/* =============================================
   OmniSearch — Watermelon UI Design System
   Ported from Watermelon UI (shadcn-based)
   ============================================= */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

html {
  height: 100%;
}

body {
  background-color: var(--background);
  color: var(--foreground);
  margin: 0;
  padding: 0;
  min-height: 100%;
  -webkit-tap-highlight-color: transparent;
  font-size: 0.875rem;
  line-height: 1.6;
}

img[src=""] {
  display: none;
}

a {
  color: inherit;
  text-decoration: none;
}

/* --- Focus-visible ring (Watermelon UI pattern) --- */
*:focus-visible {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--ring) 50%, transparent);
}

/* =============================================
   HOME PAGE
   ============================================= */
.view-home {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.view-home .container {
  width: 100%;
  max-width: 580px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
}

.view-home .hero-logo {
  font-size: 4.5rem;
  margin-bottom: 30px;
  letter-spacing: -3px;
  font-weight: 800;
  color: var(--foreground);
}

.view-home .hero-logo span {
  color: var(--foreground);
}

.view-home .search-input-wrapper {
  width: 100%;
  margin-bottom: 24px;
}

.view-home .search-box {
  font-size: 1rem;
  padding: 16px 28px;
  border-radius: calc(var(--radius) * 1.6);
  border: 1px solid var(--input);
  background: var(--card);
  color: var(--foreground);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-sm);
  width: 100%;
}

.view-home .search-box:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--ring) 50%, transparent), var(--shadow-sm);
}

.view-home .search-box::placeholder {
  color: var(--muted-foreground);
}

.view-home .buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.view-home button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: calc(var(--radius) * 1.2);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
  touch-action: manipulation;
  line-height: 1;
  white-space: nowrap;
}

.view-home .btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
}

.view-home .btn-primary:hover {
  opacity: 0.9;
}

.view-home .btn-secondary {
  background: var(--secondary);
  color: var(--secondary-foreground);
  border-color: var(--border);
}

.view-home .btn-secondary:hover {
  background: var(--accent);
  border-color: var(--ring);
}

.home-settings-btn {
  position: fixed;
  top: 27px;
  inset-inline-end: 60px;
  width: 24px;
  height: 24px;
  background-color: var(--muted-foreground);
  -webkit-mask-image: url('/static/settings.svg');
  mask-image: url('/static/settings.svg');
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  text-decoration: none;
  transition: background-color 0.2s;
}

.home-settings-btn:hover {
  background-color: var(--foreground);
}

.home-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 8px 24px;
  font-size: 0.75rem;
  color: var(--muted-foreground);
  text-align: center;
}

.version-link {
  color: var(--muted-foreground);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.version-link:hover {
  color: var(--foreground);
}

/* =============================================
   HEADER
   ============================================= */
header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-block: 15px;
  padding-inline: 60px;
  border-bottom: 1px solid var(--border);
  background: var(--background);
  width: 100%;
}

.search-form {
  flex-grow: 1;
  max-width: 600px;
}

h1 {
  font-size: 1.5rem;
  margin: 0;
  letter-spacing: -1px;
  white-space: nowrap;
}

h1 span {
  color: var(--foreground);
}

.logo-link {
  text-decoration: none;
  color: inherit;
}

header .logo-link {
  transition: transform 0.2s;
}

header .logo-link:hover {
  transform: scale(1.03);
}

/* --- Search Input (Watermelon UI Input style) --- */
.search-box {
  width: 100%;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid var(--input);
  background: var(--card);
  color: var(--foreground);
  outline: none;
  font-size: 0.875rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--ring) 50%, transparent);
}

.search-box::placeholder {
  color: var(--muted-foreground);
}

/* --- Navigation Tabs (Watermelon UI Tabs style) --- */
.nav-tabs {
  padding-inline: 60px;
  border-bottom: 1px solid var(--border);
  background: var(--background);
  width: 100%;
}

.nav-container {
  display: flex;
  gap: 30px;
}

.nav-tabs a {
  padding: 14px 0;
  color: var(--muted-foreground);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  touch-action: manipulation;
}

.nav-tabs a:hover {
  color: var(--foreground);
}

.nav-tabs a.active {
  color: var(--foreground);
  border-bottom-color: var(--foreground);
}

.nav-settings-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  margin-inline-start: auto;
  margin-top: 3px;
  background-color: var(--muted-foreground);
  -webkit-mask-image: url('/static/settings.svg');
  mask-image: url('/static/settings.svg');
  mask-size: 100% 100%;
  transition: background-color 0.2s;
  text-decoration: none;
}

.nav-settings-icon:hover,
.nav-settings-icon.active {
  background-color: var(--foreground);
}

.nav-settings-link {
  display: none;
  margin-inline-start: auto;
}

/* =============================================
   SEARCH RESULTS — Content Layout
   ============================================= */
.content-layout {
  display: grid;
  grid-template-columns: 140px minmax(0, 700px) 450px;
  gap: 60px;
  padding-block: 30px;
  padding-inline: 60px;
}

.result-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 2px;
  position: relative;
}

.result-favicon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  background-size: cover;
  background-position: center;
  position: absolute;
  inset-inline-start: -24px;
}

.url {
  color: var(--muted-foreground);
  font-size: 0.85rem;
  display: block;
  margin-bottom: 4px;
}

@media (max-width: 768px) {
  .result-favicon {
    width: 14px;
    height: 14px;
    inset-inline-start: -20px;
  }
}

@media (max-width: 480px) {
  .result-favicon {
    width: 12px;
    height: 12px;
    inset-inline-start: -16px;
  }
}

.results-container {
  grid-column: 2;
}

/* --- Engine filter badges (Watermelon UI Badge style) --- */
.engine-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.engine-filter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--secondary);
  color: var(--secondary-foreground);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  transition: background 0.2s, border-color 0.2s;
}

.engine-filter:hover {
  background: var(--accent);
  border-color: var(--ring);
}

.engine-filter.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-foreground);
}

/* --- Engine warnings --- */
.engine-warning-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.engine-warning {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 1.2);
  padding: 14px 16px;
}

.engine-warning-title {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.engine-warning-copy {
  color: var(--muted-foreground);
  line-height: 1.5;
  margin: 0;
  font-size: 0.875rem;
}

/* --- Result cards --- */
.result {
  margin-bottom: 32px;
}

.result > a {
  color: var(--foreground);
  text-decoration: none;
  font-size: 1.125rem;
  font-weight: 500;
  display: inline-block;
  margin-bottom: 4px;
  transition: opacity 0.2s;
}

.result > a:hover {
  opacity: 0.75;
}

.desc {
  color: var(--muted-foreground);
  line-height: 1.6;
  margin: 0;
  font-size: 0.875rem;
}

.cached {
  color: var(--muted-foreground);
  font-size: 0.8rem;
  display: inline-block;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}

.cached:hover {
  color: var(--foreground);
}

/* --- Infobox (Watermelon UI Card style) --- */
.infobox {
  grid-column: 3;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 1.6);
  align-self: start;
  margin-bottom: 10px;
  box-shadow: var(--shadow-sm);
}

.infobox-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
}

.infobox-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.5px;
}

.infobox-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.read-more {
  color: var(--foreground);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.875rem;
  align-self: flex-start;
  transition: opacity 0.2s;
}

.read-more:hover {
  opacity: 0.7;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.infobox-main {
  display: flex;
  gap: 15px;
  padding: 20px;
}

.infobox-image {
  width: 120px;
  height: 120px;
  min-width: 120px;
  border-radius: calc(var(--radius) * 1.2);
  border: 1px solid var(--border);
  object-fit: cover;
}

.infobox-summary {
  display: block;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--muted-foreground);
  margin: 0;
}

/* --- Pagination (Watermelon UI Button style) --- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
  padding-bottom: 40px;
}

.pagination-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: var(--card);
  color: var(--card-foreground);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: calc(var(--radius) * 1.2);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.2s, border-color 0.2s;
  touch-action: manipulation;
  min-width: 36px;
  height: 36px;
}

.pagination-btn:hover {
  background: var(--accent);
  border-color: var(--ring);
}

.pagination-current {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-foreground);
}

.pagination-current:hover {
  background: var(--primary);
  border-color: var(--primary);
  opacity: 0.9;
}

.pagination-ellipsis {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

[dir="rtl"] .pagination-btn.prev {
  transform: scaleX(-1);
}

[dir="rtl"] .pagination-btn.next {
  transform: scaleX(-1);
}

/* =============================================
   IMAGE RESULTS
   ============================================= */
.image-results-container {
  padding: 30px 60px;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
  max-width: 1600px;
  margin: 0 auto;
}

.image-card {
  background: var(--card);
  border-radius: calc(var(--radius) * 1.6);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.2s ease, border-color 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-sm);
}

.image-card:hover {
  transform: translateY(-4px);
  border-color: var(--ring);
  box-shadow: var(--shadow-md);
}

.image-wrapper {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--muted);
  overflow: hidden;
}

.image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.3s;
}

.image-overlay {
  position: absolute;
  inset: 0;
  background: oklch(0 0 0 / 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.image-card:hover .image-overlay {
  opacity: 1;
  pointer-events: auto;
}

.overlay-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 70%;
}

.overlay-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  transition: opacity 0.2s;
  touch-action: manipulation;
  line-height: 1;
}

.overlay-btn:hover {
  opacity: 0.9;
}

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

.overlay-btn.secondary {
  background: oklch(1 1 1 / 0.1);
  color: white;
  backdrop-filter: blur(4px);
  border: 1px solid oklch(1 1 1 / 0.2);
}

.image-info {
  padding: 12px;
}

.image-caption {
  display: block;
  font-size: 0.85rem;
  color: var(--foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
  font-weight: 500;
}

.image-source {
  display: block;
  font-size: 0.75rem;
  color: var(--muted-foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* =============================================
   SETTINGS
   ============================================= */
.settings-layout {
  padding-block: 30px;
  padding-inline-start: 260px;
  padding-inline-end: 60px;
}

.settings-container {
  max-width: 700px;
}

.settings-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0 0 32px 0;
  letter-spacing: -0.5px;
}

.settings-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 1.6);
  padding: 24px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}

.settings-section-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 4px 0;
}

.settings-section-desc {
  color: var(--muted-foreground);
  font-size: 0.875rem;
  margin: 0 0 20px 0;
  line-height: 1.4;
}

.settings-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
}

.settings-field + .settings-field {
  border-top: 1px solid var(--border);
}

.settings-label {
  font-size: 0.875rem;
  color: var(--foreground);
}

.settings-select {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border-radius: calc(var(--radius) * 1.2);
  border: 1px solid var(--input);
  background: var(--background);
  color: var(--foreground);
  font-size: 0.875rem;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.settings-select:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--ring) 50%, transparent);
}

.settings-checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--foreground);
  cursor: pointer;
  border-radius: calc(var(--radius) * 0.6);
}

.settings-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
  padding-bottom: 40px;
  justify-content: flex-start;
}

.settings-actions .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: var(--primary-foreground);
  border: 1px solid transparent;
  padding: 10px 24px;
  border-radius: calc(var(--radius) * 1.2);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: opacity 0.2s;
  touch-action: manipulation;
  line-height: 1;
}

.settings-actions .btn-primary:hover {
  opacity: 0.9;
}

.settings-actions .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--secondary);
  color: var(--secondary-foreground);
  border: 1px solid var(--border);
  padding: 10px 24px;
  border-radius: calc(var(--radius) * 1.2);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  touch-action: manipulation;
  line-height: 1;
}

.settings-actions .btn-secondary:hover {
  background: var(--accent);
  border-color: var(--ring);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1200px) {
  .content-layout {
    grid-template-columns: 1fr;
    padding-block: 20px;
    padding-inline: 30px;
    gap: 20px;
  }

  header {
    gap: 20px;
  }

  .results-container,
  .infobox-sidebar {
    grid-column: 1;
    max-width: 100%;
  }

  .settings-layout {
    padding-block: 20px;
    padding-inline: 30px;
    display: flex;
    justify-content: center;
  }

  .infobox-sidebar {
    order: -1;
  }

  .nav-tabs,
  .image-results-container {
    padding-inline: 30px;
  }

  header {
    padding-block: 15px;
    padding-inline: 30px;
  }
}

@media (max-width: 768px) {
  .nav-settings-icon {
    display: none;
  }

  .nav-settings-link {
    display: inline;
  }

  header {
    flex-direction: column;
    gap: 12px;
    padding-block: 12px;
    padding-inline: 16px;
    text-align: center;
  }

  h1 {
    font-size: 1.3rem;
  }

  .search-form {
    width: 100%;
    max-width: 100%;
  }

  .search-form .search-box {
    width: 100%;
  }

  .nav-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-inline: 16px;
  }

  .nav-container {
    gap: 24px;
    min-width: max-content;
  }

  .nav-tabs a {
    padding: 12px 0;
    font-size: 0.95rem;
  }

  .content-layout {
    padding-inline-start: 40px;
    padding-inline-end: 16px;
    padding-block: 16px;
    gap: 16px;
  }

  .result {
    margin-bottom: 24px;
  }

  .engine-warning {
    padding: 12px 14px;
  }

  .result > a {
    font-size: 1.1rem;
    word-break: break-word;
  }

  .url {
    font-size: 0.8rem;
    word-break: break-all;
  }

  .desc {
    font-size: 0.9rem;
  }

  .cached {
    font-size: 0.8rem;
  }

  .infobox {
    margin-bottom: 16px;
  }

  .infobox-header {
    padding: 16px;
  }

  .infobox-title {
    font-size: 1.2rem;
  }

  .infobox-main {
    flex-direction: column;
    padding: 16px;
    gap: 12px;
  }

  .infobox-image {
    width: 100%;
    height: auto;
    min-width: unset;
    max-width: 200px;
  }

  .image-results-container {
    padding-inline: 16px;
  }

  .pagination {
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 8px;
  }

  .pagination-btn {
    padding: 10px 14px;
    font-size: 0.85rem;
  }

  .view-home {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 16px;
    min-height: 100vh;
  }

  .view-home .container {
    padding: 0;
    width: 100%;
    max-width: 580px;
  }

  .view-home .hero-logo {
    font-size: 3rem;
    margin-bottom: 24px;
  }

  .view-home .search-input-wrapper {
    margin-bottom: 16px;
  }

  .view-home .search-box {
    width: 100%;
    font-size: 1rem;
    padding: 14px 20px;
  }

  .view-home .buttons {
    gap: 10px;
  }

  .view-home button {
    padding: 12px 20px;
  }
}

@media (max-width: 600px) {
  .content-layout {
    padding-inline-start: 28px;
    padding-inline-end: 16px;
    padding-block: 16px;
  }

  .settings-layout {
    padding: 0;
  }

  header {
    padding-inline: 12px;
    padding-block: 12px;
  }

  .search-box {
    font-size: 0.95rem;
  }

  .view-home .search-box {
    width: 100%;
  }

  .view-home {
    padding: 20px 16px;
  }

  .image-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
  }

  .image-card {
    border-radius: calc(var(--radius) * 1.2);
  }

  .image-info {
    padding: 8px 10px;
  }

  .image-caption {
    font-size: 0.8rem;
  }

  .image-source {
    font-size: 0.7rem;
  }

  .overlay-buttons {
    width: 80%;
  }

  .overlay-btn {
    padding: 6px 12px;
    font-size: 0.75rem;
  }

  .settings-layout {
    padding: 12px;
    display: block;
  }

  .settings-container {
    max-width: 100%;
  }

  .settings-title {
    font-size: 1.4rem;
    margin-bottom: 24px;
  }

  .settings-section {
    padding: 16px;
  }

  .settings-field {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .settings-actions {
    flex-direction: column;
  }

  .settings-actions .btn-primary,
  .settings-actions .btn-secondary {
    width: 100%;
    text-align: center;
  }
}

/* =============================================
   RTL SUPPORT
   ============================================= */
[dir="rtl"] {
  direction: rtl;
  unicode-bidi: embed;
}

[dir="rtl"] header {
  flex-direction: row-reverse;
  direction: ltr;
}

[dir="rtl"] .nav-container {
  flex-direction: row-reverse;
  direction: ltr;
}

[dir="rtl"] .search-box {
  text-align: right;
  direction: rtl;
}

[dir="rtl"] .url {
  text-align: end;
}

[dir="rtl"] .nav-settings-icon {
  margin-inline-start: unset;
  margin-inline-end: auto;
}

[dir="rtl"] .settings-actions .btn-primary {
  margin-inline-end: auto;
}

@media (max-width: 768px) {
  [dir="rtl"] header {
    flex-direction: column;
  }
}