/* 萃見 PDF 工具箱 — 全站共用樣式（設計 token 唯一真相） */
:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --card-2: #f1f3f8;
  --ink: #1b1f2a;
  --ink-mut: #5f6779;
  --border-soft: #e2e6ef;
  --acc: #d6336c;          /* 品牌主色 */
  --acc-ink: #ffffff;
  --acc-soft: #fde8ef;
  --ok: #2b8a3e;
  --warn: #e67700;
  --bad: #c92a2a;
  --focus: #4c6ef5;
  --shadow: 0 1px 2px rgba(20, 24, 40, .06), 0 6px 20px rgba(20, 24, 40, .06);
  --shadow-lg: 0 10px 40px rgba(20, 24, 40, .16);
  --radius: 14px;
  --radius-sm: 9px;
  --font: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #12141b;
  --card: #1b1e28;
  --card-2: #232735;
  --ink: #e9ecf3;
  --ink-mut: #9aa3b8;
  --border-soft: #2e3343;
  --acc: #f06595;
  --acc-ink: #1b1020;
  --acc-soft: #3a1f2b;
  --ok: #51cf66;
  --warn: #ffa94d;
  --bad: #ff6b6b;
  --focus: #748ffc;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, .5);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ── 頁首 ── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--card) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header .inner {
  max-width: 1200px; margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; gap: 14px;
}
.brand { display: flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 800; font-size: 18px; letter-spacing: .5px; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px;
  background: linear-gradient(135deg, var(--acc), #f76707);
  display: grid; place-items: center; color: #fff;
}
.brand small { font-weight: 500; color: var(--ink-mut); font-size: 13px; letter-spacing: 0; }
.header-nav { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.icon-btn {
  width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--border-soft);
  background: var(--card); display: grid; place-items: center; cursor: pointer; color: var(--ink);
}
.icon-btn:hover { background: var(--card-2); }
.nav-link { padding: 7px 12px; border-radius: 9px; color: var(--ink); font-weight: 600; font-size: 15px; }
.nav-link:hover { background: var(--card-2); text-decoration: none; }
.privacy-pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 99px;
  background: color-mix(in srgb, var(--ok) 14%, transparent); color: var(--ok); font-size: 13px; font-weight: 700;
}
@media (max-width: 640px) {
  .brand small, .header-nav .nav-link, .site-header .privacy-pill { display: none; }
}

/* ── 頁尾 ── */
.site-footer { margin-top: auto; border-top: 1px solid var(--border-soft); color: var(--ink-mut); font-size: 14px; }
.site-footer .inner { max-width: 1200px; margin: 0 auto; padding: 24px 16px; display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }

/* ── 通用 ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; width: 100%; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 20px; border-radius: 11px; border: 1px solid var(--border-soft);
  background: var(--card); color: var(--ink); font-weight: 700; cursor: pointer; font-size: 15px;
  transition: transform .06s, background .15s, box-shadow .15s;
}
.btn:hover { background: var(--card-2); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--acc); border-color: var(--acc); color: var(--acc-ink); box-shadow: 0 4px 14px color-mix(in srgb, var(--acc) 35%, transparent); }
.btn-primary:hover { background: color-mix(in srgb, var(--acc) 88%, #000); }
.btn-lg { min-height: 54px; padding: 12px 30px; font-size: 17px; border-radius: 13px; }
.btn-sm { min-height: 34px; padding: 5px 12px; font-size: 14px; border-radius: 9px; }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-danger { color: var(--bad); }
.card { background: var(--card); border: 1px solid var(--border-soft); border-radius: var(--radius); box-shadow: var(--shadow); }
.muted { color: var(--ink-mut); }
.badge { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; font-weight: 700; background: var(--card-2); color: var(--ink-mut); }

/* ── 首頁 ── */
.hero { text-align: center; padding: 48px 16px 20px; }
.hero h1 { font-size: clamp(28px, 5vw, 46px); line-height: 1.2; margin: 0 0 12px; letter-spacing: .5px; }
.hero h1 em { font-style: normal; background: linear-gradient(90deg, var(--acc), #f76707); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { margin: 0 auto; max-width: 680px; color: var(--ink-mut); font-size: 17px; }
.hero .trust { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 18px; }
.hero .trust span { padding: 5px 12px; border-radius: 99px; background: var(--card); border: 1px solid var(--border-soft); font-size: 14px; font-weight: 600; }
.search-box { max-width: 520px; margin: 22px auto 0; position: relative; }
.search-box input {
  width: 100%; height: 50px; border-radius: 14px; border: 1px solid var(--border-soft); background: var(--card);
  padding: 0 16px 0 44px; font-size: 16px; box-shadow: var(--shadow);
}
.search-box svg { position: absolute; left: 14px; top: 15px; color: var(--ink-mut); }
.cat-tabs { display: flex; gap: 8px; overflow-x: auto; padding: 18px 16px 6px; justify-content: center; flex-wrap: wrap; }
.cat-tabs button {
  border: 1px solid var(--border-soft); background: var(--card); border-radius: 99px; padding: 6px 14px; cursor: pointer; font-weight: 600; font-size: 14px; white-space: nowrap;
}
.cat-tabs button[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.cat-section { margin: 26px 0 8px; }
.cat-section h2 { font-size: 19px; margin: 0 0 12px; display: flex; align-items: center; gap: 10px; }
.cat-section h2::before { content: ""; width: 6px; height: 20px; border-radius: 3px; background: var(--cat, var(--acc)); }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.tool-card {
  display: flex; gap: 12px; align-items: flex-start; padding: 16px; color: var(--ink);
  background: var(--card); border: 1px solid var(--border-soft); border-radius: var(--radius);
  transition: transform .12s, box-shadow .12s, border-color .12s; position: relative;
}
.tool-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--cat) 50%, var(--border-soft)); text-decoration: none; }
.tool-card .ti { flex: 0 0 auto; width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: color-mix(in srgb, var(--cat) 14%, transparent); color: var(--cat); }
.tool-card h3 { margin: 0 0 2px; font-size: 16px; }
.tool-card p { margin: 0; font-size: 14px; color: var(--ink-mut); line-height: 1.5; }
.tool-card.soon { opacity: .6; cursor: default; }
.tool-card.soon:hover { transform: none; box-shadow: none; }
.tool-card .badge { position: absolute; top: 10px; right: 10px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin: 40px 0; }
.features .card { padding: 20px; }
.features h3 { margin: 0 0 6px; font-size: 17px; }
.features p { margin: 0; color: var(--ink-mut); font-size: 15px; }

/* ── 工具頁 ── */
.tool-hero { text-align: center; padding: 28px 16px 8px; }
.tool-hero .ti { width: 56px; height: 56px; border-radius: 16px; margin: 0 auto 10px; display: grid; place-items: center; background: color-mix(in srgb, var(--cat) 14%, transparent); color: var(--cat); }
.tool-hero h1 { margin: 0 0 4px; font-size: clamp(24px, 4vw, 34px); }
.tool-hero p { margin: 0; color: var(--ink-mut); }
.breadcrumb { font-size: 14px; color: var(--ink-mut); margin-bottom: 8px; }

.dropzone {
  margin: 20px auto; max-width: 760px; border: 2px dashed color-mix(in srgb, var(--acc) 45%, var(--border-soft));
  border-radius: 20px; background: var(--card); padding: 44px 20px; text-align: center; cursor: pointer;
  transition: background .15s, border-color .15s, transform .15s;
}
.dropzone:hover, .dropzone.drag { background: var(--acc-soft); border-color: var(--acc); }
.dropzone.drag { transform: scale(1.01); }
.dropzone .dz-icon { width: 64px; height: 64px; margin: 0 auto 10px; border-radius: 18px; background: var(--acc); color: #fff; display: grid; place-items: center; }
.dropzone .dz-title { font-size: 20px; font-weight: 800; margin: 6px 0; }
.dropzone .dz-sub { color: var(--ink-mut); font-size: 14px; }
.dropzone .btn { margin-top: 14px; }
.local-note { text-align: center; color: var(--ok); font-weight: 600; font-size: 14px; margin-top: -6px; }

/* 工作區：左邊預覽、右邊選項；手機改上下 */
.workspace { display: grid; grid-template-columns: 1fr 340px; gap: 18px; margin: 18px 0 30px; align-items: start; }
.workspace .main-pane { min-width: 0; }
.workspace .side-pane { position: sticky; top: 72px; padding: 18px; display: flex; flex-direction: column; gap: 14px; }
.side-pane h2 { font-size: 17px; margin: 0; }
.side-pane .actions { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }
/* 平板直式（iPad 820px 等）仍維持兩欄，只把側欄收窄 */
@media (max-width: 1024px) { .workspace { grid-template-columns: 1fr 300px; gap: 14px; } }
@media (max-width: 759px) {
  .workspace { grid-template-columns: 1fr; }
  .workspace .side-pane { position: static; order: 2; }
}
/* 手機：預覽很長時，底部浮動列帶使用者到設定與輸出按鈕 */
.mobile-jump { display: none; }
@media (max-width: 759px) {
  .mobile-jump.show {
    display: flex; position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); z-index: 60;
    justify-content: center; box-shadow: var(--shadow-lg);
  }
}
.workspace.full { grid-template-columns: 1fr; }

/* 表單欄位 */
.field { display: flex; flex-direction: column; gap: 6px; }
.field > label, .field-label { font-weight: 700; font-size: 14px; }
.field .hint { font-size: 13px; color: var(--ink-mut); }
.input, select.input, textarea.input {
  width: 100%; min-height: 42px; border-radius: 10px; border: 1px solid var(--border-soft); background: var(--bg); padding: 8px 12px;
}
textarea.input { min-height: 90px; resize: vertical; }
input[type="range"] { width: 100%; accent-color: var(--acc); }
input[type="checkbox"], input[type="radio"] { accent-color: var(--acc); width: 18px; height: 18px; flex: none; }
input[type="color"] { width: 44px; height: 36px; border: 1px solid var(--border-soft); border-radius: 8px; background: var(--card); padding: 2px; }
.check { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 15px; }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 4px; background: var(--card-2); padding: 4px; border-radius: 11px; }
.seg button { border: 0; background: transparent; padding: 7px 6px; border-radius: 8px; cursor: pointer; font-weight: 600; font-size: 14px; }
.seg button[aria-pressed="true"] { background: var(--card); box-shadow: var(--shadow); color: var(--acc); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row > .field { flex: 1 1 120px; }
.pos-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; width: 132px; }
.pos-grid button { height: 34px; border: 1px solid var(--border-soft); background: var(--bg); border-radius: 7px; cursor: pointer; }
.pos-grid button[aria-pressed="true"] { background: var(--acc); border-color: var(--acc); }

/* 檔案清單（合併等多檔工具） */
.file-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.file-item {
  background: var(--card); border: 1px solid var(--border-soft); border-radius: 12px; padding: 10px; position: relative;
  display: flex; flex-direction: column; gap: 6px; cursor: grab; user-select: none;
}
.file-item.dragging { opacity: .4; }
.file-item.drop-target { outline: 2px dashed var(--acc); }
.file-item .thumb { aspect-ratio: 3/4; background: var(--card-2); border-radius: 7px; display: grid; place-items: center; overflow: hidden; }
.file-item .thumb canvas, .file-item .thumb img { max-width: 100%; max-height: 100%; box-shadow: 0 1px 4px rgba(0,0,0,.18); background: #fff; }
.file-item .name { font-size: 13px; font-weight: 600; word-break: break-all; line-height: 1.35; max-height: 2.7em; overflow: hidden; }
.file-item .meta { font-size: 12px; color: var(--ink-mut); }
.file-item .x {
  position: absolute; top: -8px; right: -8px; width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--border-soft);
  background: var(--card); cursor: pointer; display: grid; place-items: center; box-shadow: var(--shadow); font-size: 14px; line-height: 1;
}
.file-item .x:hover { background: var(--bad); color: #fff; }
.add-more {
  border: 2px dashed var(--border-soft); border-radius: 12px; display: grid; place-items: center; min-height: 200px; cursor: pointer;
  color: var(--ink-mut); font-weight: 700; background: transparent;
}
.add-more:hover { border-color: var(--acc); color: var(--acc); }

/* 頁面縮圖格（刪頁、擷取、重排、旋轉…） */
.page-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 14px; }
.page-item {
  position: relative; background: var(--card); border: 2px solid var(--border-soft); border-radius: 11px; padding: 8px 8px 4px;
  display: flex; flex-direction: column; align-items: center; gap: 4px; cursor: pointer; user-select: none;
}
.page-item .thumb { width: 100%; aspect-ratio: 3/4; display: grid; place-items: center; overflow: hidden; }
.page-item .thumb canvas { max-width: 100%; max-height: 100%; box-shadow: 0 1px 4px rgba(0,0,0,.18); background: #fff; transition: transform .2s; }
.page-item .pno { font-size: 13px; color: var(--ink-mut); font-weight: 600; }
.page-item.selected { border-color: var(--acc); background: var(--acc-soft); }
.page-item.removed .thumb { opacity: .25; }
.page-item.removed::after { content: "✕"; position: absolute; inset: 0; display: grid; place-items: center; font-size: 48px; color: var(--bad); font-weight: 900; pointer-events: none; }
.page-item .tools { position: absolute; top: 4px; right: 4px; display: flex; gap: 4px; opacity: 0; transition: opacity .15s; }
.page-item:hover .tools, .page-item:focus-within .tools { opacity: 1; }
@media (hover: none) { .page-item .tools { opacity: 1; } }
.page-item .tools button { width: 28px; height: 28px; border-radius: 8px; border: 1px solid var(--border-soft); background: var(--card); cursor: pointer; display: grid; place-items: center; font-size: 14px; }
.page-item .chk { position: absolute; top: 6px; left: 6px; width: 22px; height: 22px; border-radius: 6px; border: 2px solid var(--border-soft); background: var(--card); display: grid; place-items: center; font-size: 13px; color: #fff; }
.page-item.selected .chk { background: var(--acc); border-color: var(--acc); }

/* 大頁面編輯畫布（編輯、簽名、塗黑、裁切） */
.page-stage { display: flex; flex-direction: column; align-items: center; gap: 18px; padding: 10px 0; }
.page-wrap { position: relative; box-shadow: var(--shadow-lg); background: #fff; max-width: 100%; }
.page-wrap canvas.pdf { display: block; max-width: 100%; height: auto; }
.page-wrap .overlay { position: absolute; inset: 0; }
.toolbar { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; padding: 8px; background: var(--card); border: 1px solid var(--border-soft); border-radius: 12px; position: sticky; top: 64px; z-index: 20; box-shadow: var(--shadow); }
.toolbar .tbtn { min-width: 40px; height: 40px; padding: 0 10px; border-radius: 9px; border: 1px solid transparent; background: transparent; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 14px; }
.toolbar .tbtn:hover { background: var(--card-2); }
.toolbar .tbtn[aria-pressed="true"] { background: var(--acc-soft); color: var(--acc); border-color: color-mix(in srgb, var(--acc) 40%, transparent); }
.toolbar .sep { width: 1px; height: 26px; background: var(--border-soft); margin: 0 4px; }

/* 進度遮罩 */
.progress-overlay { position: fixed; inset: 0; z-index: 200; background: color-mix(in srgb, var(--bg) 70%, transparent); backdrop-filter: blur(4px); display: grid; place-items: center; padding: 16px; }
.progress-box { width: min(420px, 100%); padding: 26px; text-align: center; }
.progress-box .spinner { width: 46px; height: 46px; margin: 0 auto 14px; border-radius: 50%; border: 4px solid var(--card-2); border-top-color: var(--acc); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.progress-box .ptext { font-weight: 700; margin-bottom: 12px; }
.bar { height: 8px; background: var(--card-2); border-radius: 99px; overflow: hidden; }
.bar > i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--acc), #f76707); transition: width .2s; }
.progress-box .psub { font-size: 13px; color: var(--ink-mut); margin-top: 8px; min-height: 1.2em; }

/* 完成區 */
.done-panel { max-width: 720px; margin: 24px auto 40px; padding: 30px 22px; text-align: center; }
.done-panel .ok-icon { width: 64px; height: 64px; border-radius: 50%; margin: 0 auto 10px; background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); display: grid; place-items: center; }
.done-panel h2 { margin: 0 0 6px; }
.done-panel .result-files { margin: 18px 0; display: flex; flex-direction: column; gap: 8px; text-align: left; }
.result-file { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--border-soft); border-radius: 11px; background: var(--bg); }
.result-file .rn { flex: 1; min-width: 0; font-weight: 600; word-break: break-all; font-size: 14px; }
.result-file .rs { font-size: 13px; color: var(--ink-mut); white-space: nowrap; }
.done-panel .main-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.next-tools { margin-top: 22px; border-top: 1px solid var(--border-soft); padding-top: 16px; }
.next-tools .row { justify-content: center; }
.next-tools a { padding: 6px 12px; border-radius: 99px; background: var(--card-2); color: var(--ink); font-size: 14px; font-weight: 600; }

/* 提示訊息 */
.toast-wrap { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); z-index: 300; display: flex; flex-direction: column; gap: 8px; width: min(460px, calc(100% - 32px)); }
.toast { padding: 12px 16px; border-radius: 12px; background: var(--ink); color: var(--bg); font-weight: 600; box-shadow: var(--shadow-lg); animation: tin .2s; }
.toast.bad { background: var(--bad); color: #fff; }
.toast.ok { background: var(--ok); color: #fff; }
@keyframes tin { from { transform: translateY(10px); opacity: 0; } }

/* 對話框 */
dialog.modal { border: 1px solid var(--border-soft); border-radius: 16px; background: var(--card); color: var(--ink); padding: 22px; width: min(440px, calc(100% - 32px)); box-shadow: var(--shadow-lg); }
dialog.modal::backdrop { background: rgba(10, 12, 20, .45); }
dialog.modal h3 { margin: 0 0 10px; }
dialog.modal .row { justify-content: flex-end; margin-top: 16px; }

.notice { padding: 12px 14px; border-radius: 11px; background: var(--card-2); font-size: 14px; color: var(--ink-mut); }
.notice.warn { background: color-mix(in srgb, var(--warn) 14%, transparent); color: var(--ink); }

/* ── 觸控裝置：放大小按鈕的可點範圍（手機／平板實測 26px 太難點） ── */
@media (hover: none), (pointer: coarse) {
  .file-item .x { width: 34px; height: 34px; top: -10px; right: -10px; font-size: 16px; }
  .file-item .tools button, .page-item .tools button { width: 34px; height: 34px; }
  input[type="range"] { min-height: 32px; }
}
.side-pane canvas, .done-panel canvas { max-width: 100%; height: auto; }
.next-tools a:hover { text-decoration: none; background: var(--acc-soft); color: var(--acc); }