/**
 * Common Styles
 *
 * Shared utility classes and commonly repeated styles
 * extracted from inline <style> tags across templates.
 *
 * Import after variables.css:
 *   <link rel="stylesheet" href="/static/styles/variables.css">
 *   <link rel="stylesheet" href="/static/styles/common.css">
 */

/* ========================================
   BODY BACKGROUNDS
   ======================================== */

body.themed-bg {
  transition: background 0.5s ease;
}

/* ========================================
   NOTIFICATIONS
   ======================================== */

.notification {
  align-items: center;
  justify-content: space-between;
  min-width: 300px;
  max-width: 500px;
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 15px 20px;
  border-radius: var(--border-radius-md, 8px);
  color: var(--color-white, #fff);
  display: flex;
  z-index: var(--z-toast, 800);
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease;
}

.notification.success {
  background-color: var(--color-success-dark, #059669);
}

.notification.error {
  background-color: var(--color-error, #dc2626);
}

.notification.warning {
  background-color: var(--color-warning, #f59e0b);
}

.notification .close-btn {
  background: none;
  border: none;
  font-size: 16px;
  cursor: pointer;
  color: white;
  margin-left: 15px;
  padding: 0;
  opacity: 0.8;
  transition: opacity var(--transition-fast, 150ms ease);
}

.notification .close-btn:hover {
  opacity: 1;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* ========================================
   LOADING STATES
   ======================================== */

.loading {
  text-align: center;
  padding: 40px;
  color: var(--color-text-secondary, #666);
}

.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 3px solid #f3f3f3;
  border-top: 3px solid var(--color-primary, #216BF4);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--border-radius-md, 8px);
  font-weight: var(--font-weight-medium, 500);
  cursor: pointer;
  transition: all var(--transition-fast, 150ms ease);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary, #216BF4);
  color: var(--color-white, #fff);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover, #1d5ed8);
}

.btn-secondary {
  background-color: var(--color-bg-gray-light, #f0f0f0);
  color: var(--color-text-primary, #333);
}

.btn-secondary:hover {
  background-color: var(--color-border-light, #e0e0e0);
}

.btn-danger {
  background-color: var(--color-error, #dc2626);
  color: var(--color-white, #fff);
}

.btn-danger:hover {
  background-color: var(--color-error-dark, #dc3545);
}

.btn-success {
  background-color: var(--color-success-dark, #059669);
  color: var(--color-white, #fff);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========================================
   CARDS
   ======================================== */

.card {
  background: var(--color-bg-white, #fff);
  border-radius: var(--border-radius-lg, 12px);
  box-shadow: var(--shadow-card, 0 2px 8px rgba(0, 0, 0, 0.1));
  padding: var(--spacing-lg, 1.5rem);
}

.card-header {
  margin-bottom: var(--spacing-md, 1rem);
  padding-bottom: var(--spacing-md, 1rem);
  border-bottom: 1px solid var(--color-border-light, #e0e0e0);
}

.card-title {
  font-size: var(--font-size-lg, 1.125rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--color-text-primary, #333);
  margin: 0;
}

/* ========================================
   FORMS
   ======================================== */

.form-group {
  margin-bottom: var(--spacing-md, 1rem);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs, 0.25rem);
  font-weight: var(--font-weight-medium, 500);
  color: var(--color-text-primary, #333);
}

.form-input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border-light, #e0e0e0);
  border-radius: var(--border-radius-md, 8px);
  font-size: var(--font-size-base, 1rem);
  transition: border-color var(--transition-fast, 150ms ease);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary, #216BF4);
  box-shadow: 0 0 0 3px rgba(33, 107, 244, 0.1);
}

.form-input::placeholder {
  color: var(--color-text-muted, #9ca3af);
}

/* ========================================
   MODALS
   ======================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop, 400);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal {
  background: var(--color-bg-white, #fff);
  border-radius: var(--border-radius-xl, 16px);
  box-shadow: var(--shadow-modal);

  overflow: auto;
  z-index: var(--z-modal, 500);
}

.modal-header {
  padding: var(--spacing-lg, 1.5rem);
  border-bottom: 1px solid var(--color-border-light, #e0e0e0);
}

.modal-body {
  padding: var(--spacing-lg, 1.5rem);
}

.modal-footer {
  padding: var(--spacing-lg, 1.5rem);
  border-top: 1px solid var(--color-border-light, #e0e0e0);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm, 0.5rem);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.text-right {
  text-align: right;
}

.text-success {
  color: var(--color-success-dark, #059669);
}

.text-error {
  color: var(--color-error, #dc2626);
}

.text-muted {
  color: var(--color-text-muted, #9ca3af);
}

/* Flexbox utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--spacing-sm, 0.5rem);
}

.gap-md {
  gap: var(--spacing-md, 1rem);
}