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

/* ─────────────────────────────────────────
   ── Dark theme (default)
───────────────────────────────────────── */
:root,
[data-theme="dark"] {
  --bg: #1a1b26; /* theme-D.svg の背景色に合わせた */
  --surface: rgba(255, 255, 255, 0.07);
  --surface-h: rgba(255, 255, 255, 0.13);
  --border: rgba(255, 255, 255, 0.11);
  --text: #e8eaf0;
  --muted: rgba(232, 234, 240, 0.55);
  --accent: #5b8dee;
  --accent-glow: rgba(91, 141, 238, 0.35);
  --danger: #e05c6b;
  --radius: 14px;
  --modal-bg: #1a1d27;
  --modal-shadow: rgba(0, 0, 0, 0.6);
  --settings-btn-bg: rgba(255, 255, 255, 0.07);
}

/* ─────────────────────────────────────────
   ── Light theme
───────────────────────────────────────── */
[data-theme="light"] {
  --bg: #fff8f2; /* theme-L.svg の背景色に合わせた */
  --surface: rgba(255, 255, 255, 0.55);
  --surface-h: rgba(255, 255, 255, 0.8);
  --border: rgba(80, 40, 0, 0.14);
  --text: #1a1208;
  --muted: rgba(26, 18, 8, 0.6);
  --accent: #3b6fd4;
  --accent-glow: rgba(59, 111, 212, 0.25);
  --danger: #d0455a;
  --radius: 14px;
  --modal-bg: #ffffff;
  --modal-shadow: rgba(0, 0, 0, 0.18);
  --settings-btn-bg: rgba(255, 255, 255, 0.65);
}

/* ─────────────────────────────────────────
   ── Base
───────────────────────────────────────── */
html,
body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "DM Sans", sans-serif;
  font-weight: 400;
  overflow-x: hidden;
  transition:
    background 0.3s ease,
    color 0.3s ease;
}

/* ─────────────────────────────────────────
   ── Background: theme-D.svg / theme-L.svg
───────────────────────────────────────── */
[data-theme="dark"] body {
  background-image: url("theme-D.svg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

[data-theme="light"] body {
  background-image: url("theme-L.svg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

/* ─────────────────────────────────────────
   ── Layout
───────────────────────────────────────── */
#app {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* ─────────────────────────────────────────
   ── Clock
───────────────────────────────────────── */
#clock {
  font-family: "Space Mono", monospace;
  font-size: clamp(64px, 10vw, 110px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 36px;
  user-select: none;
  text-shadow: 0 0 60px rgba(91, 141, 238, 0.25);
}

[data-theme="light"] #clock {
  text-shadow: 0 2px 24px rgba(200, 100, 0, 0.18);
}

/* ─────────────────────────────────────────
   ── Search
───────────────────────────────────────── */
#search-wrap {
  position: relative;
  width: 100%;
  max-width: 560px;
  margin-bottom: 56px;
}

#search-container {
  position: relative;
  display: flex;
  align-items: center;
}

#search-icon {
  position: absolute;
  left: 20px;
  width: 18px;
  height: 18px;
  color: var(--muted);
  z-index: 2;
}

#search {
  width: 100%;
  padding: 16px 48px 16px 52px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text);
  font-family: "DM Sans", sans-serif;
  font-size: 17px;
  font-weight: 400;
  outline: none;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition:
    border-color 0.2s,
    box-shadow 0.2s,
    background 0.2s;
}

#search::placeholder {
  color: var(--muted);
}

#search:focus {
  border-color: var(--accent);
  background: var(--surface-h);
  box-shadow:
    0 0 0 3px var(--accent-glow),
    0 4px 20px rgba(0, 0, 0, 0.15);
}

#search-clear {
  position: absolute;
  right: 16px;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 50%;
  line-height: 1;
  transition:
    color 0.15s,
    background 0.15s;
}

#search-clear:hover {
  color: var(--text);
  background: var(--surface-h);
}

#search::-webkit-search-cancel-button {
  -webkit-appearance: none;
  appearance: none;
}

/* ─────────────────────────────────────────
   ── Shortcuts grid
───────────────────────────────────────── */
#shortcuts {
  width: 100%;
  max-width: 780px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 14px;
}

/* ─────────────────────────────────────────
   ── Tile
───────────────────────────────────────── */
.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: grab;
  text-decoration: none;
  color: var(--text);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition:
    background 0.18s,
    border-color 0.18s,
    transform 0.18s,
    box-shadow 0.18s,
    opacity 0.18s;
  min-height: 130px;
  user-select: none;
}

.tile:hover {
  background: var(--surface-h);
  border-color: rgba(128, 128, 128, 0.3);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .tile:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.tile.dragging {
  opacity: 0.35;
  cursor: grabbing;
  transform: scale(0.96);
}

.tile.drag-over {
  border-color: var(--accent);
  background: rgba(91, 141, 238, 0.08);
  box-shadow: 0 0 0 2px var(--accent-glow);
  transform: scale(1.04);
}

.tile img {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  object-fit: contain;
  flex-shrink: 0;
}

.tile-fallback {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--surface-h);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}

.tile-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  width: 100%;
  padding: 0 4px;
  transition: color 0.18s;
}

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

[data-theme="light"] .tile-name {
  color: var(--text); /* ライトテーマでは常に濃い色 */
  opacity: 0.75;
}

[data-theme="light"] .tile:hover .tile-name {
  opacity: 1;
}

/* ─────────────────────────────────────────
   ── Delete button
───────────────────────────────────────── */
.tile-del {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(224, 92, 107, 0);
  border: none;
  color: transparent;
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background 0.15s,
    color 0.15s;
  z-index: 2;
}

.tile:hover .tile-del {
  background: rgba(224, 92, 107, 0.18);
  color: var(--danger);
}

.tile-del:hover {
  background: var(--danger) !important;
  color: #fff !important;
}

/* ─────────────────────────────────────────
   ── Add button
───────────────────────────────────────── */
#add-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 12px 14px;
  background: transparent;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--muted);
  font-family: "DM Sans", sans-serif;
  font-size: 12px;
  font-weight: 500;
  min-height: 130px;
  transition:
    border-color 0.18s,
    color 0.18s,
    background 0.18s,
    transform 0.18s;
}

#add-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(91, 141, 238, 0.06);
  transform: translateY(-3px);
}

#add-btn svg {
  opacity: 0.6;
  transition: opacity 0.18s;
}
#add-btn:hover svg {
  opacity: 1;
}

/* ─────────────────────────────────────────
   ── Settings Button（鉛筆アイコン）
───────────────────────────────────────── */
#settings-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--settings-btn-bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  transition: all 0.2s ease;
  z-index: 10;
}

#settings-btn:hover {
  background: var(--surface-h);
  color: var(--text);
  transform: rotate(15deg) scale(1.08);
  border-color: var(--accent);
}

#settings-btn svg {
  width: 18px;
  height: 18px;
}

/* ─────────────────────────────────────────
   ── Modal
───────────────────────────────────────── */
dialog#shortcut-modal,
dialog#settings-modal {
  border: none;
  background: transparent;
  padding: 0;
  margin: auto;
  overflow: visible;
}

dialog#shortcut-modal::backdrop,
dialog#settings-modal::backdrop {
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

[data-theme="light"] dialog#shortcut-modal::backdrop,
[data-theme="light"] dialog#settings-modal::backdrop {
  background: rgba(80, 40, 0, 0.25);
}

#modal {
  background: var(--modal-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  width: calc(100vw - 48px);
  max-width: 420px;
  box-shadow: 0 20px 60px var(--modal-shadow);
  display: block;
}

dialog#shortcut-modal[open],
dialog#settings-modal[open] {
  animation: modal-in 0.25s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

#modal h2 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 24px;
  color: var(--text);
}

/* フィールド */
.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 7px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

[data-theme="light"] .field label {
  color: var(--text);
  opacity: 0.65;
}

.field input[type="text"],
.field input[type="url"] {
  width: 100%;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: "DM Sans", sans-serif;
  font-size: 15px;
  outline: none;
  transition:
    border-color 0.18s,
    box-shadow 0.18s;
}

.field input[type="text"]:focus,
.field input[type="url"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ─────────────────────────────────────────
   ── Theme Switcher
───────────────────────────────────────── */
#theme-switcher {
  display: flex;
  gap: 8px;
}

.theme-option {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 8px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  color: var(--muted);
  font-family: "DM Sans", sans-serif;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition:
    border-color 0.18s,
    color 0.18s,
    background 0.18s,
    box-shadow 0.18s;
}

.theme-option svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.theme-option:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(91, 141, 238, 0.06);
}

.theme-option.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(91, 141, 238, 0.1);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

[data-theme="light"] .theme-option {
  color: var(--text);
  opacity: 0.75;
}

[data-theme="light"] .theme-option.active {
  opacity: 1;
}

/* ─────────────────────────────────────────
   ── Background upload row
───────────────────────────────────────── */
#bg-upload-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

#bg-upload-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition:
    border-color 0.15s,
    color 0.15s,
    background 0.15s;
}

[data-theme="light"] #bg-upload-label {
  color: var(--text);
}

#bg-upload-label:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(91, 141, 238, 0.06);
}

#bg-upload-label svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* ファビコン */
#favicon-upload-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

#favicon-preview-container {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  background: var(--surface);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}

#favicon-preview img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

#favicon-upload-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

#favicon-upload-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  text-transform: none;
  letter-spacing: 0;
  width: fit-content;
  transition:
    border-color 0.15s,
    color 0.15s,
    background 0.15s;
}

[data-theme="light"] #favicon-upload-label {
  color: var(--text);
}

#favicon-upload-label:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(91, 141, 238, 0.06);
}

#favicon-upload-label svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
}

#favicon-hint {
  font-size: 11px;
  color: var(--muted);
  opacity: 0.65;
  line-height: 1.5;
}

[data-theme="light"] #favicon-hint {
  opacity: 0.8;
}

/* ─────────────────────────────────────────
   ── Modal actions
───────────────────────────────────────── */
#modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 24px;
  justify-content: flex-end;
}

.btn {
  padding: 10px 22px;
  border-radius: 100px;
  border: none;
  font-family: "DM Sans", sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition:
    background 0.15s,
    transform 0.1s;
}

.btn:active {
  transform: scale(0.97);
}

.btn-ghost {
  background: var(--surface);
  color: var(--muted);
}

[data-theme="light"] .btn-ghost {
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--surface-h);
  color: var(--text);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  filter: brightness(1.1);
}

/* ─────────────────────────────────────────
   ── Scrollbar
───────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}