/* CRITICAL FIX - Text Colors on Cards */
.card,
.session-card,
.attendance-card,
.auth-card,
.modal-content,
.scanner-modal {
  background: var(--surface-solid); /* White glass */
  color: var(--text-on-glass); /* Dark text */
}

.card h2,
.card h3,
.card p,
.card label,
.card span,
.modal-content h2,
.modal-content p,
.auth-card h1,
.auth-card h2,
.auth-card p,
.auth-card label {
  color: var(--text-on-glass) !important; /* Force dark text */
}

/* Form inputs - dark text */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
  background: white;
  color: var(--text-on-glass);
  border: 2px solid var(--border-glass);
}

input::placeholder {
  color: var(--text-tertiary);
}

/* Navbar - keep white background with dark text */
.navbar {
  background: white;
  color: var(--text-on-glass);
}

.app-title,
.user-info,
.user-info div {
  color: var(--text-on-glass) !important;
}

/* Sidebar - white background, dark text */
.sidebar,
.student-sidebar {
  background: white;
  color: var(--text-on-glass);
}

.sidebar-item,
.sidebar-header h3,
.sidebar-section h4 {
  color: var(--text-on-glass);
}

/* Table text */
.attendance-table th {
  color: white; /* White text on dark header */
}

.attendance-table td {
  color: var(--text-on-glass); /* Dark text on white rows */
}

/* Session cards */
.session-card-title,
.session-card-date,
.session-card-info p {
  color: var(--text-on-glass) !important;
}

/* Attendance history */
.history-item-lecturer,
.history-item-details {
  color: var(--text-on-glass);
}

/* Buttons - keep good contrast */
.btn-primary {
  background: var(--ocean-blue);
  color: white;
}

.btn-secondary {
  background: var(--surface-glass);
  color: var(--text-primary);
  border: 2px solid var(--border-glass);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

/* Loading screen - dark background, white text */
#loadingScreen {
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* Form loading spinner - keep dark overlay */
#formLoadingSpinner {
  background: rgba(15, 23, 42, 0.8);
}

/* Status messages - fix text colors */
.error-message {
  background: var(--danger-bg);
  color: var(--danger);
}

.success-message {
  background: var(--seafoam-bg);
  color: var(--seafoam);
}

.geo-status {
  color: var(--text-on-glass);
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  color: #1f2937
}


:root {
  /* Modern Pink Palette - Vibrant & Professional */
  --primary-color: #be185d;        /* Rich pink */
  --primary-light: #db2777;        /* Bright pink */
  --primary-lighter: #f472b6;      /* Fresh pink */
  --primary-dark: #9d174d;         /* Deep pink */
  --secondary-color: #fce7f3;      /* Light pink background */
  --secondary-dark: #fbcfe8;       /* Light pink */
  --accent-color: #3b82f6;         /* Electric blue for CTAs */
  --accent-hover: #2563eb;         /* Darker blue hover */
  --success-color: #10b981;        /* Bright success pink */
  --danger-color: #ef4444;         /* Vibrant red */
  --warning-color: #f59e0b;        /* Amber warning */
  --light-bg: #ffffff;             /* Pure white */
  --card-bg: #f9fafb;              /* Subtle gray for cards */
  --dark-text: #111827;            /* True dark */
  --medium-text: #6b7280;          /* Secondary text */
  --border-color: #e5e7eb;         /* Modern gray border */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px 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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-primary: linear-gradient(135deg, #db2777 0%, #f472b6 100%);
  --gradient-hero: linear-gradient(135deg, #be185d 0%, #db2777 50%, #f472b6 100%);
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.2);
}

html {
  background: url('/assets/gradient-bg.webp');
  background-attachment: fixed;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  background: transparent;
  color: var(--dark-text);
  min-height: 100vh;
  line-height: 1.6;
  font-weight: 400;
}

/* Modern Button Styles */
.btn, button[type="submit"], .primary-btn {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  letter-spacing: 0.3px;
}

.btn:hover, button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

/* Secondary button */
.btn-secondary {
  background: white;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

/* Accent button (for CTAs) */
.btn-accent {
  background: var(--accent-color);
  color: white;
}

.btn-accent:hover {
  background: var(--accent-hover);
}

/* Modern Cards */
.card, .session-card, .attendance-card {
  background: white;
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

/* Glass card variant */
.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
}

/* Modern Inputs */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  transition: var(--transition);
  background: white;
  color: var(--dark-text);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1);
}

input::placeholder {
  color: var(--medium-text);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.badge-success {
  background: #fbcfe8;
  color: #be185d;
}

.badge-warning {
  background: #fef3c7;
  color: #92400e;
}

.badge-danger {
  background: #fee2e2;
  color: #991b1b;
}

.badge-info {
  background: #dbeafe;
  color: #1e40af;
}

/* Loading Spinner Improvements */
.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--secondary-dark);
  border-top: 3px solid var(--primary-light);
  border-radius: 50%;
  animation: spin 0.8s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

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


/* ===================== */
/* Loading Screen        */
/* ===================== */

#loadingScreen {
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(245, 241, 232, 0.95);
  z-index: 9999;
}

#loadingScreen.hidden {
  display: none;
}

.loading-screen-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(190, 24, 93, 0.15);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

#formLoadingSpinner {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.2);
  width: 100%;
  height: 100%;
}

#formLoadingSpinner .spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(190, 24, 93, 0.1);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  background: white;
  box-shadow: var(--shadow-md);
  padding: 16px;
}

/* ===================== */
/* Role Gateway          */
/* ===================== */

#roleGateway {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
  text-align: center;
  background: var(--light-bg);
}

#roleGateway.hidden {
  display: none;
}

.role-gateway-title {
  color: var(--primary-color);
  font-size: clamp(28px, 8vw, 42px);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.role-gateway-subtitle {
  color: var(--dark-text);
  font-size: clamp(16px, 4vw, 18px);
  margin-bottom: 50px;
  opacity: 0.7;
  font-weight: 400;
}

.role-buttons-container {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  max-width: 700px;
}

.btn-role {
  background: white;
  border: 2px solid var(--border-color);
  border-radius: 16px;
  padding: 40px 30px;
  min-width: 200px;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  flex: 1;
}

.btn-role:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
}

.btn-role-icon {
  font-size: 48px;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
}

.btn-student .btn-role-icon {
  background: rgba(220, 38, 38, 0.1);
  color: var(--primary-light);
}

.btn-lecturer .btn-role-icon {
  background: rgba(190, 24, 93, 0.1);
  color: var(--primary-color);
}

.btn-role h3 {
  font-size: 20px;
  color: #000000;
  margin: 0;
  font-weight: 600;
}

.btn-role p {
  font-size: 13px;
  color: #000000;
  margin: 0;
  opacity: 0.6;
}

.role-text {
  color: #000000 !important;
}

@media (max-width: 600px) {
  .role-buttons-container {
    flex-direction: column;
    gap: 16px;
  }
  
  .btn-role {
    min-width: 100%;
  }
}

/* ===================== */
/* Authentication Pages  */
/* ===================== */

.auth-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
  background: transparent;
  width: 100%;
  margin: 0 auto;
}

.auth-card {
  background: white;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 420px;
  padding: 48px 40px;
  animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.auth-header {
  text-align: center;
  margin-bottom: 32px;
}

.auth-header h1 {
  color: var(--primary-color);
  font-size: 32px;
  margin-bottom: 8px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.auth-header p {
  color: var(--dark-text);
  font-size: 13px;
  opacity: 0.6;
  font-weight: 400;
}

.form-section {
  display: none;
}

.form-section.active {
  display: block;
}

.form-section h2 {
  margin-bottom: 24px;
  color: var(--dark-text);
  font-size: 22px;
  font-weight: 600;
}

.form-back {
  display: inline-block;
  margin-bottom: 24px;
  padding: 8px 12px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--primary-color);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}

.form-back:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--dark-text);
  font-size: 13px;
  letter-spacing: 0.3px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  font-size: 14px;
  transition: var(--transition);
  background: var(--light-bg);
  color: var(--dark-text);
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  background: white;
  box-shadow: 0 0 0 3px rgba(190, 24, 93, 0.08);
}

.form-group input::placeholder {
  color: var(--dark-text);
  opacity: 0.4;
}

.form-group small {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--dark-text);
  opacity: 0.5;
}

.form-toggle {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--secondary-color);
}

.form-toggle a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}

.form-toggle a:hover {
  text-decoration: underline;
}

/* ===================== */
/* Buttons              */
/* ===================== */

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
  letter-spacing: 0.2px;
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: var(--primary-color);
  color: white;
  width: 100%;
}

.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background: var(--border-color);
  color: var(--dark-text);
}

.btn-secondary:hover {
  background: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-danger {
  background: var(--danger-color);
  color: white;
}

.btn-danger:hover {
  background: #c73a3a;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-success {
  background: var(--success-color);
  color: white;
}

.btn-success:hover {
  background: #229954;
}

.button-group {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.button-group .btn {
  flex: 1;
}

/* ===================== */
/* Dashboard Layout     */
/* ===================== */

.navbar {
  background: white;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 30px;
  max-width: 1400px;
  margin: 0 auto;
}

.app-title {
  font-size: 24px;
  color: var(--primary-color);
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 20px;
}

.user-info div {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  font-size: 14px;
}

.level-badge {
  background: rgba(190, 24, 93, 0.08);
  color: var(--primary-color);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  margin-top: 2px;
}

.main-container {
  max-width: 1400px;
  margin: 32px auto;
  padding: 0 20px;
}

.card {
  background: white;
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
  animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border-color);
}

.card h2 {
  margin-bottom: 24px;
  color: var(--dark-text);
  font-size: 24px;
  font-weight: 700;
}

.card h3 {
  margin: 24px 0 16px 0;
  color: var(--dark-text);
  font-size: 16px;
  font-weight: 600;
}

/* ===================== */
/* Messages & Alerts    */
/* ===================== */

/* ===================== */
/* Messages & Alerts    */
/* ===================== */

.error-message {
  background: rgba(216, 76, 76, 0.1);
  color: var(--danger-color);
  padding: 14px 16px;
  border-radius: 10px;
  margin-top: 16px;
  display: none;
  border-left: 4px solid var(--danger-color);
  font-size: 13px;
  font-weight: 500;
}

.success-message {
  background: rgba(190, 24, 93, 0.1);
  color: var(--primary-color);
  padding: 14px 16px;
  border-radius: 10px;
  margin-top: 16px;
  display: none;
  border-left: 4px solid var(--primary-color);
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  min-width: 280px;
  box-shadow: var(--shadow-md);
  font-size: 13px;
  font-weight: 500;
}

/* ===================== */
/* Loading Spinner      */
/* ===================== */

.loading-spinner {
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
}

.spinner {
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid white;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

.spinner-small {
  border: 3px solid rgba(52, 152, 219, 0.2);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  width: 25px;
  height: 25px;
  animation: spin 1s linear infinite;
  display: inline-block;
  margin-right: 10px;
}

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

/* ===================== */
/* Modal                */
/* ===================== */

.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.modal-content {
  background-color: white;
  padding: 30px;
  border-radius: 12px;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.3s ease;
}

.modal-content h2 {
  margin-bottom: 15px;
  color: var(--dark-text);
}

.modal-content p {
  margin-bottom: 10px;
  color: var(--secondary-color);
  line-height: 1.6;
}

.modal-content ul {
  margin-left: 20px;
  margin-bottom: 15px;
  color: var(--secondary-color);
}

.modal-buttons {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.modal-buttons .btn {
  flex: 1;
}

/* ===================== */
/* Lecturer Dashboard   */
/* ===================== */

.session-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.session-header h2 {
  margin: 0;
}

.session-header p {
  margin: 5px 0;
  color: var(--secondary-color);
  font-size: 14px;
}

.timer-display {
  text-align: center;
  background: var(--light-bg);
  padding: 20px;
  border-radius: 8px;
  min-width: 150px;
}

.timer {
  font-size: 48px;
  font-weight: bold;
  color: var(--primary-color);
  font-family: 'Courier New', monospace;
}

.timer-display p {
  margin-top: 10px;
  color: var(--secondary-color);
  font-size: 12px;
}

.qr-section {
  margin: 30px 0;
  padding: 20px;
  background: var(--light-bg);
  border-radius: 8px;
  text-align: center;
}

.qr-code-container {
  display: flex;
  justify-content: center;
  margin: 20px 0;
}

.qr-code-container div {
  display: inline-block;
}

.qr-code-container canvas {
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 10px;
  background: white;
}

.qr-code-container p {
  margin-top: 10px;
  color: var(--secondary-color);
  font-size: 14px;
}

.attendance-section {
  margin: 30px 0;
}

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

.attendance-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
}

.attendance-table thead {
  background: var(--light-bg);
}

.attendance-table th {
  padding: 12px;
  text-align: left;
  font-weight: 600;
  color: var(--dark-text);
  border-bottom: 2px solid var(--border-color);
}

.attendance-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border-color);
}

.attendance-table tr:hover {
  background: var(--light-bg);
}

/* ===================== */
/* Student Dashboard    */
/* ===================== */

.session-info {
  background: var(--light-bg);
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.session-info p {
  margin: 8px 0;
  font-size: 14px;
}

.session-info strong {
  color: var(--dark-text);
}

.no-session {
  text-align: center;
  padding: 40px 20px;
}

.no-session h2 {
  margin-bottom: 10px;
  color: var(--dark-text);
}

.no-session p {
  color: var(--secondary-color);
  margin-bottom: 10px;
  line-height: 1.6;
}

.success-box {
  text-align: center;
  padding: 40px 20px;
  background: #d5f4e6;
  border-radius: 8px;
  border-left: 4px solid var(--success-color);
}

.success-box h2 {
  margin-bottom: 15px;
  color: var(--success-color);
}

.success-box p {
  color: var(--dark-text);
  margin: 10px 0;
  font-size: 14px;
}

.geo-status-section {
  background: var(--light-bg);
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.geo-status {
  background: white;
  padding: 15px;
  border-radius: 6px;
  border-left: 4px solid var(--warning-color);
  font-weight: 600;
  color: var(--dark-text);
  margin: 10px 0;
}

.small-text {
  font-size: 13px;
  color: var(--secondary-color);
  margin: 10px 0;
  line-height: 1.5;
}

.loading-indicator {
  text-align: center;
  padding: 40px 20px;
  background: var(--light-bg);
  border-radius: 8px;
}

.loading-indicator p {
  margin-top: 15px;
  color: var(--secondary-color);
}

/* ===================== */
/* Responsive Design    */
/* ===================== */

@media (max-width: 768px) {
  .navbar-content {
    flex-direction: column;
    gap: 15px;
    padding: 15px;
  }

  .app-title {
    font-size: 20px;
  }

  .user-info {
    justify-content: space-between;
    width: 100%;
  }

  .session-header {
    flex-direction: column;
    gap: 15px;
  }

  .timer-display {
    min-width: auto;
    width: 100%;
  }

  .timer {
    font-size: 36px;
  }

  .card {
    padding: 20px;
  }

  .auth-card {
    padding: 25px;
  }

  .modal-content {
    margin: 20px;
    max-width: 100%;
  }

  .qr-section {
    margin: 20px 0;
  }

  .table-container {
    font-size: 13px;
  }

  .attendance-table th,
  .attendance-table td {
    padding: 8px;
  }

  .button-group {
    flex-direction: column;
  }

  .modal-buttons {
    flex-direction: column;
  }

  .session-info p {
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  .navbar-content {
    padding: 10px;
  }

  .app-title {
    font-size: 18px;
  }

  .main-container {
    padding: 0 10px;
  }

  .card {
    padding: 15px;
    margin-bottom: 15px;
  }

  .auth-card {
    padding: 20px;
  }

  .auth-header h1 {
    font-size: 24px;
  }

  .timer {
    font-size: 28px;
  }

  .btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .modal-content {
    padding: 20px;
  }

  .qr-code-container {
    max-width: 100%;
  }

  .session-header {
    gap: 10px;
  }

  .success-message {
    right: 10px;
    left: 10px;
    bottom: 10px;
    min-width: auto;
  }

  .loading-indicator {
    padding: 30px 15px;
  }

  .no-session {
    padding: 30px 15px;
  }

  .success-box {
    padding: 25px 15px;
  }
}

/* ===================== */
/* QR Scanner Modal      */
/* ===================== */

#qrScannerModal {
  display: flex;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(2px);
}

#qrScannerModal.hidden {
  display: none;
}

.scanner-modal {
  background: white;
  border-radius: 20px;
  width: 90%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideDown 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideDown {
  from {
    transform: translateY(-40px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  margin: 0;
  color: var(--dark-text);
  font-size: 22px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--dark-text);
  opacity: 0.5;
  padding: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--light-bg);
  border-radius: 50%;
  opacity: 1;
}

#qr_reader {
  border: 2px solid var(--primary-color);
  border-radius: 8px;
  overflow: hidden !important;
  margin: 20px !important;
}

.scanner-info {
  padding: 20px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.scanner-info p {
  margin: 0 0 10px 0;
  color: var(--dark-text);
  font-size: 14px;
}

.scanner-info .small-text {
  color: var(--secondary-color);
  font-size: 12px;
}

.modal-buttons {
  display: flex;
  gap: 12px;
  padding: 24px;
  justify-content: flex-end;
}

.modal-buttons .btn {
  min-width: 100px;
}

/* ===================== */
/* Responsive Design    */
/* ===================== */

/* Tablet (768px and down) */
@media (max-width: 768px) {
  .navbar-content {
    padding: 14px 20px;
    gap: 15px;
  }

  .app-title {
    font-size: 20px;
  }

  .user-info {
    gap: 12px;
    font-size: 13px;
  }

  .user-info div {
    font-size: 12px;
  }

  .main-container {
    margin: 24px auto;
    padding: 0 16px;
  }

  .card {
    padding: 24px;
    border-radius: 14px;
    margin-bottom: 18px;
  }

  .card h2 {
    font-size: 20px;
    margin-bottom: 18px;
  }

  .btn {
    padding: 10px 18px;
    font-size: 13px;
  }

  .auth-card {
    max-width: 100%;
    padding: 36px 28px;
    border-radius: 16px;
  }

  .form-group input,
  .form-group select {
    padding: 10px 12px;
    font-size: 16px; /* Prevent zoom on iOS */
  }

  .scanner-modal {
    width: 95%;
    max-width: 100%;
    border-radius: 16px;
  }

  .modal-header {
    padding: 20px;
  }

  .modal-header h2 {
    font-size: 18px;
  }

  .modal-buttons {
    padding: 16px;
    gap: 10px;
  }
}

/* Mobile (480px and down) */
@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }

  body {
    line-height: 1.5;
  }

  .navbar-content {
    padding: 12px 16px;
    flex-wrap: wrap;
  }

  .app-title {
    font-size: 18px;
    flex: 1;
  }

  .user-info {
    width: 100%;
    margin-top: 8px;
    gap: 10px;
    font-size: 12px;
  }

  .main-container {
    margin: 16px auto;
    padding: 0 12px;
  }

  .card {
    padding: 18px;
    margin-bottom: 14px;
    border-radius: 12px;
  }

  .card h2 {
    font-size: 18px;
    margin-bottom: 14px;
  }

  .card h3 {
    font-size: 15px;
    margin: 16px 0 12px 0;
  }

  .auth-container {
    padding: 12px;
  }

  .auth-card {
    max-width: 100%;
    padding: 28px 20px;
    border-radius: 14px;
  }

  .auth-header h1 {
    font-size: 26px;
    margin-bottom: 6px;
  }

  .auth-header p {
    font-size: 12px;
  }

  .form-section h2 {
    font-size: 18px;
    margin-bottom: 16px;
  }

  .form-group {
    margin-bottom: 14px;
  }

  .form-group label {
    font-size: 12px;
    margin-bottom: 6px;
  }

  .form-group input,
  .form-group select {
    padding: 10px 12px;
    font-size: 16px;
    border-radius: 8px;
  }

  .btn {
    padding: 10px 16px;
    font-size: 13px;
    border-radius: 8px;
  }

  .btn-primary {
    width: 100%;
  }

  .role-gateway-title {
    font-size: 28px;
  }

  .role-gateway-subtitle {
    font-size: 14px;
    margin-bottom: 30px;
  }

  .role-buttons-container {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .btn-role {
    min-width: 100%;
    padding: 28px 20px;
    border-radius: 12px;
  }

  .btn-role-icon {
    width: 60px;
    height: 60px;
    font-size: 36px;
  }

  .btn-role h3 {
    font-size: 16px;
  }

  .btn-role p {
    font-size: 12px;
  }

  .error-message,
  .success-message {
    padding: 12px 14px;
    font-size: 12px;
  }

  .success-message {
    min-width: 200px;
    bottom: 16px;
    right: 16px;
  }

  .scanner-modal {
    width: 95%;
    max-width: 100%;
    border-radius: 12px;
    max-height: 80vh;
  }

  .modal-header {
    padding: 16px;
  }

  .modal-header h2 {
    font-size: 16px;
  }

  .modal-buttons {
    flex-direction: column;
    padding: 14px;
  }

  .modal-buttons .btn {
    width: 100%;
    min-width: auto;
  }

  #qrScannerModal {
    padding: 12px;
  }

  .scanner-info p {
    font-size: 13px;
  }

  .scanner-info .small-text {
    font-size: 11px;
  }
}

/* Dashboard Loading Spinner */
#loadingSpinner {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.2);
  width: 100%;
  height: 100%;
}

#loadingSpinner .spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(190, 24, 93, 0.1);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  background: white;
  box-shadow: var(--shadow-md);
  padding: 16px;
}

/* ===================== */
/* Lecturer Layout       */
/* ===================== */

.lecturer-layout {
  display: flex;
  min-height: calc(100vh - 70px);
  background: transparent;
}

.sidebar {
  width: 280px;
  background: white;
  border-right: 1px solid var(--border-color);
  padding: 24px 0;
  position: fixed;
  left: 0;
  top: 70px;
  height: calc(100vh - 70px);
  overflow-y: auto;
  box-shadow: var(--shadow-sm);
}

.sidebar-header {
  padding: 0 24px 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
  color: var(--dark-text);
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 16px 12px;
}

.sidebar-item {
  background: none;
  border: none;
  padding: 12px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  border-radius: 10px;
  color: var(--dark-text);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  text-align: left;
}

.sidebar-item:hover {
  background: var(--light-bg);
}

.sidebar-item.active {
  background: rgba(190, 24, 93, 0.1);
  color: var(--primary-color);
}

.sidebar-icon {
  font-size: 18px;
  display: inline-flex;
  align-items: center;
}

.sidebar-text {
  flex: 1;
}

.sidebar-section {
  padding: 20px 16px;
  border-top: 1px solid var(--border-color);
  margin-top: 16px;
}

.sidebar-section h4 {
  color: var(--dark-text);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0 0 12px 0;
  opacity: 0.6;
}

.sessions-list-sidebar {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.session-item-sidebar {
  padding: 10px 12px;
  background: var(--light-bg);
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  font-size: 13px;
}

.session-item-sidebar:hover {
  background: var(--border-color);
  border-color: var(--primary-color);
}

.session-item-sidebar.active {
  background: rgba(190, 24, 93, 0.1);
  border-color: var(--primary-color);
  color: var(--primary-color);
  font-weight: 600;
}

.main-content {
  flex: 1;
  margin-left: 280px;
  padding: 30px;
}

.view-panel {
  display: none;
}

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

.session-details-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  gap: 20px;
}

.session-details-header h2 {
  margin-bottom: 12px;
}

.sessions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.session-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.session-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.session-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.session-card-title {
  font-weight: 600;
  color: var(--dark-text);
  font-size: 14px;
}

.session-card-date {
  font-size: 12px;
  color: var(--dark-text);
  opacity: 0.6;
}

.session-card-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.session-card-info p {
  font-size: 13px;
  color: var(--dark-text);
  margin: 0;
}

.session-card-count {
  font-weight: 600;
  color: var(--primary-color);
}

.session-card-actions {
  display: flex;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}

.session-card-actions button {
  flex: 1;
  padding: 8px 12px;
  font-size: 12px;
}

.empty-text {
  text-align: center;
  color: var(--dark-text);
  opacity: 0.5;
  font-size: 14px;
  padding: 20px;
  margin: 0;
}

/* Session Details Styles */
#detailsQrCodeContainer {
  text-align: center;
  padding: 20px;
  background: var(--light-bg);
  border-radius: 12px;
}

#detailsAttendanceList {
  background: white;
}

.button-group {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.button-group button {
  flex: 1;
  min-width: 150px;
}

/* Error and Success Messages */
.error-message,
.success-message {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
  display: none;
}

.error-message {
  background: #fee;
  color: #c33;
  border-left: 4px solid #c33;
}

.success-message {
  background: #efe;
  color: #3c3;
  border-left: 4px solid #3c3;
}

/* Session Section Styles */
.session-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.timer-display {
  text-align: center;
}

.timer {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary-color);
  font-family: 'Courier New', monospace;
}

.timer-display p {
  margin-top: 8px;
  font-size: 12px;
  color: var(--dark-text);
  opacity: 0.7;
}

.qr-section {
  margin-bottom: 32px;
}

.qr-section h3 {
  margin-bottom: 16px;
  color: var(--dark-text);
}

.qr-code-container {
  display: flex;
  justify-content: center;
  padding: 20px;
  background: var(--light-bg);
  border-radius: 12px;
}

.attendance-section {
  margin-bottom: 32px;
}

.attendance-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.attendance-section h3 {
  margin: 0;
  color: var(--dark-text);
}

.attendance-sort-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.attendance-sort-controls label {
  font-size: 13px;
  color: var(--dark-text);
  opacity: 0.7;
  font-weight: 500;
}

.sort-dropdown {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: white;
  color: var(--dark-text);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
}

.sort-dropdown:hover,
.sort-dropdown:focus {
  border-color: var(--primary-color);
  outline: none;
}

.table-container {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.attendance-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}

.attendance-table thead {
  background: var(--primary-color);
  color: white;
}

.attendance-table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
}

.attendance-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  font-size: 13px;
}

.attendance-table tbody tr:hover {
  background: var(--light-bg);
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  padding: 32px;
  border-radius: 16px;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
}

.modal-content h2 {
  margin-bottom: 12px;
  color: var(--dark-text);
}

.modal-content p {
  margin-bottom: 12px;
  color: var(--dark-text);
  opacity: 0.7;
  font-size: 14px;
}

.modal-content ul {
  margin-left: 20px;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--dark-text);
  opacity: 0.7;
}

.modal-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.modal-buttons button {
  flex: 1;
  min-width: 140px;
}

/* Loading Spinner */
#loadingSpinner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(250, 248, 243, 0.95);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1001;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border-color);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

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

/* Responsive Design for Lecturer Portal */
@media (max-width: 768px) {
  .lecturer-layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .main-content {
    margin-left: 0;
  }

  .session-header {
    flex-direction: column;
    gap: 20px;
  }

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

  .button-group {
    flex-direction: column;
  }

  .button-group button {
    width: 100%;
  }

  .session-details-header {
    flex-direction: column;
  }

  .timer {
    font-size: 36px;
  }
}

@media (max-width: 480px) {
  .sidebar-text {
    display: none;
  }

  .sidebar-nav {
    padding: 8px;
  }

  .sidebar-item {
    padding: 12px 8px;
    justify-content: center;
  }

  .main-content {
    padding: 16px;
  }

  .session-header {
    flex-direction: column;
  }

  .timer {
    font-size: 28px;
  }

  .modal-content {
    padding: 20px;
    margin: 16px;
  }

  .modal-buttons {
    flex-direction: column;
  }

  .modal-buttons button {
    width: 100%;
  }
}

/* Student Portal Layout */
.student-layout {
  display: flex;
  min-height: calc(100vh - 70px);
  background: transparent;
}

.student-main-content {
  flex: 1;
  padding: 30px;
  overflow-y: auto;
}

.student-sidebar {
  width: 320px;
  background: white;
  border-left: 1px solid var(--border-color);
  padding: 24px 0;
  max-height: calc(100vh - 70px);
  overflow-y: auto;
}

.student-sidebar .sidebar-header {
  padding: 0 20px;
  margin-bottom: 16px;
}

.student-sidebar .sidebar-header h3 {
  margin: 0;
  font-size: 16px;
  color: var(--dark-text);
  font-weight: 600;
}

.attendance-history-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.attendance-history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  margin: 0 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  background: var(--light-bg);
  border: 1px solid transparent;
}

.attendance-history-item:hover {
  background: white;
  border-color: var(--border-color);
}

.history-item-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.history-item-lecturer {
  font-size: 13px;
  font-weight: 600;
  color: var(--dark-text);
}

.history-item-details {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 11px;
  color: var(--dark-text);
  opacity: 0.6;
}

.history-item-method {
  background: rgba(190, 24, 93, 0.1);
  color: var(--primary-color);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
}

.history-item-delete {
  background: none;
  border: none;
  color: #999;
  font-size: 18px;
  cursor: pointer;
  padding: 4px 8px;
  transition: var(--transition);
  margin-left: 8px;
}

.history-item-delete:hover {
  color: #c33;
}

.empty-text {
  text-align: center;
  color: var(--dark-text);
  opacity: 0.5;
  font-size: 12px;
  padding: 16px;
  margin: 0;
}

/* Responsive Design for Student Portal */
@media (max-width: 1024px) {
  .student-sidebar {
    width: 280px;
  }

  .student-main-content {
    padding: 20px;
  }
}

@media (max-width: 768px) {
  .student-layout {
    flex-direction: column;
  }

  .student-sidebar {
    width: 100%;
    max-height: 40vh;
    border-left: none;
    border-top: 1px solid var(--border-color);
    padding: 16px 0;
    order: 2;
  }

  .student-main-content {
    flex: 1;
    order: 1;
    padding: 16px;
  }

  .attendance-history-item {
    padding: 10px 12px;
  }

  .history-item-lecturer {
    font-size: 12px;
  }

  .history-item-details {
    font-size: 10px;
  }
}

@media (max-width: 480px) {
  .student-sidebar {
    max-height: 35vh;
  }

  .student-main-content {
    padding: 12px;
  }

  .student-sidebar .sidebar-header {
    padding: 0 12px;
  }

  .attendance-history-item {
    margin: 0 4px;
    padding: 8px 10px;
  }

  .history-item-delete {
    padding: 2px 4px;
    font-size: 16px;
  }

  .card {
    border-radius: 8px;
  }
}