/* LATENT — 暗房風格設計系統（深色單一主題）
     主色：萊姆黃綠 = 時間 / 主要行動；冰藍 = 地點；其餘為黑灰階。 */
  :root {
    color-scheme: dark;
    --paper: #0B0B0C;
    --surface: #141416;
    --surface-2: #1D1D20;
    --ink: #F4F1EA;
    --ink-soft: #9A978F;
    --line: #2A2A2E;
    --time: #D9FF4B;
    --time-soft: rgba(217,255,75,0.10);
    --loc: #9DB8FF;
    --loc-soft: rgba(157,184,255,0.12);
    --danger: #FF6B57;
    --focus: #D9FF4B;
    --overlay: rgba(6,6,7,0.82);
    --font-display: "Bricolage Grotesque", "Noto Sans TC", sans-serif;
    --font-body: "Noto Sans TC", -apple-system, BlinkMacSystemFont, "PingFang TC", "Segoe UI", sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
    --ease: cubic-bezier(.2,.7,.2,1);
    box-sizing: border-box;
  }
  * { box-sizing: border-box; }
  html, body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
  }
  body { min-height: 100%; padding: 0 24px 80px; position: relative; }
  /* 細微顆粒，讓純黑底不死板 */
  body::before {
    content: "";
    position: fixed; inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.05;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  }
  .wrap { max-width: 1040px; margin: 0 auto; position: relative; z-index: 1; }
  ::selection { background: var(--time); color: #000; }
  .mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

  /* ---------- 頂欄 ---------- */
  .topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 0;
  }
  .brand { display: flex; align-items: center; gap: 10px; }
  .mark { flex: none; }
  .mark circle { mix-blend-mode: screen; }
  .brand-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.28em;
  }

  /* ---------- Hero ---------- */
  .hero { padding: clamp(24px, 6vw, 64px) 0 clamp(24px, 4vw, 44px); }
  .eyebrow {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--ink-soft);
    margin: 0 0 18px;
  }
  .wordmark {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(56px, 13vw, 150px);
    line-height: 0.9;
    letter-spacing: -0.045em;
    margin: 0;
  }
  .wordmark .dot { color: var(--time); }
  .tagline {
    font-size: clamp(16px, 2.2vw, 22px);
    line-height: 1.6;
    color: var(--ink-soft);
    margin: 22px 0 0;
    max-width: 34em;
  }
  .tagline em { font-style: normal; color: var(--time); }
  .tagline em.loc { color: var(--loc); }

  .how-box { margin-top: 26px; font-size: 14px; color: var(--ink-soft); }
  .how-box summary {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.12em;
    padding: 6px 0;
    list-style: none;
  }
  .how-box summary::-webkit-details-marker { display: none; }
  .how-box summary::before { content: "+"; color: var(--time); transition: transform .25s var(--ease); display: inline-block; }
  .how-box[open] summary::before { transform: rotate(45deg); }
  .how {
    list-style: none;
    margin: 12px 0 0;
    padding: 0;
    max-width: 60ch;
    line-height: 1.8;
    counter-reset: how;
    display: grid;
    gap: 6px;
  }
  .how li { position: relative; padding-left: 38px; counter-increment: how; }
  .how li::before {
    content: "0" counter(how);
    position: absolute; left: 0; top: 0;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--time);
  }

  /* ---------- 控制面板 ---------- */
  .panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: clamp(18px, 3vw, 32px);
    margin-bottom: 56px;
  }
  .dropzone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 120px;
    padding: 24px;
    margin-bottom: 28px;
    position: relative;
    border: 1.5px dashed #3A3A40;
    border-radius: 14px;
    cursor: pointer;
    text-align: center;
    transition: border-color .25s var(--ease), background .25s var(--ease);
  }
  .dropzone:hover, .dropzone:focus-within { border-color: var(--time); background: var(--time-soft); }
  .dropzone input[type="file"] {
    position: absolute;
    width: 1px; height: 1px;
    opacity: 0;
    overflow: hidden;
  }
  .dz-btn {
    font-family: var(--font-display);
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 700;
    letter-spacing: -0.01em;
  }
  .dz-btn::after { content: " ↗"; color: var(--time); }
  .file-status { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); }

  .sliders {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px 48px;
    margin-bottom: 30px;
  }
  @media (max-width: 640px) { .sliders { grid-template-columns: 1fr; } }
  .slider-item label {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 13px;
    color: var(--ink-soft);
    margin-bottom: 14px;
  }
  .slider-item label span.val {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 28px;
    letter-spacing: -0.02em;
    color: var(--ink);
  }
  .slider-item.time label span.val { color: var(--time); }
  .slider-item.loc label span.val { color: var(--loc); }

  input[type="range"] {
    -webkit-appearance: none; appearance: none;
    width: 100%;
    height: 2px;
    background: var(--line);
    border-radius: 2px;
    outline: none;
    margin: 10px 0;
  }
  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 20px; height: 20px;
    border-radius: 50%;
    border: none;
    background: var(--ink);
    cursor: pointer;
    transition: transform .2s var(--ease);
  }
  input[type="range"]::-moz-range-thumb {
    width: 20px; height: 20px; border-radius: 50%; border: none; background: var(--ink); cursor: pointer;
  }
  .slider-item.time input[type="range"]::-webkit-slider-thumb { background: var(--time); }
  .slider-item.loc input[type="range"]::-webkit-slider-thumb { background: var(--loc); }
  .slider-item.time input[type="range"]::-moz-range-thumb { background: var(--time); }
  .slider-item.loc input[type="range"]::-moz-range-thumb { background: var(--loc); }
  input[type="range"]:hover::-webkit-slider-thumb { transform: scale(1.2); }
  input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px rgba(217,255,75,.3); }

  button { font-family: inherit; }
  button.primary {
    font-size: 15px;
    font-weight: 700;
    padding: 14px 30px;
    border-radius: 999px;
    border: none;
    background: var(--time);
    color: #0B0B0C;
    cursor: pointer;
    transition: transform .2s var(--ease), box-shadow .2s var(--ease), opacity .2s;
  }
  button.primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 8px 24px -6px rgba(217,255,75,.45); }
  button.primary:disabled { opacity: 0.25; cursor: default; }
  button.primary:focus-visible, button:focus-visible, .dropzone:focus-within {
    outline: 2px solid var(--focus);
    outline-offset: 3px;
  }
  button.ghost {
    font-size: 13px;
    font-weight: 500;
    padding: 9px 18px;
    border-radius: 999px;
    border: 1px solid #3A3A40;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    transition: border-color .2s, background .2s;
  }
  button.ghost:hover { border-color: var(--ink); background: var(--surface-2); }

  .progress-line { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); margin-top: 18px; }
  .bar { height: 2px; background: var(--line); border-radius: 2px; overflow: hidden; margin-top: 10px; }
  .bar > div { height: 100%; background: var(--time); width: 0%; transition: width 0.15s ease; }

  /* ---------- 結果 ---------- */
  .summary {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
  }
  .summary .count { font-size: 14px; color: var(--ink-soft); }
  .summary .count b { color: var(--ink); font-family: var(--font-display); font-size: 22px; font-weight: 700; margin: 0 2px; }

  .group {
    border-top: 1px solid var(--line);
    padding: 40px 0 36px;
    animation: rise .6s var(--ease) both;
  }
  .group.unknown { border-top-style: dashed; }
  @keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

  .group-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 6px 18px;
    margin-bottom: 22px;
  }
  .group-date {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(30px, 5vw, 52px);
    letter-spacing: -0.03em;
    line-height: 1;
  }
  .group-range { font-size: 13px; color: var(--time); }
  .group-meta { font-size: 13px; color: var(--ink-soft); margin-left: auto; }

  .loc-row { margin-bottom: 26px; }
  .loc-row:last-child { margin-bottom: 0; }
  .loc-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    color: var(--loc);
    background: var(--loc-soft);
    border-radius: 999px;
    padding: 5px 13px;
    margin-bottom: 12px;
  }
  .loc-tag.none { color: var(--ink-soft); background: var(--surface-2); }
  .loc-coord { font-size: 11px; opacity: 0.7; }

  .thumbs {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
    gap: 8px;
  }
  .thumb {
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    background: var(--surface-2);
    cursor: pointer;
    transition: transform .3s var(--ease);
  }
  .thumb:hover { transform: scale(1.03); z-index: 3; }
  .thumb.ng { opacity: 0.4; }
  /* 載入中骨架：緩慢掃過的亮帶 */
  .thumb::before {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(100deg, transparent 20%, rgba(255,255,255,0.07) 50%, transparent 80%);
    background-size: 220% 100%;
    animation: shimmer 1.4s linear infinite;
  }
  .thumb.loaded::before, .thumb.failed::before { display: none; }
  @keyframes shimmer { from { background-position: 150% 0; } to { background-position: -50% 0; } }
  .thumb img, .thumb video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    pointer-events: none;
    opacity: 0;
    transition: opacity .45s var(--ease), transform .5s var(--ease);
  }
  .thumb.loaded img { opacity: 1; }
  .thumb:hover img { transform: scale(1.06); }
  /* 預覽失敗（例如 Chrome 無法解碼 HEVC 影片）：和「載入中」明確區分 */
  .thumb.failed { background: repeating-linear-gradient(135deg, var(--surface-2) 0 8px, #19191C 8px 16px); }
  .thumb .fallback {
    position: absolute; inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 6px 6px 26px;
    text-align: center;
    color: var(--ink-soft);
  }
  .fb-icon { font-size: 22px; line-height: 1; opacity: 0.8; }
  .fb-name {
    font-size: 10px;
    line-height: 1.3;
    word-break: break-all;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .thumb .time-chip {
    position: absolute;
    left: 6px; bottom: 6px;
    font-size: 10.5px;
    background: rgba(11,11,12,0.72);
    backdrop-filter: blur(6px);
    color: var(--ink);
    padding: 2px 8px;
    border-radius: 999px;
    z-index: 2;
  }
  .thumb .time-chip.none-date { background: var(--danger); color: #0B0B0C; font-weight: 700; }
  .thumb.suspicious { outline: 2px solid var(--danger); outline-offset: -2px; }
  .warn-badge, .ng-badge {
    position: absolute;
    top: 6px;
    font-size: 10px;
    font-weight: 700;
    background: var(--danger);
    color: #0B0B0C;
    padding: 1px 7px;
    border-radius: 999px;
    z-index: 2;
  }
  .warn-badge { right: 6px; }
  .ng-badge { left: 6px; }
  .play-badge {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%,-62%);
    width: 30px; height: 30px;
    border-radius: 50%;
    background: rgba(11,11,12,0.6);
    backdrop-filter: blur(6px);
    color: var(--ink);
    font-size: 11px;
    display: flex; align-items: center; justify-content: center;
    padding-left: 2px;
    pointer-events: none;
    z-index: 2;
  }
  .thumb.failed .play-badge { display: none; }

  .advisory {
    font-size: 13px;
    line-height: 1.7;
    color: var(--ink);
    background: var(--time-soft);
    border-left: 3px solid var(--time);
    border-radius: 6px;
    padding: 14px 16px;
    margin: 14px 0 22px;
  }
  .advisory b { color: var(--danger); }
  .empty { font-size: 14px; color: var(--ink-soft); padding: 20px 0; }
  .overflow-x { overflow-x: auto; }

  /* ---------- 放大檢視彈窗 ---------- */
  .modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 100;
  }
  .modal-box {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    width: 100%;
    max-width: 460px;
    max-height: 96vh;
    overflow: hidden;
    position: relative;
    padding: 18px;
    display: flex;
    flex-direction: column;
  }
  /* 直式照片：照片在左、欄位在右 */
  .modal-box.portrait { max-width: 860px; width: auto; flex-direction: row; gap: 24px; }
  .modal-box.portrait .modal-media { flex: 0 0 auto; margin-bottom: 0; max-width: 55%; }
  .modal-box.portrait .modal-media img,
  .modal-box.portrait .modal-media video { max-height: calc(96vh - 36px); max-width: 100%; }
  .modal-box.portrait .modal-info {
    flex: 1 1 280px;
    min-width: 260px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-right: 36px;
  }
  @media (max-width: 640px) {
    .modal-box.portrait { flex-direction: column; max-width: 460px; width: 100%; overflow-y: auto; }
    .modal-box.portrait .modal-media { max-width: 100%; margin-bottom: 14px; }
    .modal-box.portrait .modal-media img,
    .modal-box.portrait .modal-media video { max-height: 40vh; }
    .modal-box.portrait .modal-info { padding-right: 0; min-width: 0; justify-content: flex-start; }
  }
  .modal-info { min-height: 0; }
  .modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px; height: 48px;
    border: 1px solid #3A3A40;
    border-radius: 50%;
    background: rgba(20,20,22,0.7);
    color: var(--ink);
    font-size: 26px;
    line-height: 1;
    padding-bottom: 3px;
    cursor: pointer;
    z-index: 101;
    transition: background .2s, border-color .2s;
  }
  .modal-nav:hover:not(:disabled) { background: var(--time); border-color: var(--time); color: #0B0B0C; }
  .modal-nav.prev { left: 14px; }
  .modal-nav.next { right: 14px; }
  .modal-nav:disabled { opacity: 0.2; cursor: default; }
  .modal-close {
    position: absolute;
    top: 12px; right: 12px;
    width: 36px; height: 36px;
    border-radius: 50%;
    border: 1px solid #3A3A40;
    background: rgba(20,20,22,0.8);
    color: var(--ink);
    font-size: 14px;
    cursor: pointer;
    z-index: 5;
  }
  .modal-close:hover { border-color: var(--ink); }
  .modal-media {
    position: relative;
    width: 100%;
    flex: 0 1 auto;
    background: #000;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 16px;
  }
  /* 切換照片時的載入過渡：先顯示掃光骨架，圖片解碼完成後淡入 */
  .modal-media.loading { min-width: 260px; min-height: 220px; }
  .modal-media.loading::before {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(100deg, transparent 20%, rgba(255,255,255,0.08) 50%, transparent 80%);
    background-size: 220% 100%;
    animation: shimmer 1.2s linear infinite;
  }
  .modal-media img, .modal-media video {
    max-width: 100%;
    max-height: calc(96vh - 340px);
    min-height: 120px;
    object-fit: contain;
    display: block;
    opacity: 0;
    transform: scale(0.985);
    transition: opacity .35s var(--ease), transform .45s var(--ease);
  }
  .modal-media img.ready, .modal-media video.ready { opacity: 1; transform: none; }
  .modal-filename {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ink-soft);
    word-break: break-all;
    margin-bottom: 16px;
  }
  .modal-field { margin-bottom: 12px; }
  .modal-field label { display: block; font-size: 12px; color: var(--ink-soft); margin-bottom: 6px; }
  .modal-field input {
    width: 100%;
    font-family: var(--font-mono);
    font-size: 13px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--paper);
    color: var(--ink);
    transition: border-color .2s;
  }
  .modal-field input:focus { outline: none; border-color: var(--time); }
  .modal-gps-row { display: flex; gap: 10px; }
  .modal-gps-row .modal-field { flex: 1; margin-bottom: 0; }
  .modal-error { font-size: 12.5px; color: var(--danger); margin: 4px 0 8px; min-height: 1em; }
  .modal-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
  }
  .modal-actions button { white-space: nowrap; }
  .modal-actions-right { display: flex; gap: 8px; margin-left: auto; }
  .modal-actions button.primary { padding: 10px 22px; font-size: 14px; }
  button.ng-toggle {
    flex: 1 1 100%;
    font-size: 13px;
    font-weight: 500;
    padding: 9px 16px;
    border-radius: 999px;
    border: 1px solid var(--danger);
    background: transparent;
    color: var(--danger);
    cursor: pointer;
  }
  button.ng-toggle.active { background: var(--danger); color: #0B0B0C; }

  /* ---------- 快速跳轉 ---------- */
  .quicknav {
    position: fixed;
    right: 20px;
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    z-index: 60;
    display: none;
  }
  .quicknav-handle {
    width: 48px; height: 48px;
    border-radius: 50%;
    border: 1px solid #3A3A40;
    background: rgba(20,20,22,0.85);
    backdrop-filter: blur(8px);
    color: var(--ink);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    cursor: pointer;
  }
  .quicknav-list {
    position: absolute;
    right: 0; bottom: 58px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    max-height: 55vh;
    overflow-y: auto;
    min-width: 210px;
    padding: 6px;
    opacity: 0;
    transform: translateY(6px);
    pointer-events: none;
    transition: opacity .2s var(--ease), transform .2s var(--ease);
  }
  .quicknav:hover .quicknav-list,
  .quicknav:focus-within .quicknav-list { opacity: 1; transform: none; pointer-events: auto; }
  .quicknav-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    width: 100%;
    text-align: left;
    font-size: 13px;
    padding: 9px 12px;
    border: none;
    border-radius: 9px;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
  }
  .quicknav-item:hover { background: var(--surface-2); }
  .quicknav-count { color: var(--ink-soft); font-family: var(--font-mono); font-size: 11.5px; flex-shrink: 0; }

  /* ---------- 資料安全說明彈窗 ---------- */
  dialog.privacy {
    width: min(460px, 94vw);
    max-height: 90vh;
    overflow-y: auto;
    background: var(--surface);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 28px;
  }
  dialog.privacy::backdrop { background: var(--overlay); backdrop-filter: blur(8px); }
  .privacy h2 {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 26px;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin: 0 0 18px;
    outline: none;
  }
  .pv-points { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; font-size: 14px; line-height: 1.7; color: var(--ink-soft); }
  .pv-points strong { color: var(--ink); }
  .pv-points li { position: relative; padding-left: 26px; }
  .pv-points li::before { content: "✓"; position: absolute; left: 0; color: var(--time); font-weight: 700; }
  .pv-verify { margin-top: 18px; font-size: 13.5px; color: var(--ink-soft); }
  .pv-verify summary { cursor: pointer; color: var(--loc); }
  .pv-verify ol { margin: 10px 0 0; padding-left: 1.4em; display: grid; gap: 4px; line-height: 1.6; }
  .privacy kbd {
    font: 12px var(--font-mono);
    border: 1px solid #3A3A40;
    border-bottom-width: 2px;
    border-radius: 5px;
    padding: 0 5px;
    background: var(--surface-2);
  }
  .pv-actions { margin: 22px 0 0; display: flex; justify-content: flex-end; }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
  }