:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #eef3f9;
  --text: #0f172a;
  --muted: #475569;
  --primary: #0066b3;
  --primary-strong: #00518f;
  --border: #dbe3ee;
  --chip: #e8f0fb;
  --ok: #13a35f;
  --shadow: 0 10px 30px rgba(2, 35, 65, 0.08);
}

:root.dark {
  --bg: #0d1726;
  --surface: #101d30;
  --surface-2: #16243a;
  --text: #eff6ff;
  --muted: #c6d4e8;
  --primary: #4ba5ff;
  --primary-strong: #2e87e2;
  --border: #223857;
  --chip: #1c2f4b;
  --ok: #2ecc71;
  --shadow: 0 12px 34px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Poppins", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 0% 0%, #d9ecff 0%, var(--bg) 35%);
}
:root.dark body {
  background: radial-gradient(circle at 0% 0%, #102746 0%, var(--bg) 38%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(9px);
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.nav-link {
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.95rem;
  transition: 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: var(--chip);
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  width: 40px;
  height: 40px;
  border-radius: 12px;
  cursor: pointer;
  color: var(--text);
}

.hero {
  padding: 4.4rem 0 2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.2rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 2rem;
}

.kicker {
  display: inline-block;
  background: var(--chip);
  color: var(--primary);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.hero h1 {
  margin: 0.8rem 0;
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  line-height: 1.1;
}

.hero p { color: var(--muted); }

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.2rem 0;
}

.chip {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--chip);
  border: 1px solid var(--border);
  font-size: 0.8rem;
}

.actions { display: flex; gap: 0.7rem; flex-wrap: wrap; }

.btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0.72rem 1rem;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.btn-primary:hover { background: var(--primary-strong); }

.profile-card {
  padding: 1.1rem;
  display: grid;
  place-items: center;
  text-align: center;
}

.profile-card img {
  width: min(270px, 80%);
  aspect-ratio: 1;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--primary);
}

.section { padding: 2.2rem 0; }
.section h2 { margin-top: 0; }
.section p.section-intro { color: var(--muted); margin-top: 0; }

.grid {
  display: grid;
  gap: 1rem;
}

.grid.projects {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.card-image {
  width: 100%;
  height: 170px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}

.card-body {
  padding: 0.95rem;
}

.card-title {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.card-text {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.tags { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 0.8rem; }
.tag {
  background: var(--chip);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.24rem 0.52rem;
  font-size: 0.74rem;
}

.links { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.links .btn { padding: 0.44rem 0.7rem; font-size: 0.84rem; border-radius: 10px; }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.list {
  margin: 0;
  padding-left: 1rem;
}
.list li { margin-bottom: 0.35rem; color: var(--muted); }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.contact-link {
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 52px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-weight: 600;
}

.copy-box {
  margin-top: 1rem;
  display: flex;
  gap: 0.6rem;
}

.copy-box input {
  flex: 1;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  padding: 0.7rem;
}

.site-footer {
  margin-top: 2.5rem;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-wrap {
  min-height: 92px;
  display: grid;
  place-items: center;
  gap: 0.3rem;
  padding: 0.8rem 0;
  text-align: center;
  color: var(--muted);
}

.countdown {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
  margin-top: 1rem;
}

.countdown .item {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-2);
  padding: 0.5rem;
  text-align: center;
}

.countdown .num {
  display: block;
  color: var(--primary);
  font-weight: 700;
  font-size: 1.2rem;
}

.empty-state {
  border: 2px dashed var(--border);
  border-radius: 14px;
  padding: 1rem;
}

@media (max-width: 980px) {
  .hero-grid,
  .split,
  .grid.projects,
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .hero-grid,
  .split,
  .grid.projects,
  .contact-grid,
  .countdown {
    grid-template-columns: 1fr;
  }

  .nav-wrap {
    align-items: flex-start;
    flex-direction: column;
    padding: 0.8rem 0;
  }
}