/* ── Google Fonts ──────────────────────────────────────────────────── */

/* ── CSS Custom Properties ──────────────────────────────────────────── */
:root {
  --bg-0:         #050E1B;
  --bg-1:         #091628;
  --bg-2:         #0D1E35;
  --bg-card:      rgba(9, 22, 41, 0.62);
  --bg-card-h:    rgba(13, 30, 55, 0.82);

  --blue-deep:    #023E6B;
  --blue-mid:     #0077B6;
  --blue-accent:  #00B4D8;
  --teal:         #06D6A0;
  --gold:         #E9C46A;
  --gold-dim:     rgba(233, 196, 106, 0.55);

  --text-1:       #CAF0F8;
  --text-2:       #8BBECE;
  --text-3:       #4E7A8A;
  --text-4:       #2A4A58;

  --border:       rgba(0, 180, 216, 0.11);
  --border-h:     rgba(0, 180, 216, 0.32);
  --shadow-sm:    0 4px 16px rgba(0,0,0,0.32);
  --shadow-md:    0 8px 32px rgba(0,0,0,0.45);
  --shadow-lg:    0 20px 60px rgba(0,0,0,0.6);

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-mono:    'Space Mono', 'Courier New', monospace;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;

  --nav-h:        68px;
  --r-sm:         6px;
  --r:            12px;
  --r-lg:         20px;
  --ease:         cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg-0);
  color: var(--text-1);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.38s var(--ease), transform 0.38s var(--ease);
}
body.page-loaded  { opacity: 1; transform: translateY(0); }
body.page-leaving { opacity: 0; transform: translateY(-8px); }

::-webkit-scrollbar       { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb { background: var(--blue-accent); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--teal); }

/* ── Canvas ─────────────────────────────────────────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ── Navigation ─────────────────────────────────────────────────────── */
#main-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 2.5rem;
  gap: 1.5rem;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.3s var(--ease);
}
#main-nav.nav-scrolled {
  background: rgba(5, 14, 27, 0.93);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
}
#main-nav.nav-hidden { transform: translateY(-100%); }

.nav-logo {
  display: flex; align-items: center; gap: 0.65rem;
  text-decoration: none; flex-shrink: 0;
}
.nav-monogram {
  width: 36px; height: 36px;
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 0.85rem; font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.5px;
  transition: background 0.2s, color 0.2s;
}
.nav-logo:hover .nav-monogram { background: var(--gold); color: var(--bg-0); }

.nav-name {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-2);
}

#nav-coords {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-3);
  letter-spacing: 1px;
  margin-right: auto;
}

#nav-menu { display: flex; align-items: center; gap: 0.2rem; list-style: none; }

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-3);
  padding: 0.4rem 0.9rem;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.nav-link:hover { color: var(--blue-accent); border-color: var(--border); background: rgba(0,180,216,0.05); }
.nav-link.active { color: var(--gold); border-color: var(--gold-dim); background: rgba(233,196,106,0.07); }
.nav-link.auth-only { display: none; }

#nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
#nav-hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--text-2); border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
#nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#nav-hamburger.open span:nth-child(2) { opacity: 0; }
#nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Utilities ───────────────────────────────────────────────────────── */
.container { max-width: 1140px; margin: 0 auto; padding: 0 2rem; }
.section   { position: relative; z-index: 1; padding: 100px 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem; letter-spacing: 3px; text-transform: uppercase;
  color: var(--blue-accent); margin-bottom: 0.65rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 300;
  color: var(--text-1); line-height: 1.15; margin-bottom: 1.1rem;
}
.section-title em { font-style: italic; color: var(--gold); }
.section-subtitle { font-size: 1rem; color: var(--text-2); max-width: 560px; line-height: 1.72; }

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.72rem 1.65rem;
  border-radius: var(--r-sm);
  font-family: var(--font-mono); font-size: 0.75rem;
  letter-spacing: 1.5px; text-transform: uppercase;
  text-decoration: none; cursor: pointer; border: none;
  transition: all 0.25s var(--ease); white-space: nowrap;
}
.btn-primary { background: var(--blue-accent); color: var(--bg-0); font-weight: 700; }
.btn-primary:hover { background: var(--teal); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,180,216,0.35); }
.btn-outline { background: transparent; color: var(--text-1); border: 1px solid var(--border-h); }
.btn-outline:hover { border-color: var(--blue-accent); color: var(--blue-accent); background: rgba(0,180,216,0.07); transform: translateY(-2px); }
.btn-gold { background: transparent; color: var(--gold); border: 1px solid var(--gold-dim); }
.btn-gold:hover { background: var(--gold); color: var(--bg-0); box-shadow: 0 8px 24px rgba(233,196,106,0.3); transform: translateY(-2px); }
.btn-sm { padding: 0.48rem 1.1rem; font-size: 0.67rem; }

/* ── Glass cards ─────────────────────────────────────────────────────── */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s var(--ease);
}
.glass-card:hover { border-color: var(--border-h); box-shadow: var(--shadow-md); }

/* ── Tags ────────────────────────────────────────────────────────────── */
.tag {
  display: inline-block; padding: 0.18rem 0.6rem;
  border-radius: 4px;
  font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.5px;
  background: rgba(0,180,216,0.1); border: 1px solid rgba(0,180,216,0.2); color: var(--blue-accent);
}
.tag-gold { background: rgba(233,196,106,0.1); border-color: rgba(233,196,106,0.22); color: var(--gold); }
.tag-teal { background: rgba(6,214,160,0.1);   border-color: rgba(6,214,160,0.22);   color: var(--teal); }

/* ── Scroll-reveal ───────────────────────────────────────────────────── */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.72s var(--ease), transform 0.72s var(--ease);
}
.reveal.revealed { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }
.reveal-d4 { transition-delay: 0.4s; }

/* ── Page header (inner pages) ───────────────────────────────────────── */
.page-header {
  position: relative; z-index: 1;
  padding: calc(var(--nav-h) + 80px) 0 72px;
  text-align: center;
}
.page-header .section-label { text-align: center; }

/* ════════════════════════════════════════════════════════════════════════
   HOME PAGE
   ════════════════════════════════════════════════════════════════════════ */

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden; z-index: 1;
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center; gap: 3rem;
  width: 100%; max-width: 1140px; margin: 0 auto;
  padding: calc(var(--nav-h) + 40px) 2rem 60px;
}
.hero-label {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--blue-accent); margin-bottom: 1rem;
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3.8rem, 8vw, 7rem);
  font-weight: 300; line-height: 0.92;
  color: var(--text-1); margin-bottom: 1.5rem;
}
.hero-name span { display: block; font-style: italic; color: var(--gold); }
.hero-role {
  font-family: var(--font-mono); font-size: 0.95rem;
  color: var(--blue-accent); margin-bottom: 1.5rem; min-height: 1.5rem;
}
.hero-role-prefix { color: var(--text-3); margin-right: 0.4rem; }
#typed-role::after {
  content: '|';
  animation: blink 1s step-end infinite;
  margin-left: 2px; color: var(--gold);
}
@keyframes blink { 0%,100%{opacity:1}50%{opacity:0} }

.hero-bio {
  font-size: 1rem; color: var(--text-2); line-height: 1.78;
  max-width: 430px; margin-bottom: 2.5rem;
}
.hero-cta { display: flex; gap: 0.85rem; flex-wrap: wrap; }
.hero-meta { margin-top: 2.75rem; display: flex; gap: 2.5rem; }
.hero-stat { display: flex; flex-direction: column; gap: 0.15rem; }
.hero-stat-value {
  font-family: var(--font-display); font-size: 2rem; font-weight: 300;
  color: var(--text-1); line-height: 1;
}
.hero-stat-value span { color: var(--gold); font-size: 1.2rem; }
.hero-stat-label {
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-3);
}

/* Hero image */
.hero-image-wrap { position: relative; height: 620px; }
.hero-image-container {
  position: absolute; inset: 0;
  clip-path: polygon(14% 0%, 100% 0%, 100% 100%, 0% 100%);
  overflow: hidden;
  border-radius: 0 var(--r-lg) var(--r-lg) 0;
}
.hero-image-container img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 20%;
  filter: saturate(0.65) brightness(0.58);
  transition: filter 0.6s var(--ease);
}
.hero-image-container:hover img { filter: saturate(0.85) brightness(0.72); }
.hero-image-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    135deg,
    rgba(5,14,27,0.97) 0%,
    rgba(5,14,27,0.45) 38%,
    rgba(0,77,120,0.18) 100%
  );
}
.hero-image-badge {
  position: absolute; bottom: 2rem; right: 2rem;
  padding: 0.7rem 1.2rem;
  background: rgba(5,14,27,0.88); backdrop-filter: blur(8px);
  border: 1px solid var(--border); border-radius: var(--r-sm);
  font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--text-2);
}
.hero-image-badge em { display: block; color: var(--gold); font-style: normal; font-size: 0.78rem; margin-bottom: 0.12rem; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute; bottom: 2.5rem; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  color: var(--text-3); font-family: var(--font-mono);
  font-size: 0.62rem; letter-spacing: 2px; text-transform: uppercase;
  animation: scrollBob 2.2s ease-in-out infinite;
}
.scroll-indicator-line {
  width: 1px; height: 38px;
  background: linear-gradient(to bottom, var(--blue-accent), transparent);
}
@keyframes scrollBob { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(7px)} }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.about-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.highlight-card { padding: 1.5rem; border-left: 2px solid var(--blue-accent); }
.highlight-card.gold { border-left-color: var(--gold); }
.highlight-card h3 { font-family: var(--font-display); font-size: 1.1rem; color: var(--text-1); margin-bottom: 0.35rem; }
.highlight-card p  { font-size: 0.87rem; color: var(--text-2); line-height: 1.62; }

/* Interests marquee */
.interests-strip {
  position: relative; z-index: 1;
  background: var(--bg-1); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 1.5rem 0; overflow: hidden;
}
.interests-inner {
  display: flex; gap: 2.5rem; align-items: center;
  font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 2px; text-transform: uppercase; color: var(--text-3);
  white-space: nowrap; width: max-content;
  animation: marquee 28s linear infinite;
}
.interests-inner span { color: var(--gold); margin-right: 0.5rem; }
@keyframes marquee { from{transform:translateX(0)} to{transform:translateX(-50%)} }

/* ════════════════════════════════════════════════════════════════════════
   EXPERIENCE PAGE
   ════════════════════════════════════════════════════════════════════════ */

.timeline { position: relative; padding: 2rem 0; }
.timeline::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px;
  background: linear-gradient(to bottom, transparent, var(--blue-accent) 10%, var(--blue-accent) 90%, transparent);
  transform: translateX(-50%);
}
.timeline-item {
  display: grid; grid-template-columns: 1fr 56px 1fr;
  margin-bottom: 2.5rem; align-items: start;
}
.timeline-item:nth-child(odd)  .timeline-card  { grid-column: 1; }
.timeline-item:nth-child(odd)  .timeline-dot   { grid-column: 2; }
.timeline-item:nth-child(odd)  .timeline-empty { grid-column: 3; }
.timeline-item:nth-child(even) .timeline-card  { grid-column: 3; grid-row: 1; }
.timeline-item:nth-child(even) .timeline-dot   { grid-column: 2; grid-row: 1; }
.timeline-item:nth-child(even) .timeline-empty { grid-column: 1; }

.timeline-dot { display: flex; justify-content: center; padding-top: 1.6rem; }
.timeline-dot-inner {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--blue-accent); border: 2px solid var(--bg-0);
  box-shadow: 0 0 0 3px rgba(0,180,216,0.28);
  flex-shrink: 0;
}
.timeline-card { padding: 1.65rem; margin: 0 1.25rem; }
.timeline-card-header { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 0.9rem; }
.company-icon {
  width: 42px; height: 42px; border-radius: var(--r-sm); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 600; font-size: 0.85rem;
  background: rgba(0,180,216,0.14); color: var(--blue-accent); border: 1px solid rgba(0,180,216,0.2);
}
.company-icon.gold { background: rgba(233,196,106,0.14); color: var(--gold); border-color: rgba(233,196,106,0.2); }
.company-icon.teal { background: rgba(6,214,160,0.12); color: var(--teal); border-color: rgba(6,214,160,0.2); }
.tcm { display: flex; flex-direction: column; gap: 0.12rem; }
.tcm h3 { font-family: var(--font-display); font-size: 1.12rem; font-weight: 400; color: var(--text-1); }
.tcm .role { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.5px; color: var(--blue-accent); }
.tcm .dates { font-family: var(--font-mono); font-size: 0.64rem; color: var(--text-3); letter-spacing: 0.4px; margin-top: 0.1rem; }
.timeline-card ul { list-style: none; display: flex; flex-direction: column; gap: 0.55rem; margin-bottom: 0.9rem; }
.timeline-card li { font-size: 0.87rem; color: var(--text-2); line-height: 1.55; padding-left: 1rem; position: relative; }
.timeline-card li::before { content: '—'; position: absolute; left: 0; color: var(--blue-accent); font-size: 0.7rem; top: 0.15rem; }
.tl-tags { display: flex; flex-wrap: wrap; gap: 0.38rem; }

.edu-grid  { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 1.75rem; }
.edu-card  { padding: 1.65rem; }
.edu-card h3   { font-family: var(--font-display); font-size: 1.25rem; color: var(--text-1); margin-bottom: 0.2rem; }
.edu-card .degree { font-size: 0.87rem; color: var(--blue-accent); margin-bottom: 0.45rem; }
.edu-card .dates  { font-family: var(--font-mono); font-size: 0.66rem; color: var(--text-3); margin-bottom: 0.7rem; }
.edu-card p    { font-size: 0.85rem; color: var(--text-2); line-height: 1.62; }

.cert-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-top: 1.75rem; }
.cert-item { padding: 1.25rem; display: flex; gap: 1rem; align-items: flex-start; }
.cert-icon { font-size: 1.4rem; flex-shrink: 0; width: 34px; text-align: center; }
.cert-item h4  { font-size: 0.9rem; color: var(--text-1); margin-bottom: 0.18rem; }
.cert-item p   { font-size: 0.75rem; color: var(--text-3); font-family: var(--font-mono); letter-spacing: 0.3px; }

/* ════════════════════════════════════════════════════════════════════════
   VENTURES PAGE
   ════════════════════════════════════════════════════════════════════════ */

.ventures-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.venture-card {
  padding: 2rem;
  transform-style: preserve-3d;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s var(--ease);
}
.venture-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1.2rem; }
.venture-icon {
  width: 52px; height: 52px; border-radius: var(--r); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
}
.venture-badge {
  font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 1px; text-transform: uppercase;
  padding: 0.22rem 0.6rem; border-radius: 20px;
}
.badge-startup { background: rgba(233,196,106,0.1); color: var(--gold);         border: 1px solid rgba(233,196,106,0.25); }
.badge-project { background: rgba(6,214,160,0.1);   color: var(--teal);         border: 1px solid rgba(6,214,160,0.25); }
.badge-research{ background: rgba(0,180,216,0.1);   color: var(--blue-accent);  border: 1px solid rgba(0,180,216,0.25); }
.badge-volunteer{background: rgba(233,196,106,0.08);color: var(--gold-dim);     border: 1px solid rgba(233,196,106,0.18);}

.venture-card h3 { font-family: var(--font-display); font-size: 1.45rem; font-weight: 400; color: var(--text-1); margin-bottom: 0.2rem; }
.venture-url { font-family: var(--font-mono); font-size: 0.68rem; color: var(--blue-accent); text-decoration: none; letter-spacing: 0.5px; display: inline-block; margin-bottom: 0.65rem; }
.venture-url:hover { color: var(--teal); }
.venture-card > p { font-size: 0.89rem; color: var(--text-2); line-height: 1.65; margin-bottom: 1.2rem; }

.venture-metrics { display: flex; gap: 1.5rem; margin-bottom: 1.2rem; padding: 0.85rem 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.vm-value { font-family: var(--font-display); font-size: 1.3rem; color: var(--text-1); line-height: 1; }
.vm-label { font-family: var(--font-mono); font-size: 0.58rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-3); margin-top: 0.12rem; }

.venture-footer { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.vtags { display: flex; flex-wrap: wrap; gap: 0.35rem; }

/* Research spans full width */
.research-card { grid-column: 1 / -1; }
.research-body { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: start; }
.research-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; min-width: 200px; }
.rm-box {
  padding: 1rem; text-align: center; border-radius: var(--r-sm);
  background: rgba(0,180,216,0.05); border: 1px solid var(--border);
}
.rm-val { font-family: var(--font-display); font-size: 1.6rem; color: var(--teal); display: block; margin-bottom: 0.15rem; }
.rm-lbl { font-family: var(--font-mono); font-size: 0.58rem; letter-spacing: 1px; text-transform: uppercase; color: var(--text-3); }

/* ════════════════════════════════════════════════════════════════════════
   APPS PAGE
   ════════════════════════════════════════════════════════════════════════ */

/* App cards (Quizlet, etc.) */
.app-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.25rem; }
.app-card  { padding: 1.75rem; display: flex; flex-direction: column; gap: 0.75rem; }
.app-icon  { font-size: 2rem; }
.app-card h3 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 400; color: var(--text-1); }
.app-card p  { font-size: 0.88rem; color: var(--text-2); line-height: 1.65; flex: 1; }
.app-badge   { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 1px; text-transform: uppercase; padding: 0.2rem 0.55rem; border-radius: 20px; background: rgba(6,214,160,0.1); color: var(--teal); border: 1px solid rgba(6,214,160,0.22); display: inline-block; }
.app-badge.soon { background: rgba(233,196,106,0.1); color: var(--gold); border-color: rgba(233,196,106,0.22); }

/* Trip cards grid */
.trips-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.trip-card  {
  display: block; text-decoration: none; color: inherit;
  position: relative; border-radius: var(--r); overflow: hidden;
  border: 1px solid var(--border); cursor: pointer;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s var(--ease);
  aspect-ratio: 4/3;
}
.trip-card:hover { border-color: var(--border-h); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.trip-cover { width: 100%; height: 100%; object-fit: cover; display: block; filter: brightness(0.6) saturate(0.75); transition: filter 0.4s; }
.trip-card:hover .trip-cover { filter: brightness(0.75) saturate(0.9); }
.trip-info {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 1.25rem 1.5rem;
  background: linear-gradient(to top, rgba(5,14,27,0.95) 0%, transparent 100%);
}
.trip-info h3 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 400; color: var(--text-1); margin-bottom: 0.2rem; }
.trip-info p  { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-3); }
.trip-badge   {
  position: absolute; top: 1rem; right: 1rem;
  font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 1px; text-transform: uppercase;
  padding: 0.22rem 0.65rem; border-radius: 20px;
  background: rgba(233,196,106,0.2); color: var(--gold); border: 1px solid rgba(233,196,106,0.35);
  backdrop-filter: blur(6px);
}

/* Album overlay */
.album-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(5,14,27,0.98); backdrop-filter: blur(12px);
  overflow-y: auto; padding: 0;
  opacity: 0; pointer-events: none;
  transition: opacity 0.35s var(--ease);
}
.album-overlay.open { opacity: 1; pointer-events: all; }
.album-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 2rem;
  background: rgba(5,14,27,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.album-header h2 { font-family: var(--font-display); font-size: 1.4rem; font-weight: 300; color: var(--text-1); }
.album-header p  { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-3); letter-spacing: 1px; }
.album-close {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--border); background: none;
  color: var(--text-2); font-size: 1.1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s, color 0.2s;
}
.album-close:hover { border-color: var(--blue-accent); color: var(--blue-accent); }
.album-body { padding: 2.5rem 2rem; max-width: 1200px; margin: 0 auto; }

/* Day groups */
.album-day { margin-bottom: 3rem; }
.album-day-label {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 3px; text-transform: uppercase;
  color: var(--blue-accent); margin-bottom: 1rem;
  display: flex; align-items: center; gap: 1rem;
}
.album-day-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* Masonry-style photo grid using CSS columns */
.photo-grid { column-count: 3; column-gap: 0.75rem; }
.photo-item {
  break-inside: avoid; margin-bottom: 0.75rem;
  border-radius: var(--r-sm); overflow: hidden;
  cursor: pointer; position: relative;
  border: 1px solid var(--border);
  transition: border-color 0.25s, transform 0.25s;
}
.photo-item:hover { border-color: var(--border-h); transform: scale(1.01); }
.photo-item img { width: 100%; display: block; filter: brightness(0.85); transition: filter 0.3s; }
.photo-item:hover img { filter: brightness(1); }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(0,0,0,0.97); backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s;
}
.lightbox.open { opacity: 1; pointer-events: all; }
.lightbox img { max-width: 92vw; max-height: 90vh; object-fit: contain; border-radius: var(--r-sm); }
.lightbox-close {
  position: fixed; top: 1.5rem; right: 1.5rem;
  width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2); background: rgba(0,0,0,0.6);
  color: #fff; font-size: 1.2rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s;
}
.lightbox-close:hover { border-color: var(--blue-accent); }
.lightbox-prev, .lightbox-next {
  position: fixed; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.18); background: rgba(0,0,0,0.55);
  color: #fff; font-size: 1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s, background 0.2s;
}
.lightbox-prev { left: 1.25rem; }
.lightbox-next { right: 1.25rem; }
.lightbox-prev:hover, .lightbox-next:hover { border-color: var(--blue-accent); background: rgba(0,180,216,0.15); }
.lightbox-caption { position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%); font-family: var(--font-mono); font-size: 0.68rem; color: rgba(255,255,255,0.45); letter-spacing: 1px; white-space: nowrap; }

@media (max-width: 900px) { .photo-grid { column-count: 2; } }
@media (max-width: 540px) { .photo-grid { column-count: 1; } .album-body { padding: 1.5rem 1rem; } }

/* ════════════════════════════════════════════════════════════════════════
   ALBUM PAGE (/apps/austria)
   ════════════════════════════════════════════════════════════════════════ */

.ap-back {
  position: absolute; top: calc(var(--nav-h) + 1.5rem); left: 2rem;
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-3);
  text-decoration: none; z-index: 1;
  transition: color 0.2s;
}
.ap-back:hover { color: var(--blue-accent); }

.ap-hero {
  min-height: 100vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  text-align: center; padding: 6rem 2rem 4rem;
  position: relative;
}
.ap-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(233,196,106,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.ap-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 400; color: var(--text-1);
  letter-spacing: 0.02em; margin-bottom: 0.5rem;
}
.ap-hero-sub {
  font-family: var(--font-mono);
  font-size: clamp(0.68rem, 1.5vw, 0.82rem);
  color: var(--gold); letter-spacing: 0.22em;
  text-transform: uppercase; margin-bottom: 1.5rem;
}
.ap-hero-route {
  font-size: 0.9rem; color: var(--text-3);
  line-height: 2; max-width: 560px;
}
.ap-scroll-hint {
  position: absolute; bottom: 2rem;
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--text-4); letter-spacing: 0.2em; text-transform: uppercase;
  animation: ap-pulse 2.5s ease-in-out infinite;
}
@keyframes ap-pulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 0.8; } }

.ap-day { padding: 4rem 0 2rem; }
.ap-day-header { text-align: center; padding: 2.5rem 2rem; }
.ap-day-num {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--text-4); margin-bottom: 0.5rem;
}
.ap-day-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 400; color: var(--text-1); margin-bottom: 0.3rem;
}
.ap-day-sub { font-size: 0.88rem; color: var(--text-3); letter-spacing: 0.04em; }
.ap-day-divider {
  width: 50px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue-accent), transparent);
  margin: 1.25rem auto 0; opacity: 0.4;
}

.ap-grid {
  max-width: 1200px; margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: grid; gap: 0.75rem;
}
.ap-g1 { grid-template-columns: 1fr; max-width: 820px; }
.ap-g2 { grid-template-columns: 1fr 1fr; }
.ap-g3 { grid-template-columns: 1fr 1fr; }
.ap-g3 .ap-card:first-child { grid-column: 1 / -1; }
.ap-g4 { grid-template-columns: 1fr 1fr; }
.ap-g5 { grid-template-columns: 1fr 1fr 1fr; }
.ap-g5 .ap-card:first-child { grid-column: 1 / 3; }
.ap-g6 { grid-template-columns: 1fr 1fr 1fr; }
.ap-g6 .ap-card:first-child { grid-column: 1 / 3; }
.ap-g7 { grid-template-columns: 1fr 1fr 1fr; }
.ap-g7 .ap-card:first-child { grid-column: 1 / 3; }
.ap-g9 { grid-template-columns: 1fr 1fr 1fr; }
.ap-g9 .ap-card:first-child { grid-column: 1 / 3; }
.ap-grid-cont { margin-top: 0.75rem; }

.ap-card {
  position: relative; overflow: hidden;
  border-radius: var(--r-sm); cursor: pointer;
  border: 1px solid var(--border);
  transition: transform 0.3s var(--ease), border-color 0.25s;
}
.ap-card:hover, .ap-card:focus { transform: scale(1.01); border-color: var(--border-h); outline: none; }
.ap-card img {
  width: 100%; height: 100%;
  object-fit: cover; display: block; min-height: 220px;
  filter: brightness(0.82);
  transition: transform 0.5s var(--ease), filter 0.35s;
}
.ap-card:hover img, .ap-card:focus img { transform: scale(1.04); filter: brightness(1); }
.ap-caption {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 2.5rem 1rem 0.85rem;
  background: linear-gradient(transparent, rgba(5,14,27,0.88));
  opacity: 0; transition: opacity 0.3s;
}
.ap-card:hover .ap-caption, .ap-card:focus .ap-caption { opacity: 1; }
.ap-caption-loc {
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 0.2rem;
}
.ap-caption-text { font-size: 0.82rem; color: var(--text-1); }

.ap-stats {
  max-width: 860px; margin: 3rem auto 5rem;
  padding: 3rem 2rem; text-align: center;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.ap-stats-title {
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 400;
  color: var(--text-1); margin-bottom: 2rem;
}
.ap-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1.5rem;
}
.ap-stat-val {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 400; color: var(--gold);
}
.ap-stat-lbl {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-4); margin-top: 0.3rem;
}

.ap-lightbox {
  position: fixed; inset: 0; z-index: 400;
  background: rgba(0,0,0,0.97);
  display: flex; justify-content: center; align-items: center;
  opacity: 0; pointer-events: none; transition: opacity 0.25s;
}
.ap-lightbox.open { opacity: 1; pointer-events: all; }
.ap-lightbox img { max-width: 90vw; max-height: 88vh; object-fit: contain; border-radius: var(--r-sm); }
.ap-lb-close {
  position: fixed; top: 1.5rem; right: 1.5rem;
  width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2); background: none;
  color: var(--text-2); font-size: 1.1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s, color 0.2s;
}
.ap-lb-close:hover { border-color: var(--blue-accent); color: var(--blue-accent); }
.ap-lb-prev, .ap-lb-next {
  position: fixed; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.15); background: none;
  color: var(--text-2); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; transition: border-color 0.2s, background 0.2s;
}
.ap-lb-prev { left: 1.25rem; }
.ap-lb-next { right: 1.25rem; }
.ap-lb-prev:hover, .ap-lb-next:hover { border-color: var(--blue-accent); background: rgba(0,180,216,0.1); }
.ap-lb-caption {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 0.68rem;
  color: rgba(255,255,255,0.4); letter-spacing: 0.1em; white-space: nowrap;
}

@media (max-width: 900px) {
  .ap-g5, .ap-g6, .ap-g7, .ap-g9 { grid-template-columns: 1fr 1fr; }
  .ap-g5 .ap-card:first-child,
  .ap-g6 .ap-card:first-child,
  .ap-g7 .ap-card:first-child,
  .ap-g9 .ap-card:first-child { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  .ap-g2, .ap-g3, .ap-g4, .ap-g5, .ap-g6, .ap-g7, .ap-g9 { grid-template-columns: 1fr; }
  .ap-g3 .ap-card:first-child,
  .ap-g5 .ap-card:first-child,
  .ap-g6 .ap-card:first-child,
  .ap-g7 .ap-card:first-child,
  .ap-g9 .ap-card:first-child { grid-column: 1; }
  .ap-caption { opacity: 1; }
  .ap-card img { min-height: 180px; }
  .ap-lb-prev { left: 0.5rem; }
  .ap-lb-next { right: 0.5rem; }
}

/* ════════════════════════════════════════════════════════════════════════
   SIGN IN PAGE
   ════════════════════════════════════════════════════════════════════════ */

.signin-page {
  min-height: 100vh; display: flex; align-items: center;
  justify-content: center; position: relative; z-index: 1; padding: 2rem;
}
.signin-card { width: 100%; max-width: 420px; padding: 3rem; text-align: center; }
.signin-logo {
  width: 60px; height: 60px; border: 2px solid var(--gold); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; color: var(--gold);
  margin: 0 auto 1.75rem;
}
.signin-card h1 { font-family: var(--font-display); font-size: 2rem; font-weight: 300; color: var(--text-1); margin-bottom: 0.5rem; }
.signin-card > p { font-size: 0.9rem; color: var(--text-3); margin-bottom: 2rem; }
.google-btn {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 0.75rem;
  padding: 0.9rem 1.5rem; background: #fff; color: #3c4043;
  border-radius: var(--r-sm); text-decoration: none;
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 500;
  border: 1px solid rgba(255,255,255,0.15);
  transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
  margin-bottom: 1.5rem;
}
.google-btn:hover { background: #f8f8f8; box-shadow: 0 4px 20px rgba(0,0,0,0.35); transform: translateY(-2px); }
.google-btn svg { width: 20px; height: 20px; flex-shrink: 0; }
.signin-divider { font-family: var(--font-mono); font-size: 0.62rem; color: var(--text-4); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 1.25rem; }
.signin-note { font-size: 0.8rem; color: var(--text-3); margin-bottom: 0.5rem; }
.signin-secure { display: flex; align-items: center; justify-content: center; gap: 0.4rem; font-size: 0.75rem; color: var(--text-4); margin-top: 1.5rem; }

/* ════════════════════════════════════════════════════════════════════════
   404 PAGE
   ════════════════════════════════════════════════════════════════════════ */

.page-404 { min-height: 100vh; display: flex; align-items: center; justify-content: center; z-index: 1; position: relative; text-align: center; }
.num-404 { font-family: var(--font-display); font-size: clamp(6rem, 20vw, 14rem); font-weight: 300; line-height: 1; color: var(--blue-deep); margin-bottom: 1rem; }

/* ── Footer ──────────────────────────────────────────────────────────── */
footer { position: relative; z-index: 1; background: var(--bg-1); border-top: 1px solid var(--border); padding: 2.5rem 0; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.footer-copy  { font-family: var(--font-mono); font-size: 0.66rem; color: var(--text-3); letter-spacing: 1px; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-link  { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 1px; color: var(--text-3); text-decoration: none; transition: color 0.2s; }
.footer-link:hover { color: var(--blue-accent); }

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; padding-top: calc(var(--nav-h) + 2.5rem); padding-bottom: 4rem; min-height: 100vh; }
  .hero-image-wrap { display: none; }
  .about-grid { grid-template-columns: 1fr; }

  .timeline::before { left: 22px; }
  .timeline-item { grid-template-columns: 44px 1fr; }
  .timeline-item:nth-child(even) .timeline-card,
  .timeline-item:nth-child(odd)  .timeline-card { grid-column: 2; grid-row: 1; margin: 0; }
  .timeline-item:nth-child(even) .timeline-dot,
  .timeline-item:nth-child(odd)  .timeline-dot  { grid-column: 1; }
  .timeline-empty { display: none; }

  .edu-grid { grid-template-columns: 1fr; }
  .research-card { grid-column: span 1; }
  .research-body { grid-template-columns: 1fr; }
  .research-metrics { grid-template-columns: repeat(4, 1fr); }

  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-links { justify-content: center; }
  #nav-coords { display: none; }
  #nav-hamburger { display: flex; }
  #nav-menu {
    display: none; position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: rgba(5,14,27,0.97); backdrop-filter: blur(16px);
    flex-direction: column; padding: 1.25rem; gap: 0.3rem;
    border-bottom: 1px solid var(--border);
  }
  #nav-menu.open { display: flex; }
  #nav-menu .nav-link { padding: 0.7rem 1rem; }
}
@media (max-width: 600px) {
  .hero-meta { gap: 1.5rem; }
  .hero-cta  { flex-direction: column; }
  .btn       { justify-content: center; }
  .about-highlights { grid-template-columns: 1fr; }
  .ventures-grid { grid-template-columns: 1fr; }
  .research-metrics { grid-template-columns: 1fr 1fr; }
  .section { padding: 60px 0; }
  .page-header { padding-top: calc(var(--nav-h) + 48px); padding-bottom: 48px; }
  .signin-card { padding: 2rem 1.5rem; }
  .container { padding: 0 1.25rem; }
  .timeline-card { padding: 1.25rem; }
  .venture-card  { padding: 1.5rem; }
}

/* ── Utility classes (replaces all inline styles) ─────────────────────── */
.u-tc        { text-align: center; }
.u-mx-auto   { margin-left: auto; margin-right: auto; }
.u-mt-1      { margin-top: 1rem; }
.u-mb-1      { margin-bottom: 1rem; }
.u-mb-2      { margin-bottom: 2rem; }
.u-mb-3      { margin-bottom: 3rem; }
.u-mb-175    { margin-bottom: 1.75rem; }
.u-pt-0      { padding-top: 0; }
.u-pt-sm     { padding-top: 1.5rem; }
.u-pt-md     { padding-top: 2rem; }
.u-pb-xl     { padding-bottom: 120px; }
.u-flex-center     { display: flex; justify-content: center; }
.u-flex-center-gap { display: flex; justify-content: center; gap: 1rem; }
.u-flex-row-center { display: flex; gap: 1rem; align-items: center; }
.u-inline-mb-sm    { display: inline-block; margin-bottom: 0.6rem; }

/* Page-header specific overrides */
.page-h1     { text-align: center; }
.page-sub    { margin-left: auto; margin-right: auto; text-align: center; margin-bottom: 1.75rem; }
.page-sub-tc { margin-left: auto; margin-right: auto; text-align: center; }
.page-cta    { display: flex; justify-content: center; }

/* Research card component */
.rc-title    { font-size: 1.35rem; }
.rc-meta     { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-3); margin-top: 0.25rem; letter-spacing: 0.5px; }
.rc-desc     { font-size: 0.9rem; color: var(--text-2); line-height: 1.7; margin-bottom: 1.25rem; }
.rc-badge-wrap { display: inline-block; margin-bottom: 0.6rem; }

/* Sign-in error message */
.signin-error-msg {
  display: none; color: #ff6b6b; font-size: 0.82rem;
  margin-bottom: 1rem; padding: 0.75rem;
  background: rgba(255,107,107,0.1);
  border: 1px solid rgba(255,107,107,0.25);
  border-radius: 6px;
}

/* 404 specific */
.not-found-label  { justify-content: center; display: flex; margin-bottom: 1rem; }
.not-found-text   { color: var(--text-2); font-size: 1rem; max-width: 380px; margin: 0 auto 2rem; line-height: 1.7; text-align: center; }
.not-found-cta    { display: flex; justify-content: center; gap: 1rem; }

/* ── Mobile-specific touch & tap improvements ──────────────────────────── */
@media (max-width: 900px) {
  /* Ensure all interactive elements have 44px min touch target */
  .nav-link    { min-height: 44px; display: flex; align-items: center; }
  .btn         { min-height: 44px; }
  .photo-item  { cursor: pointer; -webkit-tap-highlight-color: rgba(0,180,216,0.2); }
  .trip-card   { -webkit-tap-highlight-color: rgba(0,180,216,0.15); }
  .album-close, .lightbox-close,
  .lightbox-prev, .lightbox-next { min-width: 44px; min-height: 44px; }

  /* Better hero on mobile */
  .hero-bio    { font-size: 0.95rem; }
  .hero-label  { font-size: 0.65rem; }

  /* Timeline cards full-width readable on phone */
  .tl-tags     { gap: 0.3rem; }
  .tag         { font-size: 0.6rem; }

  /* Ventures grid single col padding */
  .venture-card h3 { font-size: 1.3rem; }
  .vm-value    { font-size: 1.1rem; }
}