/* Broadcast SIMS LCM - Dark Theme Stylesheet */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700&family=Segoe+UI:wght@400;500;600&display=swap');

/* CSS Variables */
:root {
  --primary-accent: #90caf9;
  --secondary-accent: #1976d2;
  --background-start: #1e1e2f;
  --background-end: #0d0d1a;
  --text-primary: #f0f0f0;
  --text-secondary: #b0b0b0;
  --card-bg: #1a1a2e;
  --card-border: #2a2a4e;
  --input-bg: #0d0d1a;
  --input-border: #3a3a5e;
  --input-focus: #90caf9;
  --error-color: #f44336;
  --success-color: #4caf50;
  --warning-color: #ff9800;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --font-heading: 'Orbitron', sans-serif;
  --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Base Styles */
html {
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: radial-gradient(circle at center, var(--background-start), var(--background-end));
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--primary-accent);
  margin-bottom: 1rem;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }

a {
  color: var(--primary-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--secondary-accent);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  justify-content: center;
  align-items: center;
  padding: 2rem 1rem;
}

/* Logo */
.logo-container {
  text-align: center;
  margin-bottom: 2rem;
}

.logo {
  max-width: 200px;
  height: auto;
  cursor: pointer;
  transition: transform 0.3s ease;
}

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

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 420px;
}

.card-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.card-header h1 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.card-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: var(--font-body);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 8px;
  color: var(--text-primary);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px rgba(144, 202, 249, 0.2);
}

.form-control::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

.form-control.error {
  border-color: var(--error-color);
}

.form-control.success {
  border-color: var(--success-color);
}

/* Password Input with Toggle */
.password-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input-wrapper .form-control {
  padding-right: 70px;
}

.password-toggle {
  position: absolute;
  right: 8px;
  background: var(--secondary-accent);
  border: none;
  color: white;
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  transition: background 0.3s ease;
}

.password-toggle:hover {
  background: #1565c0;
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--secondary-accent);
  cursor: pointer;
}

.checkbox-group label {
  margin-bottom: 0;
  cursor: pointer;
  user-select: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--secondary-accent);
  color: #ffffff;
  border-color: var(--secondary-accent);
}

.btn-primary:hover:not(:disabled) {
  background: #1565c0;
  border-color: #1565c0;
}

.btn-outline {
  background: transparent;
  color: var(--primary-accent);
  border-color: var(--primary-accent);
}

.btn-outline:hover:not(:disabled) {
  background: var(--primary-accent);
  color: var(--background-end);
}

.btn-danger {
  background: var(--error-color);
  color: #ffffff;
  border-color: var(--error-color);
}

.btn-danger:hover:not(:disabled) {
  background: #d32f2f;
  border-color: #d32f2f;
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Button Group */
.btn-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Links */
.link-text {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.link-text a {
  color: var(--primary-accent);
}

/* Messages */
.message {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.message-error {
  background: rgba(244, 67, 54, 0.15);
  border: 1px solid var(--error-color);
  color: #ff6659;
}

.message-success {
  background: rgba(76, 175, 80, 0.15);
  border: 1px solid var(--success-color);
  color: #6fbf73;
}

.message-warning {
  background: rgba(255, 152, 0, 0.15);
  border: 1px solid var(--warning-color);
  color: #ffb333;
}

.message-info {
  background: rgba(144, 202, 249, 0.15);
  border: 1px solid var(--primary-accent);
  color: var(--primary-accent);
}

/* Field Error */
.field-error {
  color: var(--error-color);
  font-size: 0.8rem;
  margin-top: 0.25rem;
  display: none;
}

.field-error.visible {
  display: block;
}

/* Loading Spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13, 13, 26, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.loading-overlay .spinner {
  width: 48px;
  height: 48px;
  border-width: 4px;
  border-top-color: var(--primary-accent);
}

/* Password Requirements */
.password-requirements {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.password-requirements li {
  margin-bottom: 0.25rem;
  list-style: none;
  padding-left: 1.5rem;
  position: relative;
}

.password-requirements li::before {
  content: '○';
  position: absolute;
  left: 0;
  color: var(--text-secondary);
}

.password-requirements li.valid::before {
  content: '●';
  color: var(--success-color);
}

/* Class Code Input */
.class-code-input {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: monospace;
  font-size: 1.1rem;
}

.class-code-info {
  margin-top: 0.5rem;
  padding: 0.75rem;
  background: rgba(144, 202, 249, 0.1);
  border-radius: 8px;
  font-size: 0.9rem;
  display: none;
}

.class-code-info.visible {
  display: block;
}

.class-code-info .class-name {
  color: var(--primary-accent);
  font-weight: 600;
}

.class-code-info .teacher-name {
  color: var(--text-secondary);
}

/* Dashboard Layout */
.dashboard-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: var(--card-bg);
  border-right: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  z-index: 100;
}

.sidebar-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--card-border);
}

.sidebar-header img {
  max-width: 150px;
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  color: var(--text-secondary);
  transition: all 0.3s ease;
  border-left: 3px solid transparent;
}

.nav-item:hover,
.nav-item.active {
  background: rgba(144, 202, 249, 0.1);
  color: var(--primary-accent);
  border-left-color: var(--primary-accent);
}

.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--card-border);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--secondary-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
}

.user-name {
  font-weight: 500;
  color: var(--text-primary);
}

.user-role {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: capitalize;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 2rem;
}

.page-header {
  margin-bottom: 2rem;
}

.page-header h1 {
  margin-bottom: 0.5rem;
}

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

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.5rem;
}

.stat-card h3 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-family: var(--font-body);
}

.stat-card .value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-accent);
  font-family: var(--font-heading);
}

/* Table */
.table-container {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  overflow: hidden;
}

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

.table-header h2 {
  font-size: 1.25rem;
  margin: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--card-border);
}

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

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(144, 202, 249, 0.05);
}

/* Badge */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 20px;
  text-transform: uppercase;
}

.badge-admin { background: #7c4dff; color: white; }
.badge-manager { background: #00bcd4; color: white; }
.badge-teacher { background: #4caf50; color: white; }
.badge-student { background: #ff9800; color: white; }
.badge-active { background: rgba(76, 175, 80, 0.2); color: var(--success-color); }
.badge-inactive { background: rgba(244, 67, 54, 0.2); color: var(--error-color); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13, 13, 26, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform 0.3s ease;
}

.modal-overlay.visible .modal {
  transform: translateY(0);
}

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

.modal-header h2 {
  margin: 0;
  font-size: 1.25rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color 0.3s ease;
}

.modal-close:hover {
  color: var(--error-color);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--card-border);
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .sidebar.open {
    transform: translateX(0);
  }

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

  .card {
    padding: 1.5rem;
  }

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

  table {
    display: block;
    overflow-x: auto;
  }
}

/* Utility Classes */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }