/* ============================================================
   DRONEFOTO'S MARKTPLAATS — Stylesheet
   ============================================================ */

/* --- Custom Properties --- */
:root {
  --color-primary: #1a73e8;
  --color-primary-dark: #1557b0;
  --color-primary-light: #e8f0fe;
  --color-accent: #ff6d00;
  --color-accent-dark: #e65100;
  --color-success: #0d904f;
  --color-success-light: #e6f4ea;
  --color-danger: #d93025;
  --color-danger-light: #fce8e6;
  --color-warning: #f9ab00;
  --color-warning-light: #fef7e0;
  --color-text: #202124;
  --color-text-secondary: #5f6368;
  --color-text-light: #80868b;
  --color-border: #dadce0;
  --color-bg: #f8f9fa;
  --color-bg-white: #ffffff;
  --color-bg-hover: #f1f3f4;
  --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.18);
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --max-width: 1280px;
  --header-height: 64px;
}

/* --- Reset --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.main-content {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.site-logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.site-logo__icon {
  font-size: 1.5rem;
}

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

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.15s ease;
}

.site-nav__link:hover {
  background: var(--color-bg-hover);
  color: var(--color-text);
  text-decoration: none;
}

.site-nav__link--active {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
}

.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);
}

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

.btn--accent:hover:not(:disabled) {
  background: var(--color-accent-dark);
}

.btn--outline {
  background: transparent;
  border: 1.5px solid var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

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

.btn--danger:hover:not(:disabled) {
  background: #c5221f;
}

.btn--sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn--lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn--block {
  width: 100%;
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-white);
  color: var(--color-text);
  font-size: 0.95rem;
  transition: border-color 0.15s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-light);
}

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

.form-hint {
  margin-top: var(--spacing-xs);
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.form-error {
  margin-top: var(--spacing-xs);
  font-size: 0.8rem;
  color: var(--color-danger);
}

/* --- Cards --- */
.card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--color-bg);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card:hover .card__image img {
  transform: scale(1.03);
}

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

.card__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card__meta {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.card__price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

/* --- Photo Grid --- */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

/* --- Photo Detail --- */
.photo-detail {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--spacing-xl);
  align-items: start;
}

.photo-detail__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
}

.photo-detail__image img {
  width: 100%;
  height: auto;
}

.photo-detail__sidebar {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-lg));
}

.photo-detail__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.photo-detail__price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.photo-detail__meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.photo-detail__meta-item:last-child {
  border-bottom: none;
}

.photo-detail__meta-label {
  font-weight: 600;
  color: var(--color-text);
  min-width: 100px;
}

/* --- Hero --- */
.hero {
  position: relative;
  text-align: center;
  padding: 80px var(--spacing-md);
  background-color: #0a2850;
  background-image: url('/images/hero-drone.jpg');
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  color: white;
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-xl);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10, 40, 80, 0.7) 0%, rgba(10, 60, 120, 0.6) 100%);
  z-index: 1;
}

.hero > * {
  position: relative;
  z-index: 2;
}

.hero__title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.5px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.hero__subtitle {
  font-size: 1.15rem;
  opacity: 0.95;
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.hero__search {
  display: flex;
  max-width: 600px;
  margin: 0 auto;
  gap: var(--spacing-sm);
}

.hero__search .form-input {
  flex: 1;
  padding: 14px 20px;
  font-size: 1rem;
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.hero__search .btn {
  border-radius: var(--radius-lg);
  padding: 14px 24px;
}

/* --- USP Section --- */
.usp-section {
  margin-bottom: var(--spacing-xl);
}

.usp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.usp-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: box-shadow 0.2s ease;
}

.usp-card:hover {
  box-shadow: var(--shadow-md);
}

.usp-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.usp-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.usp-card__text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.usp-cta {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
  .usp-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Auth Pages --- */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height));
  padding: var(--spacing-xl);
}

.auth-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-md);
}

.auth-card__title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.auth-card__footer {
  text-align: center;
  margin-top: var(--spacing-lg);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* --- Dashboard --- */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
}

.stat-card__value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.stat-card__label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.stat-card--accent .stat-card__value {
  color: var(--color-accent);
}

.stat-card--success .stat-card__value {
  color: var(--color-success);
}

/* --- Tables --- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-white);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th {
  background: var(--color-bg);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: var(--color-bg-hover);
}

/* --- Badges --- */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge--active {
  background: var(--color-success-light);
  color: var(--color-success);
}

.badge--pending {
  background: var(--color-warning-light);
  color: #e37400;
}

.badge--paid {
  background: var(--color-success-light);
  color: var(--color-success);
}

.badge--expired {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

.badge--removed {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

/* --- Alerts --- */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
}

.alert--success {
  background: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid #34a853;
}

.alert--error {
  background: var(--color-danger-light);
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
}

.alert--info {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.alert--warning {
  background: var(--color-warning-light);
  color: #e37400;
  border: 1px solid var(--color-warning);
}

/* --- Section --- */
.section-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-border);
}

/* --- Upload Area --- */
.upload-area {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--color-bg);
}

.upload-area:hover,
.upload-area--active {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.upload-area__icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.upload-area__text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.upload-area__hint {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.upload-preview {
  max-width: 400px;
  margin: var(--spacing-md) auto;
  border-radius: var(--radius-md);
  overflow: hidden;
}

/* --- Pagination --- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
}

.pagination__btn {
  padding: 8px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-white);
  color: var(--color-text);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.15s ease;
}

.pagination__btn:hover:not(:disabled) {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

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

.pagination__info {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* --- Checkout form --- */
.checkout-summary {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.checkout-summary__row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.checkout-summary__row:last-child {
  border-bottom: none;
  font-weight: 700;
  font-size: 1.1rem;
}

/* --- Success page --- */
.success-page {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.success-page__icon {
  font-size: 5rem;
  margin-bottom: var(--spacing-lg);
}

.success-page__title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-success);
}

.success-page__text {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-white);
  padding: var(--spacing-lg) 0;
  margin-top: auto;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* --- Loading spinner --- */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-2xl);
  color: var(--color-text-secondary);
}

/* --- Empty state --- */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-secondary);
}

.empty-state__icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state__text {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
}

/* --- Tabs --- */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing-xs);
}

.tab {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  background: none;
  cursor: pointer;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all 0.15s ease;
}

.tab:hover {
  color: var(--color-text);
}

.tab--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-panel {
  display: none;
}

.tab-panel--active {
  display: block;
}

/* --- Mobile menu --- */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-sm);
  color: var(--color-text);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero__title {
    font-size: 1.75rem;
  }

  .hero__subtitle {
    font-size: 1rem;
  }

  .hero__search {
    flex-direction: column;
  }

  .photo-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
  }

  .photo-detail {
    grid-template-columns: 1fr;
  }

  .photo-detail__sidebar {
    position: static;
  }

  .dashboard-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .mobile-menu-btn {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
  }

  .site-nav--open {
    display: flex;
  }

  .site-footer .container {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .photo-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-stats {
    grid-template-columns: 1fr;
  }

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

/* --- Utility --- */
.hidden {
  display: none;
}

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

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.flex {
  display: flex;
}

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

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

.flex--gap-sm {
  gap: var(--spacing-sm);
}

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