/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color Scheme */
  --primary-color: #dc3545;
  --primary-dark: #c82333;
  --secondary-color: #5cb85c;
  --danger-color: #d9534f;
  --warning-color: #f0ad4e;
  --info-color: #5bc0de;
  --dark-color: #2c3e50;
  --light-color: #ecf0f1;
  --white: #ffffff;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;

  /* Status Colors */
  --status-upcoming: #5cb85c;
  --status-ongoing: #f0ad4e;
  --status-completed: #6c757d;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;

  /* Sidebar */
  --sidebar-width: 250px;
  --sidebar-collapsed-width: 60px;

  /* Header */
  --header-height: 60px;
  --footer-height: 40px;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--gray-900);
  background-color: var(--gray-100);
}

/* Login Screen */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(
    135deg,
    var(--primary-color) 0%,
    var(--primary-dark) 100%
  );
}

.login-box {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  text-align: center;
  max-width: 400px;
  width: 90%;
}

.login-box h1 {
  color: var(--dark-color);
  margin-bottom: var(--spacing-md);
  font-size: 1.75rem;
}

.login-box h1 i {
  color: var(--primary-color);
  margin-right: var(--spacing-sm);
}

.login-box p {
  color: var(--gray-600);
  margin-bottom: var(--spacing-lg);
}

.google-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--white);
  border: 2px solid var(--gray-300);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray-700);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.google-btn:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.google-btn i {
  font-size: 1.25rem;
}

.error-message {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background: #f8d7da;
  color: #721c24;
  border-radius: 6px;
  font-size: 0.875rem;
}

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

.dashboard-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
  background: var(--white);
  border-bottom: 1px solid var(--gray-300);
  padding: 0 var(--spacing-lg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header-left h1 {
  font-size: 1.25rem;
  color: var(--dark-color);
  font-weight: 600;
}

.header-left h1 i {
  color: var(--primary-color);
}

.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--gray-700);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: 4px;
  transition: background var(--transition-fast);
}

.sidebar-toggle:hover {
  background: var(--gray-200);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-email {
  color: var(--gray-600);
  font-size: 0.875rem;
}

.logout-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--danger-color);
  color: var(--white);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.logout-btn:hover {
  background: #c9302c;
  transform: translateY(-1px);
}

/* Dashboard Body */
.dashboard-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--white);
  border-right: 1px solid var(--gray-300);
  overflow-y: auto;
  transition: transform var(--transition-normal);
}

.sidebar.collapsed {
  transform: translateX(calc(-1 * var(--sidebar-width)));
}

.module-nav {
  padding: var(--spacing-md) 0;
}

.module-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--gray-700);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
}

.module-nav-item:hover {
  background: var(--gray-100);
  color: var(--primary-color);
}

.module-nav-item.active {
  background: var(--gray-100);
  color: var(--primary-color);
  border-left-color: var(--primary-color);
  font-weight: 500;
}

.module-nav-item i {
  font-size: 1.25rem;
  width: 24px;
  text-align: center;
}

/* Main Content */
.main-content {
  flex: 1;
  overflow-y: auto;
  background: var(--gray-100);
  padding: var(--spacing-lg);
}

/* Dashboard Footer */
.dashboard-footer {
  height: var(--footer-height);
  background: var(--white);
  border-top: 1px solid var(--gray-300);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--spacing-lg);
}

.dashboard-footer p {
  font-size: 0.75rem;
  color: var(--gray-600);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--gray-500);
  color: var(--white);
}

.btn-secondary:hover {
  background: var(--gray-600);
}

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

.btn-success:hover {
  background: #4cae4c;
}

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

.btn-danger:hover {
  background: #c9302c;
}

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.875rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--gray-400);
  border-radius: 6px;
  font-size: 0.875rem;
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  color: var(--danger-color);
  font-size: 0.75rem;
  margin-top: var(--spacing-xs);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: 12px;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.modal-content h3 {
  margin-bottom: var(--spacing-md);
  color: var(--dark-color);
}

.modal-content p {
  margin-bottom: var(--spacing-lg);
  color: var(--gray-700);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  background: var(--white);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 300px;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast.success {
  border-left: 4px solid var(--secondary-color);
}

.toast.error {
  border-left: 4px solid var(--danger-color);
}

.toast.warning {
  border-left: 4px solid var(--warning-color);
}

.toast.info {
  border-left: 4px solid var(--info-color);
}

.toast i {
  font-size: 1.25rem;
}

.toast.success i {
  color: var(--secondary-color);
}

.toast.error i {
  color: var(--danger-color);
}

.toast.warning i {
  color: var(--warning-color);
}

.toast.info i {
  color: var(--info-color);
}

.toast-message {
  flex: 1;
  font-size: 0.875rem;
}

.toast-close {
  background: none;
  border: none;
  color: var(--gray-500);
  cursor: pointer;
  padding: 0;
  font-size: 1.25rem;
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-upcoming {
  background: rgba(92, 184, 92, 0.1);
  color: var(--status-upcoming);
}

.badge-ongoing {
  background: rgba(240, 173, 78, 0.1);
  color: var(--status-ongoing);
}

.badge-completed {
  background: rgba(108, 117, 125, 0.1);
  color: var(--status-completed);
}

/* Responsive Design */
@media (max-width: 768px) {
  .sidebar-toggle {
    display: block;
  }

  .sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    z-index: 99;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
  }

  .header-left h1 {
    font-size: 1rem;
  }

  .user-email {
    display: none;
  }

  .main-content {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .logout-btn span {
    display: none;
  }

  .dashboard-footer p {
    font-size: 0.625rem;
  }
}