;
  letter-spacing: 0.04em; text-transform: uppercase;
  border: none; border-radius: 4px;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), box-shadow 0.3s ease;
  text-decoration: none;
  animation: gradient-rotate 6s linear infinite;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px oklch(65% 0.14 55 / 0.35);
}
.btn-primary:active {
  transform: translateY(0) scale(0.97);
  box-shadow: 0 2px 12px oklch(65% 0.14 55 / 0.2);
}
.btn-ghost {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: calc(0.9rem - 1px) calc(2rem - 1px); min-height: 44px;
  color: var(--parchment);
  font-family: var(--font-body); font-size: 0.85rem; font-weight: 500;
  letter-spacing: 0.04em; text-transform: uppercase;
  border: 2px solid transparent; border-radius: 4px;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1), color 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  background:
    linear-gradient(var(--ink), var(--ink)) padding-box,
    conic-gradient(from var(--gradient-angle),
      oklch(65% 0.14 55 / 0.35), oklch(93% 0.02 85 / 0.12),
      oklch(60% 0.03 240 / 0.25), oklch(93% 0.02 85 / 0.12),
      oklch(65% 0.14 55 / 0.35)) border-box;
  animation: gradient-rotate 4s linear infinite;
}
.btn-ghost:hover {
  color: var(--copper);
  transform: translateY(-2px);
  background:
    linear-gradient(var(--ink), var(--ink)) padding-box,
    conic-gradient(from var(--gradient-angle),
      oklch(65% 0.14 55), oklch(55% 0.10 55),
      oklch(60% 0.03 240 / 0.6), oklch(55% 0.10 55),
      oklch(65% 0.14 55)) border-box;
  box-shadow: 0 4px 20px oklch(65% 0.14 55 / 0.15);
}
.btn-ghost:active {
  transform: translateY(0) scale(0.97);
}

/* ============================
   SERVICE CARDS
============================ */
.card {
  position: relative; overflow: hidden; border-radius: 8px;
  aspect-ratio: 4/5; cursor: pointer;
  border: 1px solid oklch(93% 0.02 85 / 0.06);
  transition: border-color 0.4s;
}
.card:hover { border-color: var(--copper-glow); }
.card-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transition: transform 0.6s ease;
}
.card:hover .card-bg { transform: scale(1.08); }
.card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 30%, oklch(14.7% 0.009 70 / 0.9) 100%);
}
.card-glow {
  position: absolute; inset: 0; opacity: 0;
  transition: opacity 0.4s; pointer-events: none;
}
.card:hover .card-glow { opacity: 1; }
.card-content {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 1.5rem; z-index: 2;
}
.card-content h3 {
  font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 0.4rem;
}
.card-content p {
  font-size: 0.85rem; color: var(--dust); line-height: 1.5;
  max-height: 0; overflow: hidden; opacity: 0;
  transition: max-height 0.5s ease, opacity 0.4s ease;
}
.card:hover .card-content p { max-height: 4rem; opacity: 1; }

/* ============================
   PAGE HERO (sub-pages)
============================ */
.page-hero {
  position: relative; min-height: 50vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden; padding-top: 80px;
}
.page-hero-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
}
.page-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, oklch(14.7% 0.009 70 / 0.75) 0%, oklch(14.7% 0.009 70 / 0.92) 100%);
}
.page-hero-content { position: relative; z-index: 2; max-width: var(--max-w); padding: 2rem; }
.page-hero-content h1 {
  font-family: var(--font-display); font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.1; margin-bottom: 1rem;
}
.page-hero-content p { font-size: 1.1rem; color: var(--dust); max-width: 600px; margin: 0 auto; }

/* ============================
   FOOTER
============================ */
.footer {
  border-top: 1px solid oklch(65% 0.14 55 / 0.1);
  padding: var(--space-4xl) 2rem var(--space-xl);
  position: relative;
  container-type: inline-size;
}
.footer::before {
  content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: min(80%, var(--max-w)); height: 1px;
  background: linear-gradient(90deg, transparent, oklch(65% 0.14 55 / 0.25), transparent);
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--space-3xl);
}
.footer-brand h3 {
  font-family: var(--font-display); font-size: 1.2rem; color: var(--copper);
  margin-bottom: var(--space-sm);
}
.footer-brand p { font-size: 0.85rem; color: var(--dust); line-height: 1.7; }
.footer h4 {
  font-family: var(--font-display); font-size: 0.6rem; text-transform: uppercase;
  letter-spacing: 0.4em; color: var(--copper-dim); margin-bottom: var(--space-md);
  display: flex; align-items: center; gap: 0.75rem;
}
.footer h4::after {
  content: ''; flex: 1; height: 1px;
  background: linear-gradient(90deg, oklch(65% 0.14 55 / 0.15), transparent);
}
.footer a {
  display: block; font-size: 0.85rem; color: var(--dust);
  padding: var(--space-xs) 0; transition: color 0.3s;
}
.footer a:hover { color: var(--copper); }
.footer-bottom {
  max-width: var(--max-w); margin: var(--space-2xl) auto 0;
  padding-top: var(--space-lg); border-top: 1px solid oklch(93% 0.02 85 / 0.06);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.7rem; color: var(--muted); letter-spacing: 0.04em;
}
@container (max-width: 600px) {
  .footer-inner { grid-template-columns: 1fr; gap: var(--space-xl); }
}

/* ============================
   SECTION UTILITIES
============================ */
.section { padding: var(--section-pad) 2rem; position: relative; overflow: hidden; }
.section-inner { max-width: var(--max-w); margin: 0 auto; container-type: inline-size; }
.section-label {
  display: flex; align-items: center; gap: var(--space-md);
  font-family: var(--font-display); font-size: 0.6rem; text-transform: uppercase;
  letter-spacing: 0.35em; color: var(--copper); margin-bottom: var(--space-md);
}
.section-label::before {
  content: ''; width: var(--space-xl); height: 1px; background: var(--copper);
}
.section-title {
  font-family: var(--font-display); font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  line-height: 1.1; margin-bottom: var(--space-lg);
}
.gradient-divider {
  height: 1px; border: none; margin: 0;
  background: linear-gradient(90deg, transparent 0%, var(--copper) 50%, transparent 100%);
  opacity: 0.3;
}

/* ============================
   ATMOSPHERE
============================ */
body::before {
  content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 15% 85%, oklch(65% 0.14 55 / 0.04) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 85% 15%, oklch(60% 0.03 240 / 0.03) 0%, transparent 50%);
}

/* ============================
   SCROLLBAR
============================ */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--copper-dim); border-radius: 2px; }

/* ============================
   SELECTION
============================ */
::selection { background: oklch(65% 0.14 55 / 0.3); color: var(--parchment); }

/* ============================
   FOCUS
============================ */
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; }

/* ============================
   CINEMATIC UTILITIES
============================ */
/* Stop-frame clip masks — applied via GSAP */
.reveal-frame {
  clip-path: inset(0 0 100% 0);
}
.reveal-wipe-lr {
  clip-path: inset(0 100% 0 0);
}
.reveal-wipe-rl {
  clip-path: inset(0 0 0 100%);
}

/* Horizontal film-strip rule */
.film-rule {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0 auto;
  max-width: var(--max-w);
  padding: 0 2rem;
}
.film-rule::before,
.film-rule::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--copper-dim), transparent);
}
.film-rule span {
  font-family: var(--font-display);
  font-size: 0.55rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

/* Frame counter (appears on sections) */
.frame-counter {
  font-family: var(--font-display);
  font-size: 0.55rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--copper-dim);
  opacity: 0.6;
}
.frame-counter::before {
  content: '[ ';
}
.frame-counter::after {
  content: ' ]';
}

/* Parallax-ready image containers */
.parallax-frame {
  position: relative;
  overflow: hidden;
}
.parallax-frame img {
  width: 100%;
  height: 120%;
  object-fit: cover;
  will-change: transform;
}

/* Letterbox bars for cinematic hero sections */
.letterbox-top,
.letterbox-bottom {
  position: absolute;
  left: 0;
  right: 0;
  height: 0;
  background: var(--ink);
  z-index: 5;
  pointer-events: none;
}
.letterbox-top { top: 0; }
.letterbox-bottom { bottom: 0; }

/* Magnetic button wrapper */
.magnetic {
  display: inline-block;
  transition: transform 0.3s cubic-bezier(0.2, 0, 0.2, 1);
}

/* ============================
   WHATSAPP FLOATING WIDGET
============================ */
.whatsapp-widget {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 95;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 1.4rem 0.9rem 1.1rem;
  background: color-mix(in oklch, var(--copper) 8%, transparent);
  color: var(--parchment);
  border: 1px solid color-mix(in oklch, var(--copper) 32%, transparent);
  border-radius: 100px;
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.3s cubic-bezier(0.1, 0.4, 0.2, 1),
              box-shadow 0.3s cubic-bezier(0.1, 0.4, 0.2, 1),
              border-color 0.3s ease;
  box-shadow:
    0 0 8px oklch(0% 0 0 / 0.10),
    0 6px 20px oklch(0% 0 0 / 0.22),
    inset 3px 3px 0.5px -3.5px oklch(100% 0 0 / 0.10),
    inset -3px -3px 0.5px -3.5px oklch(100% 0 0 / 0.85),
    inset 1px 1px 1px -0.5px oklch(100% 0 0 / 0.55),
    inset -1px -1px 1px -0.5px oklch(100% 0 0 / 0.55),
    inset 0 0 6px 6px oklch(100% 0 0 / 0.10),
    inset 0 0 2px 2px oklch(100% 0 0 / 0.06),
    0 0 16px var(--copper-glow);
  will-change: transform;
}

/* Glass distortion layer */
.whatsapp-widget::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  overflow: hidden;
  backdrop-filter: url("#liquid-glass") blur(8px);
  -webkit-backdrop-filter: url("#liquid-glass") blur(8px);
}

/* Top highlight rim */
.whatsapp-widget::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    oklch(100% 0 0 / 0.07) 0%,
    transparent 50%
  );
}

.whatsapp-widget:hover,
.whatsapp-widget:focus-visible {
  transform: scale(1.05);
  border-color: color-mix(in oklch, var(--copper) 55%, transparent);
  box-shadow:
    0 0 8px oklch(0% 0 0 / 0.10),
    0 8px 24px oklch(0% 0 0 / 0.28),
    inset 3px 3px 0.5px -3.5px oklch(100% 0 0 / 0.14),
    inset -3px -3px 0.5px -3.5px oklch(100% 0 0 / 0.9),
    inset 1px 1px 1px -0.5px oklch(100% 0 0 / 0.65),
    inset -1px -1px 1px -0.5px oklch(100% 0 0 / 0.65),
    inset 0 0 6px 6px oklch(100% 0 0 / 0.13),
    inset 0 0 2px 2px oklch(100% 0 0 / 0.08),
    0 0 28px color-mix(in oklch, var(--copper) 35%, transparent);
}

.whatsapp-widget:active {
  transform: scale(0.97);
}

.whatsapp-widget:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 4px;
}

.whatsapp-widget svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  fill: #25D366; /* keep WhatsApp green for instant recognition */
  position: relative;
}

.whatsapp-widget .whatsapp-label {
  white-space: nowrap;
  position: relative;
}

/* Icon-only on small screens */
@media (max-width: 540px) {
  .whatsapp-widget {
    padding: 0.95rem;
    border-radius: 50%;
  }
  .whatsapp-widget .whatsapp-label {
    display: none;
  }
  .whatsapp-widget svg {
    width: 24px;
    height: 24px;
  }
}

/* ============================
   REDUCED MOTION
============================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}