/* Helper 共用設計：暖白工作面、墨綠操作與易讀的狀態色。 */
:root {
    color-scheme: light;
    --font-sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
    --font-mono: "Cascadia Code", Consolas, monospace;
    --bg-body: #f6f7f2;
    --surface-base: var(--bg-body);
    --surface-card: #fff;
    --surface-card-hover: #fff;
    --surface-elevated: #fff;
    --surface-subtle: #f0f3ed;
    --bg-surface-glass: var(--surface-card);
    --bg-surface-glass-hover: var(--surface-subtle);
    --color-primary: #215c49;
    --color-primary-dark: #174334;
    --color-primary-light: #215c49;
    --primary-soft: #e6efe7;
    --text-main: #243c32;
    --text-primary: var(--text-main);
    --text-muted: #5c6c61;
    --text-secondary: var(--text-muted);
    --text-tertiary: #637368;
    --border-subtle: #dce3d9;
    --border-highlight: #b2c2b4;
    --border-active: var(--color-primary);
    --color-danger: #b43b37;
    --hue-primary: 158;
    --hue-success: 153;
    --hue-warning: 38;
    --hue-danger: 3;
    --accent-emerald: #267148;
    --accent-emerald-light: var(--accent-emerald);
    --accent-emerald-bg: #e6f2e8;
    --accent-emerald-border: #c4dfc9;
    --accent-amber: #8a5a15;
    --accent-amber-light: var(--accent-amber);
    --accent-amber-bg: #faf0da;
    --accent-amber-border: #ead5ab;
    --accent-rose: var(--color-danger);
    --accent-rose-light: var(--accent-rose);
    --accent-rose-bg: #fbece9;
    --accent-rose-border: #ecc8c2;
    --accent-sky: #326b89;
    --accent-sky-light: var(--accent-sky);
    --accent-sky-bg: #e9f1f5;
    --accent-sky-border: #c9dce5;
    --accent-purple: #6b5383;
    --accent-purple-light: var(--accent-purple);
    --accent-purple-bg: #f1edf6;
    --accent-purple-border: #d9cfe5;
    --accent-line: #267148;
    --accent-line-hover: #1e5c3a;
    --accent-line-bg: var(--accent-emerald-bg);
    --accent-line-border: var(--accent-emerald-border);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 6px rgb(30 58 43 / 4%);
    --shadow-md: 0 8px 24px rgb(30 58 43 / 6%);
    --shadow-lg: 0 18px 48px rgb(30 58 43 / 12%);
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
}
body { font-family: var(--font-sans); background: var(--bg-body); color: var(--text-main); }
button, input, select, textarea { font-family: inherit; }
::selection { background: #c8dfcf; color: #173f2f; }
* { scrollbar-color: #a9b9ab var(--surface-subtle); scrollbar-width: thin; }
input, textarea { caret-color: var(--color-primary); }
a:hover { color: var(--color-primary-dark); }
a { text-underline-offset: .2em; }
:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 3px; }
.icon { width: 19px; height: 19px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; vertical-align: -.18em; }
.icon-library { position: absolute; width: 0; height: 0; overflow: hidden; }
.skip-link { position: fixed; top: -100px; left: 16px; padding: 12px 20px; background: var(--color-primary); color: white; z-index: 3000; border-radius: 8px; }
.skip-link:focus { top: 12px; color: white; }

/* 共用導覽讓完整寬度留給工作內容。 */
.navbar { padding: 0 max(32px, calc((100vw - 1376px) / 2)); min-height: 80px; background: #fcfdf9; backdrop-filter: none; border-bottom: 1px solid var(--border-subtle); }
.brand-link { color: var(--color-primary) !important; -webkit-text-fill-color: currentColor !important; font-size: 23px; font-weight: 750; letter-spacing: -.025em; gap: 11px; }
.brand-mark { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 11px; background: var(--color-primary); color: white; font-size: 24px; font-weight: 600; line-height: 1; }
.brand-caption { font-size: 12px; font-weight: 500; color: var(--text-muted); letter-spacing: .04em; border-left: 1px solid var(--border-highlight); padding-left: 12px; margin-left: 3px; }
.nav-links { gap: 8px; }
.nav-link { gap: 8px; border-radius: 8px; padding: 11px 16px; font-size: 14px; }
.nav-link::after { display: none; }
.nav-link:hover { background: var(--surface-subtle); color: var(--color-primary); }
.nav-link.active { background: var(--primary-soft); color: var(--color-primary); font-weight: 700; }
.main-content { padding: 40px 32px 56px; min-width: 0; }
.page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px 32px; flex-wrap: wrap; margin-bottom: 28px; }
.page-header > div:first-child { flex: 1 1 360px; min-width: 0; }
.page-title { font-size: clamp(25px, 2.3vw, 32px); font-weight: 750; letter-spacing: -.025em; line-height: 1.4; margin-bottom: 6px; display: block; text-wrap: balance; }
.page-title .icon { display: none; }
.page-header p { font-size: 14px !important; line-height: 1.8; max-width: 65ch; margin-top: 8px; }
.dashboard-header-buttons, .memos-header-buttons { padding-top: 4px; gap: 8px; }
.section-title { color: var(--text-main); font-size: 18px; margin-bottom: 24px; }
h2, h3 { text-wrap: balance; }
h2 .icon, h3 .icon { color: var(--color-primary); margin-right: 5px; }
.site-footer { color: var(--text-muted); border-top: 1px solid var(--border-subtle); background: transparent; padding: 22px 24px; font-size: 12px; text-align: center; }
.footer-brand { color: var(--color-primary); font-weight: 700; margin-right: 12px; }

/* 工作面保持靜止，互動回饋僅出現在可操作元件。 */
.glass-card { background: var(--surface-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); padding: 28px; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; transition: none; }
.glass-card:hover { background: var(--surface-card); border-color: var(--border-subtle); box-shadow: none; transform: none; }
.glass-card .glass-card { background: var(--surface-subtle); border: none; border-radius: 8px; }
.summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); background: #eaf0e6; border-radius: 14px; padding: 22px 8px; margin-bottom: 32px; }
.summary-grid > .glass-card { background: transparent; border: 0; border-right: 1px solid #d0dcca; border-radius: 0; padding: 0 24px !important; display: flex; flex-direction: column; justify-content: flex-start; gap: 4px; }
.summary-grid > .glass-card:last-child { border-right: 0; }
.summary-grid > .glass-card > div:first-child { color: #4c6350 !important; font-weight: 500; }
.summary-grid > .glass-card > div:first-child > span:last-child { font-size: 11px; align-self: center; }
.summary-grid > .glass-card > div:nth-child(2) { margin-block: 5px 8px !important; }
.summary-grid .icon { width: 16px; height: 16px; margin-right: 4px; }
.memo-summary { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.stat-value, .price-value, .meta-time, code, .table-custom td { font-variant-numeric: tabular-nums; }

/* 頁籤與分類共用操作語言；窄螢幕橫向捲動。 */
.nav-tabs-wrapper { display: flex; flex-wrap: wrap; gap: 4px; padding: 6px; margin-bottom: 24px; background: #e9ede5; border-radius: 10px; max-width: 100%; }
.nav-tab, .cat-tab { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 44px; padding: 10px 15px; border: 1px solid transparent; border-radius: 7px; background: transparent; color: var(--text-muted); font-size: 14px; font-weight: 500; cursor: pointer; white-space: nowrap; transition: background-color var(--transition-fast), color var(--transition-fast); }
.nav-tab:hover, .cat-tab:hover { color: var(--color-primary); background: #f8faf5; }
.nav-tab.active { background: white; color: var(--color-primary); font-weight: 700; box-shadow: var(--shadow-sm); }
.cat-tab { background: var(--surface-subtle); }
.cat-tab.active { background: var(--color-primary); color: white; }
.tab-content-panel { display: none; min-width: 0; }
.tab-content-panel.active { display: block; }
.memo-search-form { flex: 1 1 300px; max-width: 420px; min-width: 0; }
.memo-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 20px; }
.memo-card { min-width: 0; }
.memo-card.is-completed { opacity: 1; background: #f6f8f3; }
.memo-card.is-completed .memo-title { text-decoration: line-through; color: var(--text-muted); }
.memo-card .badge { white-space: normal; }
.memo-card-header { flex-wrap: wrap; gap: 8px; }
.memo-card-header > .d-flex { flex-wrap: wrap; }
.memo-content { font-size: 14px; line-height: 1.8; color: var(--text-muted); white-space: pre-wrap; overflow-wrap: anywhere; margin: 12px 0; }
.detail-actions { position: sticky; bottom: 16px; gap: 12px; z-index: 50; background: #fcfdf9; box-shadow: var(--shadow-md); }
.detail-actions > .d-flex { flex-wrap: wrap; }

/* 操作與輸入採一致的尺寸、焦點與狀態。 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 44px; padding: 10px 18px; border: 1px solid transparent; border-radius: 8px; font-size: 14px; font-weight: 600; line-height: 1.45; box-shadow: none; transition: background-color var(--transition-fast), border-color var(--transition-fast); }
.btn:hover, .btn:active { transform: none; box-shadow: none; }
.btn-primary, .btn-line { background: var(--color-primary); color: white; border-color: var(--color-primary); }
.btn-primary:hover, .btn-line:hover { background: var(--color-primary-dark); color: white; border-color: var(--color-primary-dark); box-shadow: none; }
.btn-secondary { background: var(--surface-card); color: var(--text-main); border-color: var(--border-subtle); }
.btn-secondary:hover { background: var(--surface-subtle); color: var(--color-primary); border-color: var(--border-highlight); }
.btn-danger { background: var(--accent-rose-bg); color: var(--accent-rose); border-color: var(--accent-rose-border); }
.btn-danger:hover { background: #f5dad5; color: #962c28; }
.btn-skyscanner { background: var(--accent-sky); color: white; }
.btn-skyscanner:hover { background: #285773; color: white; }
.btn-sm { padding: 9px 13px; font-size: 13px; min-height: 44px; }
.btn:disabled, .btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn-icon { min-width: 44px !important; min-height: 44px !important; }
.btn-icon:hover { background: var(--accent-rose-bg) !important; color: var(--accent-rose) !important; }
.form-control { background: white; color: var(--text-main); border-color: #bdc9bd; min-height: 46px; border-radius: 8px; font-size: 16px; }
.form-control:focus { background: white; border-color: var(--color-primary); box-shadow: 0 0 0 3px #d9e8dc; }
.form-control::placeholder { color: var(--text-muted); opacity: 1; }
.form-label { color: #405548; font-weight: 600; }
.form-group { min-width: 0; }
small { display: inline-block; line-height: 1.7; margin-top: 5px; }
input[type=checkbox], input[type=radio] { accent-color: var(--color-primary); }
.form-check-input { background: #aab9ab; }
.form-check-input::after { background: white; }
.form-check-input:checked { background: var(--color-primary); }
.form-check-input:checked::after { background: white; }
.font-monospace, code { font-family: var(--font-mono); }
code { overflow-wrap: anywhere; font-size: .9em; }
.validation-summary-valid { display: none !important; }
.validation-summary-errors { display: block !important; background: var(--accent-rose-bg); color: var(--accent-rose); margin-bottom: 24px; }
.validation-summary-errors ul { list-style: disc; padding-left: 24px; }
.field-validation-error { color: var(--accent-rose); }

/* 表格可水平捲動，狀態使用深色文字與淡底。 */
.table-responsive { width: 100%; overflow-x: auto; border: 1px solid var(--border-subtle); border-radius: 9px; background: white; }
.table-custom { width: 100%; min-width: 600px; border-collapse: collapse; text-align: left; font-size: 14px; }
.table-custom thead th { padding: 13px 16px; background: var(--surface-subtle); color: #4b6050; font-size: 12px; font-weight: 600; border-bottom: 1px solid var(--border-subtle); white-space: nowrap; }
.table-custom tbody td { padding: 15px 16px; color: var(--text-main); border-bottom: 1px solid var(--border-subtle); vertical-align: middle; }
.table-custom tbody tr:last-child td { border-bottom: 0; }
.table-custom tbody tr:nth-child(even) { background: #fafbf8; }
.table-custom tbody tr:hover { background: #f0f5ed; }
.table-scroll-hint { display: none; align-items: center; gap: 6px; margin-bottom: 8px; color: var(--text-muted); font-size: 12px; }
.badge, .status-badge, .type-badge { display: inline-flex; align-items: center; gap: 5px; padding: 4px 9px; border: 1px solid transparent; border-radius: 5px; font-size: 12px; font-weight: 600; line-height: 1.5; white-space: nowrap; }
.badge-emerald, .badge-success, .status-active { background: var(--accent-emerald-bg); color: var(--accent-emerald); border-color: var(--accent-emerald-border); }
.badge-amber, .badge-warning { background: var(--accent-amber-bg); color: var(--accent-amber); border-color: var(--accent-amber-border); }
.badge-sky, .badge-info { background: var(--accent-sky-bg); color: var(--accent-sky); border-color: var(--accent-sky-border); }
.badge-rose, .badge-danger { background: var(--accent-rose-bg); color: var(--accent-rose); border-color: var(--accent-rose-border); }
.badge-purple { background: var(--accent-purple-bg); color: var(--accent-purple); border-color: var(--accent-purple-border); }
.badge-muted, .status-inactive, .type-badge { background: var(--surface-subtle); color: var(--text-muted); border-color: var(--border-subtle); }
.reminder-header { gap: 12px; }
.reminder-title { font-size: 18px; overflow-wrap: anywhere; }
.reminder-meta { line-height: 1.8; }
.reminder-card { min-width: 0; }
.flight-card { display: flex; flex-direction: column; justify-content: space-between; padding: 22px; background: white; border: 1px solid var(--border-subtle); border-radius: 12px; min-width: 0; }
.flight-card-dropped { border-color: var(--accent-rose-border); background: #fffaf8; }
.meta-item { flex-wrap: wrap; }

/* 條件區塊隱藏後依內容流向重排，不保留空欄。 */
#createForm, #editForm { max-width: 1120px; margin-inline: auto; }
#createForm > .glass-card, #editForm > .glass-card { margin-bottom: 24px !important; }
.input-group-row { flex-wrap: wrap; }
.input-group-row > input { min-width: min(100%, 180px); }
#create-modal { overflow-y: auto; }
.memo-optional-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.memo-optional-fields > div { min-width: 0; }
#create-modal > .glass-card { max-height: calc(100dvh - 32px); overflow-y: auto; width: min(100%, 600px); }
#messageModal > .glass-card, #confirmModal > .glass-card { max-height: calc(100dvh - 32px); overflow-y: auto; }

@media (max-width: 1200px) {
    .memo-summary { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 24px; }
    .memo-summary > .glass-card:nth-child(3) { border-right: 0; }
    .brand-caption { display: none; }
}
@media (max-width: 1024px) {
    .main-content { padding: 28px 24px 40px; }
    .navbar { padding-inline: 24px; }
    .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 24px; }
    .summary-grid > .glass-card { border-right: 0; padding-inline: 20px !important; }
    .summary-grid > .glass-card:nth-child(odd):not(:last-child) { border-right: 1px solid #d0dcca; }
    .page-header > div:first-child { flex-basis: 100%; }
    .nav-links { gap: 4px; }
    .nav-link { padding-inline: 12px; }
    .nav-tabs-wrapper { flex-wrap: nowrap; overflow-x: auto; }
    .nav-tab { flex-shrink: 0; }
    .table-scroll-hint { display: inline-flex; }
    .reminder-grid { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
}
@media (max-width: 768px) {
    .navbar { min-height: 68px; padding-inline: 20px; }
    .navbar-header { min-height: 68px; }
    .nav-links { background: white; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; margin: 0 0 12px; }
    .nav-links.open { animation: none; }
    .nav-link { width: 100%; justify-content: flex-start; }
    .main-content { padding: 24px 20px 40px; }
    .page-header { gap: 16px; margin-bottom: 24px; }
    .page-title { font-size: 26px; }
    .glass-card { padding: 20px; }
    .summary-grid { margin-bottom: 24px; padding-block: 20px; }
    .summary-grid > .glass-card { padding-inline: 14px !important; }
    .summary-grid > .glass-card > div:first-child { flex-wrap: wrap; gap: 6px; }
    .summary-grid > .glass-card > div:first-child > span:last-child { display: none; }
    .summary-grid > .glass-card > div:nth-child(2) { font-size: 20px !important; line-height: 1.5; }
    .dashboard-header-buttons, .memos-header-buttons { width: 100%; gap: 8px; }
    .dashboard-header-buttons > *, .memos-header-buttons > * { flex: 1 1 140px; }
    .memo-search-form { width: 100%; max-width: none; }
    .nav-tabs-wrapper { margin-inline: 0; margin-bottom: 20px; }
    .nav-tab { padding: 9px 12px; font-size: 13px; }
    .table-custom tbody td { padding: 12px; }
    .page-header > .d-flex { flex-wrap: wrap; }
    #createForm .d-flex, #editForm .d-flex { gap: 12px !important; }
    .target-row > div { gap: 12px !important; }
    .detail-actions { position: static; }
}
@media (max-width: 480px) {
    .main-content, .navbar { padding-inline: 16px; }
    .glass-card { padding: 18px; }
    .page-title { font-size: 25px; }
    .summary-grid { padding-inline: 0; }
    .summary-grid > .glass-card { padding-inline: 12px !important; }
    .summary-grid > .glass-card > div:first-child, .summary-grid > .glass-card > div:last-child { font-size: 12px !important; }
    .memo-summary > .glass-card:last-child { grid-column: 1 / -1; padding-top: 16px !important; border-top: 1px solid #d0dcca; }
    .memo-summary > .glass-card:last-child { flex-direction: row; align-items: center; gap: 12px; flex-wrap: wrap; }
    .memo-summary > .glass-card:last-child > div { margin: 0 !important; }
    .summary-grid > .glass-card > div:last-child { line-height: 1.6; }
    .memo-grid, .reminder-grid { grid-template-columns: minmax(0, 1fr); }
    .input-group-row > input { flex-basis: calc(100% - 40px) !important; }
    #createForm .form-group, #editForm .form-group { flex-basis: 100% !important; min-width: 0 !important; }
    .target-row > div > div { flex-basis: 100% !important; min-width: 0 !important; }
    .btn { overflow-wrap: anywhere; }
    #create-modal > .glass-card { padding: 20px; }
    .memo-optional-fields { grid-template-columns: minmax(0, 1fr); }
    .site-footer { line-height: 1.8; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media (forced-colors: active) {
    .btn, .nav-tab, .cat-tab, .badge, .brand-mark { border: 1px solid ButtonText; }
}