/* Dark, minimal, futuristic */
:root {
  --bg: #0b0f14;
  --fg: #e9f1ff;
  --accent: #6ee7ff;
  --pitch: #ffffff;
  --muted: #9bb0c3;
  /* transition vars controlled by JS during scroll */
  --app-blur: 0px;
  --app-opacity: 1;
  --bio-opacity: 0;
  --bio-translate: 24px;
}

html, body { height: 100%; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Orbitron', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
}

#app {
  position: relative;
  height: 100vh;
  overflow: hidden;
  touch-action: manipulation;
  filter: none;
  opacity: 1;
  transition: none;
  will-change: auto;
  background: #06090d; /* match canvas edge color to avoid visible strip */
  padding-bottom: 300px; /* extend extra space below backdrop so you scroll longer before white */
}

#canvas {
  position: absolute;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
}

/* Citation near the bottom of the pitch backdrop */
#citation {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(env(safe-area-inset-bottom, 24px) + 64px); /* leave comfy margin above extra black scroll space */
  max-width: min(760px, 88vw);
  font-size: clamp(12px, 1.9vw, 15px); /* slightly larger for readability */
  line-height: 1.5;
  color: var(--muted);
  text-align: center;
  opacity: 0; /* hidden by default; revealed on scroll */
  text-shadow: 0 0 6px rgba(110,231,255,0.25);
  pointer-events: none;
  transition: opacity 0.45s ease;
}

/* Nudge the citation lower on phones so lines don't overlap it */
@media (max-width: 720px) {
  #citation {
    bottom: calc(env(safe-area-inset-bottom, 20px) + 48px); /* margin above bottom on phones too; accounts for safe areas */
  }
}
#citation.show { opacity: 0.85; }

#prompt {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(16px, 3.5vw, 42px);
  letter-spacing: 0.08em;
  color: var(--fg);
  text-shadow: 0 0 12px rgba(110,231,255,0.45), 0 0 22px rgba(110,231,255,0.25);
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
}

/* Caret for typewriter */
#prompt.typing .caret {
  display: inline-block;
  width: 0.08em;
  height: 1em;
  background: var(--fg);
  margin-left: 0.12em;
  vertical-align: -0.05em;
  animation: caretBlink 1s steps(2, jump-none) infinite;
  box-shadow: 0 0 8px rgba(110,231,255,0.6);
}

@keyframes caretBlink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* Gentle brightness pulse after typing finishes */
#prompt.soft-pulse { animation: softPulse 2.8s ease-in-out infinite; }
@keyframes softPulse {
  0% { opacity: 0.65; filter: brightness(0.85); }
  50% { opacity: 1; filter: brightness(1.05); }
  100% { opacity: 0.65; filter: brightness(0.85); }
}

/* Scroll cue */
#scroll-cue {
  position: absolute;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 16px) + 10px);
  transform: translateX(-50%) translateY(12px) scale(0.98);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  color: var(--fg);
  pointer-events: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
}
#scroll-cue .arrow {
  width: 8px;
  height: 24px;
  position: relative;
}
#scroll-cue .arrow::before,
#scroll-cue .arrow::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: var(--fg);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(110,231,255,0.5);
}
#scroll-cue .arrow::before {
  top: 0;
  width: 2px;
  height: 14px;
}
#scroll-cue .arrow::after {
  bottom: 0;
  width: 8px;
  height: 8px;
  clip-path: polygon(50% 100%, 0 0, 100% 0);
}
#scroll-cue .label {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.85;
}
#scroll-cue.show {
  opacity: 0.9;
  transform: translateX(-50%) translateY(0) scale(1);
}

/* Bright bio section */
#bio {
  position: relative;
  background: #f7fafc;
  color: #0a0f14;
  min-height: 120vh;
  padding: 14vh 7vw 18vh;
  box-sizing: border-box;
  opacity: 1;
  transform: none;
  transition: background-color 0.3s ease;
  pointer-events: auto;
}
#bio .bio-inner { max-width: 1100px; margin: 0 auto; }
#bio h1 { font-size: clamp(28px, 6vw, 56px); margin: 0 0 12px; letter-spacing: 0.02em; }
#bio .subtitle { margin: 0 0 28px; color: #334155; opacity: 0.8; font-size: clamp(14px, 2.6vw, 18px); }
#bio .bio-grid { display: grid; grid-template-columns: 140px 1fr; gap: 24px; align-items: start; }
#bio .avatar { width: 140px; height: 140px; border-radius: 12px; background: linear-gradient(135deg, #cce7ff, #e8f0ff); box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
#bio .copy { font-size: clamp(14px, 2.4vw, 18px); line-height: 1.6; color: #0f172a; }
#bio .link { color: #0ea5e9; text-decoration: none; border-bottom: 1px dashed rgba(14,165,233,0.5); }
#bio .link:hover { border-bottom-style: solid; }

@media (max-width: 720px) {
  #bio .bio-grid { grid-template-columns: 1fr; }
  #bio .avatar { width: 96px; height: 96px; }
}

/* Small helper text style (if needed later) */
.hint {
  position: absolute;
  bottom: env(safe-area-inset-bottom, 16px);
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  color: var(--muted);
  opacity: 0.7;
}

/* Dark, minimal, futuristic */
:root {
  --bg: #0b0f14;
  --fg: #e9f1ff;
  --accent: #6ee7ff;
  --pitch: #ffffff;
  --muted: #9bb0c3;
  /* transition vars controlled by JS during scroll */
  --app-blur: 0px;
  --app-opacity: 1;
  --bio-opacity: 0;
  --bio-translate: 24px;
}

html, body { height: 100%; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Orbitron', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
}

#app {
  position: relative;
  height: 100vh;
  overflow: hidden;
  touch-action: manipulation;
  filter: none;
  opacity: 1;
  transition: none;
  will-change: auto;
  background: #06090d; /* match canvas edge color to avoid visible strip */
  padding-bottom: 300px; /* extend extra space below backdrop so you scroll longer before white */
}

#canvas {
  position: absolute;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
}

/* Citation near the bottom of the pitch backdrop */
#citation {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(env(safe-area-inset-bottom, 24px) + 64px); /* leave comfy margin above extra black scroll space */
  max-width: min(760px, 88vw);
  font-size: clamp(12px, 1.9vw, 15px); /* slightly larger for readability */
  line-height: 1.5;
  color: var(--muted);
  text-align: center;
  opacity: 0; /* hidden by default; revealed on scroll */
  text-shadow: 0 0 6px rgba(110,231,255,0.25);
  pointer-events: none;
  transition: opacity 0.45s ease;
}

/* Nudge the citation lower on phones so lines don't overlap it */
@media (max-width: 720px) {
  #citation {
    bottom: calc(env(safe-area-inset-bottom, 20px) + 48px); /* margin above bottom on phones too; accounts for safe areas */
  }
}
#citation.show { opacity: 0.85; }

#prompt {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(16px, 3.5vw, 42px);
  letter-spacing: 0.08em;
  color: var(--fg);
  text-shadow: 0 0 12px rgba(110,231,255,0.45), 0 0 22px rgba(110,231,255,0.25);
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
}

/* Caret for typewriter */
#prompt.typing .caret {
  display: inline-block;
  width: 0.08em;
  height: 1em;
  background: var(--fg);
  margin-left: 0.12em;
  vertical-align: -0.05em;
  animation: caretBlink 1s steps(2, jump-none) infinite;
  box-shadow: 0 0 8px rgba(110,231,255,0.6);
}

@keyframes caretBlink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* Gentle brightness pulse after typing finishes */
#prompt.soft-pulse { animation: softPulse 2.8s ease-in-out infinite; }
@keyframes softPulse {
  0% { opacity: 0.65; filter: brightness(0.85); }
  50% { opacity: 1; filter: brightness(1.05); }
  100% { opacity: 0.65; filter: brightness(0.85); }
}

/* Scroll cue */
#scroll-cue {
  position: absolute;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 16px) + 10px);
  transform: translateX(-50%) translateY(12px) scale(0.98);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  color: var(--fg);
  pointer-events: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
}
#scroll-cue .arrow {
  width: 8px;
  height: 24px;
  position: relative;
}
#scroll-cue .arrow::before,
#scroll-cue .arrow::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: var(--fg);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(110,231,255,0.5);
}
#scroll-cue .arrow::before {
  top: 0;
  width: 2px;
  height: 14px;
}
#scroll-cue .arrow::after {
  bottom: 0;
  width: 8px;
  height: 8px;
  clip-path: polygon(50% 100%, 0 0, 100% 0);
}
#scroll-cue .label {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.85;
}
#scroll-cue.show {
  opacity: 0.9;
  transform: translateX(-50%) translateY(0) scale(1);
}

/* Bright bio section */
#bio {
  position: relative;
  background: #f7fafc;
  color: #0a0f14;
  min-height: 120vh;
  padding: 14vh 7vw 18vh;
  box-sizing: border-box;
  opacity: 1;
  transform: none;
  transition: background-color 0.3s ease;
  pointer-events: auto;
}
#bio .bio-inner { max-width: 1100px; margin: 0 auto; }
#bio h1 { font-size: clamp(28px, 6vw, 56px); margin: 0 0 12px; letter-spacing: 0.02em; }
#bio .subtitle { margin: 0 0 28px; color: #334155; opacity: 0.8; font-size: clamp(14px, 2.6vw, 18px); }
#bio .bio-grid { display: grid; grid-template-columns: 140px 1fr; gap: 24px; align-items: start; }
#bio .avatar { width: 140px; height: 140px; border-radius: 12px; background: linear-gradient(135deg, #cce7ff, #e8f0ff); box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
#bio .copy { font-size: clamp(14px, 2.4vw, 18px); line-height: 1.6; color: #0f172a; }
#bio .link { color: #0ea5e9; text-decoration: none; border-bottom: 1px dashed rgba(14,165,233,0.5); }
#bio .link:hover { border-bottom-style: solid; }

@media (max-width: 720px) {
  #bio .bio-grid { grid-template-columns: 1fr; }
  #bio .avatar { width: 96px; height: 96px; }
}

/* Projects section */
#projects {
  position: relative;
  background: #ffffff;
  color: #0a0f14;
  padding: 10vh 7vw 16vh;
}
#projects .projects-inner { max-width: 1100px; margin: 0 auto; }
#projects h2 { font-size: clamp(22px, 5vw, 40px); margin: 0 0 24px; letter-spacing: 0.02em; }
#projects .projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.project-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  align-items: center;
  background: #f8fafc;
  padding: 16px;
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 10px 30px rgba(2, 8, 23, 0.06), inset 0 0 0 1px rgba(2,8,23,0.06);
  transition: transform 0.2s ease, box-shadow 0.25s ease;
}
.project-card:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(2,8,23,0.09), inset 0 0 0 1px rgba(2,8,23,0.08); }
.project-thumb { width: 120px; height: 120px; border-radius: 10px; background: linear-gradient(135deg, #dbeafe, #e2e8f0); box-shadow: inset 0 0 32px rgba(0,0,0,0.06); }
.project-thumb.mnist { background: conic-gradient(from 45deg, #111827, #1f2937, #0f172a, #111827); position: relative; }
.project-thumb.mnist::after {
  content: '0 1 2 3 4 5 6 7 8 9';
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: #93c5fd; font-size: 12px; letter-spacing: 0.2em; opacity: 0.8;
}
.project-content { min-width: 0; }
.project-title { margin: 0 0 6px; font-size: clamp(16px, 3.2vw, 22px); }
.project-meta { margin: 0 0 8px; font-size: 12px; color: #475569; text-transform: uppercase; letter-spacing: 0.12em; }
.project-desc { margin: 0; color: #0f172a; font-size: clamp(13px, 2.6vw, 16px); line-height: 1.5; }

@media (max-width: 640px) {
  .project-card { grid-template-columns: 1fr; }
  .project-thumb { width: 100%; height: 160px; }
}

/* Small helper text style (if needed later) */
.hint {
  position: absolute;
  bottom: env(safe-area-inset-bottom, 16px);
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  color: var(--muted);
  opacity: 0.7;
}


/* Overrides for prompt position and scroll-cue placement */
@media (orientation: portrait) {
  #scroll-cue {
    top: 75vh; /* about 3/4 down the screen on phones */
    bottom: auto;
    transform: translateX(-50%) translateY(8px) scale(0.98);
  }
  #scroll-cue.show {
    transform: translateX(-50%) translateY(0) scale(1);
  }
}

/* Nudge start prompt slightly higher globally */
#prompt { top: 46%; }


/* Overrides appended to address landscape scroll-cue visibility and shorten bio height */
#scroll-cue { z-index: 5; }
#bio { min-height: 70vh; padding-bottom: 12vh; }


/* Landscape-specific scroll cue positioned via JS under the penalty arc */
#scroll-cue-land {
  position: absolute;
  left: 50%; /* overridden by JS */
  top: 70%;  /* overridden by JS */
  transform: translate(-50%, 0) scale(0.98);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  color: var(--fg);
  pointer-events: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
  z-index: 6;
}
#scroll-cue-land .arrow { width: 8px; height: 24px; position: relative; }
#scroll-cue-land .arrow::before,
#scroll-cue-land .arrow::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: var(--fg);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(110,231,255,0.5);
}
#scroll-cue-land .arrow::before { top: 0; width: 2px; height: 14px; }
#scroll-cue-land .arrow::after { bottom: 0; width: 8px; height: 8px; clip-path: polygon(50% 100%, 0 0, 100% 0); }
#scroll-cue-land .label { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; opacity: 0.85; }
#scroll-cue-land.show { opacity: 0.9; transform: translate(-50%, 0) scale(1); }

/* Ensure portrait cue is used only in portrait; landscape cue only in landscape */
@media (orientation: portrait) {
  #scroll-cue-land { display: none; }
}
@media (orientation: landscape) {
  #scroll-cue { display: none; }
}


/* Layering and scroll-hint stability overrides */
#canvas { z-index: 10; }
#scroll-cue, #scroll-cue-land {
  will-change: transform, opacity;
  transform: translateZ(0);
  backface-visibility: hidden;
  z-index: 12; /* above canvas so hints are visible; pointer-events remain none */
}


/* Ensure start prompt appears above the canvas */
#prompt { z-index: 20; }


/* Avatar image fit and Uhillian project thumb logo */
#bio .avatar {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.project-thumb.uhillian {
  background-image: url('imgs/uhillianLogo.png');
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #ffffff; /* keep card light behind logo */
}