/* ==========================================================================
   OmniCore Master Dashboard - Modern Design System (Hostinger Subdomain)
   Ultra-premium, mobile-first, dark-themed responsive interface
   ========================================================================== */

:root {
  --bg-main: #070a11;
  --bg-card: rgba(16, 24, 39, 0.85);
  --bg-card-hover: rgba(22, 32, 51, 0.95);
  --bg-surface: #0e1524;
  --bg-input: #151d30;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(59, 130, 246, 0.25);
  --border-active: #3b82f6;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Theme Accents */
  --accent-blue: #38bdf8;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --accent-amber: #f59e0b;
  --accent-cyan: #06b6d4;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -3px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.15);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Outfit", Helvetica, Arial, sans-serif;
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(56, 189, 248, 0.06) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(168, 85, 247, 0.06) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(16, 185, 129, 0.04) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Password Auth Gate (Modal / Screen)
   ========================================================================== */
.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 13, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.auth-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7), 0 0 40px rgba(56, 189, 248, 0.1);
  width: 100%;
  max-width: 420px;
  padding: 36px 30px;
  text-align: center;
  animation: authSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes authSlideUp {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-logo {
  font-size: 42px;
  margin-bottom: 12px;
  display: inline-block;
  animation: floatIcon 3s ease-in-out infinite;
}

@keyframes floatIcon {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.auth-title {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
}

.auth-subtitle {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 24px;
}

.input-group {
  position: relative;
  margin-bottom: 16px;
}

.auth-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 44px 14px 16px;
  color: #fff;
  font-size: 15px;
  transition: var(--transition-fast);
}

.auth-input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

.toggle-pwd {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 18px;
  padding: 4px;
}

.toggle-pwd:hover {
  color: var(--text-main);
}

.btn-primary {
  width: 100%;
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #1d4ed8);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.auth-hint-btn {
  background: none;
  border: none;
  color: var(--accent-blue);
  font-size: 13px;
  margin-top: 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  opacity: 0.85;
}

.auth-hint-btn:hover {
  opacity: 1;
  text-decoration: underline;
}

.hint-box {
  background: rgba(56, 189, 248, 0.08);
  border: 1px dashed rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 12px;
  font-size: 13px;
  color: var(--accent-blue);
  display: none;
}

.auth-error {
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: #fda4af;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 14px;
  display: none;
}

.shake {
  animation: shake 0.4s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.top-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 10, 17, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 20px;
}

.header-container {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge {
  background: linear-gradient(135deg, #f43f5e, #8b5cf6, #3b82f6);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 5px 12px;
  border-radius: var(--radius-full);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.6; }
  100% { transform: scale(0.95); opacity: 1; }
}

.btn-icon {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-icon:hover {
  color: #fff;
  border-color: var(--border-glow);
  background: var(--bg-input);
}

/* ==========================================================================
   Primary Navigation Tabs (3 Core Options + Overview)
   ========================================================================== */
.nav-tabs-wrapper {
  max-width: 1320px;
  margin: 18px auto 0;
  padding: 0 20px;
}

.nav-tabs {
  display: flex;
  gap: 8px;
  background: rgba(14, 21, 36, 0.7);
  backdrop-filter: blur(8px);
  padding: 6px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  flex: 1;
  min-width: 140px;
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  background: var(--bg-card);
  color: #fff;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

/* Tab Colors */
.tab-btn[data-tab="overview"].active { color: var(--accent-blue); border-bottom: 2px solid var(--accent-blue); }
.tab-btn[data-tab="images"].active { color: var(--accent-rose); border-bottom: 2px solid var(--accent-rose); }
.tab-btn[data-tab="deep_feelings"].active { color: var(--accent-purple); border-bottom: 2px solid var(--accent-purple); }
.tab-btn[data-tab="studybuzz"].active { color: var(--accent-emerald); border-bottom: 2px solid var(--accent-emerald); }

/* ==========================================================================
   Main Content Layout
   ========================================================================== */
.main-content {
  max-width: 1320px;
  margin: 20px auto 60px;
  padding: 0 20px;
}

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

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

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

/* ==========================================================================
   KPI Cards Grid
   ========================================================================== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.kpi-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
}

.kpi-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--card-accent, var(--accent-blue)), transparent);
}

.kpi-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.kpi-title {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-icon {
  font-size: 20px;
  opacity: 0.8;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
}

.kpi-subtext {
  font-size: 12px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   Section Cards & Panels
   ========================================================================== */
.panel-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
  overflow: hidden;
}

.panel-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.panel-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

.panel-body {
  padding: 20px;
}

/* Sub Navigation Pills (Inside panels) */
.sub-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.sub-tab-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.sub-tab-btn:hover {
  color: #fff;
  border-color: var(--text-dim);
}

.sub-tab-btn.active {
  background: var(--accent-blue);
  color: #000;
  font-weight: 600;
  border-color: var(--accent-blue);
}

/* ==========================================================================
   Batch Tracker Bar (Images Section)
   ========================================================================== */
.batch-banner {
  background: linear-gradient(135deg, rgba(244, 63, 94, 0.1), rgba(168, 85, 247, 0.08));
  border: 1px solid rgba(244, 63, 94, 0.25);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.batch-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.batch-badge {
  background: var(--accent-rose);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.batch-progress-bar {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.batch-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #f43f5e, #fb7185);
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Image Grid & Cards (Images Section)
   ========================================================================== */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.pin-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.pin-card:hover {
  transform: translateY(-3px);
  border-color: rgba(244, 63, 94, 0.35);
}

.pin-thumb-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 5;
  background: #111827;
  overflow: hidden;
  cursor: pointer;
}

.pin-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.pin-card:hover .pin-thumb {
  transform: scale(1.04);
}

.pin-status-pill {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  backdrop-filter: blur(8px);
}

.pin-status-pill.posted {
  background: rgba(16, 185, 129, 0.85);
  color: #fff;
}

.pin-status-pill.pending {
  background: rgba(245, 158, 11, 0.85);
  color: #000;
}

.pin-batch-tag {
  position: absolute;
  bottom: 10px;
  left: 10px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  color: #fff;
}

.pin-details {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
}

.pin-id-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-dim);
}

.pin-links {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.btn-pill-link {
  font-size: 11px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-muted);
  text-decoration: none;
  border: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.btn-pill-link:hover {
  color: #fff;
  border-color: var(--accent-blue);
}

/* ==========================================================================
   Data Tables (Schedules, Logs, Responses, Leaderboard)
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
  text-align: left;
}

.data-table th {
  background: rgba(22, 32, 51, 0.8);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.6px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  vertical-align: middle;
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.25); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.25); }
.badge-error { background: rgba(244, 63, 94, 0.15); color: #fb7185; border: 1px solid rgba(244, 63, 94, 0.25); }
.badge-info { background: rgba(56, 189, 248, 0.15); color: #38bdf8; border: 1px solid rgba(56, 189, 248, 0.25); }
.badge-neutral { background: rgba(148, 163, 184, 0.15); color: #cbd5e1; border: 1px solid rgba(148, 163, 184, 0.2); }

/* ==========================================================================
   User Directory & Cards (Studybuzz Section)
   ========================================================================== */
.user-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.user-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.user-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-emerald);
}

.user-card.active {
  border-color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.05);
}

.user-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #059669, #10b981);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  color: #fff;
}

.user-info-name {
  font-weight: 600;
  color: #fff;
  font-size: 15px;
}

.user-info-handle {
  font-size: 12px;
  color: var(--text-dim);
}

.user-stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  text-align: center;
  background: var(--bg-input);
  padding: 10px;
  border-radius: var(--radius-sm);
  margin-top: 10px;
}

.user-stat-val {
  font-weight: 700;
  font-size: 16px;
  color: #fff;
}

.user-stat-lbl {
  font-size: 10px;
  color: var(--text-dim);
  text-transform: uppercase;
}

/* ==========================================================================
   Question Bank Search & Accordion
   ========================================================================== */
.search-bar-wrapper {
  position: relative;
  margin-bottom: 18px;
}

.search-input {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px 12px 42px;
  color: #fff;
  font-size: 14px;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-emerald);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  font-size: 16px;
}

.q-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 12px;
}

.q-topic-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 8px;
}

.q-text {
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.6;
}

.q-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

@media (max-width: 640px) {
  .q-options {
    grid-template-columns: 1fr;
  }
}

.q-opt {
  background: var(--bg-input);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  border: 1px solid transparent;
}

.q-opt.correct {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.35);
  color: #34d399;
  font-weight: 600;
}

/* ==========================================================================
   Image Preview Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

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

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bg-surface);
  border: none;
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 768px) {
  .header-container {
    flex-wrap: wrap;
  }
  
  .nav-tabs {
    justify-content: flex-start;
  }
  
  .tab-btn {
    flex: 0 0 auto;
    font-size: 13px;
    padding: 10px 14px;
  }
  
  .kpi-grid {
    grid-template-columns: 1fr 1fr;
  }

  .media-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .auth-card {
    padding: 28px 20px;
  }
}

@media (max-width: 480px) {
  .kpi-grid {
    grid-template-columns: 1fr;
  }

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