.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
  background: white;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
}

.login-card h1 {
  margin: 0 0 0.5rem 0;
  color: #1a202c;
  font-size: 2rem;
  text-align: center;
}

.login-subtitle {
  color: #64748b;
  text-align: center;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.login-error {
  background-color: #fee;
  color: #c33;
  padding: 0.75rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: #374151;
  font-weight: 500;
  font-size: 0.9rem;
}

.form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #e2e8f0;
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: #667eea;
}

button[type="submit"] {
  width: 100%;
  padding: 0.875rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s;
}

button[type="submit"]:hover:not(:disabled) {
  transform: translateY(-1px);
}

button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.shell-container {
  display: flex;
  min-height: 100vh;
  background-color: #f8fafc;
}

.shell-sidebar {
  background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  color: #f1f5f9;
  transition: width 0.3s;
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  height: 100vh;
  z-index: 1000;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.shell-sidebar.open {
  width: 280px;
}

.shell-sidebar.closed {
  width: 80px;
}

.shell-header {
  padding: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 80px;
}

.shell-sidebar.closed .shell-header {
  justify-content: center;
  padding: 1rem;
}

.shell-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.toggle-btn {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #f1f5f9;
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s ease;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toggle-btn:hover {
  background: rgba(96, 165, 250, 0.2);
  transform: scale(1.05);
}

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

.nav-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  color: #cbd5e1;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #f1f5f9;
  border-left-color: #60a5fa;
}

.nav-item.active {
  background: rgba(96, 165, 250, 0.1);
  color: #60a5fa;
  border-left-color: #60a5fa;
  font-weight: 600;
}

.shell-sidebar.closed .nav-item {
  justify-content: center;
  padding: 1rem;
  border-left: none;
}

.shell-sidebar.closed .nav-item:hover {
  border-left: none;
}

.shell-sidebar.closed .nav-item.active {
  border-left: none;
  background: rgba(96, 165, 250, 0.15);
}

.shell-sidebar.closed .nav-label {
  display: none;
}

.nav-icon {
  font-size: 1.5rem;
  width: 1.5rem;
  text-align: center;
}

.nav-label {
  font-weight: 500;
  font-size: 1rem;
  white-space: nowrap;
}

.shell-user {
  padding: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.shell-sidebar.closed .shell-user {
  padding: 1rem;
}

.user-info {
  margin-bottom: 1rem;
}

.user-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.user-email {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-top: 0.25rem;
}

.logout-btn {
  width: 100%;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.2s;
}

.logout-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.shell-content {
  flex: 1;
  margin-left: 280px;
  transition: margin-left 0.3s;
  min-height: 100vh;
}

.shell-sidebar.closed + .shell-content {
  margin-left: 80px;
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-size: 1.2rem;
  color: #64748b;
}
:root {
  font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  font-weight: 400;
  
  /* Use light theme to match timetable module */
  color-scheme: light;
  color: #333;
  background-color: #ffffff;
  
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

#root {
  min-height: 100vh;
}