/* ==========================================================================
   STAMPLOYAL MODERN ULTRA-PREMIUM DARK CSS THEME
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #09090b;
  --bg-card: #18181b;
  --bg-card-hover: #27272a;
  --border: #27272a;
  --border-hover: #3f3f46;
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-orange: #f59e0b;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 6px;
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Hide elements utility */
.hidden {
  display: none !important;
}

/* Layout Utilities */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* Buttons */
.btn {
  font-family: var(--font-family);
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.btn-primary {
  background-color: #ffffff;
  color: #0a0a0a;
  border-color: #ffffff;
}
.btn-primary:hover {
  background-color: #e5e5e5;
  border-color: #e5e5e5;
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
}

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

.btn-danger {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--accent-red);
  border-color: rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
  background-color: var(--accent-red);
  color: #ffffff;
  border-color: var(--accent-red);
}

.btn-success {
  background-color: rgba(34, 197, 94, 0.1);
  color: var(--accent-green);
  border-color: rgba(34, 197, 94, 0.2);
}
.btn-success:hover {
  background-color: var(--accent-green);
  color: #ffffff;
  border-color: var(--accent-green);
}

.btn-full {
  width: 100%;
}

.btn-large {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

/* Badges (Uppercase 11px text, background 15% opacity with matching text color) */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-badge);
  letter-spacing: 0.05em;
}

.badge-blue {
  background-color: rgba(74, 144, 217, 0.15);
  color: var(--accent-blue);
}

.badge-green {
  background-color: rgba(34, 197, 94, 0.15);
  color: var(--accent-green);
}

.badge-red {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
}

.badge-orange {
  background-color: rgba(249, 115, 22, 0.15);
  color: var(--accent-orange);
}

/* Inputs and Forms */
.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.9rem;
  padding: 0.75rem 1rem;
  width: 100%;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--border-hover);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.05);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Password input wrapper with eye toggle icon */
.password-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.password-wrapper input {
  padding-right: 2.75rem !important;
}

.password-toggle-btn {
  position: absolute;
  right: 0.875rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  transition: var(--transition);
  z-index: 10;
}

.password-toggle-btn:hover {
  color: var(--text-primary);
}

/* Cards & Containers */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  position: relative;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-hover);
}

/* ==========================================================================
   PORTAL LOGIN SCREEN (auth-screen)
   ========================================================================== */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
  width: 100%;
}

.auth-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  max-width: 440px;
  width: 100%;
  padding: 2.5rem;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-top: 0.5rem;
  letter-spacing: -0.02em;
}

.auth-header .subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.auth-toggle-text {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 1.5rem;
  text-align: center;
}

.auth-toggle-text a {
  color: var(--text-primary);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--border-hover);
  transition: var(--transition);
}

.auth-toggle-text a:hover {
  border-bottom-color: var(--text-primary);
}

/* ==========================================================================
   APP HEADER & NAVIGATION
   ========================================================================== */
.app-header {
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.logo-box {
  background-color: #ffffff;
  color: #09090b;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-badge);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.logo-icon-black {
  width: 18px;
  height: 18px;
  color: #09090b;
}

.shop-logo-box {
  width: 38px;
  height: 38px;
  background-color: #ffffff;
  border-radius: var(--radius-badge);
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-logo-icon {
  width: 22px;
  height: 22px;
  color: #09090b;
}

.logo-text {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Status Indicator */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  background-color: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.15);
  border-radius: 20px;
  color: var(--accent-green);
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.1); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

/* Main Dashboard Tab Navigation */
.dashboard-nav {
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-card);
}

.nav-container {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-family);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 1rem 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.tab-btn.active {
  color: var(--text-primary);
  border-bottom-color: #ffffff;
}

/* Main Content Area */
.main-content {
  flex: 1;
  padding: 2rem 0;
}

/* ==========================================================================
   TAB 1: TERMINAL (Main Stamp Screen)
   ========================================================================== */
.terminal-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

.issue-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.terminal-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

/* Customer Display Panel (Right side) */
.customer-display-wrapper {
  position: sticky;
  top: 88px;
}

.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.empty-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--bg-card-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.empty-state h4 {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.empty-state p {
  font-size: 0.875rem;
  max-width: 280px;
}

/* Loaded Customer card details */
.customer-card-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.25rem;
}

.customer-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.customer-info .phone {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.125rem;
}

/* Stamp Dots Grid visualization */
.stamps-visualization {
  margin-bottom: 1.5rem;
}

.stamps-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.stamps-header .ratio {
  color: var(--accent-green);
  font-size: 0.9rem;
}

.stamps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.stamp-dot {
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px dashed var(--border-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  position: relative;
}

.stamp-dot.filled {
  border-style: solid;
  border-color: var(--accent-green);
  background-color: rgba(34, 197, 94, 0.1);
  color: var(--accent-green);
}

.stamp-dot.filled::after {
  content: '✓';
  font-size: 1.25rem;
  font-weight: 700;
}

.customer-stats {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.customer-stats span strong {
  color: var(--text-primary);
}

.customer-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Reward Notification Overlay in card */
.reward-banner {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.22) 0%, rgba(16, 185, 129, 0.08) 100%);
  border: 2px solid var(--accent-green);
  box-shadow: 0 8px 32px rgba(34, 197, 94, 0.15);
  border-radius: var(--radius-card);
  padding: 2rem 1.5rem;
  text-align: center;
  margin-top: 1.5rem;
  position: relative;
  overflow: hidden;
  animation: bounceIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes bounceIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.reward-icon-container {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.2);
  color: var(--accent-green);
  margin-bottom: 1rem;
  animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.reward-glow-icon {
  width: 28px;
  height: 28px;
}

.reward-headline {
  color: var(--accent-green) !important;
  font-size: 1.25rem !important;
  font-weight: 800 !important;
  margin-bottom: 0.5rem !important;
  line-height: 1.4 !important;
  text-shadow: 0 2px 10px rgba(34, 197, 94, 0.1);
}

.reward-subtext {
  font-size: 0.95rem !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin-bottom: 1.25rem !important;
  opacity: 0.9;
}

/* Confirmation alerts */
.stamp-confirmed {
  background-color: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  color: var(--accent-green);
  border-radius: var(--radius-btn);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  animation: fadeIn 0.25s ease;
}

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

/* ==========================================================================
   TAB 2: CUSTOMERS
   ========================================================================== */
.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.view-title-area h2 {
  font-size: 1.5rem;
  font-weight: 700;
}

.view-title-area .view-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.search-bar {
  max-width: 320px;
  width: 100%;
  position: relative;
}

.search-bar input {
  padding-left: 2.5rem !important;
}

.search-icon-inside {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Modern tables */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  background-color: var(--bg-card);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.data-table th {
  background-color: #161616;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 1rem 1.25rem;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.data-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.data-table tbody tr {
  cursor: pointer;
  transition: var(--transition);
}

.data-table tbody tr:hover {
  background-color: var(--bg-card-hover);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.bold-accent {
  font-weight: 600;
  color: var(--accent-blue);
}

/* Slide-in drawer for customer logs */
.slide-drawer {
  position: fixed;
  top: 0;
  right: -420px;
  width: 420px;
  height: 100vh;
  background-color: var(--bg-card);
  border-left: 1px solid var(--border);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.6);
  z-index: 200;
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 2rem;
  display: flex;
  flex-direction: column;
}

.slide-drawer.open {
  right: 0;
}

.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  z-index: 199;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.drawer-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
}

.drawer-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  transition: var(--transition);
}

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

.drawer-content {
  flex: 1;
  overflow-y: auto;
}

.history-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding-left: 0.5rem;
  position: relative;
}

.history-timeline::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background-color: var(--border);
}

.timeline-item {
  display: flex;
  gap: 1rem;
  position: relative;
}

.timeline-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--border);
  border: 2px solid var(--bg-card);
  z-index: 2;
  margin-top: 4px;
}

.timeline-dot.stamp_added {
  background-color: var(--accent-blue);
  box-shadow: 0 0 6px var(--accent-blue);
}

.timeline-dot.reward_redeemed {
  background-color: var(--accent-green);
  box-shadow: 0 0 6px var(--accent-green);
}

.timeline-dot.stamp_undone {
  background-color: var(--accent-orange);
  box-shadow: 0 0 6px var(--accent-orange);
}

.timeline-body {
  flex: 1;
}

.timeline-title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.timeline-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.125rem;
}

/* ==========================================================================
   TAB 3: ACTIVITY LOG
   ========================================================================== */
.filter-pills {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.pill-btn {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 20px;
  padding: 0.375rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.pill-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.pill-btn.active {
  background-color: #ffffff;
  color: #0a0a0a;
  border-color: #ffffff;
}

.activity-list {
  display: flex;
  flex-direction: column;
}

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

.activity-row:last-child {
  border-bottom: none;
}

.activity-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.activity-details {
  display: flex;
  flex-direction: column;
}

.activity-name {
  font-weight: 500;
  font-size: 0.9rem;
}

.activity-phone {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

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

/* ==========================================================================
   TAB 4: SETTINGS
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  padding: 1.25rem 1.5rem;
}

.stat-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  margin-top: 0.25rem;
  letter-spacing: -0.02em;
}

.toggle-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
}

.toggle-label-text {
  font-size: 0.875rem;
  font-weight: 500;
}

.switch-control {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch-control input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #222;
  transition: 0.2s;
  border-radius: 24px;
  border: 1px solid var(--border);
}

.switch-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: #fff;
  transition: 0.2s;
  border-radius: 50%;
}

.switch-control input:checked + .switch-slider {
  background-color: var(--accent-green);
  border-color: var(--accent-green);
}

.switch-control input:checked + .switch-slider:before {
  transform: translateX(20px);
}

/* ==========================================================================
   SUPER ADMIN PORTAL (admin.html)
   ========================================================================== */
.admin-metrics-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

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

.metric-green {
  color: var(--accent-green) !important;
}

.metric-red {
  color: var(--accent-red) !important;
}

/* ==========================================================================
   MODAL WINDOW DIALOGS
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  max-width: 520px;
  width: 100%;
  padding: 2rem;
  position: relative;
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.7);
  animation: modalPop 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalPop {
  from { transform: scale(0.9) translateY(10px); }
  to { transform: scale(1) translateY(0); }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.modal-body {
  margin-bottom: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* ==========================================================================
   TOAST NOTIFICATION COMPONENT
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 500;
}

.toast {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  padding: 0.875rem 1.25rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  transform: translateY(20px);
  opacity: 0;
  animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toastIn {
  to { transform: translateY(0); opacity: 1; }
}

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

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

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

/* Watermarks */
.watermark {
  position: fixed;
  bottom: 1rem;
  right: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.4;
  pointer-events: none;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ==========================================================================
   SUGGESTIONS DROPDOWN
   ========================================================================== */
.suggestions-container {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  margin-top: 0.25rem;
  max-height: 200px;
  overflow-y: auto;
  z-index: 100;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

.suggestion-item {
  padding: 0.75rem 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.suggestion-item:last-child {
  border-bottom: none;
}

.suggestion-item:hover,
.suggestion-item.active {
  background-color: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.suggestion-item .suggestion-phone {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.suggestion-item .suggestion-name {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==========================================================================
   THEME STYLES
   ========================================================================== */
/* 1. Light Theme */
html[data-theme="light"] {
  --bg-primary: #f5f5f7;
  --bg-card: #ffffff;
  --bg-card-hover: #fafafa;
  --border: #e5e5e7;
  --border-hover: #d2d2d7;
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-muted: #a1a1a6;
  --accent-blue: #0071e3;
  --accent-green: #1d803c;
  --accent-red: #d11a2a;
  --accent-orange: #f56300;
}

/* Theme Dropdown UI Component */
.theme-selector-container {
  position: relative;
  display: inline-block;
}

.theme-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  margin-top: 0.5rem;
  min-width: 170px;
  z-index: 1000;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

.theme-option {
  padding: 0.75rem 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  color: var(--text-primary);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.theme-option:last-child {
  border-bottom: none;
}

.theme-option:hover {
  background-color: var(--bg-card-hover);
}

.theme-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

/* ==========================================================================
   MOBILE RESPONSIVENESS (Media Query < 768px)
   ========================================================================== */
@media (max-width: 768px) {
  /* Terminal view columns stack vertically */
  .terminal-layout {
    grid-template-columns: 1fr;
  }
  
  .customer-display-wrapper {
    position: static;
  }
  
  /* Stats grid changes to 2x2 */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Admin metrics changes to 2 rows */
  .admin-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Header adjustments */
  .nav-container {
    overflow-x: auto;
    white-space: nowrap;
    gap: 1.5rem;
  }
  
  .tab-btn {
    padding: 0.75rem 0;
  }
  
  .slide-drawer {
    width: 100%;
    right: -100%;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

/* Extra small viewport optimizations (< 600px) */
@media (max-width: 600px) {
  /* Auth Screen Card padding */
  .auth-card {
    padding: 1.5rem 1.25rem;
  }

  /* Header structure layout stacking */
  .header-container {
    flex-direction: column;
    height: auto;
    padding: 1rem;
    gap: 0.75rem;
    align-items: stretch;
  }

  .header-left {
    justify-content: center;
  }

  .header-right {
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
  }

  /* Stats grid stacks vertically on very narrow screens */
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .admin-metrics-grid {
    grid-template-columns: 1fr;
  }
}