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

:root {
  --bg: #f7f7f5;
  --surface: rgba(255, 255, 255, 0.72);
  --card-bg: rgba(0, 0, 0, 0.02);
  --card-bg-hover: rgba(0, 0, 0, 0.05);
  --text: #1a1a1a;
  --text-secondary: #6b6b6b;
  --text-tertiary: #999999;
  --border: #e0e0e0;
  --border-focus: #7d8a99;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-focus: 0 1px 2px rgba(0, 0, 0, 0.04);
  --accent: #7d8a99;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111111;
    --surface: rgba(30, 30, 30, 0.72);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-bg-hover: rgba(255, 255, 255, 0.07);
    --text: #e8e8e8;
    --text-secondary: #8a8a8a;
    --text-tertiary: #5a5a5a;
    --border: #2a2a2a;
    --border-focus: #8a99a8;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-focus: 0 1px 2px rgba(0, 0, 0, 0.2);
    --accent: #8a99a8;
  }
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.4s ease, color 0.4s ease;
  position: relative;
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--bg);
  transition: background 0.4s ease;
}

/* ===== Wallpaper Mode ===== */
body.wallpaper-enabled {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

body.wallpaper-enabled::before {
  background: rgba(0, 0, 0, 0.12);
}

body.wallpaper-enabled .main-content {
  --text: #f7f7f7;
  --text-secondary: #c0c0c0;
  --text-tertiary: #888888;
  --surface: rgba(20, 20, 20, 0.45);
  --card-bg: rgba(255, 255, 255, 0.08);
  --card-bg-hover: rgba(255, 255, 255, 0.14);
  --border: rgba(255, 255, 255, 0.18);
  --border-focus: rgba(255, 255, 255, 0.5);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
  --shadow-focus: 0 4px 24px rgba(0, 0, 0, 0.15);
}

body.wallpaper-enabled .site-footer {
  color: #a0a0a0;
}

@media (prefers-color-scheme: light) {
  body.wallpaper-enabled .search-input {
    color: #1a1a1a;
  }

  body.wallpaper-enabled .search-input::placeholder {
    color: #999999;
  }

  body.wallpaper-enabled .search-suggestions {
    color: #1a1a1a;
  }

  body.wallpaper-enabled .suggestion-item {
    color: #6b6b6b;
  }

  body.wallpaper-enabled .suggestion-item:hover,
  body.wallpaper-enabled .suggestion-item[aria-selected="true"] {
    background: rgba(0, 0, 0, 0.05);
    color: #1a1a1a;
  }
}

/* ===== Layout ===== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
}

/* ===== Search Section ===== */
.search-container {
  width: 100%;
  margin-bottom: 36px;
}

.search-wrapper {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.15s ease;
}

.search-icon:hover {
  color: var(--text-secondary);
}

.engine-picker {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
  outline: none;
  z-index: 10;
}

.engine-picker:hover,
.engine-picker:focus-visible,
.engine-picker[aria-expanded="true"] {
  color: var(--text);
  background: var(--card-bg);
}

.engine-picker-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
}

.engine-options {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 140px;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-focus);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 60;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.engine-options[hidden] {
  display: none;
}

.engine-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  outline: none;
  text-align: left;
}

.engine-option:hover,
.engine-option:focus-visible,
.engine-option[aria-selected="true"] {
  background: var(--card-bg-hover);
  color: var(--text);
}

.engine-option-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.engine-icon-img {
  width: 18px;
  height: 18px;
  display: block;
  object-fit: contain;
}

.search-input {
  width: 100%;
  padding: 16px 48px 16px 56px;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  box-shadow: var(--shadow);
}

@media (prefers-color-scheme: dark) {
  .search-input {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

.search-input:focus {
  outline: none;
}

/* ===== Search Suggestions ===== */
.search-suggestions {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  list-style: none;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-focus);
  max-height: 320px;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 50;
  padding: 6px 0;
}

@media (prefers-color-scheme: dark) {
  .search-suggestions {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }
}

.search-suggestions::-webkit-scrollbar {
  width: 6px;
}

.search-suggestions::-webkit-scrollbar-track {
  background: transparent;
  margin: 10px 0;
}

.search-suggestions::-webkit-scrollbar-thumb {
  background: var(--text-tertiary);
  border-radius: 3px;
  opacity: 0.4;
}

.search-suggestions[hidden] {
  display: none;
}

.suggestion-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
}

.suggestion-item span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.suggestion-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  border-radius: 3px;
  object-fit: contain;
}

.suggestion-item:hover,
.suggestion-item[aria-selected="true"] {
  background: var(--card-bg-hover);
  color: var(--text);
}

.suggestion-item mark {
  background: transparent;
  color: var(--text);
  font-weight: 500;
}

/* ===== Quick Links ===== */
.quick-links {
  width: 100%;
  border-radius: 16px;
  padding: 12px 12px 16px;
}

.links-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-content: flex-start;
  gap: 4px;
}

.links-grid--sparse {
  justify-content: center;
}

.link-card.hidden {
  display: none;
}

.link-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0 10px;
  height: 32px;
  flex-shrink: 0;
  text-decoration: none;
  color: var(--text);
  background: transparent;
  border: none;
  border-radius: 8px;
  transition: background 0.2s ease;
  outline: none;
}

.link-card:hover,
.link-card:focus-visible {
  background: var(--card-bg-hover);
}

.link-icon {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  object-fit: contain;
  flex-shrink: 0;
}

.link-name {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== Links Pagination ===== */
.links-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}

.links-pagination[hidden] {
  display: none;
}

.pagination-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: var(--text-tertiary);
  opacity: 0.3;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.pagination-dot:hover {
  opacity: 0.6;
}

.pagination-dot.active {
  opacity: 1;
  transform: scale(1.3);
}

/* ===== Footer ===== */
.site-footer {
  text-align: center;
  padding: 24px 20px;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  letter-spacing: 0.03em;
}

/* ===== Wallpaper Toggle ===== */
.wallpaper-toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.wallpaper-toggle:hover,
.wallpaper-toggle:focus-visible {
  border-color: var(--border-focus);
  color: var(--text);
  outline: none;
}

.wallpaper-toggle svg {
  width: 18px;
  height: 18px;
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .main-content {
    padding: 32px 24px;
  }

  .search-input {
    padding: 16px 44px 16px 50px;
    font-size: 1rem;
  }

  .engine-picker {
    width: 30px;
    height: 30px;
  }

  .links-grid {
    gap: 3px;
  }

  .link-card {
    padding: 0 8px;
    height: 28px;
    gap: 4px;
  }

  .link-icon {
    width: 16px;
    height: 16px;
  }

  .link-name {
    font-size: 0.75rem;
  }

  .wallpaper-toggle {
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
  }
}

@media (max-width: 360px) {
  .links-grid {
    gap: 2px;
  }
}

/* ===== Sites Toggle Button ===== */
.sites-toggle {
  position: fixed;
  top: 24px;
  left: 24px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid transparent;
  border-radius: 50%;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
  outline: none;
}

.sites-toggle:hover,
.sites-toggle:focus-visible {
  background: var(--card-bg);
  border-color: var(--border);
  color: var(--text);
}

.sites-toggle svg {
  width: 16px;
  height: 16px;
}

/* ===== Sites Modal ===== */
.sites-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.sites-modal.is-open {
  display: flex;
}

.sites-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.sites-modal-content {
  position: relative;
  width: 100%;
  max-width: 940px;
  max-height: 80vh;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: sites-modal-in 0.2s ease;
}

@keyframes sites-modal-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.sites-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sites-modal-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.sites-modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  outline: none;
}

.sites-modal-close:hover,
.sites-modal-close:focus-visible {
  background: var(--card-bg-hover);
  color: var(--text);
}

.sites-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 24px 24px;
  scrollbar-width: thin;
  scrollbar-color: var(--text-tertiary) transparent;
}

.sites-modal-body::-webkit-scrollbar {
  width: 6px;
}

.sites-modal-body::-webkit-scrollbar-track {
  background: transparent;
}

.sites-modal-body::-webkit-scrollbar-thumb {
  background: var(--text-tertiary);
  border-radius: 3px;
  opacity: 0.4;
}

/* ===== Sites Groups ===== */
.sites-group {
  margin-bottom: 22px;
}

.sites-group:last-child {
  margin-bottom: 0;
}

.sites-group-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.sites-group-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sites-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 0.88rem;
  color: var(--text);
  text-decoration: none;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
  min-width: 0;
}

.sites-link:hover,
.sites-link:focus-visible {
  background: var(--card-bg-hover);
  border-color: var(--border-focus);
  color: var(--text);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  outline: none;
}

.sites-link-icon {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sites-link-icon-img {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  object-fit: contain;
}

.sites-link-fallback {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--card-bg-hover);
  color: var(--text-secondary);
  font-size: 0.65rem;
  font-weight: 700;
  line-height: 1;
}

.sites-no-results {
  margin: 8px 0 0;
  font-size: 0.9rem;
  color: var(--text-tertiary);
  text-align: center;
}

/* ===== Wallpaper Mode Overrides ===== */
body.wallpaper-enabled .quick-links {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

@media (prefers-color-scheme: light) {
  body.wallpaper-enabled .quick-links {
    background: rgba(255, 255, 255, 0.65);
  }

  body.wallpaper-enabled .quick-links .link-name {
    color: #6b6b6b;
  }
}

@media (prefers-color-scheme: dark) {
  body.wallpaper-enabled .quick-links {
    background: rgba(0, 0, 0, 0.3);
  }
}

@media (prefers-color-scheme: light) {
  body.wallpaper-enabled .sites-modal-content {
    background: rgba(255, 255, 255, 0.93);
    border-color: rgba(255, 255, 255, 0.3);
  }

  body.wallpaper-enabled .sites-link {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.08);
    color: #333;
  }

  body.wallpaper-enabled .sites-link:hover,
  body.wallpaper-enabled .sites-link:focus-visible {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.15);
    color: #111;
  }

  body.wallpaper-enabled .sites-modal-header {
    border-bottom-color: rgba(0, 0, 0, 0.08);
  }

  body.wallpaper-enabled .sites-link-fallback {
    background: rgba(0, 0, 0, 0.06);
    color: #666;
  }
}

@media (prefers-color-scheme: dark) {
  body.wallpaper-enabled .sites-modal-content {
    background: rgba(20, 20, 20, 0.96);
    border-color: rgba(255, 255, 255, 0.12);
  }

  body.wallpaper-enabled .sites-link {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
    color: #e0e0e0;
  }

  body.wallpaper-enabled .sites-link:hover,
  body.wallpaper-enabled .sites-link:focus-visible {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.3);
    color: #f7f7f7;
  }

  body.wallpaper-enabled .sites-modal-header {
    border-bottom-color: rgba(255, 255, 255, 0.12);
  }

  body.wallpaper-enabled .sites-link-fallback {
    background: rgba(255, 255, 255, 0.14);
    color: #f0f0f0;
  }
}

@media (prefers-color-scheme: light) {
  body.wallpaper-enabled .sites-toggle {
    background: rgba(255, 255, 255, 0.65);
    border-color: rgba(255, 255, 255, 0.3);
    color: #555;
  }

  body.wallpaper-enabled .sites-toggle:hover,
  body.wallpaper-enabled .sites-toggle:focus-visible {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(255, 255, 255, 0.5);
    color: #111;
  }
}

@media (prefers-color-scheme: dark) {
  body.wallpaper-enabled .sites-toggle {
    background: rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.12);
    color: #c0c0c0;
  }

  body.wallpaper-enabled .sites-toggle:hover,
  body.wallpaper-enabled .sites-toggle:focus-visible {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.18);
    color: #f7f7f7;
  }
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .sites-toggle {
    top: 16px;
    left: 16px;
    width: 30px;
    height: 30px;
  }

  .sites-modal {
    padding: 16px;
    align-items: flex-end;
  }

  .sites-modal-content {
    max-height: 85vh;
    border-radius: 16px 16px 0 0;
  }

  .sites-modal-header {
    padding: 16px 18px 10px;
  }

  .sites-modal-body {
    padding: 12px 18px 18px;
  }
}