@font-face {
    font-family: 'XM_BiaoHei';
    src: url('fonts/XM_BiaoHei.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_ShuKai';
    src: url('fonts/XM_ShuKai.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_XingShu';
    src: url('fonts/XM_XingShu.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_ZhengBai';
    src: url('fonts/XM_ZhengBai.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_GuFeng';
    src: url('fonts/XM_GuFeng.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_WenJian';
    src: url('fonts/XM_WenJian.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_YaBai';
    src: url('fonts/XM_YaBai.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_ZhengHei';
    src: url('fonts/XM_ZhengHei.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_LiuYe';
    src: url('fonts/XM_LiuYe.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_WenQin';
    src: url('fonts/XM_WenQin.ttf') format('truetype');
}

@font-face {
    font-family: 'XM_YingBi';
    src: url('fonts/XM_YingBi.ttf') format('truetype');
}

:root {
    --bg: #0f0f11;
    --panel: #17171a;
    --text: #e9e9ef;
    --muted: #a2a2ad;
    --accent: #3aa1ff;
    --accent-2: #7b5cff;
    --border: #2a2a2e;
    --card: #141416;
    --shadow: rgba(0, 0, 0, 0.45);
}

body.light {
    --bg: #f5f6f8;
    --panel: #ffffff;
    --text: #0b0c10;
    --muted: #495067;
    --accent: #1f6ef3;
    --accent-2: #5e3bff;
    --border: #d9deea;
    --card: #f3f5f9;
    --shadow: rgba(0, 0, 0, 0.12);
}

* { box-sizing: border-box; }

body {
    font-family: 'XM_ZhengHei', system-ui, -apple-system, Segoe UI, Roboto, Noto Sans, sans-serif;
    margin: 0;
    padding: 0;
    background: radial-gradient(1200px 800px at 10% 0%, rgba(58,161,255,0.08), transparent 40%),
                radial-gradient(1200px 800px at 90% 0%, rgba(123,92,255,0.08), transparent 40%),
                var(--bg);
    color: var(--text);
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    position: sticky;
    top: 0;
    backdrop-filter: blur(8px);
    background: linear-gradient(180deg, rgba(20,20,23,0.92), rgba(20,20,23,0.75));
    border-bottom: 1px solid var(--border);
    z-index: 10;
}

body.light .app-header {
    background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(255,255,255,0.88));
}

.brand-title { font-size: 24px; font-weight: 700; }
.brand-subtitle { font-size: 12px; color: var(--muted); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.view-tabs { display: inline-flex; gap: 6px; margin-right: 8px; }
.view-tabs .ghost.active { border-color: var(--accent); color: var(--accent); }
.font-picker label { font-size: 12px; color: var(--muted); margin-right: 6px; }
.font-picker select { background: var(--panel); color: var(--text); border: 1px solid var(--border); padding: 6px 8px; border-radius: 8px; }

.icon-button { background: transparent; color: var(--text); border: 1px solid var(--border); width: 36px; height: 36px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.icon-button:hover { border-color: var(--accent); color: var(--accent); }

.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: white; border: none; padding: 10px 14px; border-radius: 10px; cursor: pointer; box-shadow: 0 8px 20px var(--shadow); }
.primary:hover { filter: brightness(1.05); }

.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); padding: 8px 10px; border-radius: 10px; cursor: pointer; }
.ghost:hover { border-color: var(--accent); color: var(--accent); }

.app-main { max-width: 1200px; margin: 0 auto; padding: 20px; }
.learn-panel { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 16px; box-shadow: 0 10px 30px var(--shadow); }
.learn-header { display: flex; align-items: center; justify-content: space-between; }
.practice { display: grid; grid-template-columns: 1fr; gap: 8px; margin: 12px 0; }
.practice input#learn-romanized-input { background: var(--card); border: 1px solid var(--border); border-radius: 10px; color: var(--text); padding: 10px 12px; outline: none; }
.practice input#learn-romanized-input::placeholder { color: var(--muted); }
.learn-output { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px; font-size: 28px; min-height: 56px; font-family: 'XM_LiuYe', serif; }
.practice-actions { display: flex; gap: 8px; }
.alpha-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 10px; }
.alpha-item { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 10px; display: grid; gap: 4px; }
.alpha-item .roman { color: var(--muted); font-size: 12px; }
.alpha-item .glyph { font-size: 28px; font-family: 'XM_LiuYe', serif; }

.search-panel { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 16px; box-shadow: 0 10px 30px var(--shadow); }

.search-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; }

.search-input-wrap { display: grid; grid-template-columns: 24px 1fr 36px; align-items: center; gap: 8px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 8px 10px; }
.search-input-wrap input { background: transparent; border: none; outline: none; color: var(--text); font-size: 16px; padding: 6px 0; }

.translit-preview { margin: 6px 2px 0; padding: 8px 10px; background: var(--card); border: 1px dashed var(--border); border-radius: 10px; color: var(--text); font-size: 22px; letter-spacing: 0.5px; }

.search-options { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; align-items: center; }
.field { display: flex; gap: 6px; align-items: center; }
.field label { color: var(--muted); font-size: 12px; }
.field select { background: var(--card); color: var(--text); border: 1px solid var(--border); padding: 6px 8px; border-radius: 8px; }
.checkbox { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: 13px; }

.results-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; color: var(--muted); font-size: 13px; }

.layout { display: grid; grid-template-columns: 1fr; gap: 16px; margin-top: 16px; }

.results { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }

.card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 12px; display: flex; flex-direction: column; gap: 6px; box-shadow: 0 10px 25px var(--shadow); }
.card { position: relative; }
.card .copy-btn { position: absolute; top: 8px; right: 8px; }
.card .row { display: flex; gap: 8px; align-items: baseline; }
.card .label { color: var(--muted); font-size: 12px; min-width: 82px; }
.card .value { font-size: 16px; padding-right: 38px; word-break: break-word; }
.card .actions { display: flex; gap: 8px; margin-top: 8px; }
.badge { display: inline-block; background: rgba(58,161,255,0.18); color: var(--accent); padding: 2px 8px; border-radius: 999px; font-size: 12px; border: 1px solid rgba(58,161,255,0.35); }

mark { background: rgba(122, 186, 255, 0.25); color: inherit; border-radius: 2px; padding: 0 2px; }

/* wordlists sidebar removed */

.overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); display: none; align-items: center; justify-content: center; z-index: 1000; }
.overlay[aria-hidden="false"] { display: flex; }
.overlay-content { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 12px; width: min(90vw, 600px); box-shadow: 0 10px 40px var(--shadow); }
.overlay-toolbar { display: flex; gap: 8px; justify-content: flex-end; margin-bottom: 10px; }
.overlay-text { font-size: 42px; line-height: 1.2; text-align: center; padding: 10px; font-family: 'XM_LiuYe', serif; }

/* vertical text for non-Safari */
.overlay-text.vertical { writing-mode: vertical-rl; text-orientation: upright; -webkit-writing-mode: vertical-rl; }

.app-footer { max-width: 1200px; margin: 24px auto; padding: 12px 20px; display: flex; gap: 12px; align-items: center; color: var(--muted); border-top: 1px solid var(--border); }
.app-footer a { color: var(--muted); }

@media (max-width: 900px) {
    .layout { grid-template-columns: 1fr; }
    .sidebar { position: static; }
}