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

:root,
[data-theme="dark"] {
  --bg-primary: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  --bg-with-gradient:
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.08), transparent 50%),
    radial-gradient(circle at bottom left, rgba(252, 211, 77, 0.06), transparent 50%),
    linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-bg-hover: rgba(255, 255, 255, 0.08);
  --modal-bg: #1e293b;
  --modal-overlay: rgba(15, 23, 42, 0.85);
  --info-bg: rgba(56, 189, 248, 0.08);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);

  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-hover: rgba(255, 255, 255, 0.15);

  --accent-cyan: #38bdf8;
  --accent-yellow: #fcd34d;
  --accent-cyan-rgb: 56, 189, 248;

  --shadow-sm: 0 10px 30px rgba(56, 189, 248, 0.2);
  --shadow-md: 0 10px 40px rgba(56, 189, 248, 0.3);

  --header-bg: rgba(255, 255, 255, 0.05);
  --footer-text: rgba(255, 255, 255, 0.5);
}

[data-theme="light"] {
  --bg-primary: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
  --bg-with-gradient:
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.1), transparent 50%),
    radial-gradient(circle at bottom left, rgba(251, 191, 36, 0.08), transparent 50%),
    linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
  --card-bg: rgba(255, 255, 255, 0.7);
  --card-bg-hover: rgba(255, 255, 255, 0.85);
  --modal-bg: #f8fafc;
  --modal-overlay: rgba(100, 116, 139, 0.75);
  --info-bg: rgba(56, 189, 248, 0.1);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --border-color: rgba(148, 163, 184, 0.3);
  --border-color-hover: rgba(148, 163, 184, 0.5);

  --accent-cyan: #38bdf8;
  --accent-yellow: #fcd34d;
  --accent-cyan-rgb: 56, 189, 248;

  --shadow-sm: 0 4px 12px rgba(14, 165, 233, 0.15);
  --shadow-md: 0 8px 24px rgba(14, 165, 233, 0.2);

  --header-bg: rgba(255, 255, 255, 0.4);
  --footer-text: #64748b;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 4rem;
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

.site-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.site-logo span {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.nav-links a:hover {
  background: var(--card-bg);
}

.nav-links a.active {
  background: rgba(var(--accent-cyan-rgb), 0.2);
  color: var(--accent-cyan);
}

.main-shell {
  min-height: calc(100vh - 180px);
  background: var(--bg-with-gradient);
}

.section-wrap {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

.hero {
  text-align: center;
  margin-bottom: 4rem;
}

.avatar {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #38bdf8, #3b82f6);
  box-shadow: var(--shadow-sm);
}

.hero h1,
.page-title {
  font-size: 3.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #38bdf8, #fcd34d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.7;
  font-size: 1.15rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 20px;
  transition: all 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  background: var(--card-bg-hover);
  box-shadow: var(--shadow-sm);
}

.card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.7rem;
}

.card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.btn {
  display: inline-block;
  border: none;
  border-radius: 12px;
  padding: 1rem 2.2rem;
  background: linear-gradient(135deg, #38bdf8, #fcd34d);
  color: #0f172a;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

.panel {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 3rem;
}

.icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  margin-bottom: 1rem;
  color: var(--accent-cyan);
}

.site-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: 2rem;
  color: var(--footer-text);
  border-top: 1px solid var(--border-color);
}

.admin-link {
  text-decoration: none;
  opacity: 0.6;
}

.admin-link:hover {
  opacity: 1;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: var(--modal-overlay);
  z-index: 40;
}

.modal {
  width: 100%;
  max-width: 560px;
  background: var(--modal-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
}

.modal-close {
  float: right;
  font-size: 1.8rem;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--text-secondary);
}

.theme-options {
  display: grid;
  gap: 1rem;
  margin: 1.5rem 0;
}

.theme-btn {
  display: flex;
  gap: 1rem;
  align-items: center;
  border: 2px solid var(--border-color);
  background: var(--card-bg-hover);
  border-radius: 12px;
  padding: 1rem;
  cursor: pointer;
  color: var(--text-primary);
}

.theme-btn.active {
  border-color: var(--accent-cyan);
}

.preview {
  width: 56px;
  height: 56px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.preview.dark {
  background: linear-gradient(135deg, #1e293b, #0f172a);
}

.preview.light {
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
}

.repos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.repo-card {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.repo-meta {
  display: flex;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.contact-page .contact-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 4rem;
  line-height: 1.6;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 5rem;
}

.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 20px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.contact-card:hover {
  transform: translateY(-5px);
  background: var(--card-bg-hover);
  box-shadow: var(--shadow-sm);
}

.contact-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  background: var(--card-bg);
}

.contact-icon svg {
  width: 32px;
  height: 32px;
}

.linkedin-icon,
.location-icon {
  color: var(--accent-cyan);
}

.email-icon,
.response-icon {
  color: var(--accent-yellow);
}

.contact-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.contact-card p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  flex: 1;
}

.contact-link {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
}

.contact-link:hover {
  color: var(--accent-yellow);
  text-decoration: underline;
}

.contact-email {
  display: inline-block;
  font-size: 1rem;
  color: var(--accent-yellow);
  font-weight: 600;
}

.reverse-email {
  direction: rtl;
  unicode-bidi: bidi-override;
}

.email-card {
  cursor: pointer;
}

.email-card:hover .contact-email {
  color: var(--accent-cyan);
}

.opportunities-section {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 4rem 3rem;
  border-radius: 20px;
  color: var(--text-primary);
  margin-bottom: 4rem;
}

.opportunities-section h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  text-align: center;
}

.opportunities-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.opportunity-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.1rem;
}

.checkmark {
  width: 28px;
  height: 28px;
  background: rgba(var(--accent-cyan-rgb), 0.2);
  border: 2px solid var(--accent-cyan);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent-cyan);
  font-weight: 700;
}

@media (max-width: 768px) {
  .site-header {
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
  }

  .hero h1,
  .page-title {
    font-size: 2.4rem;
  }

  .panel {
    padding: 2rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .opportunities-section {
    padding: 3rem 2rem;
  }

  .opportunities-section h2 {
    font-size: 2rem;
  }

  .opportunities-list {
    grid-template-columns: 1fr;
  }
}