:root {
  --bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --surface: rgba(255, 255, 255, 0.95);
  --text: #1f2937;
  --muted: #6b7280;
  --card: #ffffff;
  --accent: #4f46e5;
  --border: rgba(255, 255, 255, 0.2);
  --chip: #eef2ff;
}

[data-theme='dark'] {
  --bg: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --surface: rgba(15, 23, 42, 0.92);
  --text: #e5e7eb;
  --muted: #94a3b8;
  --card: rgba(30, 41, 59, 0.9);
  --accent: #818cf8;
  --border: rgba(148, 163, 184, 0.2);
  --chip: rgba(79, 70, 229, 0.2);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.container {
  width: 100%;
  max-width: 520px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(14px);
}

.header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 10px;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
}

.profile {
  text-align: center;
  margin-bottom: 22px;
}

.avatar {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 10px;
  border: 2px solid var(--border);
}

.profile h1 {
  margin: 0;
  font-size: 1.9rem;
}

.bio {
  margin-top: 8px;
  color: var(--muted);
}

.controls {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.search {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
}

.categories {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border: 1px solid transparent;
  background: var(--chip);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
}

.chip.active {
  background: var(--accent);
  color: #fff;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.link-card {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--card);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.link-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.icon {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.link-info {
  flex: 1;
}

.link-title {
  margin: 0;
  font-size: 1.02rem;
}

.link-description {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.link-meta {
  text-align: right;
  color: var(--muted);
  font-size: 0.8rem;
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 16px;
}

footer {
  margin-top: 18px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

.admin-link {
  color: var(--accent);
  text-decoration: none;
}

.admin-link:hover {
  text-decoration: underline;
}

.admin-container {
  max-width: 760px;
}

.admin-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.admin-title {
  margin: 0;
  font-size: 1.8rem;
}

.admin-subtitle {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.admin-section {
  margin-top: 20px;
}

.admin-form {
  display: grid;
  gap: 10px;
}

.admin-list {
  display: grid;
  gap: 10px;
}

.admin-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
}

.admin-count {
  color: var(--muted);
  font-weight: 600;
}

.danger-btn {
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
}

.admin-error {
  margin-top: 14px;
  color: var(--accent);
}

@media (max-width: 600px) {
  .container {
    padding: 20px;
    border-radius: 18px;
  }

  .profile h1 {
    font-size: 1.65rem;
  }
}