/* ==========================================================================
   NADID ADMIN DASHBOARD — DESIGN SYSTEM
   Modern, glassmorphic, responsive theme with dark/light modes.
   ========================================================================== */

:root {
  /* Color Palette - Dark (Default) */
  --bg-app: #090d16;
  --bg-sidebar: rgba(13, 19, 33, 0.85);
  --bg-topbar: rgba(13, 19, 33, 0.75);
  --bg-card: rgba(19, 27, 46, 0.7);
  --bg-card-hover: rgba(28, 39, 66, 0.85);
  --bg-input: rgba(10, 15, 28, 0.8);
  --bg-modal-overlay: rgba(0, 0, 0, 0.75);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(99, 102, 241, 0.5);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-primary-glow: rgba(99, 102, 241, 0.25);
  
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-purple: #a855f7;

  --sidebar-width: 260px;
  --topbar-height: 68px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 24px var(--accent-primary-glow);
  
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
}

[data-theme="light"] {
  --bg-app: #f1f5f9;
  --bg-sidebar: rgba(255, 255, 255, 0.9);
  --bg-topbar: rgba(255, 255, 255, 0.85);
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: #ffffff;
  --bg-input: #f8fafc;
  --bg-modal-overlay: rgba(15, 23, 42, 0.5);
  
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-active: rgba(99, 102, 241, 0.6);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.12);
}

/* Reset & Global */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-app);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Layout */
#app-layout {
  display: flex;
  width: 100vw;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-header {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.logo-badge {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px var(--accent-primary-glow);
}

.logo-text h1 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.logo-text span {
  font-size: 0.72rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.sidebar-nav {
  flex: 1;
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}

.nav-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 700;
  padding: 12px 12px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.nav-item:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
  color: #fff;
  background: var(--accent-primary);
  font-weight: 600;
  box-shadow: 0 4px 16px var(--accent-primary-glow);
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.nav-badge {
  margin-left: auto;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.server-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

/* Main Content Area */
.main-wrapper {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: calc(100vw - var(--sidebar-width));
}

/* Topbar */
.topbar {
  height: var(--topbar-height);
  background: var(--bg-topbar);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

.page-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Theme Toggle & Buttons */
.btn-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-icon:hover {
  color: var(--text-primary);
  border-color: var(--border-active);
  background: var(--bg-card-hover);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
}

.user-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-primary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
}

/* Page Container */
.content-body {
  padding: 32px;
  flex: 1;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.25s ease forwards;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Metric Cards Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-sm);
}

.stat-card:hover {
  transform: translateY(-3px);
  background: var(--bg-card-hover);
  border-color: var(--border-active);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon.blue { background: rgba(99, 102, 241, 0.15); color: var(--accent-primary); }
.stat-icon.cyan { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }
.stat-icon.emerald { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.stat-icon.amber { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.stat-icon.rose { background: rgba(244, 63, 94, 0.15); color: var(--accent-rose); }
.stat-icon.purple { background: rgba(168, 85, 247, 0.15); color: var(--accent-purple); }

.stat-info .stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.stat-info .stat-value {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Card Containers */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
}

/* Storage Bar */
.storage-bar-wrapper {
  margin: 16px 0 8px;
}

.storage-bar {
  height: 14px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  display: flex;
}

.storage-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-cyan));
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.storage-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 10px;
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

table.data-table th {
  padding: 12px 16px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
  font-weight: 600;
}

table.data-table td {
  padding: 14px 16px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

table.data-table tbody tr {
  transition: background 0.15s;
}

table.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}

/* Badges & Chips */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge.active, .badge.completed {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

.badge.uploading {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
}

.badge.failed, .badge.revoked, .badge.deleted {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
}

.badge.abandoned, .badge.cancelled {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-primary-glow);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  transform: translateY(-1px);
}

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

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

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  border-color: rgba(244, 63, 94, 0.3);
  color: var(--accent-rose);
}

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

/* Form Controls & Inputs */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  transition: all 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

/* Search & Filters Bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
  min-width: 240px;
}

.search-input-wrapper svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 16px;
  height: 16px;
}

.search-input-wrapper input {
  padding-left: 40px;
}

/* Login Modal / Container */
#login-modal {
  position: fixed;
  inset: 0;
  background: var(--bg-modal-overlay);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-lg);
  animation: modalPop 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  from { opacity: 0; transform: scale(0.94); }
  to { opacity: 1; transform: scale(1); }
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-modal-overlay);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 500;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  width: 100%;
  max-width: 540px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

/* Toast Alerts */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 2000;
}

.toast {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.88rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideInRight 0.3s ease;
}

.toast.success { border-left: 4px solid var(--accent-emerald); }
.toast.error { border-left: 4px solid var(--accent-rose); }
.toast.info { border-left: 4px solid var(--accent-cyan); }

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

/* Small Buttons */
.btn-sm {
  padding: 5px 12px;
  font-size: 0.78rem;
  border-radius: 6px;
}

.btn-icon-small {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

.btn-icon-small:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
}

/* Platform Tags */
.platform-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-primary);
}

/* File Name Cell */
.file-name-cell {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Action Buttons Cell */
.action-buttons-cell {
  display: flex;
  gap: 6px;
  align-items: center;
}

/* Clickable Row */
.clickable-row {
  cursor: pointer;
}

.clickable-row:hover {
  background: rgba(99, 102, 241, 0.06) !important;
}

/* Activity Feed */
.activity-feed {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 400px;
  overflow-y: auto;
}

.activity-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 8px;
  border-radius: var(--radius-sm);
  transition: background 0.15s;
}

.activity-item:hover {
  background: rgba(255, 255, 255, 0.03);
}

.activity-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}

.activity-icon.cyan {
  background: rgba(6, 182, 212, 0.12);
  color: var(--accent-cyan);
}

.activity-icon.purple {
  background: rgba(168, 85, 247, 0.12);
  color: var(--accent-purple);
}

.activity-content {
  flex: 1;
  min-width: 0;
}

.activity-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.activity-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Upload Progress Bar */
.upload-progress-wrapper {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 4px;
}

.upload-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-cyan));
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

.progress-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* User File Pills (in modal) */
.user-file-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.user-file-pill span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Empty State */
.empty-state {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Utility */
.text-center {
  text-align: center;
}

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

/* Loading skeleton pulse */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.skeleton {
  animation: pulse 1.5s ease-in-out infinite;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
}

/* Responsive */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-wrapper {
    margin-left: 0;
    width: 100vw;
  }
  .menu-toggle {
    display: block;
  }
  .content-body {
    padding: 20px 16px;
  }
  .topbar {
    padding: 0 16px;
  }
}