:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: #e4e4e7;
  --text: #18181b;
  --text-muted: #71717a;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f12;
    --surface: #1a1a1f;
    --border: #2b2b31;
    --text: #f4f4f5;
    --text-muted: #a1a1aa;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

.page {
  max-width: 1000px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

h1 {
  font-size: 1.75rem;
  margin-bottom: 24px;
}

h2 {
  font-size: 1.15rem;
  margin: 0 0 16px;
}

/* Nav */
#nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  flex-wrap: wrap;
  gap: 10px;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
}

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

.nav-links a.active {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

/* Auth card */
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px;
  width: 100%;
  max-width: 380px;
}

.auth-card h1 {
  margin: 0 0 4px;
  text-align: center;
}

.subtitle {
  color: var(--text-muted);
  text-align: center;
  margin: 0 0 24px;
  font-size: 0.9rem;
}

form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 14px;
}

form input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}

form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}

button {
  font-family: inherit;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  width: 100%;
}

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

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.85rem;
  color: var(--text);
}

.btn-ghost:hover {
  background: var(--bg);
}

.btn-danger {
  background: transparent;
  border: 1px solid var(--danger);
  color: var(--danger);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.85rem;
}

.btn-danger:hover {
  background: color-mix(in srgb, var(--danger) 10%, transparent);
}

.error-message {
  color: var(--danger);
  font-size: 0.85rem;
  margin: -4px 0 12px;
}

.feedback {
  color: var(--success);
  font-size: 0.85rem;
}

/* Links grid (home) */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}

.link-button {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.link-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-color: var(--accent);
}

.link-icon {
  font-size: 2rem;
}

.link-title {
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
}

.empty-state {
  color: var(--text-muted);
  text-align: center;
  margin-top: 48px;
}

/* Cards / forms */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}

.form-card label {
  margin-bottom: 16px;
}

.form-actions {
  display: flex;
  gap: 10px;
}

.form-actions .btn-primary {
  width: auto;
}

.icon-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 6px 0 16px;
}

.icon-option {
  font-size: 1.3rem;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
}

.icon-option.selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 15%, transparent);
}

.links-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.link-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  flex-wrap: wrap;
}

.link-row-title {
  font-weight: 600;
  min-width: 140px;
}

.link-row-url {
  color: var(--text-muted);
  font-size: 0.85rem;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.link-row-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.inline-form {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.inline-form label {
  margin-bottom: 0;
  min-width: 160px;
}

.inline-form .btn-primary {
  width: auto;
  height: 40px;
  margin-top: auto;
}

#attempts-filter {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  margin-bottom: 16px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
}

.badge-success {
  background: color-mix(in srgb, var(--success) 15%, transparent);
  color: var(--success);
}

.badge-failure {
  background: color-mix(in srgb, var(--danger) 15%, transparent);
  color: var(--danger);
}

.badge-blocked {
  background: color-mix(in srgb, var(--warning) 15%, transparent);
  color: var(--warning);
}