/* Dracula-inspired dark theme */
:root {
  color-scheme: dark;
  --navy: #21222c;
  --navy-light: #343746;
  --teal: #8be9fd;
  --teal-dark: #6272a4;
  --amber: #ff79c6;
  --purple: #bd93f9;
  --green: #50fa7b;
  --text: #f8f8f2;
  --muted: #9aa1c9;
  --bg: #1e1f29;
  --bg-alt: #23242f;
  --card: #2b2d3a;
  --border: #44475a;
  --danger: #ff5555;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

:root[data-theme='light'] {
  color-scheme: light;
  --teal: #0d9488;
  --teal-dark: #0f766e;
  --amber: #c2255c;
  --text: #1f2430;
  --muted: #5b6478;
  --bg: #f3f6fb;
  --bg-alt: #eef1f8;
  --card: #ffffff;
  --border: #e3e8f2;
  --shadow: 0 10px 30px rgba(14, 22, 48, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background-color 0.25s ease, color 0.25s ease;
}

a {
  color: var(--teal-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Public site ---------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--navy);
  color: #fff;
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  position: relative;
}

.site-nav .brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
}

.site-nav .brand span {
  color: var(--amber);
}

.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 22px;
  margin: 0;
  padding: 0;
}

.nav-toggle-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}

.site-nav a {
  color: #cfd6e8;
  font-size: 0.92rem;
  font-weight: 500;
}

.site-nav a:hover {
  color: #fff;
  text-decoration: none;
}

.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.18);
}

.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 60%, #3a3d5c 100%);
  color: #fff;
  padding: 72px 0 90px;
  scroll-margin-top: 70px;
}

.hero .eyebrow {
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
}

.hero h1 {
  font-size: 2.6rem;
  margin: 10px 0 6px;
}

.hero .title {
  font-size: 1.25rem;
  color: var(--teal);
  font-weight: 600;
  margin-bottom: 18px;
}

.hero p.objective {
  max-width: 640px;
  color: #cfd6e8;
}

.hero .contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 24px;
  font-size: 0.9rem;
  color: #e6eaf5;
}

section.block {
  padding: 56px 0;
  scroll-margin-top: 70px;
}

section.block h2 {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

section.block .section-sub {
  color: var(--muted);
  margin-bottom: 28px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}

.timeline {
  position: relative;
  border-left: 3px solid var(--teal);
  padding-left: 26px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--amber);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 2px var(--teal);
}

.timeline-item h3 {
  margin: 0 0 4px;
  font-size: 1.05rem;
}

.timeline-item .period {
  color: var(--teal-dark);
  font-weight: 600;
  font-size: 0.85rem;
}

.timeline-item .location {
  color: var(--muted);
  font-size: 0.88rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.badge {
  display: inline-block;
  background: rgba(139, 233, 253, 0.12);
  color: var(--teal);
  border-radius: 999px;
  padding: 3px 12px;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge.amber {
  background: rgba(255, 121, 198, 0.15);
  color: var(--amber);
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  background: var(--purple);
  color: var(--navy);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

.project-card h3 {
  margin: 6px 0 8px;
  font-size: 1.05rem;
}

.project-card .meta {
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 10px;
}

.achievement-card {
  border-left: 4px solid var(--amber);
}

.cert-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.cert-item:last-child {
  border-bottom: none;
}

.cert-date {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--teal);
  white-space: nowrap;
}

.referee-card h3 {
  margin: 0 0 4px;
}

.section-alt {
  background: var(--bg-alt);
}

.site-footer {
  background: var(--navy);
  color: #cfd6e8;
  padding: 34px 0;
  text-align: center;
  font-size: 0.88rem;
}

.site-footer a {
  color: var(--teal);
}

/* ---------- Admin ---------- */

.admin-shell {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 230px;
  background: var(--navy);
  color: #fff;
  padding: 24px 18px;
  flex-shrink: 0;
}

.admin-sidebar .brand {
  font-weight: 700;
  margin-bottom: 24px;
  color: #fff;
}

.admin-sidebar .brand span {
  color: var(--amber);
}

.admin-sidebar nav a {
  display: block;
  color: #cfd6e8;
  padding: 9px 10px;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.admin-sidebar nav a:hover,
.admin-sidebar nav a.active {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  text-decoration: none;
}

.admin-sidebar .logout {
  margin-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.admin-main {
  flex: 1;
  padding: 34px 40px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.btn {
  display: inline-block;
  border: none;
  cursor: pointer;
  background: var(--purple);
  color: var(--navy);
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
}

.btn:hover {
  background: #a875f0;
  text-decoration: none;
  color: var(--navy);
}

.btn.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn.danger {
  background: var(--danger);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
}

.dashboard-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.dashboard-card .count {
  font-size: 2rem;
  font-weight: 700;
  color: var(--teal);
}

table.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

table.admin-table th,
table.admin-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

table.admin-table th {
  background: var(--bg-alt);
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

table.admin-table tr:last-child td {
  border-bottom: none;
}

.actions-cell {
  display: flex;
  gap: 8px;
}

form.admin-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  max-width: 640px;
  box-shadow: var(--shadow);
}

form.admin-form label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 6px;
  margin-top: 16px;
}

form.admin-form input[type='text'],
form.admin-form input[type='date'],
form.admin-form input[type='number'],
form.admin-form input[type='password'],
form.admin-form input[type='email'],
form.admin-form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.92rem;
  font-family: inherit;
}

form.admin-form textarea {
  min-height: 100px;
  resize: vertical;
}

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
}

.login-card {
  background: var(--card);
  padding: 40px;
  border-radius: var(--radius);
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow);
}

.login-card h1 {
  font-size: 1.3rem;
  margin-bottom: 4px;
}

.login-card p {
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 20px;
}

.alert {
  background: rgba(214, 69, 69, 0.1);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.alert ul {
  margin: 0;
  padding-left: 18px;
}

.error-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--bg);
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .admin-shell {
    flex-direction: column;
  }

  .admin-sidebar {
    width: 100%;
    padding: 16px 18px;
  }

  .admin-sidebar nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }

  .admin-sidebar nav a {
    margin-bottom: 0;
  }

  .admin-sidebar .logout {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }

  .admin-main {
    padding: 24px 18px;
  }
}

@media (max-width: 720px) {
  .container {
    padding: 0 18px;
  }

  .hero {
    padding: 48px 0 56px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero .title {
    font-size: 1.05rem;
  }

  section.block {
    padding: 40px 0;
  }

  .nav-toggle-btn {
    display: flex;
  }

  .site-nav ul {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    background: var(--navy);
    padding: 12px 24px 20px;
    display: none;
  }

  .site-nav ul.open {
    display: flex;
  }

  .site-nav ul li {
    width: 100%;
  }

  .site-nav ul a {
    display: block;
    padding: 8px 0;
    width: 100%;
  }

  .theme-toggle-btn {
    margin-top: 6px;
  }

  .admin-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  table.admin-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .cert-item {
    flex-direction: column;
    gap: 4px;
  }

  .login-card {
    padding: 28px 22px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .contact-row {
    flex-direction: column;
    gap: 8px;
  }

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