/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
  --font-primary: 'Inter', sans-serif;
  --font-headers: 'Outfit', sans-serif;
  
  /* Color Palette - Elegant Dark Theme */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  
  --glass-bg: rgba(17, 24, 39, 0.65);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-shadow: rgba(0, 0, 0, 0.4);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --color-primary: #6366f1; /* Indigo */
  --color-primary-hover: #4f46e5;
  --color-secondary: #3b82f6; /* Blue */
  --color-success: #10b981; /* Emerald */
  --color-danger: #ef4444; /* Rose */
  --color-warning: #f59e0b; /* Amber */
  --color-purple: #8b5cf6; /* Violet */
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-full: 9999px;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headers);
  font-weight: 700;
  letter-spacing: -0.025em;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

a:hover {
  color: var(--color-primary-hover);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ==========================================================================
   UTILITY CLASSES & GLASSMORPHISM
   ========================================================================== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px 0 var(--glass-shadow);
}

.screen {
  display: none !important;
}

.screen.active {
  display: flex !important;
}

#dashboard-screen.active {
  display: flex !important;
}

.hidden {
  display: none !important;
}

/* Helper Visibility Classes (Desktop by default) */
.mobile-only {
  display: none !important;
}
.desktop-only {
  display: block !important;
}
tr.desktop-only {
  display: table-row !important;
}

.text-right {
  text-align: right;
}

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

.pulse-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-success);
  border-radius: 50%;
  margin-right: 6px;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--border-radius-md);
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-purple));
  color: #fff;
  box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: #374151;
  transform: translateY(-1px);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
  padding: 6px 12px;
  font-size: 0.85rem;
}

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

.btn-logout {
  background: rgba(239, 68, 68, 0.1);
  color: #fca5a5;
  width: 100%;
  border: 1px solid rgba(239, 68, 68, 0.15);
}

.btn-logout:hover {
  background: rgba(239, 68, 68, 0.25);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   LOGIN SCREEN
   ========================================================================== */
#login-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  background-color: var(--bg-primary);
}

.login-background {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 40%);
  filter: blur(80px);
}

.login-card {
  width: 100%;
  max-width: 440px;
  padding: 40px;
  border-radius: var(--border-radius-lg);
  position: relative;
  z-index: 10;
  animation: fadeInDown 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-logo {
  text-align: center;
  margin-bottom: 30px;
}

.login-logo .logo-icon {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 10px;
}

.login-logo h1 {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(to right, #fff, #a5b4fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-logo p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 4px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.form-group input, .form-group select {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  transition: var(--transition-smooth);
}

.form-group input:focus, .form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.alert {
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
}

.alert-danger {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

/* ==========================================================================
   DASHBOARD SCREEN & SIDEBAR
   ========================================================================== */
#dashboard-screen {
  display: flex;
  min-height: 100vh;
  background-color: var(--bg-primary);
}

/* Sidebar Styling */
.sidebar {
  width: 280px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 100;
}

.sidebar-brand {
  padding: 30px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-brand .logo-icon {
  font-size: 1.8rem;
  color: var(--color-primary);
}

.sidebar-brand h2 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.sidebar-menu {
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition-smooth);
}

.menu-item:hover, .menu-item.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}

.menu-item.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.05));
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.sidebar-footer {
  padding: 24px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-footer .user-info h4 {
  font-size: 1rem;
  font-weight: 600;
}

.sidebar-footer .user-info p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Main Content Wrapper */
.main-content {
  flex-grow: 1;
  padding: 40px;
  overflow-y: auto;
  height: 100vh;
}

/* Main Header */
.main-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
}

.main-header h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.main-header p {
  color: var(--text-secondary);
}

.header-meta .meta-item {
  padding: 8px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  font-size: 0.9rem;
}

.header-meta .meta-item .label {
  color: var(--text-secondary);
  margin-right: 6px;
}

.header-meta .meta-item .value {
  font-weight: 600;
  color: var(--color-primary);
}

/* ==========================================================================
   STATS CARDS
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.stat-card {
  border-radius: var(--border-radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.stat-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.icon-blue {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-secondary);
}

.icon-purple {
  background: rgba(139, 92, 246, 0.15);
  color: var(--color-purple);
}

.icon-green {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.stat-info {
  flex-grow: 1;
}

.stat-info h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.stat-info .value {
  font-size: 1.8rem;
  font-weight: 700;
}

.stat-info .limit {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.stat-info .desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-active {
  color: var(--color-success);
  display: inline-flex;
  align-items: center;
  font-size: 1.2rem;
  font-weight: 700;
}

.progress-bar-container {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-full);
  margin-top: 10px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  border-radius: var(--border-radius-full);
  transition: width 1s ease-in-out;
}

/* ==========================================================================
   MAILBOX TABLE
   ========================================================================== */
.mailbox-section {
  border-radius: var(--border-radius-lg);
  padding: 30px;
}

.mailbox-section .section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.mailbox-section .section-header h2 {
  font-size: 1.3rem;
  font-weight: 700;
}

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

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

.mailbox-table th, .mailbox-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--glass-border);
}

.mailbox-table th {
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.mailbox-table tbody tr {
  transition: var(--transition-smooth);
}

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

.mailbox-table td {
  font-size: 0.95rem;
}

.mailbox-table td .email-addr {
  font-weight: 600;
  color: #fff;
}

.mailbox-table td .usage-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mailbox-table td .usage-bar {
  width: 120px;
}

.mailbox-table td .status-badge {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: var(--border-radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.table-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.btn-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.03);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

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

.btn-icon.delete:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.3);
}

.loading-row {
  text-align: center;
}

.loading-row td {
  padding: 40px;
  color: var(--text-secondary);
}

/* ==========================================================================
   GUIDE TAB
   ========================================================================== */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

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

.guide-container {
  border-radius: var(--border-radius-lg);
  padding: 30px;
}

.guide-header {
  margin-bottom: 30px;
}

.guide-header h2 {
  font-size: 1.4rem;
  margin-bottom: 6px;
}

.guide-header p {
  color: var(--text-secondary);
}

.guide-settings-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  margin-bottom: 30px;
}

.guide-settings-box h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.setting-item .label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.setting-item .value {
  font-size: 1rem;
  font-weight: 600;
}

.copyable {
  cursor: pointer;
  position: relative;
  transition: var(--transition-smooth);
}

.copyable:hover {
  color: #fff;
}

/* Sub-guide tabs */
.guide-tabs-container {
  margin-top: 30px;
}

.guide-tabs-nav {
  display: flex;
  gap: 10px;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 1px;
  margin-bottom: 24px;
}

.guide-tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 12px 20px;
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.guide-tab-btn:hover, .guide-tab-btn.active {
  color: #fff;
}

.guide-tab-btn.active {
  border-color: var(--color-primary);
}

.guide-pane {
  display: none;
}

.guide-pane.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.guide-pane ol {
  padding-left: 20px;
}

.guide-pane li {
  margin-bottom: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.guide-pane li strong {
  color: #fff;
}

/* ==========================================================================
   MODAL DIALOG
   ========================================================================== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal.active {
  display: flex;
}

.modal-content {
  width: 100%;
  max-width: 500px;
  border-radius: var(--border-radius-lg);
  padding: 30px;
  animation: modalScaleUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.close-modal-btn {
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.close-modal-btn:hover {
  color: #fff;
}

.input-email-wrapper, .input-password-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.input-email-wrapper input {
  flex-grow: 1;
}

.email-domain-suffix {
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.04);
  padding: 12px 16px;
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
}

.input-password-wrapper input {
  flex-grow: 1;
}

.help-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.password-strength-meter {
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-full);
  margin-top: 8px;
  overflow: hidden;
}

.strength-bar {
  height: 100%;
  width: 0;
  border-radius: var(--border-radius-full);
  transition: var(--transition-smooth);
}

.strength-weak { width: 33%; background-color: var(--color-danger); }
.strength-medium { width: 66%; background-color: var(--color-warning); }
.strength-strong { width: 100%; background-color: var(--color-success); }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 30px;
}

/* ==========================================================================
   AI FLOATING CHATBOT WIDGET
   ========================================================================== */
#ai-chat-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
}

.ai-bubble {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-purple));
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
  transition: var(--transition-smooth);
  position: relative;
}

.ai-bubble:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.6);
}

.ai-bubble .tooltip {
  position: absolute;
  right: 75px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  padding: 8px 12px;
  border-radius: var(--border-radius-md);
  font-size: 0.85rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateX(10px);
  transition: var(--transition-smooth);
  color: var(--text-primary);
}

.ai-bubble:hover .tooltip {
  opacity: 1;
  transform: translateX(0);
}

.ai-bubble.show-tooltip .tooltip {
  opacity: 1 !important;
  transform: translateX(0) !important;
  pointer-events: auto !important;
}

.ai-bubble.show-tooltip {
  transform: scale(1.1) rotate(5deg) !important;
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.6) !important;
}

.chat-window {
  width: 460px;
  height: 600px;
  max-width: calc(100vw - 40px);
  max-height: calc(100vh - 120px);
  border-radius: var(--border-radius-lg);
  display: none;
  flex-direction: column;
  position: absolute;
  bottom: 80px;
  right: 0;
  transform-origin: bottom right;
  animation: modalScaleUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
  transition: width 0.3s ease, height 0.3s ease, max-width 0.3s ease, max-height 0.3s ease;
}

.chat-window.maximized {
  width: 800px;
  height: 750px;
  max-width: calc(100vw - 40px);
  max-height: calc(100vh - 120px);
}

.chat-window.active {
  display: flex;
}

.chat-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(17, 24, 39, 0.4);
}

.chat-header-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-header-title .icon-ai {
  font-size: 1.5rem;
  color: var(--color-primary);
}

.chat-header-title h3 {
  font-size: 0.95rem;
  font-weight: 700;
}

.chat-header-title p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.chat-header-btn {
  background: none;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-header-btn:hover {
  color: #fff;
  transform: scale(1.1);
}

.close-chat {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.close-chat:hover {
  color: #fff;
}

.chat-messages {
  flex-grow: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  font-size: 0.9rem;
  line-height: 1.5;
  word-wrap: break-word;
}

.message strong {
  font-weight: 700;
  color: inherit;
}

.message em {
  font-style: italic;
  color: inherit;
}

.message br {
  margin-bottom: 6px;
}

.message.system {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 2px;
}

.message.user {
  background: var(--color-primary);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 2px;
}

.message.loading {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  align-self: flex-start;
  font-style: italic;
}

.chat-input-area {
  padding: 12px 16px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  align-items: flex-end;
  gap: 10px;
  background: rgba(17, 24, 39, 0.4);
}

.chat-input-area textarea {
  flex-grow: 1;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 10px 12px;
  font-size: 0.85rem;
  color: var(--text-primary);
  resize: none;
  font-family: inherit;
  height: 38px;
  max-height: 150px;
  overflow-y: auto;
  line-height: 1.4;
  box-sizing: border-box;
  transition: border-color 0.2s ease;
}

.chat-input-area textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.btn-send {
  background: var(--color-primary);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-send:hover {
  background: var(--color-primary-hover);
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */
.toast {
  position: fixed;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(16, 185, 129, 0.95);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--border-radius-full);
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  z-index: 2000;
  transition: var(--transition-smooth);
}

.toast.toast-error {
  background: rgba(239, 68, 68, 0.95);
  box-shadow: 0 10px 25px rgba(239, 68, 68, 0.3);
}

.toast.hidden {
  opacity: 0;
  transform: translate(-50%, -20px);
  pointer-events: none;
}

/* ==========================================================================
   WEBMAIL & QUOTA VISUALIZER GRID
   ========================================================================== */
.mailbox-layout-container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-top: 24px;
  align-items: start;
}

@media (max-width: 992px) {
  .mailbox-layout-container {
    grid-template-columns: 1fr;
  }
}

.visualizer-legend-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.04);
  font-size: 13px;
  transition: var(--transition-smooth);
}

.visualizer-legend-item:hover {
  background: rgba(255,255,255,0.05);
  transform: translateX(2px);
}

.visualizer-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 8px;
}

.visualizer-legend-label {
  display: flex;
  align-items: center;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.visualizer-legend-value {
  color: var(--text-secondary);
  font-family: monospace;
}

/* Select Option Dark/Light Styling */
select option {
  background-color: var(--bg-secondary) !important;
  color: var(--text-primary) !important;
}

/* Light Theme Variables */
body.light-theme {
  --bg-primary: #f1f5f9;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e2e8f0;
  
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-shadow: rgba(15, 23, 42, 0.05);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  --color-primary: #4f46e5;
  --color-primary-hover: #3730a3;
}

/* Light Theme Component Overrides */
body.light-theme input,
body.light-theme textarea,
body.light-theme select {
  background-color: #ffffff !important;
  border-color: #cbd5e1 !important;
  color: #0f172a !important;
}

body.light-theme input::placeholder,
body.light-theme textarea::placeholder {
  color: #94a3b8 !important;
}

body.light-theme .menu-item:hover,
body.light-theme .menu-item.active {
  color: var(--color-primary) !important;
  background: rgba(79, 70, 229, 0.08) !important;
}

body.light-theme .mailbox-table td .email-addr {
  color: var(--text-primary) !important;
}

body.light-theme .visualizer-legend-item:hover {
  background: rgba(0, 0, 0, 0.03) !important;
}

body.light-theme .help-text {
  color: #64748b !important;
}

body.light-theme .btn-secondary {
  background: #f1f5f9 !important;
  border-color: #cbd5e1 !important;
  color: #475569 !important;
}

body.light-theme .btn-secondary:hover {
  background: #e2e8f0 !important;
}

body.light-theme .close-modal-btn:hover {
  color: #0f172a !important;
}

body.light-theme .btn-icon:hover {
  color: var(--text-primary) !important;
}

body.light-theme .copyable:hover,
body.light-theme .guide-tab-btn:hover,
body.light-theme .guide-tab-btn.active {
  color: var(--text-primary) !important;
}

body.light-theme .close-chat:hover {
  color: var(--text-primary) !important;
}

body.light-theme .chat-input-area {
  background: rgba(255, 255, 255, 0.8) !important;
}

body.light-theme .chat-input-area textarea {
  background: #ffffff !important;
  border: 1px solid #cbd5e1 !important;
  color: #0f172a !important;
}

/* Logo display rules based on active theme */
.logo-light-theme {
  display: none !important;
}
.logo-dark-theme {
  display: inline-block !important;
}

body.light-theme .logo-light-theme {
  display: inline-block !important;
}
body.light-theme .logo-dark-theme {
  display: none !important;
}

/* Force Light Theme on Login Screen */
#login-screen {
  background-color: #f1f5f9 !important;
  color: #0f172a !important;
}

#login-screen .login-background {
  background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 40%) !important;
}

#login-screen .login-card {
  background: rgba(255, 255, 255, 0.85) !important;
  border: 1px solid rgba(0, 0, 0, 0.08) !important;
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.08) !important;
  color: #0f172a !important;
}

#login-screen .login-logo p {
  color: #475569 !important;
}

#login-screen label {
  color: #475569 !important;
}

#login-screen input {
  background-color: #ffffff !important;
  border: 1px solid #cbd5e1 !important;
  color: #0f172a !important;
}

#login-screen input::placeholder {
  color: #94a3b8 !important;
}

#login-screen input:focus {
  border-color: var(--color-primary) !important;
}

#login-screen .input-password-wrapper button {
  background: #f1f5f9 !important;
  border: 1px solid #cbd5e1 !important;
  color: #475569 !important;
}

#login-screen .input-password-wrapper button:hover {
  background: #e2e8f0 !important;
}

/* Force Light Logo on Login screen */
#login-screen .logo-light-theme {
  display: inline-block !important;
}
#login-screen .logo-dark-theme {
  display: none !important;
}

/* ==========================================================================
   MOBILE & TABLET RESPONSIVENESS (max-width: 1024px)
   ========================================================================== */
@media (max-width: 1024px) {
  /* Layout changes */
  #dashboard-screen,
  #admin-dashboard-screen {
    flex-direction: column;
  }

  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: -280px;
    width: 280px;
    height: 100vh;
    transition: var(--transition-smooth);
    box-shadow: 5px 0 25px rgba(0, 0, 0, 0.4);
    z-index: 200;
  }

  .sidebar.mobile-open {
    left: 0;
  }

  /* Backdrop for mobile drawer */
  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 150;
  }

  .sidebar-backdrop.active {
    display: block;
  }

  /* Main Content Adjustments */
  .main-content {
    padding: 20px !important;
    height: auto !important;
    overflow-y: visible !important;
    margin-top: 60px; /* Space for the fixed mobile header bar */
  }

  .main-header {
    flex-direction: column;
    align-items: flex-start !important;
    gap: 12px;
    margin-bottom: 24px !important;
  }

  .main-header .header-meta {
    align-self: flex-start;
  }

  /* Stats Grid */
  .stats-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
    margin-bottom: 24px !important;
  }

  .stat-card {
    padding: 16px !important;
  }

  /* Layout Containers */
  .mailbox-layout-container {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }

  .mailbox-section {
    padding: 20px !important;
  }

  .mailbox-section .section-header {
    flex-direction: column;
    align-items: flex-start !important;
    gap: 12px;
  }

  .mailbox-section .section-header .btn {
    width: 100%;
    margin-left: 0 !important;
  }

  /* Mobile Header Bar */
  .mobile-header-bar {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--glass-border);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    z-index: 140;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  }

  /* Table Responsiveness */
  .table-container {
    margin-left: -20px;
    margin-right: -20px;
    padding-left: 20px;
    padding-right: 20px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .mailbox-table th, .mailbox-table td {
    padding: 12px 14px !important;
  }

  /* Guide and settings tabs list */
  .guide-tabs-nav {
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 8px;
    margin-bottom: 16px;
    width: 100%;
    -webkit-overflow-scrolling: touch;
    display: flex;
    gap: 8px;
  }

  .guide-tab-btn {
    padding: 8px 12px !important;
    font-size: 13.5px !important;
    flex-shrink: 0;
  }

  .settings-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }

  /* Modal Dialog sizing */
  .modal-content {
    width: calc(100% - 32px) !important;
    padding: 20px !important;
    margin: 16px auto;
  }

  .modal-footer {
    flex-direction: column-reverse;
    gap: 10px;
  }

  .modal-footer .btn {
    width: 100%;
  }

  /* Inputs wrapping inside modals */
  .input-email-wrapper,
  .input-password-wrapper {
    flex-wrap: wrap;
    gap: 8px;
    width: 100%;
  }

  .input-email-wrapper input,
  .input-password-wrapper input {
    width: 100% !important;
    flex-grow: 1;
  }

  .email-domain-suffix {
    width: 100%;
    text-align: center;
  }

  .input-password-wrapper button {
    width: 100%;
  }

  /* AI Floating chatbot adjustments */
  #ai-chat-container {
    bottom: 20px;
    right: 20px;
  }

  .chat-window {
    width: calc(100vw - 32px);
    max-width: none;
    height: 500px;
    max-height: calc(100vh - 100px);
    bottom: 70px;
    right: 0;
  }

  .chat-window.maximized {
    width: calc(100vw - 32px);
    height: 500px;
  }

  /* Helper Visibility Classes (Mobile view) */
  .mobile-only {
    display: block !important;
  }
  .desktop-only {
    display: none !important;
  }
  tr.desktop-only {
    display: none !important;
  }

  /* Mobile Mailbox Card Styles */
  .mobile-mailbox-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 16px;
  }

  .mobile-mailbox-card {
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--glass-border);
    overflow: visible;
  }

  .mobile-mailbox-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--glass-border);
  }

  .mobile-mailbox-card .email-info {
    display: flex;
    align-items: center;
  }

  /* Mobile Actions Dropdown Menu */
  .mobile-actions-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    z-index: 100;
    min-width: 180px;
    overflow: hidden;
    padding: 4px 0;
  }

  .mobile-actions-dropdown.active {
    display: block;
    animation: fadeIn 0.15s ease;
  }

  .mobile-actions-dropdown .dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 12px 16px;
    background: none;
    border: none;
    color: var(--text-secondary);
    text-align: left;
    font-size: 13.5px;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-family: inherit;
  }

  .mobile-actions-dropdown .dropdown-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
  }

  .mobile-actions-dropdown .dropdown-item i {
    width: 16px;
    text-align: center;
  }

  /* Compact 2-column Grid for Quota visualizer list on mobile */
  .visualizer-legend {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 8px !important;
    max-height: none !important;
    overflow-y: visible !important;
  }

  .visualizer-legend-item {
    padding: 8px 12px !important;
    font-size: 12.5px !important;
  }
}