/* ============================================
   ASCENT STUDIO — centered 3D mountain
   ============================================ */

:root {
  --bg: #f4f1ea;             /* warm cream */
  --ink: #12121a;            /* darker near-black for body text (was #1a1a22) */
  --dim: #4f5262;            /* darker muted grey — 7:1 on cream (was #6d6f7c) */
  --accent: #c41f52;         /* deeper rose — passes 4.5:1 on cream */
  --accent-2: #2f6d96;       /* deeper cool blue — readable on cream */
  --rule: rgba(18,18,26,0.22);
  --serif: 'Cormorant Garamond', 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  /* Subtle lift shadows for text sitting over the 3D canvas */
  --text-glow-light: 0 1px 18px rgba(244,241,234,0.55);
  --text-glow-dark:  0 1px 2px rgba(255,255,255,0.6);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--ink); font-family: var(--sans); overflow-x: hidden; }
body { cursor: default; }

/* ---------- noise, grain ---------- */
.noise, .grain { display: none; }
@keyframes grainShift {
  0%,100% { transform: translate(0,0); }
  20% { transform: translate(-5%,3%); }
  40% { transform: translate(4%,-4%); }
  60% { transform: translate(-3%,2%); }
  80% { transform: translate(2%,-2%); }
}

/* ---------- canvases ---------- */
#sky, #snow {
  position: fixed; inset: 0; width: 100vw; height: 100vh;
  z-index: -2; pointer-events: none;
}
#snow { z-index: -1; }

/* ---------- stage: fixed, centered 3D mountain (three.js) ---------- */
.stage {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
}
#mountain3d {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  display: block;
}

/* Ground fog — thick opaque cream band that fully hides the cone base,
   fading upward through dense haze to clear sky. */
.ground-fog {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 75vh;
  /* The top edge thins with scroll (--fog-top-alpha → 0),
     but the bottom band stays thick so the cone base never floats. */
  background:
    linear-gradient(
      to top,
      rgba(244,241,234,var(--fog-base-alpha, 1))                          0%,
      rgba(244,241,234,calc(var(--fog-base-alpha, 1)))                    calc(35% - var(--fog-shrink, 0%)),
      rgba(244,241,234,calc(0.95 * var(--fog-base-alpha, 1)))             calc(55% - var(--fog-shrink, 0%) * 0.8),
      rgba(244,241,234,calc(0.7  * var(--fog-top-alpha, 1))) 75%,
      rgba(244,241,234,calc(0.35 * var(--fog-top-alpha, 1))) 88%,
      rgba(244,241,234,calc(0.12 * var(--fog-top-alpha, 1))) 95%,
      rgba(244,241,234,0)                          100%
    );
  pointer-events: none;
  z-index: 1;
}

/* Topographic contour rings — decorative base dressing */
.contours {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  width: 100%;
  height: 48vh;
  pointer-events: none;
  z-index: 2;
  opacity: 0.9;
}

/* ---------- Season switcher button ---------- */
.season-btn {
  position: fixed; bottom: 5vh; left: 4vw;
  display: inline-flex; align-items: center; gap: 12px;
  padding: 12px 18px;
  background: rgba(244,241,234,0.35);
  backdrop-filter: blur(8px);
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  pointer-events: auto;
  z-index: 200;
  transition: border-color 0.3s, transform 0.3s, background 0.3s;
  border-radius: 2px;
  text-shadow: 0 0 8px rgba(244,241,234,0.9);
}
.season-btn:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  background: rgba(244,241,234,0.55);
}
.season-icon {
  font-size: 18px;
  line-height: 1;
  color: var(--accent);
  transition: transform 0.6s cubic-bezier(.2,.9,.2,1), color 0.3s;
}
.season-btn:hover .season-icon { transform: rotate(180deg); }
.season-label {
  color: var(--ink);
  font-weight: 500;
  min-width: 60px;
}
.season-sub {
  color: var(--dim);
  font-size: 9px;
  padding-left: 12px;
  border-left: 1px solid var(--rule);
}

/* ---------- Summit overlay ---------- */
.summit-overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none; z-index: 8;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.summit-overlay.active { opacity: 1; }
.summit-stamp {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 28px 48px;
  border: 1px solid rgba(245,247,255,0.35);
  background: rgba(245,247,255,0.04);
  backdrop-filter: blur(12px);
  color: var(--ink);
  font-family: var(--mono);
  transform: translateY(20px) scale(0.95);
  transition: transform 1.2s cubic-bezier(.2,.9,.2,1);
}
.summit-overlay.active .summit-stamp { transform: translateY(0) scale(1); }
.summit-tag {
  font-size: 10px; letter-spacing: 0.4em; color: var(--accent);
}
.summit-alt {
  font-family: var(--serif); font-size: clamp(3rem, 7vw, 5rem);
  font-weight: 500; letter-spacing: -0.02em; line-height: 1;
}
.summit-alt #summit-alt { color: var(--ink); }
.summit-season {
  font-size: 11px; letter-spacing: 0.3em; color: var(--dim);
}

/* HUD */
.hud {
  position: fixed; bottom: 5vh; right: 4vw;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--ink); text-align: right; pointer-events: none;
  display: flex; flex-direction: column; gap: 6px;
  border-right: 1px solid var(--rule); padding-right: 14px;
  z-index: 50;
  text-shadow: 0 0 12px rgba(244,241,234,0.8);
}
.hud-line { display: flex; justify-content: flex-end; gap: 8px; align-items: baseline; }
.hud-label { color: var(--ink); opacity: 0.6; }
.hud-unit { font-size: 9px; opacity: 0.5; }
#alt-value, #prg-value {
  color: var(--accent); font-weight: 500; font-variant-numeric: tabular-nums;
  min-width: 40px; display: inline-block;
}
.hud-bar {
  width: 120px; height: 2px; background: rgba(245,247,255,0.08);
  margin-left: auto; overflow: hidden; position: relative;
}
#hud-fill {
  position: absolute; left: 0; top: 0; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
}

/* ---------- sections ---------- */
main { position: relative; z-index: 2; pointer-events: none; }
main > * { pointer-events: auto; }
.sec {
  min-height: 100vh; width: 100%;
  padding: 12vh 6vw; position: relative;
  display: flex; flex-direction: column; justify-content: center;
}

.mono {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em;
  color: var(--ink); text-transform: uppercase;
  text-shadow: 0 0 12px rgba(244,241,234,0.7);
}
.sec-num {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.25em; color: var(--accent-2);
  margin-bottom: 6vh; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 10px;
}
.sec-num::before { content: ''; width: 24px; height: 1px; background: var(--accent-2); }

/* ---------- HERO ---------- */
.sec-hero {
  min-height: 100vh;
  padding: 4vh 6vw;
  justify-content: space-between;
}
.hero-grid { display: flex; flex-direction: column; height: 92vh; justify-content: space-between; }
.hero-top, .hero-bottom { display: flex; justify-content: space-between; align-items: center; }
.blink { color: var(--accent); }
.blink::before {
  content: '●'; color: var(--accent); margin-right: 6px;
  animation: blink 1.4s infinite;
}
@keyframes blink { 0%,60%{opacity:1} 61%,100%{opacity:0.15} }

.hero-title {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(1.8rem, 4.5vw, 5rem);
  line-height: 0.95; letter-spacing: -0.02em;
  align-self: flex-start;
  max-width: 28vw;
  color: var(--ink);
  /* Subtle cream glow lifts text off whatever's behind in the 3D canvas */
  text-shadow:
    0 0 22px rgba(244,241,234,0.7),
    0 1px 2px rgba(244,241,234,0.9);
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line > span { display: inline-block; will-change: transform; }
.hero-title em { font-style: italic; color: var(--accent); }
.hero-title .outlined > span {
  color: transparent;
  -webkit-text-stroke: 1.6px var(--ink);
  font-style: italic;
}

/* ---------- ABOUT ---------- */
.sec-about { max-width: 1100px; }
.reveal-text {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.6rem, 3.6vw, 3.2rem); line-height: 1.2; letter-spacing: -0.01em;
  margin-bottom: 5vh;
}
.reveal-text em { color: var(--accent); font-style: italic; }
.body-text {
  font-size: 1rem; line-height: 1.7; color: var(--dim); max-width: 60ch;
}

/* ---------- SERVICES — 3D cards ---------- */
.sec-services { perspective: 1400px; }
.cards {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 2rem; transform-style: preserve-3d;
}
.card {
  position: relative; padding: 3rem 2rem 2rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid var(--rule); border-radius: 2px;
  backdrop-filter: blur(6px);
  transform-style: preserve-3d; transition: transform 0.4s cubic-bezier(.2,.9,.2,1), border-color 0.4s;
  will-change: transform;
  overflow: hidden;
}
.card::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(110,231,255,0.12), transparent 45%);
  opacity: 0; transition: opacity 0.4s;
}
.card:hover { border-color: rgba(245,247,255,0.3); }
.card:hover::before { opacity: 1; }
.card-num {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; color: var(--accent);
  margin-bottom: 2rem;
}
.card h3 { font-family: var(--serif); font-size: 1.8rem; font-weight: 500; margin-bottom: 1rem; letter-spacing: -0.01em; }
.card p { color: var(--dim); font-size: 0.95rem; line-height: 1.6; margin-bottom: 2rem; }
.card-tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; color: var(--ink); opacity: 0.6; }

/* ---------- PROCESS ---------- */
.process-list { display: flex; flex-direction: column; gap: 0; }
.step {
  display: grid; grid-template-columns: 80px 1fr 2fr;
  align-items: center; gap: 3rem;
  padding: 2.4rem 0; border-top: 1px solid var(--rule);
  position: relative; will-change: transform;
}
.step:last-child { border-bottom: 1px solid var(--rule); }
.step::after {
  content: ''; position: absolute; left: 0; top: 0; height: 100%; width: 0%;
  background: linear-gradient(90deg, rgba(255,59,107,0.08), transparent);
  transition: width 0.6s cubic-bezier(.2,.9,.2,1); pointer-events: none;
}
.step:hover::after { width: 100%; }
.step-n { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; color: var(--accent-2); }
.step h4 { font-family: var(--serif); font-size: clamp(1.4rem, 2.2vw, 2.2rem); font-weight: 500; letter-spacing: -0.01em; }
.step p { color: var(--dim); font-size: 1rem; line-height: 1.6; }

/* ---------- SUMMIT ---------- */
.sec-summit { align-items: flex-start; justify-content: center; }
.summit-title {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(3rem, 9vw, 9rem); line-height: 0.95; letter-spacing: -0.02em;
  margin-bottom: 6vh;
}
.summit-title span { display: block; }
.summit-title .outlined {
  color: transparent; -webkit-text-stroke: 1.4px var(--ink); font-style: italic;
}
.cta {
  display: inline-flex; align-items: center; gap: 2rem;
  font-family: var(--serif); font-size: clamp(1.4rem, 2.5vw, 2.4rem); font-style: italic;
  color: var(--ink); text-decoration: none;
  padding: 1.2rem 0; border-bottom: 1px solid var(--rule);
  position: relative; transition: letter-spacing 0.5s, color 0.4s;
  max-width: 500px;
}
.cta::before {
  content: ''; position: absolute; left: 0; bottom: -1px; height: 1px; width: 0%;
  background: var(--accent); transition: width 0.6s cubic-bezier(.2,.9,.2,1);
}
.cta:hover { letter-spacing: 0.02em; color: var(--accent); }
.cta:hover::before { width: 100%; }
.cta-arrow { margin-left: auto; transition: transform 0.4s; font-style: normal; }
.cta:hover .cta-arrow { transform: translate(6px, -6px) rotate(8deg); color: var(--accent); }

.footer {
  position: absolute; bottom: 4vh; left: 6vw; right: 6vw;
  display: flex; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
}
.credit-link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.3s, border-color 0.3s;
}
.credit-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- responsive ---------- */
@media (max-width: 800px) {
  .cards { grid-template-columns: 1fr; }
  .step { grid-template-columns: 50px 1fr; gap: 1rem; }
  .step p { grid-column: 1 / -1; margin-top: 0.5rem; }
  .hud { font-size: 9px; }
  .sec { padding: 10vh 5vw; }
  .hero-title { max-width: 100%; }
}