:root {
  --text: #e2e8f0;
  --muted: #94a3b8;
  --surface: rgba(15, 23, 42, 0.72);
  --border: rgba(148, 163, 184, 0.2);
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --button-text: #0f172a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  position: relative;
  overflow-x: hidden;
  transition: background 0.6s ease, color 0.6s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  transition: opacity 0.6s ease, background 0.6s ease;
}

body.theme-night {
  --bg: linear-gradient(135deg, #0b1028 0%, #05060d 100%);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --surface: rgba(15, 23, 42, 0.72);
  --border: rgba(148, 163, 184, 0.2);
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --button-text: #0f172a;
}

body.theme-night::before {
  background-image:
    radial-gradient(1px 1px at 20px 30px, rgba(255, 255, 255, 0.8), transparent 40%),
    radial-gradient(1px 1px at 80px 120px, rgba(255, 255, 255, 0.5), transparent 40%),
    radial-gradient(1px 1px at 140px 80px, rgba(255, 255, 255, 0.6), transparent 40%),
    radial-gradient(1px 1px at 200px 200px, rgba(255, 255, 255, 0.45), transparent 40%),
    radial-gradient(1px 1px at 260px 40px, rgba(255, 255, 255, 0.6), transparent 40%);
  background-size: 260px 260px;
  opacity: 0.7;
  animation: twinkle 6s ease-in-out infinite;
}

body.theme-light {
  --bg: linear-gradient(135deg, #bae6fd 0%, #7dd3fc 45%, #38bdf8 100%);
  --text: #0f172a;
  --muted: #475569;
  --surface: rgba(255, 255, 255, 0.85);
  --border: rgba(15, 23, 42, 0.12);
  --accent: #0284c7;
  --accent-strong: #0369a1;
  --button-text: #ffffff;
}

body.theme-light::before {
  background: radial-gradient(
    circle at top right,
    rgba(255, 255, 255, 0.95),
    rgba(255, 255, 255, 0.4) 45%,
    transparent 70%
  );
  opacity: 0.9;
  animation: none;
}

@keyframes twinkle {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 0.9;
  }
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.page-wrapper {
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-image {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  object-fit: cover;
  border: 1px solid var(--border);
}

.nav-link {
  color: var(--muted);
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--text);
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
}

.icon {
  width: 20px;
  height: 20px;
}

body.theme-night .icon-sun {
  display: none;
}

body.theme-night .icon-moon {
  display: inline;
}

body.theme-light .icon-sun {
  display: inline;
}

body.theme-light .icon-moon {
  display: none;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
}

.text-muted {
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.8rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 20px rgba(15, 23, 42, 0.2);
}

.btn-primary {
  background: var(--accent);
  color: var(--button-text);
  border-color: transparent;
}

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

.btn-ghost {
  background: transparent;
  color: var(--text);
}

.section-spacing {
  padding-top: 4.25rem;
}

.surface-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 1.5rem;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(10px);
}

.hero-media .image-frame {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 0.75rem;
  box-shadow: 0 25px 50px rgba(15, 23, 42, 0.2);
  width: min(100%, 560px);
}

.hero-media img {
  border-radius: 20px;
  width: 100%;
  height: auto;
}

.hero-media .resume-preview {
  border-radius: 20px;
  width: auto;
  max-width: 100%;
  max-height: 520px;
  height: auto;
  margin: 0 auto;
  display: block;
  object-fit: contain;
  background: #ffffff;
}

.resume-link {
  display: inline-block;
  margin-top: 0.7rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.resume-link:hover {
  color: var(--accent-strong);
}

.certificate-section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
}

.contact-section {
  padding-top: 3.25rem;
  padding-bottom: 3.5rem;
  margin-top: 0;
}

.contact-card {
  padding: 1.75rem 1.9rem;
  gap: 1.25rem;
}

.contact-content {
  max-width: 900px;
}

.contact-links {
  display: grid;
  gap: 0.75rem;
}

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

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
  font-weight: 500;
  width: fit-content;
}

.contact-link:hover {
  color: var(--accent-strong);
}

.contact-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.marquee {
  overflow: hidden;
  width: 100%;
  margin-top: 2rem;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 25s linear infinite;
}

.marquee-group {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0 1.5rem;
}

.certificate-item {
  display: block;
  width: auto;
  height: auto;
  max-width: 220px;
  max-height: 140px;
  object-fit: contain;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.15);
}

.certificate-item.certificate-pdf {
  border: 1px solid var(--border);
}

.certificate-section:hover .marquee-track {
  animation-play-state: paused;
}

@keyframes marquee {
  0% {
    transform: translateX(-50%);
  }
  100% {
    transform: translateX(0);
  }
}

.site-footer {
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}

@media (max-width: 768px) {
  .section-spacing {
    padding-top: 3rem;
  }

  .contact-section {
    padding-top: 2.75rem;
    padding-bottom: 2.75rem;
  }

  .certificate-item {
    max-width: 180px;
    max-height: 120px;
  }
}

@media (min-width: 1024px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  }

  .contact-card {
    padding: 2rem;
  }
}