/*
 * Chivo's Studio — Design System
 * Source of truth: tokens, typography, animations, shared components
 * chivos.co · 2026
 */

/* ── RESET ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
h1, h2, h3, h4, h5, h6 { font-weight: 400; font-size: inherit; }

/* ── TOKENS ─────────────────────────────────────────────────────────────────── */
:root {
  /* ─ Backgrounds */
  --bg-home:    #1a1a1a;   /* landing page — slightly warm dark */
  --bg:         #111;      /* neutral dark */
  --bg-deep:    #0e0e0e;   /* canvas / case study pages */

  /* ─ Text */
  --text:       #E8E6E0;
  --muted:      rgba(232,230,224,0.38);
  --faint:      rgba(232,230,224,0.07);
  --dim:        rgba(232,230,224,0.18);
  --dimmer:     rgba(232,230,224,0.14);

  /* ─ Borders */
  --border:     rgba(232,230,224,0.10);
  --border-mid: rgba(232,230,224,0.18);

  /* ─ Accent — sambayón gold */
  --gold:       rgb(244,218,155);
  --gold-dim:   rgba(244,218,155,0.55);
  --gold-ghost: rgba(244,218,155,0.18);

  /* ─ Typography */
  --font:       'Grantha Sangam MN', 'Grantha Sangam', Georgia, serif;

  /* ─ Size scale */
  --sz-2xs:     0.42rem;
  --sz-xs:      0.48rem;
  --sz-sm:      0.54rem;
  --sz-md:      0.62rem;
  --sz-base:    0.88rem;
  --sz-lg:      1.1rem;
  --sz-xl:      clamp(2.2rem, 5.5vw, 3.6rem);

  /* ─ Letter spacing */
  --ls-xl:      0.35em;
  --ls-lg:      0.28em;
  --ls-md:      0.22em;
  --ls-sm:      0.18em;
  --ls-xs:      0.10em;

  /* ─ Easing */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-std:   cubic-bezier(0.25, 1, 0.5, 1);
}

/* ── BASE ────────────────────────────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font);
  overflow-x: hidden;
  animation: pageFadeIn 0.45s ease both;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

@keyframes pageFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

body.page-exit {
  animation: pageFadeOut 0.28s ease forwards;
  pointer-events: none;
}

@keyframes pageFadeOut {
  to { opacity: 0; }
}

/* ── SCREEN READER ONLY ──────────────────────────────────────────────────────── */
.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: fixed; top: 1rem; left: 1rem;
  background: var(--bg-deep); color: var(--text);
  font-size: var(--sz-sm); letter-spacing: var(--ls-md);
  text-transform: uppercase; text-decoration: none;
  padding: 0.6rem 1.2rem; border: 1px solid var(--border-mid);
  z-index: 9999;
  transform: translateY(-200%);
  transition: transform 0.2s ease;
}
.skip-link:focus { transform: translateY(0); }

/* ── FOCUS VISIBLE ───────────────────────────────────────────────────────────── */
:focus { outline: none; }
:focus-visible {
  outline: 1px solid rgba(232,230,224,0.35);
  outline-offset: 3px;
}

/* ── REDUCED MOTION ──────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ── GRAIN OVERLAY ──────────────────────────────────────────────────────────── */
body::after {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 998;
  mix-blend-mode: overlay;
}

/* ── ANIMATIONS ─────────────────────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes sq-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.25; }
}

@keyframes fin {
  to { opacity: 1; }
}

/* ── NAVIGATION ─────────────────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.8rem 2.2rem;
  z-index: 100;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, padding 0.4s ease;
}
.nav.scrolled {
  background: rgba(14,14,14,0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding-top: 1.2rem;
  padding-bottom: 1.2rem;
}

.back {
  font-size: var(--sz-sm);
  letter-spacing: var(--ls-md);
  text-transform: uppercase;
  color: var(--dim);
  text-decoration: none;
  transition: color 0.3s;
}
.back:hover { color: rgba(232,230,224,0.55); }

.nav-right {
  font-size: 0.50rem;
  letter-spacing: var(--ls-sm);
  text-transform: uppercase;
  color: var(--dimmer);
}

/* ── DIVIDER ─────────────────────────────────────────────────────────────────── */
.divider {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--faint), transparent);
  margin: 0 2.2rem;
  display: block;
}

.divider--center {
  margin: 0 auto;
  height: 40px;
}

/* ── DOT (blinking accent) ──────────────────────────────────────────────────── */
.dot {
  width: 4px; height: 4px;
  background: rgba(232,230,224,0.35);
  display: inline-block;
  flex-shrink: 0;
  animation: blink 1.4s ease-in-out infinite;
}

/* ── LABEL (small-caps utility) ─────────────────────────────────────────────── */
.label {
  font-size: var(--sz-sm);
  letter-spacing: var(--ls-md);
  text-transform: uppercase;
  color: rgba(232,230,224,0.22);
  display: flex;
  align-items: center;
  gap: 0.6em;
}

/* ── FOOTER ──────────────────────────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 2rem 2rem 3.5rem;
  font-size: var(--sz-2xs);
  letter-spacing: var(--ls-md);
  text-transform: uppercase;
  color: var(--dim);
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}
.site-footer a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s;
}
.site-footer a:hover { color: rgba(232,230,224,0.5); }
.footer-sep { margin: 0 0.8em; }

/* ── SEND BUTTON ─────────────────────────────────────────────────────────────── */
.send-btn {
  margin-top: 2rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font);
  font-size: 0.58rem;
  letter-spacing: var(--ls-lg);
  text-transform: uppercase;
  padding: 0.8rem 2rem;
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s, color 0.25s;
}
.send-btn:hover {
  background: var(--text);
  color: var(--bg-deep);
  border-color: var(--text);
}

/* ── UNIVERSE BUTTON ─────────────────────────────────────────────────────────── */
.universe-btn {
  display: flex;
  align-items: center;
  gap: 0.7em;
  width: fit-content;
  margin: 2.4rem auto 0;
  font-size: 0.6rem;
  letter-spacing: var(--ls-lg);
  text-transform: uppercase;
  color: rgba(235,235,235,0.26);
  text-decoration: none;
  border-bottom: 1px solid rgba(235,235,235,0.1);
  padding-bottom: 0.18rem;
  background: none;
  transition: color 0.3s, border-color 0.3s;
}
.universe-btn:hover {
  color: rgba(235,235,235,0.65);
  border-color: rgba(235,235,235,0.3);
}
.universe-btn .dot {
  width: 5px; height: 5px;
  background: rgba(235,235,235,0.5);
  animation: blink 1.4s ease-in-out infinite;
}

/* ── PROJECT META ────────────────────────────────────────────────────────────── */
.project-meta {
  font-size: var(--sz-sm);
  letter-spacing: var(--ls-md);
  text-transform: uppercase;
  color: rgba(232,230,224,0.22);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6em;
}

.project-title {
  font-size: var(--sz-xl);
  font-weight: 400;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 1rem;
}

.project-category {
  font-size: 0.56rem;
  letter-spacing: var(--ls-lg);
  text-transform: uppercase;
  color: rgba(232,230,224,0.22);
}

.project-meta-row {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  flex-wrap: wrap;
}

.project-live {
  font-size: var(--sz-xs);
  letter-spacing: var(--ls-md);
  text-transform: uppercase;
  color: rgba(232,230,224,0.22);
  text-decoration: none;
  border-bottom: 1px solid rgba(232,230,224,0.1);
  padding-bottom: 0.15rem;
  transition: color 0.3s, border-color 0.3s;
}
.project-live:hover {
  color: rgba(232,230,224,0.55);
  border-color: rgba(232,230,224,0.3);
}

/* ── OVERVIEW / DELIVERABLES ─────────────────────────────────────────────────── */
.overview-label {
  font-size: var(--sz-sm);
  letter-spacing: var(--ls-md);
  text-transform: uppercase;
  color: rgba(232,230,224,0.22);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6em;
}

.overview-text {
  font-size: var(--sz-base);
  line-height: 1.85;
  color: var(--muted);
}
.overview-text em { color: var(--text); font-style: italic; }

.deliverables-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.deliverables-list li {
  font-size: var(--sz-base);
  color: var(--muted);
  padding-left: 1rem;
  position: relative;
  line-height: 1.85;
}
.deliverables-list li::before {
  content: '';
  position: absolute; left: 0; top: 0.65em;
  width: 3px; height: 3px;
  background: rgba(232,230,224,0.18);
}

/* ── SCROLL PROGRESS ────────────────────────────────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 1px;
  width: 0%;
  background: rgba(232,230,224,0.28);
  z-index: 150;
  pointer-events: none;
  transition: width 0.08s linear;
}

/* ── START A PROJECT CTA ─────────────────────────────────────────────────────── */
.project-cta {
  padding: 3rem 2.2rem 0;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.project-cta__label {
  font-size: var(--sz-xs);
  letter-spacing: var(--ls-md);
  color: rgba(232,230,224,0.18);
}
.project-cta__link {
  font-size: clamp(1.1rem, 2.8vw, 1.6rem);
  font-weight: 400;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.2rem;
  width: fit-content;
  transition: color 0.3s, border-color 0.3s;
}
.project-cta__link:hover {
  color: var(--text);
  border-color: rgba(232,230,224,0.3);
}

/* ── CASE STUDY NAV (prev / next) ────────────────────────────────────────────── */
.cs-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2.4rem 2.2rem 4rem;
  max-width: 900px;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.cs-nav-link {
  font-size: var(--sz-xs);
  letter-spacing: var(--ls-md);
  text-transform: uppercase;
  color: var(--dim);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.6em;
  transition: color 0.3s;
}
.cs-nav-link:hover { color: rgba(232,230,224,0.55); }
.cs-nav-link--right { flex-direction: row-reverse; }

/* ── CS-NAV HOVER PREVIEW ────────────────────────────────────────────────────── */
.cs-preview {
  position: fixed;
  pointer-events: none;
  width: 200px;
  opacity: 0;
  transform: scale(0.94) translateY(8px);
  transition: opacity 0.22s ease, transform 0.22s ease;
  z-index: 50;
  border: 1px solid rgba(232,230,224,0.08);
  overflow: hidden;
  background: #0e0e0e;
}
.cs-preview.show { opacity: 1; transform: scale(1) translateY(0); }
.cs-preview img  { width: 100%; height: 118px; display: block; object-fit: cover; }

/* ── SCROLL REVEAL ───────────────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal--delay {
  transition-delay: 0.1s;
}
.reveal--delay2 {
  transition-delay: 0.2s;
}
.reveal--late {
  transition-delay: 0.15s;
}

/* ── FORM ────────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.3rem; }
.form-group label {
  display: block;
  font-size: 0.52rem;
  letter-spacing: var(--ls-md);
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 0.38rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--sz-base);
  padding: 0.44rem 0;
  outline: none;
  transition: border-color 0.25s;
  caret-color: var(--text);
  -webkit-appearance: none;
  border-radius: 0;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(235,235,235,0.14);
  font-style: normal;
}
.form-group input:-webkit-autofill {
  -webkit-box-shadow: 0 0 0 1000px #111 inset;
  -webkit-text-fill-color: #E8E6E0;
}
.form-group input:focus,
.form-group textarea:focus { border-bottom-color: rgba(232,230,224,0.32); }
.form-group textarea { resize: none; min-height: 80px; line-height: 1.6; }
.form-group input[readonly] {
  color: rgba(235,235,235,0.35);
  cursor: default;
}

.send-confirm {
  margin-top: 1rem;
  font-size: 0.5rem;
  letter-spacing: var(--ls-sm);
  color: rgba(232,230,224,0.3);
  opacity: 0;
  transition: opacity 0.6s ease;
}
.send-confirm.show { opacity: 1; }

.field-error {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.44rem;
  letter-spacing: 0.16em;
  color: rgba(232,200,180,0.65);
  opacity: 0;
  transition: opacity 0.3s;
}
.field-error.show { opacity: 1; }
.form-group input.invalid,
.form-group textarea.invalid { border-bottom-color: rgba(232,200,180,0.45); }