/*
  components.css
  ---------------
  Reusable component styles shared across every page: sidebar, topbar,
  glass cards, buttons, badges, upload area, progress bar, tabs,
  notifications/toasts, modal, loading overlay.
*/

/* ---------------------------------------------------------------------- */
/* Sidebar                                                                  */
/* ---------------------------------------------------------------------- */

.sidebar {
  background: var(--bg-raised);
  border-right: 1px solid var(--border-hairline);
  padding: var(--sp-6) var(--sp-4);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 0 var(--sp-2);
  margin-bottom: var(--sp-8);
}

.sidebar-brand .brand-mark {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--gradient-signal);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #04140d;
  flex-shrink: 0;
}

.sidebar-brand .brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.sidebar-brand .brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-md);
  color: var(--text-primary);
}

.sidebar-brand .brand-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--signal-green);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-group { display: flex; flex-direction: column; gap: 2px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 10px var(--sp-3);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
  position: relative;
}

.nav-item svg { width: 17px; height: 17px; flex-shrink: 0; }

.nav-item:hover { background: var(--bg-panel-soft); color: var(--text-primary); }

.nav-item.active {
  background: var(--signal-green-dim);
  color: var(--signal-green);
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 16px;
  background: var(--signal-green);
  border-radius: var(--radius-pill);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: var(--sp-5);
  border-top: 1px solid var(--border-hairline);
}

.sidebar-status {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3);
  border-radius: var(--radius-sm);
  background: var(--bg-panel-soft);
  font-size: var(--fs-xs);
  color: var(--text-secondary);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal-green);
  box-shadow: 0 0 0 0 rgba(21, 216, 138, 0.5);
  animation: pulse-dot 2s infinite;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(21, 216, 138, 0.45); }
  70% { box-shadow: 0 0 0 6px rgba(21, 216, 138, 0); }
  100% { box-shadow: 0 0 0 0 rgba(21, 216, 138, 0); }
}

/* ---------------------------------------------------------------------- */
/* Topbar                                                                   */
/* ---------------------------------------------------------------------- */

.topbar {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-7);
  border-bottom: 1px solid var(--border-hairline);
  background: rgba(10, 14, 20, 0.7);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 30;
}

.topbar-search {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  background: var(--bg-panel-soft);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  width: 280px;
  color: var(--text-muted);
  font-size: var(--fs-sm);
}

.topbar-search svg { width: 15px; height: 15px; flex-shrink: 0; }

.topbar-right { display: flex; align-items: center; gap: var(--sp-4); }

.clock-readout {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-panel-soft);
  border: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  position: relative;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.icon-btn:hover { border-color: var(--border-strong); color: var(--text-primary); }
.icon-btn svg { width: 17px; height: 17px; }

.icon-btn .ping {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--alert-red);
}

.avatar-chip {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: #04101f;
}

/* ---------------------------------------------------------------------- */
/* Glass cards                                                              */
/* ---------------------------------------------------------------------- */

.glass-card {
  background: linear-gradient(180deg, var(--bg-elevated) 0%, var(--bg-panel) 100%);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-panel);
  padding: var(--sp-6);
}

.glass-card.tight { padding: var(--sp-5); }

.card-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ---------------------------------------------------------------------- */
/* Stat / KPI cards                                                        */
/* ---------------------------------------------------------------------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-5);
  margin-bottom: var(--sp-6);
}

@media (max-width: 1100px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .stat-grid { grid-template-columns: 1fr; } }

.stat-card {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  position: relative;
  overflow: hidden;
}

.stat-card .stat-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stat-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon svg { width: 17px; height: 17px; }
.stat-icon.green { background: var(--signal-green-dim); color: var(--signal-green); }
.stat-icon.blue { background: var(--data-blue-dim); color: var(--data-blue); }
.stat-icon.amber { background: var(--alert-amber-dim); color: var(--alert-amber); }
.stat-icon.red { background: var(--alert-red-dim); color: var(--alert-red); }

.stat-value {
  font-family: var(--font-mono);
  font-size: var(--fs-2xl);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.stat-trend {
  font-size: var(--fs-xs);
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-trend.up { color: var(--signal-green); }
.stat-trend.down { color: var(--alert-red); }
.stat-trend svg { width: 12px; height: 12px; }

/* ---------------------------------------------------------------------- */
/* Buttons                                                                  */
/* ---------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: var(--gradient-signal);
  color: #04140d;
}
.btn-primary:hover { box-shadow: var(--shadow-glow-green); transform: translateY(-1px); }

.btn-secondary {
  background: var(--bg-panel-soft);
  border-color: var(--border-strong);
  color: var(--text-primary);
}
.btn-secondary:hover { border-color: var(--data-blue); color: var(--data-blue); }

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

.btn-danger {
  background: var(--alert-red-dim);
  color: var(--alert-red);
  border-color: rgba(255, 71, 87, 0.3);
}
.btn-danger:hover { background: var(--alert-red); color: #1a0508; }

.btn-sm { padding: 7px 13px; font-size: var(--fs-xs); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* ---------------------------------------------------------------------- */
/* Badges                                                                   */
/* ---------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  font-weight: 600;
  font-family: var(--font-mono);
}

.badge.green { background: var(--signal-green-dim); color: var(--signal-green); }
.badge.blue { background: var(--data-blue-dim); color: var(--data-blue); }
.badge.amber { background: var(--alert-amber-dim); color: var(--alert-amber); }
.badge.red { background: var(--alert-red-dim); color: var(--alert-red); }
.badge.gray { background: rgba(139, 150, 168, 0.14); color: var(--text-secondary); }

/* ---------------------------------------------------------------------- */
/* Upload area                                                             */
/* ---------------------------------------------------------------------- */

.upload-zone {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--bg-panel-soft);
  padding: var(--sp-9) var(--sp-6);
  text-align: center;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  cursor: pointer;
}

.upload-zone:hover, .upload-zone.drag-active {
  border-color: var(--signal-green);
  background: var(--signal-green-dim);
}

.upload-zone .upload-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--sp-4);
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--signal-green);
}

.upload-zone .upload-icon svg { width: 24px; height: 24px; }

.upload-zone h3 { font-size: var(--fs-md); margin-bottom: var(--sp-2); }
.upload-zone p { color: var(--text-muted); font-size: var(--fs-sm); }
.upload-zone input[type="file"] { display: none; }

/* ---------------------------------------------------------------------- */
/* Progress bar                                                            */
/* ---------------------------------------------------------------------- */

.progress-track {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--bg-elevated);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-signal);
  border-radius: var(--radius-pill);
  width: 0%;
  transition: width var(--transition-base);
}

/* ---------------------------------------------------------------------- */
/* Tabs                                                                     */
/* ---------------------------------------------------------------------- */

.tab-row {
  display: flex;
  gap: var(--sp-2);
  border-bottom: 1px solid var(--border-hairline);
  margin-bottom: var(--sp-6);
  overflow-x: auto;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.tab-btn svg { width: 16px; height: 16px; }
.tab-btn:hover { color: var(--text-secondary); }
.tab-btn.active { color: var(--signal-green); border-color: var(--signal-green); }

/* ---------------------------------------------------------------------- */
/* Result cards                                                            */
/* ---------------------------------------------------------------------- */

.result-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--sp-6);
}

@media (max-width: 980px) { .result-grid { grid-template-columns: 1fr; } }

.result-meta-list { display: flex; flex-direction: column; gap: var(--sp-1); }

.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--border-hairline);
}

.meta-row:last-child { border-bottom: none; }
.meta-row .meta-label { color: var(--text-muted); font-size: var(--fs-sm); }
.meta-row .meta-value { font-family: var(--font-mono); font-size: var(--fs-sm); color: var(--text-primary); }

.media-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-hairline);
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
}

.media-frame img, .media-frame video { width: 100%; display: block; }

/* ---------------------------------------------------------------------- */
/* Empty / placeholder states                                              */
/* ---------------------------------------------------------------------- */

.empty-state {
  text-align: center;
  padding: var(--sp-8) var(--sp-5);
  color: var(--text-muted);
}

.empty-state .empty-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--sp-3);
  border-radius: 50%;
  background: var(--bg-panel-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-disabled);
}

.empty-state h4 { color: var(--text-secondary); font-size: var(--fs-base); margin-bottom: var(--sp-1); }
.empty-state p { font-size: var(--fs-sm); }

/* ---------------------------------------------------------------------- */
/* Loading overlay                                                         */
/* ---------------------------------------------------------------------- */

.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 20, 0.78);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--sp-3);
  border-radius: inherit;
  z-index: 10;
}

.spinner-ring {
  width: 34px;
  height: 34px;
  border: 3px solid var(--border-hairline);
  border-top-color: var(--signal-green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay .loading-text {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  letter-spacing: 0.06em;
}

/* ---------------------------------------------------------------------- */
/* Toast / notification stack                                              */
/* ---------------------------------------------------------------------- */

.toast-stack {
  position: fixed;
  top: var(--sp-6);
  right: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  z-index: 1000;
  width: 340px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  box-shadow: var(--shadow-panel);
  animation: toast-in var(--transition-base) ease-out;
}

.toast.leaving { animation: toast-out var(--transition-base) ease-in forwards; }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(24px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateX(24px); }
}

.toast .toast-icon {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.toast .toast-icon svg { width: 15px; height: 15px; }
.toast.warning .toast-icon { background: var(--alert-amber-dim); color: var(--alert-amber); }
.toast.danger .toast-icon { background: var(--alert-red-dim); color: var(--alert-red); }
.toast.success .toast-icon { background: var(--signal-green-dim); color: var(--signal-green); }
.toast.info .toast-icon { background: var(--data-blue-dim); color: var(--data-blue); }

.toast-body { flex: 1; min-width: 0; }
.toast-title { font-size: var(--fs-sm); font-weight: 600; margin-bottom: 2px; }
.toast-msg { font-size: var(--fs-xs); color: var(--text-secondary); }
.toast-close { color: var(--text-muted); flex-shrink: 0; }
.toast-close:hover { color: var(--text-primary); }
.toast-close svg { width: 14px; height: 14px; }

/* ---------------------------------------------------------------------- */
/* Modal                                                                    */
/* ---------------------------------------------------------------------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 11, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal-backdrop.open { opacity: 1; pointer-events: all; }

.modal-panel {
  width: 100%;
  max-width: 460px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  transform: translateY(12px) scale(0.98);
  transition: transform var(--transition-base);
}

.modal-backdrop.open .modal-panel { transform: translateY(0) scale(1); }

.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-5); }
.modal-header h3 { font-size: var(--fs-lg); }

.form-field { margin-bottom: var(--sp-4); }
.form-field label { display: block; font-size: var(--fs-xs); color: var(--text-muted); margin-bottom: var(--sp-2); text-transform: uppercase; letter-spacing: 0.05em; }

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--bg-panel-soft);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: var(--fs-sm);
  font-family: var(--font-body);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--signal-green);
  outline: none;
}

.modal-actions { display: flex; justify-content: flex-end; gap: var(--sp-3); margin-top: var(--sp-6); }

/* ---------------------------------------------------------------------- */
/* Tables                                                                   */
/* ---------------------------------------------------------------------- */

.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
  text-align: left;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--border-hairline);
}
.data-table td {
  padding: var(--sp-4);
  border-bottom: 1px solid var(--border-hairline);
  font-size: var(--fs-sm);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-panel-soft); }
.data-table td.mono-cell { font-family: var(--font-mono); color: var(--text-secondary); }

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

.row-actions { display: flex; gap: var(--sp-2); }

/* ---------------------------------------------------------------------- */
/* Section heading w/ filters row                                          */
/* ---------------------------------------------------------------------- */

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-5);
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.section-head h2 { font-size: var(--fs-lg); }

.filter-row { display: flex; gap: var(--sp-2); flex-wrap: wrap; }

.chip-filter {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-hairline);
  background: var(--bg-panel-soft);
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.chip-filter:hover { border-color: var(--border-strong); color: var(--text-primary); }
.chip-filter.active { background: var(--signal-green-dim); border-color: var(--signal-green); color: var(--signal-green); }