/* Re-engagement Room Core System Styles */
/* Extracted from inline styles - Phase 2 - December 9, 2025 */

/* ===== DARK MODE STYLES ===== */
.dark-mode body {
  --bg: linear-gradient(135deg, #1e1e2f 0%, #2d2d3f 100%);
  --card: #2d2d3f;
  --text: #e0e0e0;
  --text-light: #a0aec0;
  --text-muted: #718096;
  --border: #4a5568;
  --border-light: #2d3748;
}

.dark-mode .nav-bar {
  background: rgba(0, 48, 87, 0.85);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.dark-mode .theme-btn {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
}

.dark-mode .dropdown-content {
  background: #2c2c2c;
  border-color: var(--border);
}

.dark-mode .dropdown-content a, 
.dark-mode .dropdown-content button {
  color: #ffffff;
}

.dark-mode .dropdown-content a:hover, 
.dark-mode .dropdown-content button:hover {
  background: var(--border-light);
}

.dark-mode .container {
  background: var(--card);
  border-color: var(--border);
}

.dark-mode .header-section {
   background: linear-gradient(135deg, var(--nav-bg) 0%, #004060 100%);
}

.dark-mode .loading-status {
  background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
  border-color: #4a5568;
  color: #e2e8f0;
}

.dark-mode .tab-navigation {
  background: var(--border-light);
  border-bottom-color: var(--border);
}

.dark-mode .tab-btn {
  color: var(--text-light);
}

.dark-mode .tab-btn:hover {
  background: rgba(102,0,0,0.15);
  color: var(--accent);
}

.dark-mode .tab-btn.active {
  background: var(--card);
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.dark-mode .form-group input, 
.dark-mode .form-group select, 
.dark-mode .form-group textarea,
.dark-mode .form-input, 
.dark-mode .form-select {
  background: var(--border-light);
  border-color: var(--border);
  color: var(--text);
}

.dark-mode .form-group input:focus, 
.dark-mode .form-group select:focus, 
.dark-mode .form-group textarea:focus,
.dark-mode .form-input:focus, 
.dark-mode .form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(126, 42, 42, 0.2);
}

.dark-mode .student-dropdown {
  background: var(--card);
  border-color: var(--border);
}

.dark-mode .student-option:hover {
  background: var(--border-light);
}

.dark-mode .student-id {
  background: var(--border-light);
  color: var(--text-muted);
}

.dark-mode .type-option {
  border-color: var(--border);
  background: var(--card);
}

.dark-mode .type-option:hover {
  border-color: var(--accent);
  background: rgba(102,0,0,0.1);
}

.dark-mode .type-option.selected {
  border-color: var(--accent);
  background: rgba(102,0,0,0.1);
}

.dark-mode .student-info {
  background: var(--border-light);
  border-color: var(--border);
}

.dark-mode .student-photo img {
  border-color: var(--card);
}

.dark-mode .history {
  background: var(--card);
  border-color: var(--border);
}

.dark-mode .history h3 {
  background: var(--accent);
}

.dark-mode .history-item:hover {
  background: var(--border-light);
}

.dark-mode .footer {
  border-top-color: var(--border);
  color: var(--text-muted);
}

.dark-mode .footer a {
  color: var(--nav-fg);
}

.dark-mode .footer a:hover {
  color: var(--accent);
}

.dark-mode .master-list-table th {
  background: var(--nav-bg);
}

.dark-mode .master-list-table th.sorted-asc,
.dark-mode .master-list-table th.sorted-desc {
  background: #004a73;
}

.dark-mode .master-list-table th.sorted-asc::after,
.dark-mode .master-list-table th.sorted-desc::after {
  color: #bee3f8;
}

.dark-mode .master-list-table tr:nth-child(even) {
  background: var(--border-light);
}

.dark-mode .master-list-table tr:hover {
  background: #384252;
}

.dark-mode .admin-section-header {
   background: var(--nav-bg);
}

.dark-mode .admin-section-content {
  background: var(--card);
  border-color: var(--border);
}

.dark-mode .step-email-table th {
  background: var(--border-light);
  border-bottom-color: var(--border);
  color: var(--text);
}

.dark-mode .step-email-table tr:hover {
  background: #384252;
}

.dark-mode .warning-banner {
  background: linear-gradient(135deg, #4a3a1f 0%, #5e4a2b 100%);
  border-color: var(--warning);
  color: #ffe0b2;
}

.dark-mode .warning-banner.danger {
  background: linear-gradient(135deg, #5c2323 0%, #782f2f 100%);
  border-color: var(--danger);
  color: #fecaca;
}

/* ===== CSS CUSTOM PROPERTIES (DESIGN TOKENS) ===== */
:root { 
  --nav-bg: #003057; 
  --nav-fg: #fff; 
  --bg: linear-gradient(135deg, #fbecec 0%, #f8fafc 100%); 
  --card: #ffffff; 
  --accent: #660000; 
  --accent-light: #7f1d1d;
  --accent-dark: #450a0a;
  --primary: #0066cc;
  --primary-light: #3b82f6;
  --text: #2c2c2c;
  --text-light: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --success: #059669;
  --success-light: #10b981;
  --warning: #d97706;
  --warning-light: #f59e0b;
  --danger: #dc2626;
  --danger-light: #ef4444;
  --info: #0284c7;
  --info-light: #06b6d4;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --nav-height: 64px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

/* ===== MODERN KEYFRAME ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translateY(0);
  }
  40%, 43% {
    transform: translateY(-8px);
  }
  70% {
    transform: translateY(-4px);
  }
  90% {
    transform: translateY(-2px);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-2px); }
  20%, 40%, 60%, 80% { transform: translateX(2px); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===== PROGRESS BAR COMPONENTS ===== */
.progress-bar-container {
  width: 100%;
  height: 4px;
  background: var(--border-light);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--primary), var(--accent));
  background-size: 200% 100%;
  border-radius: 4px;
  transition: width 0.3s ease;
  animation: progressShimmer 2s ease-in-out infinite;
  box-shadow: 0 0 10px rgba(102,0,0,0.5);
}

@keyframes progressShimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.progress-bar.indeterminate {
  width: 30% !important;
  animation: progressIndeterminate 1.5s ease-in-out infinite, progressShimmer 2s ease-in-out infinite;
}

@keyframes progressIndeterminate {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(400%);
  }
}

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

body { 
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', sans-serif;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #f5f7fa 100%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  font-size: 14px;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
              radial-gradient(circle at 80% 70%, rgba(147, 51, 234, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%239C92AC" fill-opacity="0.02"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ===== ENHANCED NAVIGATION ===== */
.nav-bar { 
  display: flex; 
  align-items: center; 
  background: var(--nav-bg); 
  color: var(--nav-fg); 
  padding: 12px 24px; 
  position: sticky; 
  top: 0; 
  z-index: 1000;
  box-shadow: var(--shadow);
  height: var(--nav-height);
  backdrop-filter: blur(10px);
}

.nav-logo { 
  height: 40px; 
  margin-right: 16px;
  transition: var(--transition);
}

.nav-logo:hover {
  transform: scale(1.05);
}

.nav-title { 
  font-size: 1.4em; 
  font-weight: 600;
  margin-right: auto;
  color: var(--nav-fg);
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.nav-links { 
  display: flex; 
  align-items: center; 
  gap: 16px;
}

#staffName { 
  font-weight: 600; 
  color: rgba(255,255,255,0.9);
  font-size: 0.95em;
}

.theme-btn {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--nav-fg);
  font-size: 1.2em;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.theme-btn:hover {
  background: rgba(255,255,255,0.2);
  transform: rotate(180deg);
}

/* ===== DROPDOWN MENUS ===== */
.dropdown { 
  position: relative; 
}

.dropbtn { 
  background: rgba(255,255,255,0.1); 
  color: var(--nav-fg); 
  border: 1px solid rgba(255,255,255,0.2);
  padding: 8px 16px; 
  border-radius: 8px; 
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.dropbtn:hover { 
  background: rgba(255,255,255,0.2); 
  transform: translateY(-1px);
}

.dropdown-content { 
  display: none; 
  position: absolute; 
  right: 0; 
  background: var(--nav-bg) !important;
  min-width: 220px; 
  box-shadow: var(--shadow-lg); 
  border-radius: var(--border-radius);
  overflow: hidden; 
  border: 1px solid var(--border); 
  z-index: 10001; 
  padding-top: 8px;
  animation: fadeIn 0.2s ease-in-out;
  max-width: calc(100vw - 20px);
  left: auto;
  transform: none;
}

.dropdown:hover .dropdown-content,
.dropdown-content:hover {
  display: block;
}

.dropdown-content a, 
.dropdown-content button { 
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px; 
  text-decoration: none; 
  color: var(--nav-fg); 
  background: none; 
  border: none; 
  width: 100%; 
  text-align: left; 
  cursor: pointer;
  font-size: 0.95em;
  font-weight: 500;
  transition: var(--transition);
}

.dropdown-content a:hover, 
.dropdown-content button:hover { 
  background: rgba(0,48,87,0.08); 
  transform: translateX(4px);
}

.dropdown-content a.active {
  background-color: #f0f0f0;
  color: var(--accent);
  font-weight: 600;
  pointer-events: none;
}

.dropdown-content.show {
  display: block;
  animation: fadeInUp 0.2s ease;
}

/* ===== RESPONSIVE DROPDOWN POSITIONING ===== */
@media (max-width: 400px) {
  .dropdown-content {
    right: 5px;
    min-width: 200px;
    max-width: calc(100vw - 10px);
  }
}

@media (max-width: 320px) {
  .dropdown-content {
    right: 5px;
    min-width: 180px;
    max-width: calc(100vw - 10px);
  }
}

@media (max-width: 280px) {
  .dropdown-content {
    position: fixed;
    right: 5px;
    top: 50px;
    min-width: 160px;
    max-width: calc(100vw - 10px);
  }
}