/* ============================================
   Foto-Route-Mapper - Main Styles
   ============================================ */

/* CSS Variables (Design System from trip-view) */
:root {
  /* Colors */
  --color-primary: #4285F4;        /* Google Maps Blue */
  --color-primary-dark: #3367D6;
  --color-accent: #FF5722;         /* Photo marker red */
  --color-success: #4CAF50;
  --color-warning: #FBBC04;
  --color-error: #EA4335;
  --color-danger: #dc3545;

  --color-text-primary: #202124;   /* Dark Gray */
  --color-text-secondary: #5F6368; /* Medium Gray */
  --color-bg-page: #F5F5F5;        /* Light Gray */
  --color-bg-card: #FFFFFF;
  --color-border: #E0E0E0;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.25);

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
                 'Helvetica Neue', Arial, sans-serif;
}

/* ============================================
   Reset & Base
   ============================================ */

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

html {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg-page);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

/* ============================================
   Header
   ============================================ */

.header {
  background: var(--color-bg-card);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg) var(--spacing-xl);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.header-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.header-actions {
  display: flex;
  gap: var(--spacing-md);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

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

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

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: #f1f3f4;
  color: var(--color-text-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: #e8eaed;
  box-shadow: var(--shadow-sm);
}

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

.btn-danger:hover:not(:disabled) {
  background: #c82333;
  box-shadow: var(--shadow-md);
}

.btn .material-icons {
  font-size: 20px;
}

/* ============================================
   Info Banner
   ============================================ */

.info-banner {
  max-width: 1400px;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-lg);
  background: #e8f0fe;
  border-radius: var(--radius-md);
  text-align: center;
}

.info-text {
  font-size: 16px;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.info-subtext {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ============================================
   Toolbar
   ============================================ */

.toolbar {
  max-width: 1400px;
  margin: 0 auto var(--spacing-lg);
  padding: 0 var(--spacing-xl);
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  align-items: center;
}

.toolbar-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.toolbar-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.toolbar-label .material-icons {
  font-size: 20px;
}

.toolbar-select,
.toolbar-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: white;
  font-size: 14px;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toolbar-select:hover,
.toolbar-btn:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.toolbar-select:focus,
.toolbar-btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.favorites-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.favorites-toggle .material-icons {
  font-size: 20px;
}

.favorites-toggle.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.favorites-toggle.active .material-icons {
  content: 'star';
}

.filter-count {
  display: inline-block;
  min-width: 20px;
  height: 20px;
  line-height: 20px;
  text-align: center;
  background: var(--color-primary);
  color: white;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 600;
  margin-right: var(--spacing-xs);
}

.filter-count:empty {
  display: none;
}

/* ============================================
   Trip Grid
   ============================================ */

.trip-grid-container {
  flex: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl) var(--spacing-xl);
  width: 100%;
}

.trip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* ============================================
   Trip Card
   ============================================ */

.trip-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
  position: relative;
}

.trip-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.trip-card-cover {
  position: relative;
  width: 100%;
  padding-top: 66.67%; /* 3:2 aspect ratio */
  overflow: hidden;
  background: var(--color-bg-page);
}

.trip-card-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.trip-card:hover .trip-card-image {
  transform: scale(1.05);
}

.trip-card-favorite {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 10;
}

.trip-card-favorite:hover {
  transform: scale(1.2);
  background: white;
}

.trip-card-favorite .material-icons {
  font-size: 24px;
  color: var(--color-text-secondary);
}

.trip-card-favorite.active .material-icons {
  color: #FBBC04;
}

.trip-card-drag-handle {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs);
  cursor: grab;
  opacity: 0;
  transition: all var(--transition-fast);
  z-index: 10;
  font-size: 20px;
  color: var(--color-text-secondary);
}

.trip-card:hover .trip-card-drag-handle {
  opacity: 1;
}

.trip-card-drag-handle:active {
  cursor: grabbing;
}

.trip-card.dragging {
  opacity: 0.5;
}

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

.trip-card-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 1.4;
}

.trip-card-date {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.trip-card-stats {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  font-size: 12px;
  color: var(--color-text-secondary);
}

.trip-card-stat {
  display: flex;
  align-items: center;
  gap: 4px;
}

.trip-card-stat .material-icons {
  font-size: 16px;
}

.trip-card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xs);
}

.trip-card-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: white;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.trip-card-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

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

.trip-card-btn.primary:hover {
  background: var(--color-primary-dark);
}

/* ============================================
   Loading & Empty States
   ============================================ */

.loading-state {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-md);
}

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

.empty-state {
  text-align: center;
  padding: var(--spacing-xl) 0;
  color: var(--color-text-secondary);
}

.empty-icon {
  font-size: 64px;
  color: var(--color-border);
  margin-bottom: var(--spacing-md);
}

.empty-state h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.empty-state p {
  font-size: 16px;
}

/* ============================================
   Toast Notifications
   ============================================ */

.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-text-primary);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  z-index: 10000;
  opacity: 0;
  transition: all var(--transition-normal);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast-icon {
  font-size: 24px;
}

.toast-message {
  font-size: 14px;
  font-weight: 500;
}

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

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