/* ═══════════════════════════════════════════════════
   SpDly Studios — Portfolio CSS
   Aesthetic: Refined industrial, editorial dark
═══════════════════════════════════════════════════ */

:root {
  /* Core palette */
  --bg:          #09090b;
  --bg-alt:      #0e0f11;
  --surface:     #141518;
  --surface-2:   #1a1c20;
  --surface-3:   #202328;
  --border:      #242730;
  --border-sub:  #1a1d22;

  /* Text */
  --text:        #dde1ea;
  --text-2:      #8b90a0;
  --text-3:      #464b58;
  --text-4:      #2a2e38;

  /* Accent — cool steel teal */
  --accent:      #5fc4d0;
  --accent-2:    #3a9aaa;
  --accent-dim:  rgba(95,196,208,0.08);
  --accent-glow: rgba(95,196,208,0.18);

  /* Type */
  --font:        'Outfit', sans-serif;
  --serif:       'Fraunces', serif;
  --mono:        'IBM Plex Mono', monospace;

  /* Layout */
  --nav-h:       60px;
  --sp:          100px;
  --r:           12px;
  --r-lg:        18px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.no-scroll { overflow: hidden; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ── Utilities ─────────────────────────────────── */
.container { max-width: 1140px; margin: 0 auto; padding: 0 28px; }
.mono { font-family: var(--mono); }
.italic-serif { font-family: var(--serif); font-style: italic; font-weight: 300; }
.accent-text { color: var(--accent); }
.section { padding: var(--sp) 0; }
.section-alt { background: var(--bg-alt); }

.section-label {
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 14px;
  opacity: 0.8;
}
.section-heading {
  font-family: var(--font);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 52px;
  letter-spacing: -0.025em;
}

.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  letter-spacing: 0.03em;
}
.tag.sm { font-size: 0.62rem; padding: 2px 8px; }

/* ── LOGO / BRAND ─────────────────────────────── */
.logo-sp, .pre-sp, .footer-brand .logo-sp {
  font-family: var(--font);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--accent);
}
.logo-studios, .pre-studios, .footer-brand .logo-studios {
  font-family: var(--font);
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--text-2);
  margin-left: 4px;
  font-size: 0.85em;
  text-transform: uppercase;
}

/* ── PRELOADER ────────────────────────────────── */
#preloader {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.7s ease, visibility 0.7s ease;
}
#preloader.done { opacity: 0; visibility: hidden; pointer-events: none; }

.pre-inner { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.pre-wordmark { font-size: 1.6rem; }
.pre-wordmark .pre-sp { opacity: 0; animation: preIn 0.5s ease 0.3s forwards; }
.pre-wordmark .pre-studios { opacity: 0; animation: preIn 0.5s ease 0.6s forwards; }
@keyframes preIn { to { opacity: 1; } }

.pre-bar-wrap {
  width: 200px; height: 1px;
  background: var(--border);
  overflow: hidden;
}
.pre-bar {
  height: 100%; width: 0;
  background: var(--accent);
  animation: preLoad 1.4s cubic-bezier(0.4,0,0.2,1) 0.5s forwards;
}
@keyframes preLoad { to { width: 100%; } }
.pre-label { font-size: 0.64rem; color: var(--text-3); letter-spacing: 0.1em; }

/* ── SCROLL PROGRESS ─────────────────────────── */
#scroll-progress {
  position: fixed; top: 0; left: 0;
  height: 1px; width: 0%;
  background: var(--accent);
  z-index: 1000;
  transition: width 0.08s linear;
}

/* ── NAVBAR ──────────────────────────────────── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 900;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 36px;
  transition: background 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: rgba(9,9,11,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-color: var(--border-sub);
}
.nav-logo { font-size: 1.1rem; display: flex; align-items: baseline; }
.nav-links { display: flex; gap: 36px; }
.nav-links a {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-2);
  letter-spacing: 0.06em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

.nav-hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.nav-hamburger span {
  display: block; width: 22px; height: 1px;
  background: var(--text-2);
  transition: transform 0.3s, opacity 0.3s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ═══════════════════════════════════════════════
   HERO — Full redesign
═══════════════════════════════════════════════ */
#hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg);
}

/* ── Node canvas ──────────────────────────────── */
#node-canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* ── Parallax depth layers with animated gradients ────────────────────── */
.parallax-bg {
  position: absolute; inset: 0;
  pointer-events: none;
  z-index: 2;
  will-change: transform;
  background: linear-gradient(135deg, rgba(95,196,208,0.08) 0%, transparent 40%),
              linear-gradient(-45deg, rgba(95,196,208,0.06) 0%, transparent 45%),
              linear-gradient(45deg, rgba(95,196,208,0.04) 0%, transparent 50%);
  background-size: 400% 400%, 300% 300%, 350% 350%;
  animation: gradientShift 15s ease infinite, gradientFlow 20s ease-in-out infinite;
}
@keyframes gradientShift {
  0% { background-position: 0% 50%, 100% 50%, 50% 100%; }
  50% { background-position: 100% 50%, 0% 50%, 100% 0%; }
  100% { background-position: 0% 50%, 100% 50%, 50% 100%; }
}
@keyframes gradientFlow {
  0% { filter: hue-rotate(0deg) brightness(1); }
  50% { filter: hue-rotate(3deg) brightness(1.1); }
  100% { filter: hue-rotate(0deg) brightness(1); }
}

/* ── Hero content ─────────────────────────────── */
.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: calc(var(--nav-h) + 40px) 24px 80px;
  max-width: 900px;
  width: 100%;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 28px;
}
.eyebrow-line {
  display: block;
  width: 40px; height: 1px;
  background: var(--accent);
  opacity: 0.5;
}

.hero-name {
  font-family: var(--font);
  font-size: clamp(4rem, 11vw, 9rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.9;
  margin-bottom: 0;
  display: block;
}
.name-block { display: inline; }

.hero-initial {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(3rem, 7vw, 6rem);
  color: var(--accent);
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 32px;
  line-height: 1;
  opacity: 0.9;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: 32px;
  font-weight: 300;
}
.hero-tagline .italic-serif {
  font-size: 1.1em;
  color: var(--text);
}

.hero-pills {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px;
  margin-bottom: 40px;
}
.pill {
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: rgba(20,21,24,0.7);
  color: var(--text-2);
  letter-spacing: 0.04em;
  backdrop-filter: blur(8px);
  transition: border-color 0.2s, color 0.2s;
}
.pill:hover { border-color: var(--accent-2); color: var(--accent); }

.hero-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

.btn-primary, .btn-ghost {
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 11px 28px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.22s ease;
  display: inline-block;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--accent);
  color: #09090b;
  border-color: var(--accent);
  font-weight: 600;
}
.btn-primary:hover { background: #7ad4de; border-color: #7ad4de; }
.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border-color: var(--border);
}
.btn-ghost:hover { color: var(--accent); border-color: var(--accent-2); background: var(--accent-dim); }

/* Scroll cue */
.hero-scroll-cue {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  z-index: 10;
  opacity: 0;
  animation: fadeIn 1s ease 2.2s forwards;
}
@keyframes fadeIn { to { opacity: 1; } }
.cue-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, transparent, var(--accent));
  animation: cueGrow 2s ease-in-out infinite;
}
@keyframes cueGrow {
  0%,100% { transform: scaleY(0.3); opacity: 0.4; transform-origin: top; }
  50%      { transform: scaleY(1);   opacity: 1;   transform-origin: top; }
}
.hero-scroll-cue span { font-size: 0.6rem; color: var(--text-3); letter-spacing: 0.15em; }

/* Bottom fade */
.hero-fade-bottom {
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 180px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
  z-index: 9;
}

/* ── Hero reveal animations ─────────────────── */
.reveal-hero {
  opacity: 0;
  transform: translateY(24px);
  animation: heroReveal 0.8s cubic-bezier(0.16,1,0.3,1) both;
  animation-delay: calc(0.15s + var(--d, 0) * 0.12s);
}
@keyframes heroReveal {
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════
   ABOUT
═══════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 72px;
  align-items: start;
}

/* Photo */
.about-photo-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
}
.about-photo-inner {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
}
.about-photo-inner img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: var(--r-lg);
}
.photo-fallback {
  display: flex; flex-direction: column; align-items: center;
}

.frame-accent {
  position: absolute;
  width: 16px; height: 16px;
  border-color: var(--accent);
  border-style: solid;
  border-width: 0;
  opacity: 0.6;
}
.frame-accent.tl { top: 12px; left: 12px; border-top-width: 1.5px; border-left-width: 1.5px; }
.frame-accent.tr { top: 12px; right: 12px; border-top-width: 1.5px; border-right-width: 1.5px; }
.frame-accent.bl { bottom: 12px; left: 12px; border-bottom-width: 1.5px; border-left-width: 1.5px; }
.frame-accent.br { bottom: 12px; right: 12px; border-bottom-width: 1.5px; border-right-width: 1.5px; }

.about-badge {
  position: absolute;
  bottom: 16px; left: 50%; transform: translateX(-50%);
  font-size: 0.62rem;
  color: var(--accent);
  border: 1px solid rgba(95,196,208,0.3);
  background: rgba(9,9,11,0.85);
  padding: 5px 14px;
  border-radius: 20px;
  display: flex; align-items: center; gap: 7px;
  white-space: nowrap;
  backdrop-filter: blur(8px);
}
.badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.about-quick-facts {
  margin-top: 20px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
}
.qf-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-sub);
  font-size: 0.83rem;
}
.qf-item:last-child { border-bottom: none; }
.qf-label { font-size: 0.6rem; color: var(--text-3); letter-spacing: 0.08em; text-transform: uppercase; }
.qf-val { color: var(--text-2); }

.about-text-col p {
  color: var(--text-2);
  margin-bottom: 16px;
  font-size: 0.97rem;
  font-weight: 300;
}
.about-stats {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px;
  margin-top: 40px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 22px 20px;
  transition: border-color 0.2s, background 0.2s;
}
.stat-card:hover { border-color: var(--accent-2); background: var(--surface-2); }
.stat-num {
  font-family: var(--font);
  font-size: 2rem; font-weight: 800;
  color: var(--accent);
  line-height: 1; margin-bottom: 5px;
  letter-spacing: -0.03em;
}
.stat-label { font-family: var(--mono); font-size: 0.62rem; color: var(--text-2); line-height: 1.4; }

/* ═══════════════════════════════════════════════
   SKILLS
═══════════════════════════════════════════════ */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 22px;
  transition: border-color 0.2s;
}
.skill-group-label { font-size: 0.62rem; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 14px; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.skill-tag {
  font-family: var(--mono); font-size: 0.67rem;
  padding: 3px 9px; border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-2);
  transition: all 0.15s;
  cursor: default;
}
.skill-tag:hover { color: var(--accent); border-color: var(--accent-2); background: var(--accent-dim); }

/* ═══════════════════════════════════════════════
   TIMELINE
═══════════════════════════════════════════════ */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: ''; position: absolute; left: 7px; top: 4px; bottom: 4px;
  width: 1px; background: var(--border);
}
.timeline-item { position: relative; margin-bottom: 44px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-marker {
  position: absolute; left: -30px; top: 7px;
  width: 14px; height: 14px; border-radius: 50%;
  border: 1.5px solid var(--accent);
  background: var(--bg);
}
.timeline-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 26px 28px 22px;
  transition: border-color 0.2s;
}
.timeline-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 5px; }
.timeline-date { font-size: 0.65rem; color: var(--accent); }
.timeline-company { font-weight: 600; font-size: 0.88rem; }
.timeline-role { font-size: 1rem; font-weight: 500; margin-bottom: 14px; }
.timeline-points { padding-left: 14px; margin-bottom: 14px; }
.timeline-points li { color: var(--text-2); font-size: 0.9rem; margin-bottom: 5px; position: relative; }
.timeline-points li::before { content: '—'; position: absolute; left: -14px; color: var(--text-4); }
.timeline-tags { display: flex; flex-wrap: wrap; gap: 6px; }

/* ═══════════════════════════════════════════════
   RESEARCH
═══════════════════════════════════════════════ */
.research-grid { display: grid; grid-template-columns: 3fr 2fr; gap: 20px; }
.research-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  transition: border-color 0.2s, transform 0.2s;
}
.research-card:hover { transform: translateY(-2px); border-color: var(--accent-2); }
.research-card.featured { border-color: rgba(95,196,208,0.25); }
.research-card-inner { padding: 30px; }
.research-institution { font-size: 0.62rem; color: var(--text-3); margin-bottom: 10px; }
.research-title { font-family: var(--font); font-size: 1.1rem; font-weight: 600; margin-bottom: 12px; line-height: 1.4; }
.research-desc { font-size: 0.88rem; color: var(--text-2); margin-bottom: 20px; line-height: 1.75; font-weight: 300; }
.research-metric-row { display: flex; gap: 28px; margin-bottom: 20px; }
.research-metric { display: flex; flex-direction: column; gap: 4px; }
.metric-val { font-family: var(--font); font-size: 1.6rem; font-weight: 800; color: var(--accent); letter-spacing: -0.02em; }
.metric-label { font-size: 0.6rem; color: var(--text-2); letter-spacing: 0.04em; }
.research-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.research-conf {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.75rem; color: var(--text-2); font-style: italic;
  padding-top: 16px; border-top: 1px solid var(--border-sub);
}

/* ═══════════════════════════════════════════════
   PROJECTS GRID
═══════════════════════════════════════════════ */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: block; color: inherit;
  transition: border-color 0.22s, transform 0.22s;
  position: relative;
}
.project-card::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: var(--r-lg);
  box-shadow: inset 0 0 0 1px rgba(95,196,208,0);
  transition: box-shadow 0.22s;
  pointer-events: none;
}
.project-card:hover { border-color: var(--accent-2); transform: translateY(-4px); }
.project-card:hover::after { box-shadow: inset 0 0 0 1px rgba(95,196,208,0.15); }

.project-card-img {
  width: 100%; aspect-ratio: 16/9;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  position: relative;
}
.project-card-img::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(95,196,208,0.03), transparent 60%);
}
.project-card-img img { width: 100%; height: 100%; object-fit: cover; }
.img-placeholder { display: flex; flex-direction: column; align-items: center; gap: 8px; }

.project-card-body { padding: 18px 20px 20px; }
.project-card-cat { font-family: var(--mono); font-size: 0.6rem; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 6px; }
.project-card-title { font-family: var(--font); font-size: 0.93rem; font-weight: 600; margin-bottom: 7px; line-height: 1.35; }
.project-card-desc { font-size: 0.8rem; color: var(--text-2); line-height: 1.6; margin-bottom: 12px; font-weight: 300; }
.project-card-tags { display: flex; flex-wrap: wrap; gap: 5px; }

/* ═══════════════════════════════════════════════
   EDUCATION
═══════════════════════════════════════════════ */
.edu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 30px;
  transition: border-color 0.2s;
}
.edu-card:hover { border-color: var(--accent-2); }
.edu-year { font-size: 0.65rem; color: var(--accent); margin-bottom: 12px; }
.edu-degree { font-family: var(--font); font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; }
.edu-field { font-size: 0.9rem; color: var(--text-2); margin-bottom: 8px; }
.edu-institution { font-size: 0.88rem; font-weight: 500; color: var(--accent); margin-bottom: 10px; }
.edu-note { font-size: 0.78rem; color: var(--text-2); font-style: italic; }
.edu-cgpa { font-size: 0.72rem; color: var(--accent); margin-top: 6px; }

/* ═══════════════════════════════════════════════
   PRESENTATIONS & TRAINING
═══════════════════════════════════════════════ */
.pt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.pt-col { display: flex; flex-direction: column; }
.pt-sub { font-size: 0.68rem; letter-spacing: 0.1em; color: var(--text-3); text-transform: uppercase; margin-bottom: 24px; }
.pt-item { display: flex; gap: 20px; padding-bottom: 22px; margin-bottom: 22px; border-bottom: 1px solid var(--border-sub); }
.pt-item:last-child { border-bottom: none; }
.pt-year { font-size: 0.62rem; color: var(--accent); width: 36px; flex-shrink: 0; padding-top: 3px; }
.pt-title { font-size: 0.9rem; font-weight: 600; margin-bottom: 3px; }
.pt-desc { font-size: 0.8rem; color: var(--text-2); line-height: 1.55; font-weight: 300; }

/* ═══════════════════════════════════════════════
   CONTACT
═══════════════════════════════════════════════ */
.contact-grid { display: grid; grid-template-columns: 1fr 480px; gap: 72px; }
.contact-intro { font-size: 0.97rem; color: var(--text-2); margin-bottom: 28px; line-height: 1.7; font-weight: 300; }
.contact-links { display: flex; flex-direction: column; gap: 14px; margin-bottom: 32px; }
.contact-link { display: flex; align-items: center; gap: 12px; font-size: 0.88rem; color: var(--text-2); transition: color 0.2s; }
.contact-link:hover { color: var(--accent); }
.contact-link svg { flex-shrink: 0; color: var(--accent); opacity: 0.7; }

.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-family: var(--mono); font-size: 0.62rem; color: var(--text-3); letter-spacing: 0.08em; text-transform: uppercase; }
.form-group input, .form-group textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-family: var(--font);
  font-size: 0.9rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
  resize: vertical;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent-2); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-4); }
.full-w { width: 100%; text-align: center; }

/* ═══════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════ */
.footer { background: var(--bg); border-top: 1px solid var(--border-sub); padding: 24px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.footer-brand { font-size: 1rem; display: flex; align-items: baseline; }
.footer-copy { font-size: 0.64rem; color: var(--text-4); }

/* ═══════════════════════════════════════════════
   SCROLL REVEAL
═══════════════════════════════════════════════ */
.reveal, .reveal-left, .reveal-right {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1);
}
.reveal-left { transform: translateX(-28px); }
.reveal-right { transform: translateX(28px); }
.revealed { opacity: 1 !important; transform: none !important; }

/* ═══════════════════════════════════════════════
   PROJECT PAGE
═══════════════════════════════════════════════ */
body.project-page { }
#project-hero { padding: calc(var(--nav-h) + 48px) 0 40px; border-bottom: 1px solid var(--border-sub); }
.back-link { display: inline-flex; align-items: center; gap: 6px; font-size: 0.68rem; color: var(--text-2); margin-bottom: 24px; transition: color 0.2s; }
.back-link:hover { color: var(--accent); }
.proj-hero-meta { font-family: var(--mono); font-size: 0.65rem; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 12px; }
.proj-hero-title { font-family: var(--font); font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; line-height: 1.15; margin-bottom: 12px; max-width: 760px; letter-spacing: -0.02em; }
.proj-hero-tagline { font-size: 1rem; color: var(--text-2); max-width: 620px; line-height: 1.7; margin-bottom: 20px; font-weight: 300; }
.proj-tags-row { display: flex; flex-wrap: wrap; gap: 8px; }

.metrics-band { background: var(--surface); border-bottom: 1px solid var(--border); padding: 22px 0; }
.metrics-inner { display: flex; flex-wrap: wrap; gap: 36px; }
.metric-item { display: flex; flex-direction: column; gap: 4px; }
.metric-item .metric-val { font-family: var(--font); font-size: 1.4rem; font-weight: 800; color: var(--accent); letter-spacing: -0.02em; }
.metric-item .metric-label { font-family: var(--mono); font-size: 0.6rem; color: var(--text-2); }

.proj-hero-img-wrap { padding: 32px 0; background: var(--bg-alt); }
.proj-hero-img {
  width: 100%; aspect-ratio: 16/7;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.proj-hero-img img { width: 100%; height: 100%; object-fit: cover; }

.proj-body { padding: 64px 0; }
.proj-section { margin-bottom: 52px; }
.proj-section-title { font-family: var(--mono); font-size: 0.65rem; color: var(--accent); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border-sub); }
.proj-section p { color: var(--text-2); font-size: 0.93rem; line-height: 1.8; font-weight: 300; }
.proj-list { display: flex; flex-direction: column; gap: 10px; }
.proj-list-item { display: flex; gap: 12px; font-size: 0.9rem; color: var(--text-2); font-weight: 300; }
.proj-list-item::before { content: '→'; color: var(--accent); flex-shrink: 0; }
.proj-stack-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.proj-stack-group { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); padding: 18px; }
.proj-stack-cat { font-family: var(--mono); font-size: 0.6rem; color: var(--accent); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.08em; }
.proj-stack-items { display: flex; flex-wrap: wrap; gap: 6px; }
.proj-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 6px; }
.proj-gallery-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; }
.proj-gallery-item img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.proj-gallery-caption { padding: 10px 14px; font-family: var(--mono); font-size: 0.62rem; color: var(--text-2); }
.proj-gallery-placeholder { width: 100%; aspect-ratio: 16/10; background: var(--surface-2); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; }

/* ═══════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════ */
@media (max-width: 960px) {
  :root { --sp: 72px; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-photo-frame { max-width: 280px; }
  .about-photo-col { align-items: center; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .research-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .edu-grid { grid-template-columns: 1fr; }
  .pt-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .proj-stack-grid { grid-template-columns: 1fr; }
  .proj-gallery { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --sp: 56px; }
  #navbar { padding: 0 20px; }
  .container { padding: 0 18px; }

  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: rgba(9,9,11,0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    flex-direction: column; gap: 0;
    transform: translateY(-110%);
    transition: transform 0.32s cubic-bezier(0.16,1,0.3,1);
    padding: 12px 0;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 14px 20px; border-bottom: 1px solid var(--border-sub); font-size: 0.8rem; }
  .nav-hamburger { display: flex; }

  .hero-name { font-size: clamp(3.2rem, 16vw, 6rem); }
  .hero-initial { font-size: clamp(2.2rem, 10vw, 4rem); }

  .about-stats { grid-template-columns: 1fr 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .metrics-inner { gap: 18px; }
  .proj-hero-title { font-size: 1.6rem; }

  .section-heading { font-size: 1.9rem; }
}