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

:root {
  --bg: #041C32;
  --surface: #062A46;
  --surface-2: #0A3654;
  --accent: #E8ECF2;
  --accent-soft: rgba(232, 236, 242, 0.08);
  --text: #F4F6FA;
  --text-muted: #8FA3B8;
  --text-dim: #4C6579;
  --border: #0E3A5B;
  --font: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container { max-width: 1040px; margin: 0 auto; padding: 0 2rem; }

/* ===== NAV ===== */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 3rem;
  background: rgba(4, 28, 50, 0.8);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
nav:hover { border-color: var(--border); }
.nav-name { font-weight: 700; font-size: 1rem; letter-spacing: 0.02em; }
.nav-dot { color: var(--accent); }
.nav-links { display: flex; gap: 2.25rem; list-style: none; }
.nav-links a {
  font-size: 0.82rem; color: var(--text-muted); text-decoration: none;
  letter-spacing: 0.03em; transition: color 0.2s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 1px;
  background: var(--accent); transition: width 0.25s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  position: relative; padding: 6rem 2rem;
  background:
    radial-gradient(circle at 50% 35%, rgba(232,236,242,0.045), transparent 55%),
    var(--bg);
}
.hero-inner { max-width: 640px; }
.eyebrow {
  font-family: var(--mono); font-size: 0.75rem; color: var(--text-muted);
  letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 1.75rem;
}
h1 {
  font-size: clamp(3rem, 8vw, 5.5rem); font-weight: 700; letter-spacing: -0.045em;
  line-height: 1; margin-bottom: 1.5rem;
  background: linear-gradient(180deg, #FFFFFF 0%, #A9B7D0 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-tagline { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--text-muted); margin-bottom: 2.5rem; font-weight: 300; }
.hero-cta { display: flex; gap: 1rem; justify-content: center; }
.btn-primary {
  padding: 0.8rem 1.8rem; background: var(--accent); color: #08111F;
  font-size: 0.9rem; font-weight: 600; text-decoration: none; border-radius: 4px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,236,242,0.15); }
.btn-ghost {
  padding: 0.8rem 1.8rem; border: 1px solid var(--border); color: var(--text-muted);
  font-size: 0.9rem; font-weight: 500; text-decoration: none; border-radius: 4px;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.scroll-hint {
  position: absolute; bottom: 2.5rem; display: flex; flex-direction: column;
  align-items: center; gap: 0.6rem;
}
.scroll-hint span { font-family: var(--mono); font-size: 0.65rem; color: var(--text-dim); letter-spacing: 0.15em; text-transform: uppercase; }
.scroll-line { width: 1px; height: 36px; background: linear-gradient(var(--accent), transparent); animation: scrolldrop 2s infinite; }
@keyframes scrolldrop { 0% { opacity: 0; transform: scaleY(0); transform-origin: top; } 50% { opacity: 1; transform: scaleY(1); transform-origin: top; } 100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; } }

/* ===== SECTIONS ===== */
section { padding: 7rem 0; border-top: 1px solid var(--border); }
.section-label {
  font-family: var(--mono); font-size: 0.72rem; color: var(--text-muted);
  letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 1rem;
}
h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 600; letter-spacing: -0.035em;
  line-height: 1.1; margin-bottom: 1.5rem; max-width: 640px;
}

/* reveal animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ===== ABOUT ===== */
.about-flex { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; margin-bottom: 3.5rem; }
.about-right p { color: var(--text-muted); font-size: 1rem; line-height: 1.8; }
.about-right p + p { margin-top: 1.1rem; }

/* accordion */
.accordion { border-top: 1px solid var(--border); }
.acc-item { border-bottom: 1px solid var(--border); }
.acc-head {
  width: 100%; background: none; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem 0; color: var(--text); font-family: var(--font);
  font-size: 1.05rem; font-weight: 500; text-align: left; transition: color 0.2s;
}
.acc-head:hover { color: var(--accent); }
.acc-icon { font-size: 1.4rem; color: var(--accent); font-weight: 300; transition: transform 0.3s; }
.acc-item.open .acc-icon { transform: rotate(45deg); }
.acc-body { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.acc-item.open .acc-body { max-height: 200px; }
.acc-body p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.75; padding-bottom: 1.4rem; max-width: 720px; }

/* ===== PROJECTS ===== */
.projects-heading { margin-bottom: 3.5rem; }
.pcard {
  display: grid; grid-template-columns: 300px 1fr; gap: 0;
  border: 1px solid var(--border); border-radius: 10px; overflow: hidden;
  margin-bottom: 2rem; background: var(--surface); transition: border-color 0.3s;
}
.pcard:hover { border-color: rgba(232,236,242,0.22); }
.pcard-media { border-right: 1px solid var(--border); }
.pcard-img-placeholder {
  width: 100%; height: 100%; min-height: 260px; background: var(--surface-2);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.4rem;
}
.pcard-img-placeholder span { font-family: var(--mono); font-size: 0.68rem; color: var(--text-dim); letter-spacing: 0.1em; }
.pcard-img-placeholder p { font-size: 0.78rem; color: var(--text-dim); }
.pcard-img { display: block; width: 100%; height: 100%; min-height: 260px; max-width: 100%; object-fit: cover; }
.pcard-content { padding: 2rem; }
.pcard-tags { display: flex; gap: 0.5rem; margin-bottom: 1rem; flex-wrap: wrap; }
.tag {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.28rem 0.65rem; border-radius: 3px; border: 1px solid var(--border); color: var(--text-muted);
}
.tag-active { border-color: rgba(232,236,242,0.3); color: var(--text); }
.tag-done { border-color: rgba(74,222,128,0.35); color: #4ade80; }
h3 { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.03em; margin-bottom: 0.7rem; }
.pcard-desc { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; margin-bottom: 1.5rem; max-width: 560px; }
.expand-btn {
  background: none; border: 1px solid var(--border); color: var(--text); cursor: pointer;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.05em; padding: 0.55rem 1rem;
  border-radius: 4px; display: inline-flex; align-items: center; gap: 0.5rem; transition: all 0.2s;
}
.expand-btn:hover { border-color: var(--accent); color: var(--accent); }
.expand-icon { transition: transform 0.3s; }
.expand-btn.active .expand-icon { transform: rotate(180deg); }
.expand-panel { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.expand-panel.open { max-height: 800px; }
.expand-inner { padding-top: 1.75rem; }
.spec-row { display: grid; grid-template-columns: 110px 1fr; gap: 1rem; padding: 0.75rem 0; border-bottom: 1px solid var(--border); }
.spec-key { font-family: var(--mono); font-size: 0.68rem; color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; padding-top: 0.1rem; }
.spec-val { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }
.mini-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.6rem; margin-top: 1.5rem; }
.mini-img {
  aspect-ratio: 4/3; background: var(--surface-2); border: 1px dashed var(--border); border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
}
.mini-img span { font-family: var(--mono); font-size: 0.65rem; color: var(--text-dim); letter-spacing: 0.08em; }
.mini-img img { display: block; width: 100%; height: 100%; max-width: 100%; object-fit: cover; border-radius: 5px; }

/* upcoming */
.soon-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-top: 1rem; }
.soon-card {
  border: 1px dashed var(--border); border-radius: 10px; padding: 2rem;
  display: flex; flex-direction: column; gap: 0.5rem; opacity: 0.55; transition: opacity 0.3s;
}
.soon-card:hover { opacity: 0.8; }
.soon-label { font-family: var(--mono); font-size: 0.65rem; color: var(--text-dim); letter-spacing: 0.1em; text-transform: uppercase; }
.soon-card h4 { font-size: 1.15rem; font-weight: 500; color: var(--text-muted); }

/* ===== CONTACT ===== */
.contact-sub { color: var(--text-muted); font-size: 1rem; max-width: 500px; margin-bottom: 2.5rem; }
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.contact-card {
  border: 1px solid var(--border); border-radius: 8px; padding: 1.5rem;
  text-decoration: none; display: flex; flex-direction: column; gap: 0.4rem;
  transition: border-color 0.2s, transform 0.2s; background: var(--surface);
}
.contact-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.cc-label { font-family: var(--mono); font-size: 0.66rem; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; }
.cc-value { font-size: 0.92rem; color: var(--text); }

/* ===== FOOTER ===== */
footer { padding: 2.5rem 0; border-top: 1px solid var(--border); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; }
.footer-inner span { font-family: var(--mono); font-size: 0.72rem; color: var(--text-dim); letter-spacing: 0.04em; }

/* ===== RESPONSIVE ===== */
@media (max-width: 820px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links { gap: 1.5rem; }
  section { padding: 4.5rem 0; }
  .about-flex { grid-template-columns: 1fr; gap: 1.5rem; }
  .pcard { grid-template-columns: 1fr; }
  .pcard-media { border-right: none; border-bottom: 1px solid var(--border); }
  .pcard-img-placeholder { min-height: 180px; }
  .soon-row { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 1fr; gap: 0.25rem; }
}