/* ==============================
   OCI Manager - Dark Theme Styles
   ============================== */

:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-hover: #2a3a55;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-light: rgba(59, 130, 246, 0.15);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #22c55e;
  --warning: #eab308;
  --border: #334155;
  --border-light: #1e293b;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

/* ==============================
   Header
   ============================== */

.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(30, 41, 59, 0.85);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--accent-light);
  border-radius: var(--radius-sm);
  color: var(--accent);
}

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

.badge-beta {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 9999px;
  background: var(--accent-light);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  flex-shrink: 0;
}

.user-details {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.user-email {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.last-refresh {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* ==============================
   Main Layout
   ============================== */

.main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* ==============================
   State Overlays
   ============================== */

.state-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.state-overlay.hidden {
  display: none;
}

.error-box,
.empty-box {
  text-align: center;
  max-width: 400px;
}

.error-icon,
.empty-icon {
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
}

.error-title,
.empty-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.error-message,
.empty-message {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.error-icon {
  color: var(--danger);
}

/* ==============================
   Buttons
   ============================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
}

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

.btn-danger:hover:not(:disabled) {
  background: var(--danger-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-sm {
  padding: 5px 10px;
  font-size: 0.78rem;
}

/* ==============================
   Instance Grid
   ============================== */

.instance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
}

.instance-grid.hidden {
  display: none;
}

/* ==============================
   Instance Card
   ============================== */

.instance-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.instance-card:hover {
  border-color: var(--bg-tertiary);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.instance-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition);
}

.instance-card:hover::before {
  opacity: 1;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.card-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-word;
  line-height: 1.3;
}

.card-account-badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 9999px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
}

.account-1 {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.account-2 {
  background: rgba(168, 85, 247, 0.15);
  color: #a78bfa;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.card-detail {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.card-detail svg {
  flex-shrink: 0;
  opacity: 0.6;
}

.card-detail-label {
  color: var(--text-muted);
  min-width: 60px;
}

.state-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.state-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.state-running {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
}

.state-running::before {
  background: #22c55e;
  box-shadow: 0 0 6px rgba(34, 197, 94, 0.6);
}

.state-stopped {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.state-stopped::before {
  background: #ef4444;
  box-shadow: 0 0 6px rgba(239, 68, 68, 0.6);
}

.state-stopping {
  background: rgba(234, 179, 8, 0.15);
  color: #facc15;
}

.state-stopping::before {
  background: #eab308;
  box-shadow: 0 0 6px rgba(234, 179, 8, 0.6);
}

.state-starting {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.state-starting::before {
  background: #3b82f6;
  box-shadow: 0 0 6px rgba(59, 130, 246, 0.6);
}

.state-unknown {
  background: rgba(100, 116, 139, 0.15);
  color: #94a3b8;
}

.state-unknown::before {
  background: #64748b;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-light);
}

/* ==============================
   Skeleton Loading
   ============================== */

.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
  width: 100%;
}

.skeleton-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-hover) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

.skeleton-title {
  height: 20px;
  width: 65%;
  margin-bottom: 16px;
}

.skeleton-text {
  height: 14px;
  width: 100%;
  margin-bottom: 10px;
}

.skeleton-text.short {
  width: 45%;
}

.skeleton-actions {
  height: 32px;
  width: 100%;
  margin-top: 12px;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ==============================
   Modal
   ============================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fadeIn 150ms ease-out;
}

.modal-overlay.hidden {
  display: none;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  animation: scaleIn 200ms ease-out;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.modal-close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.modal-body {
  padding: 20px 24px;
}

.modal-instance-name {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-weight: 500;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 0 24px 20px;
}

.resize-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.slider-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}

.slider-value {
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 9999px;
  background: var(--bg-tertiary);
  outline: none;
  cursor: pointer;
  transition: all var(--transition);
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.4);
  transition: all var(--transition);
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.4);
}

.slider:hover::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.25);
}

/* ==============================
   Toast Notifications
   ============================== */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  pointer-events: auto;
  min-width: 300px;
  max-width: 420px;
  animation: slideInRight 300ms ease-out;
}

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

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

.toast.toast-info {
  border-left: 3px solid var(--accent);
}

.toast-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.toast-success .toast-icon {
  color: var(--success);
}

.toast-error .toast-icon {
  color: var(--danger);
}

.toast-info .toast-icon {
  color: var(--accent);
}

.toast-message {
  flex: 1;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}

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

.toast.removing {
  animation: slideOutRight 250ms ease-in forwards;
}

/* ==============================
   Animations
   ============================== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOutRight {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* ==============================
   Responsive
   ============================== */

@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
  }

  .main {
    padding: 20px 16px;
  }

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

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

  .user-details {
    display: none;
  }

  .last-refresh {
    display: none;
  }

  .header-right {
    gap: 12px;
  }

  .toast-container {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }

  .toast {
    min-width: 0;
    max-width: none;
    width: 100%;
  }

  .modal-overlay {
    padding: 16px;
  }

  .card-actions {
    flex-direction: column;
  }

  .card-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .title {
    font-size: 1.05rem;
  }

  .badge-beta {
    display: none;
  }

  .instance-card {
    padding: 16px;
  }
}

/* ==============================
   Utility
   ============================== */

.hidden {
  display: none !important;
}