/* ============================================================
   Higher Roads — Shared Design System
   Linked by: index, motion/, 3d/, immersive/, about/, and
   future case-study / pitch pages using the standard chrome.
   Page-specific layout (hero, work grids, forms, etc.) stays
   inline on each page.
   ============================================================ */

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

/* ── THEME TOKENS ── */
:root, [data-theme="ember"] {
  --black: #0a0906;
  --dark: #181510;
  --accent: #e8782a;
  --accent-dim: #a04f18;
  --glow: rgba(232, 120, 42, 0.07);
  --white: #f5ede2;
  --muted: #6b6057;
  --border: rgba(232, 120, 42, 0.18);
}

[data-theme="neon-noir"] {
  --black: #07050f;
  --dark: #0e0a1a;
  --accent: #f72585;
  --accent-dim: #7b1fa2;
  --glow: rgba(183, 0, 255, 0.08);
  --white: #ede8f5;
  --muted: #5c5470;
  --border: rgba(247, 37, 133, 0.2);
}

[data-theme="ice"] {
  --black: #050810;
  --dark: #0a0f1e;
  --accent: #4fc3f7;
  --accent-dim: #1a6a8a;
  --glow: rgba(79, 195, 247, 0.07);
  --white: #e8f4f8;
  --muted: #4a6070;
  --border: rgba(79, 195, 247, 0.18);
}

[data-theme="acid"] {
  --black: #040a04;
  --dark: #081208;
  --accent: #39ff14;
  --accent-dim: #1a7a08;
  --glow: rgba(57, 255, 20, 0.06);
  --white: #e8f5e8;
  --muted: #4a6b4a;
  --border: rgba(57, 255, 20, 0.18);
}

/* ── BASE ── */
html, body {
  min-height: 100%;
  background-color: var(--black);
  color: var(--white);
  font-family: 'Barlow', sans-serif;
  font-weight: 300;
  overflow-x: hidden;
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* Radial atmospheric glow */
body::after {
  content: '';
  position: fixed;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(ellipse, var(--glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  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='0.06'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.8;
}

.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── HEADER ── */
header {
  padding: 2rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  animation: fadeDown 0.8s ease both;
}

.wordmark {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--white);
  text-decoration: none;
}

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

.header-logo {
  display: block;
  width: auto;
  height: 32px;
  max-width: none;
}

/* ── THEME SWITCHER ── */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-label {
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.theme-dots {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.theme-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.theme-dot:hover { transform: scale(1.3); }

.theme-dot.active {
  transform: scale(1.25);
  box-shadow: 0 0 7px 2px var(--dot-color);
}

.theme-dot[data-t="ember"]     { background: #e8782a; --dot-color: #e8782a; }
.theme-dot[data-t="neon-noir"] { background: #f72585; --dot-color: #f72585; }
.theme-dot[data-t="ice"]       { background: #4fc3f7; --dot-color: #4fc3f7; }
.theme-dot[data-t="acid"]      { background: #39ff14; --dot-color: #39ff14; }

/* ── NAV ── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.3s;
}

.nav-links a:hover { color: var(--white); }
.nav-links a.active { color: var(--accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--white);
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  border-top: 1px solid var(--border);
  background: var(--black);
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  transition: color 0.3s;
}

.mobile-nav a:hover { color: var(--white); }

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  header { padding: 1.5rem; }
}

/* ── PAGE INTRO ── */
.page-intro {
  padding: 2.5rem 3rem 2rem;
  animation: fadeUp 0.8s 0.2s ease both;
}

.page-intro .back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 1.25rem;
  transition: color 0.3s;
}

.page-intro .back-link:hover { color: var(--accent); }

.page-intro .back-link .arrow {
  display: inline-block;
  transition: transform 0.2s;
}

.page-intro .back-link:hover .arrow { transform: translateX(-3px); }

.page-eyebrow {
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.65rem;
  display: block;
}

.page-descriptor {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--white);
  max-width: 560px;
  letter-spacing: 0.01em;
  opacity: 0.7;
}

/* ── ACCENT DIVIDER ── */
.accent-rule {
  width: 48px;
  height: 1px;
  background: var(--accent-dim);
  margin: 0 3rem 2.5rem;
}

/* ── CAPABILITIES STRIP ── */
.capabilities {
  width: 100%;
  border-top: 1px solid var(--border);
  border-bottom: none;
  display: flex;
  flex-wrap: wrap;
}

.capability-item {
  flex: 1;
  min-width: 160px;
  padding: 1.25rem 2rem;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
  border-right: 1px solid var(--border);
  transition: color 0.3s;
}

.capability-item:last-child { border-right: none; }
.capability-item:hover { color: var(--white); }

/* ── APPROACH SECTION ── */
.approach {
  padding: 3rem 3rem 4rem;
  max-width: 640px;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

.approach .page-eyebrow { margin-bottom: 1rem; }

.approach-body {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--white);
  opacity: 0.7;
  letter-spacing: 0.01em;
}

.approach-body + .approach-body { margin-top: 1.1rem; }

@media (max-width: 640px) {
  .approach { padding: 2.5rem 1.5rem; }
}

/* ── CTA CLOSER ── */
.cta-closer {
  margin: 0 3rem 6rem;
  padding: 3rem;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.cta-closer-text {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.2rem, 2.5vw, 1.75rem);
  font-weight: 500;
  color: var(--white);
  line-height: 1.2;
}

.cta-closer-text em {
  font-style: italic;
  color: var(--accent);
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--accent);
  border: none;
  padding: 1rem 1.75rem;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s, transform 0.15s;
}

.btn-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

@media (max-width: 640px) {
  .cta-closer {
    flex-direction: column;
    align-items: flex-start;
    margin: 0 1.5rem 4rem;
    padding: 2rem;
  }
}

/* ── FOOTER ── */
footer {
  padding: 2rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
}

.footer-note {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
}

.footer-email {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-email:hover { color: var(--accent); }

@media (max-width: 640px) {
  footer { padding: 1.5rem; flex-direction: column; gap: 1rem; text-align: center; }
}

/* ── ANIMATIONS ── */
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}