:root {
    color-scheme: dark;
    --color-primary: #E82127;
    --color-primary-dark: #A5171B;
    --color-primary-text: #FF5C5C;
    --color-text: #EAEAEA;
    --color-text-secondary: #AAAAAA;
    --color-text-muted: #777777;
    --color-bg: #0F0F0F;
    --color-card: #1A1A1A;
    --color-card-raised: #222222;
    --color-border: #333333;
    --color-success: #30D158;
    --color-success-bg: #1B2E1C;
    --color-warning: #FF9F0A;
    --color-warning-bg: #2E2412;
    --color-danger-bg: #2E1616;
    --color-info: #0A84FF;

    --font-title-lg: 28px;
    --font-title: 20px;
    --font-headline: 17px;
    --font-body: 17px;
    --font-subheadline: 15px;
    --font-footnote: 13px;
    --font-caption: 12px;

    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-card: 16px;

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.5);

    --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);

    --nav-height: 49px;
    --fab-clearance: 72px;
}

@media (prefers-color-scheme: light) {
    :root {
        color-scheme: light;
        --color-primary-text: #E82127;
        --color-text: #171A20;
        --color-text-secondary: #666666;
        --color-text-muted: #999999;
        --color-bg: #F8F8F8;
        --color-card: #FFFFFF;
        --color-card-raised: #FFFFFF;
        --color-border: #E5E5E5;
        --color-success: #34C759;
        --color-success-bg: #E8F5E9;
        --color-warning: #FF9500;
        --color-warning-bg: #FFF3E0;
        --color-danger-bg: #FDECEA;
        --color-info: #007AFF;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
        --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    }
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Microsoft JhengHei", "Segoe UI", Roboto, sans-serif;
    font-size: var(--font-body);
    max-width: 720px;
    margin: 0 auto;
    padding: var(--space-md);
    padding-bottom: calc(var(--nav-height) + var(--fab-clearance) + env(safe-area-inset-bottom) + var(--space-md));
    background: var(--color-bg);
    color: var(--color-text);
}

a { color: var(--color-primary-text); }

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible {
    outline: 2px solid var(--color-primary-text);
    outline-offset: 2px;
}

h1 { font-size: var(--font-title-lg); font-weight: 700; margin: 0 0 var(--space-md); }
h2 { font-size: var(--font-title); font-weight: 600; margin-top: var(--space-lg); }

.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
    transition: transform 0.2s var(--ease-standard);
}
.card:active { transform: scale(0.98); }

.card-photo {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    background: var(--color-card-raised);
    overflow: hidden;
}
.card-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }

.card-badge {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    padding: 5px 12px;
    border-radius: 999px;
    font-size: var(--font-footnote);
    font-weight: 700;
    line-height: 1.3;
    white-space: nowrap;
    color: #fff;
    background: rgba(0,0,0,0.7);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    box-shadow: var(--shadow-sm);
}
.card-badge.badge-sell { background: rgba(232,33,39,0.9); color: #fff; }
.card-badge.badge-trade { background: rgba(10,132,255,0.9); color: #fff; }

.card-photo.is-sold img { filter: grayscale(1) brightness(0.55); }
.card-sold-stamp { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; z-index: 2; pointer-events: none; }
.card-sold-stamp span { border: 3px solid #fff; color: #fff; font-weight: 800; font-size: 1.05em; padding: 4px 18px; border-radius: 8px; transform: rotate(-10deg); letter-spacing: 2px; background: rgba(0,0,0,0.35); }

.card .body { padding: var(--space-sm) var(--space-md); }
.card .title { font-weight: 600; font-size: 0.95em; margin-bottom: 4px; color: var(--color-text); }
.card .price { color: var(--color-primary-text); font-weight: 700; font-size: 1.4em; }
.card .meta { color: var(--color-text-muted); font-size: 0.8em; margin-top: 4px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: var(--space-md); }
@media (max-width: 480px) {
    .grid { grid-template-columns: repeat(2, 1fr); }
}

.filter-tabs { display: flex; gap: var(--space-sm); margin-bottom: var(--space-md); }
.filter-tabs a {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    text-align: center;
    padding: var(--space-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 0.9em;
}
.filter-tabs a.active { border-color: var(--color-primary); background: var(--color-danger-bg); color: var(--color-primary-text); }
.filter-tabs-scroll { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 4px; }
.filter-tabs-scroll a { flex: 0 0 auto; white-space: nowrap; }

.topbar { display: flex; align-items: center; gap: var(--space-sm); margin-bottom: var(--space-md); flex-wrap: wrap; }
.topbar a { color: inherit; }
.points-badge { color: var(--color-warning); font-weight: 700; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 0.75em; font-weight: 700; margin-bottom: 4px; }
.badge-sell { background: rgba(232,33,39,0.15); color: var(--color-primary-text); }
.badge-trade { background: rgba(21,101,192,0.15); color: #4a90d9; }
.badge-note { background: var(--color-warning-bg); color: var(--color-warning); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 44px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95em;
    padding: 0 var(--space-lg);
    border: none;
    cursor: pointer;
    text-decoration: none;
}
.btn-primary { background: var(--color-primary); color: #fff; transition: filter 0.2s var(--ease-standard); }
.btn-primary:active { filter: brightness(0.85); }
.btn-secondary { background: transparent; color: var(--color-text-secondary); border: 1px solid var(--color-border); }
.btn-line { background: #06C755; color: #fff; }

input[type=text], input[type=file], select, textarea {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 14px;
    min-height: 48px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1em;
    font-family: inherit;
    background: var(--color-card);
    color: var(--color-text);
}
input[type=text]:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(232,33,39,0.2);
}
label { display: block; margin: var(--space-lg) 0 6px; font-weight: 600; color: var(--color-text); }

.required { color: var(--color-primary-text); }

.type-toggle { display: flex; background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 4px; gap: 4px; }
.type-toggle label { flex: 1; text-align: center; border: none; border-radius: calc(var(--radius-md) - 4px); padding: 12px; cursor: pointer; font-weight: 600; margin: 0; color: var(--color-text-secondary); transition: background 0.2s var(--ease-standard), color 0.2s var(--ease-standard); }
.type-toggle input { display: none; }
.type-toggle label:has(input:checked) { background: var(--color-primary); color: #fff; }

.btn-submit { min-height: 56px; width: 100%; font-size: 1.05em; margin-top: var(--space-md); }

.price-input { display: flex; align-items: center; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-card); }
.price-input .price-prefix { padding: 0 0 0 14px; color: var(--color-text-secondary); font-weight: 600; }
.price-input input[type=text] { border: none; background: transparent; box-shadow: none !important; padding-left: 6px; }
.price-input:focus-within { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(232,33,39,0.2); }

.photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); margin: var(--space-sm) 0; }
.photo-cell { position: relative; aspect-ratio: 1; border-radius: var(--radius-sm); overflow: hidden; }
.photo-cell img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-cell .photo-del { position: absolute; top: 4px; right: 4px; width: 22px; height: 22px; border-radius: 50%; background: rgba(0,0,0,0.6); color: #fff; border: none; font-size: 15px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 0; }
.existing-cell.marked-delete { opacity: 0.35; }
.existing-cell.marked-delete .photo-del { background: var(--color-primary); }
.add-cell { display: flex; align-items: center; justify-content: center; border: 2px dashed var(--color-border); background: var(--color-card); cursor: pointer; color: var(--color-text-muted); margin: 0; }
.add-cell .add-plus { font-size: 32px; font-weight: 300; line-height: 1; }
.photo-grid-picker input[type=file] { display: none; }
.photo-hint { color: var(--color-text-muted); font-size: var(--font-caption); margin-top: 4px; }

.notice { border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: var(--space-md); }
.notice-success { background: var(--color-success-bg); color: var(--color-success); border: 1px solid var(--color-success); }
.notice-warning { background: var(--color-warning-bg); color: var(--color-warning); border: 1px solid var(--color-warning); }
.notice-danger { background: var(--color-danger-bg); color: var(--color-primary-text); border: 1px solid var(--color-primary); }
.notice-info { background: var(--color-card-raised); color: var(--color-text-secondary); border: 1px solid var(--color-border); }

.empty-state { text-align: center; padding: var(--space-xl) var(--space-md); color: var(--color-text-muted); }
.empty-state svg { opacity: 0.4; margin-bottom: var(--space-sm); }

.stats { display: flex; gap: var(--space-md); margin-bottom: var(--space-lg); }
.stat { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: var(--space-sm) var(--space-md); text-align: center; flex: 1; }
.stat .num { font-weight: 700; font-size: 1.2em; color: var(--color-text); }
.stat .label { color: var(--color-text-muted); font-size: 0.8em; }

.item-list { list-style: none; padding: 0; }
.item-list li { border: 1px solid var(--color-warning); background: var(--color-warning-bg); border-radius: var(--radius-sm); padding: var(--space-sm) 12px; margin-bottom: var(--space-sm); color: var(--color-text); }
.item-list.muted li { border-color: var(--color-border); background: var(--color-card); }

.menu-list { list-style: none; padding: 0; margin: var(--space-md) 0; border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; background: var(--color-card); }
.menu-list li { border-bottom: 1px solid var(--color-border); }
.menu-list li:last-child { border-bottom: none; }
.menu-list a, .menu-list button {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-md);
    color: var(--color-text);
    text-decoration: none;
    background: none;
    border: none;
    font-size: 1em;
    font-family: inherit;
    text-align: left;
    cursor: pointer;
}
.menu-list a:active, .menu-list button:active { background: var(--color-card-raised); }
.menu-list .chevron { margin-left: auto; color: var(--color-text-muted); }
.menu-list .danger { color: var(--color-primary-text); }

.bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    max-width: 720px;
    margin: 0 auto;
    background: var(--color-card);
    border-top: 1px solid var(--color-border);
    padding-bottom: env(safe-area-inset-bottom);
    z-index: 200;
}
.bottom-nav a {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    height: var(--nav-height);
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.68em;
}
.bottom-nav a.active { color: var(--color-primary-text); }

.fab-post {
    position: fixed;
    right: max(16px, calc(50% - 344px));
    bottom: calc(var(--nav-height) + env(safe-area-inset-bottom) + 16px);
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-md);
    text-decoration: none;
    z-index: 201;
}

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: var(--space-sm) 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.9em; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--color-border); white-space: nowrap; }
th { color: var(--color-text-muted); font-weight: 600; }

.wish-list { display: flex; flex-direction: column; gap: var(--space-sm); margin-top: var(--space-lg); }
.wish-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: 12px 16px; }
.wish-header { display: flex; align-items: center; gap: var(--space-sm); }
.wish-content { margin: 8px 0 0; white-space: pre-wrap; word-break: break-word; }
.wish-actions { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.wish-like-btn { display: inline-flex; align-items: center; gap: 6px; background: var(--color-card-raised); border: 1px solid var(--color-border); border-radius: 999px; padding: 6px 14px; color: var(--color-text-secondary); cursor: pointer; font-size: 0.9em; font-weight: 600; transition: transform 0.1s var(--ease-standard); }
.wish-like-btn:active { transform: scale(0.92); }
.wish-like-btn.liked { background: var(--color-danger-bg); border-color: var(--color-primary); color: var(--color-primary-text); }
.wish-like-btn.liked svg { fill: var(--color-primary-text); }
.wish-del { background: none; border: none; color: var(--color-text-muted); cursor: pointer; padding: 6px; margin-left: auto; }
.wish-likers { display: flex; align-items: center; }
.wish-liker-avatar { display: block; margin-left: -8px; border-radius: 50%; border: 2px solid var(--color-card); overflow: hidden; line-height: 0; }
.wish-liker-avatar:first-child { margin-left: 0; }
.wish-likers-more { font-size: 0.75em; color: var(--color-text-muted); margin-left: 6px; }