:root {
  color-scheme: dark light;
  --bg: #f8f9ff;
  --surface: #ffffff;
  --surface-soft: #f4f6ff;
  --text: #111827;
  --muted: #55607c;
  --accent: #5f63ff;
  --accent-strong: #4f4bff;
  --accent-soft: rgba(95, 99, 255, 0.14);
  --border: rgba(17, 24, 39, 0.08);
  --shadow: 0 24px 60px rgba(18, 26, 50, 0.08);
}

[data-theme="dark"] {
  --bg: #080a14;
  --surface: #11151f;
  --surface-soft: #161b28;
  --text: #f7f8ff;
  --muted: #9aa5c2;
  --accent: #8b94ff;
  --accent-strong: #7a82ff;
  --accent-soft: rgba(139, 148, 255, 0.12);
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top left, rgba(95, 99, 255, 0.16), transparent 22%),
    radial-gradient(circle at bottom right, rgba(255, 103, 163, 0.16), transparent 26%),
    var(--bg);
  color: var(--text);
  transition: background 0.35s ease, color 0.35s ease;
}

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(248, 249, 255, 0.92);
  border-bottom: 1px solid var(--border);
}

[data-theme="dark"] .site-header {
  background: rgba(11, 15, 27, 0.92);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.primary-nav {
  display: flex;
  gap: 1.75rem;
}

.primary-nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.25s ease;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--text);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  gap: 0.35rem;
  flex-direction: column;
  justify-content: center;
  padding: 0.5rem;
  cursor: pointer;
}

.nav-toggle span {
  width: 1.5rem;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
}

.theme-toggle {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  padding: 0.75rem 0.95rem;
  cursor: pointer;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.section {
  padding: 30px 0;
}

.hero {
  min-height: calc(100vh - 92px);
  display: grid;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.hero-title {
  margin: 0;
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  line-height: 1.05;
}

/* Tighter typography spacing for a denser layout */
h2 {
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

.hero-accent {
  color: var(--accent-strong);
}

.hero-text {
  margin: 1.5rem 0 0;
  max-width: 44rem;
  color: var(--muted);
  line-height: 1.75;
}

.button,
.project-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.button {
  margin-top: 2rem;
  padding: 1rem 1.8rem;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #6b67ff);
  box-shadow: 0 18px 40px rgba(95, 99, 255, 0.22);
}

.button:hover {
  transform: translateY(-3px);
}

.hero-visual {
  display: grid;
  place-items: center;
}

.hero-card {
  width: min(380px, 100%);
  padding: 1.5rem;
  border-radius: 2rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.55));
  border: 1px solid rgba(255, 255, 255, 0.46);
  box-shadow: 0 35px 85px rgba(26, 46, 113, 0.13);
}

.profile-photo {
  width: 100%;
  border-radius: 1.5rem;
}

.about-grid,
.contact-grid {
  display: grid;
  gap: 2rem;
}

.about-card,
.about-image-card,
.contact-info,
.contact-form {
  padding: 2rem;
  border-radius: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.section-tag {
  display: inline-flex;
  padding: 0.55rem 0.95rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.about-card h2,
.section-header h2,
.contact-info h2 {
  margin: 1rem 0 1rem;
  line-height: 1.1;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.skill-list span {
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--text);
  font-size: 0.95rem;
}

.about-image-card img {
  width: 100%;
  border-radius: 1.4rem;
}

.section-header {
  max-width: 44rem;
  margin-bottom: 2rem;
}

.section-header p {
  margin: 0.75rem 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.project-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.project-card {
  overflow: hidden;
  border-radius: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(95, 99, 255, 0.2);
  box-shadow: 0 32px 75px rgba(95, 99, 255, 0.14);
}

.project-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.project-content {
  padding: 1.5rem;
}

.project-content h3 {
  margin: 0 0 0.8rem;
}

.contact-info p,
.contact-form label span {
  color: var(--muted);
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-links a {
  color: var(--accent);
  text-decoration: none;
  transition: transform 0.2s ease;
}

.social-links a:hover {
  transform: translateY(-2px);
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border-radius: 1rem;
  border: 1px solid var(--border);
  padding: 1rem;
  background: var(--bg);
  color: var(--text);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(95, 99, 255, 0.2);
  outline-offset: 2px;
}

.button--primary {
  width: fit-content;
}

.site-footer {
  padding: 2rem 0 3rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  color: var(--muted);
}

.footer-inner a {
  color: var(--accent);
  text-decoration: none;
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 860px) {
  .hero-grid,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100%, calc(100% - 1.5rem));
  }

  .header-inner {
    justify-content: space-between;
  }

  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    position: fixed;
    top: 80px;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: calc(100% - 2rem);
    max-width: 280px;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1.4rem;
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .primary-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .primary-nav a {
    padding: 0.65rem 0;
  }
}

@media (max-width: 520px) {
  .hero-title {
    font-size: 2.6rem;
  }

  .hero-text {
    margin-top: 1rem;
  }
}