/* CSS Variables for theming */
:root {
  --color-primary: #1a73e8;
  --color-secondary: #111111;
  --color-accent: #ffb300;
  --color-bg: #ffffff;
  --color-text: #111111;
  --color-muted: #666666;
  --color-border: #e0e0e0;
  --color-success: #34a853;
  --color-error: #ea4335;
  --color-warning: #fbbc04;
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  background: var(--color-bg);
  border-bottom: 2px solid var(--color-primary);
  padding: 1rem 0;
  margin-bottom: 2rem;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--color-primary);
}

.logo img {
  height: 36px;
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
}

.nav {
  display: flex;
  gap: 1rem;
}

.nav a {
  color: var(--color-text);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.nav a:hover {
  background-color: var(--color-primary);
  color: white;
}

/* Main content */
.main-content {
  margin-bottom: 3rem;
}

.page-title {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--color-secondary);
}

/* Forms */
.form-section {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.form-group {
  margin-bottom: 1.5rem;
}

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

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

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

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

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

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

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

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

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

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Calendar styles */
.calendar-container {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* FullCalendar customization */
.fc {
  font-family: inherit;
}

.fc-header-toolbar {
  margin-bottom: 1rem;
}

.fc-button {
  background-color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
  color: white !important;
  padding: 0.5rem 1rem !important;
  border-radius: 4px !important;
  font-weight: 500 !important;
}

.fc-button:hover {
  background-color: var(--color-accent) !important;
  border-color: var(--color-accent) !important;
}

.fc-button-active {
  background-color: var(--color-accent) !important;
  border-color: var(--color-accent) !important;
}

.fc-event {
  background-color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
  cursor: pointer;
}

.fc-event:hover {
  background-color: var(--color-accent) !important;
  border-color: var(--color-accent) !important;
}

/* Messages */
.message {
  padding: 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.message-success {
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
}

.message-error {
  background-color: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

.message-warning {
  background-color: #fff3cd;
  border: 1px solid #ffeaa7;
  color: #856404;
}

/* Footer */
.footer {
  background-color: var(--color-secondary);
  color: white;
  padding: 2rem 0;
  margin-top: 3rem;
  border-top: 3px solid var(--color-primary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-info {
  flex: 1;
  min-width: 200px;
}

.footer-info h3 {
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.footer-info p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.8;
}

/* AdSense */
.adsense-container {
  margin-top: 1rem;
  text-align: center;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Responsive design */
@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }
  
  .header-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .nav {
    justify-content: center;
  }
  
  .page-title {
    font-size: 1.5rem;
  }
  
  .form-section {
    padding: 1.5rem;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .fc-toolbar {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .fc-toolbar-chunk {
    display: flex;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .logo h1 {
    font-size: 1.25rem;
  }
  
  .nav a {
    padding: 0.5rem;
    font-size: 0.9rem;
  }
  
  .form-section {
    padding: 1rem;
  }
  
  .btn {
    width: 100%;
    margin-bottom: 0.5rem;
  }
}

/* Loading states */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255,255,255,.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

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

/* Event Parser Section */
.event-parser-section {
  background-color: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.event-parser-section h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
  font-size: 1.2rem;
}

.parser-description {
  margin-bottom: 1rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.event-parser-section .form-group {
  margin-bottom: 1rem;
}

.event-parser-section input {
  margin-bottom: 0.5rem;
}

.supported-platforms {
  margin-top: 0.5rem;
  padding: 0.5rem;
  background-color: #e9ecef;
  border-radius: 4px;
  border-left: 3px solid var(--color-primary);
}

.event-status {
  margin-top: 0.5rem;
  padding: 0.5rem;
  border-radius: 4px;
  font-size: 0.9rem;
}

.event-status.loading {
  background-color: #fff3cd;
  border: 1px solid #ffeaa7;
  color: #856404;
}

.event-status.success {
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
}

.event-status.error {
  background-color: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

.form-divider {
  border: none;
  border-top: 2px solid #e9ecef;
  margin: 2rem 0;
}

/* Utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.hidden { display: none; }
.visible { display: block; }

/* Custom Calendar Event Tooltips */
.custom-tooltip {
  position: fixed;
  z-index: 10000;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  padding: 0;
  max-width: 350px;
  min-width: 280px;
  font-size: 14px;
  line-height: 1.4;
  opacity: 0;
  transform: translateY(10px) scale(0.95);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  backdrop-filter: blur(10px);
}

.custom-tooltip.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.event-tooltip {
  padding: 16px;
}

.tooltip-title {
  font-weight: bold;
  font-size: 16px;
  color: var(--color-primary);
  margin-bottom: 8px;
  border-bottom: 1px solid var(--color-muted);
  padding-bottom: 6px;
}

.tooltip-location {
  color: var(--color-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.tooltip-description {
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
  max-height: 80px;
  overflow-y: auto;
}

.tooltip-time {
  color: var(--color-muted);
  font-size: 13px;
  margin-bottom: 6px;
  font-weight: 500;
}

.tooltip-link {
  color: var(--color-accent);
  font-size: 13px;
  font-style: italic;
  margin-top: 8px;
  padding-top: 6px;
  border-top: 1px solid var(--color-muted);
}

/* Tooltip arrow */
.custom-tooltip::before {
  content: '';
  position: absolute;
  top: 100%;
  left: 20px;
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid var(--color-primary);
}

.custom-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 22px;
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--color-bg);
}

/* Responsive tooltip */
@media (max-width: 768px) {
  .custom-tooltip {
    max-width: 300px;
    min-width: 250px;
    font-size: 13px;
  }
  
  .tooltip-title {
    font-size: 15px;
  }
}