/* Theme variables */
:root {
  /* Status colors */
  --color-operational: #22c55e;
  --color-degraded: #f59e0b;
  --color-outage: #ef4444;
  --color-unknown: #9ca3af;

  /* Dark theme (default) */
  --bg-page: #111827;
  --bg-card: #1f2937;
  --bg-card-hover: #252f3f;
  --bg-input: #374151;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --border-color: #374151;
  --divider: #374151;
  --bar-unknown: #4b5563;
}

[data-theme="light"] {
  --bg-page: #f9fafb;
  --bg-card: #ffffff;
  --bg-card-hover: #f3f4f6;
  --bg-input: #f3f4f6;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-muted: #6b7280;
  --border-color: #e5e7eb;
  --divider: #e5e7eb;
  --bar-unknown: #d1d5db;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  transition: background 0.2s, color 0.2s;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
}

.header__logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.header__actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.theme-toggle:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
}

.header__admin-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  transition: all 0.2s;
}

.header__admin-link:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
}

/* Overall Status */
.overall-status {
  text-align: center;
  padding: 2.5rem 0;
  margin-bottom: 2.5rem;
}

.overall-status__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 2rem;
}

.overall-status__icon--operational {
  background: var(--color-operational);
  color: white;
}

.overall-status__icon--degraded {
  background: var(--color-degraded);
  color: white;
}

.overall-status__icon--outage {
  background: var(--color-outage);
  color: white;
}

.overall-status__text {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.overall-status__description {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* Section Header */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 1.125rem;
  font-weight: 600;
}

/* Category */
.category {
  margin-bottom: 1.5rem;
}

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

/* Service Card */
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 0.75rem;
  transition: background 0.2s;
}

.service-card:hover {
  background: var(--bg-card-hover);
}

.service-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.service-card__info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.service-card__icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.service-card__icon--operational {
  background: var(--color-operational);
  color: white;
}

.service-card__icon--degraded {
  background: var(--color-degraded);
  color: white;
}

.service-card__icon--outage {
  background: var(--color-outage);
  color: white;
}

.service-card__icon--unknown {
  background: var(--color-unknown);
  color: white;
}

.service-card__details {
  display: flex;
  flex-direction: column;
}

.service-card__name {
  font-size: 1rem;
  font-weight: 600;
}

.service-card__status {
  font-size: 0.875rem;
  color: var(--color-operational);
}

.service-card__status--degraded {
  color: var(--color-degraded);
}

.service-card__status--outage {
  color: var(--color-outage);
}

.service-card__status--unknown {
  color: var(--color-unknown);
}

.service-card__uptime {
  text-align: right;
}

.service-card__uptime-value {
  font-size: 1rem;
  font-weight: 600;
}

.service-card__uptime-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* History Bar */
.history-bar {
  display: flex;
  gap: 2px;
  height: 32px;
}

.history-bar__segment {
  flex: 1;
  border-radius: 3px;
  transition: transform 0.15s;
  cursor: pointer;
  position: relative;
}

.history-bar__segment:hover {
  transform: scaleY(1.15);
}

.history-bar__segment--operational {
  background: var(--color-operational);
}

.history-bar__segment--degraded {
  background: var(--color-degraded);
}

.history-bar__segment--outage {
  background: var(--color-outage);
}

.history-bar__segment--unknown {
  background: var(--bar-unknown);
}

.history-bar__segment:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--bg-page);
  padding: 0.375rem 0.625rem;
  border-radius: 4px;
  font-size: 0.75rem;
  white-space: nowrap;
  z-index: 10;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem 0;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--divider);
  margin-top: 2rem;
}

/* Loading State */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem;
  color: var(--text-secondary);
}

.loading__spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--color-operational);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 1rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.empty-state__icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  opacity: 0.6;
}

.empty-state__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.empty-state__description {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* =====================
   Admin Panel Styles
   ===================== */

.admin-container {
  max-width: 960px;
}

/* Login Card */
.login-card {
  max-width: 380px;
  margin: 4rem auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
}

.login-card__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-align: center;
}

.login-card__subtitle {
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
}

/* Form Elements */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.375rem;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition: border-color 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-operational);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.75rem center;
  background-repeat: no-repeat;
  background-size: 1.25em 1.25em;
  padding-right: 2.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

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

.btn--primary:hover {
  opacity: 0.9;
}

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

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

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

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

.btn--sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
}

.btn--full {
  width: 100%;
}

/* Admin Header */
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--divider);
}

.admin-header__title {
  font-size: 1.5rem;
  font-weight: 700;
}

.admin-header__actions {
  display: flex;
  gap: 0.5rem;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--divider);
}

.tab {
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: -1px;
}

.tab:hover {
  color: var(--text-primary);
}

.tab--active {
  color: var(--color-operational);
  border-bottom-color: var(--color-operational);
}

/* Data Table */
.data-table {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.data-table__header {
  display: grid;
  grid-template-columns: 2fr 2fr 1fr 1fr auto;
  gap: 1rem;
  padding: 0.875rem 1rem;
  background: var(--bg-input);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.data-table__row {
  display: grid;
  grid-template-columns: 2fr 2fr 1fr 1fr auto;
  gap: 1rem;
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  align-items: center;
}

.data-table__row:hover {
  background: var(--bg-card-hover);
}

.data-table__actions {
  display: flex;
  gap: 0.5rem;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
}

.modal-overlay--visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  width: 100%;
  max-width: 440px;
  margin: 1rem;
  transform: translateY(10px);
  transition: transform 0.2s;
}

.modal-overlay--visible .modal {
  transform: translateY(0);
}

.modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.modal__title {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal__close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
}

.modal__close:hover {
  color: var(--text-primary);
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--divider);
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast--success {
  border-left: 3px solid var(--color-operational);
}

.toast--error {
  border-left: 3px solid var(--color-outage);
}

/* Settings */
.settings-grid {
  display: grid;
  gap: 1rem;
}

.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
}

.settings-card__title {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--divider);
}

/* Responsive */
@media (max-width: 640px) {
  .container {
    padding: 1.5rem 1rem;
  }

  .header {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .overall-status {
    padding: 1.5rem 0;
  }

  .overall-status__icon {
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
  }

  .overall-status__text {
    font-size: 1.25rem;
  }

  .data-table__header,
  .data-table__row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .data-table__header {
    display: none;
  }
}