/* SpamFilter - Admin UI
   Clean, professional mail admin panel */

:root {
  --color-bg: #0f1419;
  --color-surface: #1a2332;
  --color-surface-hover: #243044;
  --color-border: #2d3a4d;
  --color-text: #e6edf3;
  --color-text-muted: #8b9eb5;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-success-bg: rgba(34, 197, 94, 0.12);
  --color-warning-bg: rgba(245, 158, 11, 0.12);
  --color-danger-bg: rgba(239, 68, 68, 0.12);
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
  --radius: 8px;
  --radius-sm: 6px;
  --shadow: 0 4px 12px rgba(0,0,0,0.25);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  color: #60a5fa;
}

/* Layout */
.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: 1.5rem 0 0;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.sidebar-header {
  padding: 0 1.5rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

.sidebar-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-height: 0;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.5rem;
  color: var(--color-text-muted);
  transition: background .15s, color .15s;
  border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.sidebar-nav a.active {
  background: rgba(59, 130, 246, 0.12);
  color: var(--color-accent);
  border-left-color: var(--color-accent);
}

.sidebar-nav svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  opacity: 0.8;
}

.main {
  flex: 1;
  padding: 2rem 2.5rem;
  overflow-x: auto;
}

.page-header {
  margin-bottom: 1.75rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
  letter-spacing: -0.02em;
}

.page-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

tr:hover td {
  background: var(--color-surface-hover);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background .15s, color .15s, transform .1s;
}

.btn:active {
  transform: scale(0.98);
}

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

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

.btn-success {
  background: var(--color-success);
  color: white;
}
.btn-success:hover {
  background: #16a34a;
}

.btn-danger {
  background: var(--color-danger);
  color: white;
}
.btn-danger:hover {
  background: #dc2626;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
select,
textarea {
  width: 100%;
  max-width: 400px;
  padding: 0.6rem 0.9rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color .15s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

/* Alerts */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.alert-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.alert-error {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.alert-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 4px;
}

.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-muted { background: var(--color-surface-hover); color: var(--color-text-muted); }

/* Login page */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f1419 0%, #1a2332 100%);
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2.5rem;
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}

.login-card h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.login-card p {
  color: var(--color-text-muted);
  margin: 0 0 1.75rem;
  font-size: 0.9rem;
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

/* Dashboard layout */
.dashboard {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

@media (max-width: 900px) {
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 500px) {
  .stats-row {
    grid-template-columns: 1fr;
  }
}

.charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 800px) {
  .charts-row {
    grid-template-columns: 1fr;
  }
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 1000px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.dashboard-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.dashboard-chart {
  min-height: 280px;
}

.dashboard-spammers {
  min-height: 280px;
}

.chart-container {
  position: relative;
  height: 220px;
  margin-top: 1rem;
}

/* Spammers list (card-style rows) */
.spammers-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 1rem;
}

.spammer-row {
  display: grid;
  grid-template-columns: 2rem 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.spammer-row:last-child {
  border-bottom: none;
}

.spammer-flag {
  font-size: 1.25em;
  line-height: 1;
}

.spammer-ip {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text);
  word-break: break-all;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.spammer-hostname {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 400;
  word-break: break-word;
}

.spammer-count {
  font-weight: 600;
  color: var(--color-warning);
  min-width: 2.5rem;
  text-align: right;
}

.date-cell {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  white-space: nowrap;
}

.empty-compact {
  padding: 2rem 1rem;
}

/* Footer stats */
.dashboard-footer {
  display: flex;
  gap: 2rem;
  padding: 1rem 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--color-border);
}

.dashboard-footer .footer-stat strong {
  color: var(--color-text);
  margin-right: 0.35rem;
}

/* Stats grid (legacy / other pages) */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.stat-card {
  background: var(--color-bg);
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.stat-card.stat-small {
  padding: 1rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
}

.stat-value.stat-primary { color: var(--color-accent); }
.stat-value.stat-success { color: var(--color-success); }
.stat-value.stat-warning { color: var(--color-warning); }
.stat-value.stat-danger { color: var(--color-danger); }

.stat-label {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.ip-flag,
.spammer-flag {
  display: inline-block;
  margin-right: 0.5rem;
  font-size: 1.1em;
  vertical-align: middle;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--color-text-muted);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  opacity: 0.5;
  margin-bottom: 1rem;
}

/* User menu in header */
.user-menu {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.5rem;
}

.user-menu span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}