:root {
    --bg: #f4efe6;
    --surface: rgba(255, 252, 247, 0.92);
    --line: rgba(113, 84, 57, 0.18);
    --text: #2a1d14;
    --muted: #725947;
    --accent: #c44d2d;
    --accent-strong: #9e3417;
    --success: #2f8f62;
    --danger: #b33b27;
    --shadow: 0 20px 45px rgba(93, 61, 34, 0.12);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(196, 77, 45, 0.18), transparent 28%),
        radial-gradient(circle at bottom right, rgba(47, 143, 98, 0.16), transparent 24%),
        var(--bg);
    min-height: 100vh;
}

a { color: var(--accent-strong); text-decoration: none; }
button, input, textarea, select { font: inherit; }

.page-shell { max-width: 1220px; margin: 0 auto; padding: 28px 20px 48px; }
.topbar { display: flex; justify-content: space-between; gap: 20px; align-items: flex-start; margin-bottom: 22px; }
.topbar h1, .hero-card h2, .panel-card h3, .todo-title { font-family: Georgia, "Times New Roman", serif; }
.eyebrow { margin: 0 0 8px; font-size: 12px; letter-spacing: 0.18em; color: var(--muted); text-transform: uppercase; }
.topbar h1 { margin: 0; font-size: 34px; }
.topbar-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; justify-content: flex-end; }
.user-chip { background: rgba(255, 255, 255, 0.65); border: 1px solid var(--line); border-radius: 999px; padding: 10px 16px; display: flex; flex-direction: column; min-width: 140px; }
.user-chip small { color: var(--muted); }
.nav-links { display: flex; gap: 10px; flex-wrap: wrap; }
.nav-links a, .ghost-button, .primary-button, .mini-button, .danger-button, .secondary-button {
    border-radius: 999px;
    padding: 10px 16px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: 0.2s ease;
}
.nav-links a, .ghost-button, .secondary-button { background: rgba(255, 255, 255, 0.7); border-color: var(--line); color: var(--text); }
.primary-button { background: linear-gradient(135deg, var(--accent), #da7b3e); color: #fff; }
.danger-button { background: linear-gradient(135deg, var(--danger), #d56b47); color: #fff; }
.mini-button { background: rgba(196, 77, 45, 0.12); color: var(--accent-strong); }
.nav-links a:hover, .ghost-button:hover, .primary-button:hover, .danger-button:hover, .mini-button:hover, .secondary-button:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.flash { border-radius: 18px; padding: 14px 18px; margin-bottom: 20px; border: 1px solid var(--line); background: var(--surface); }
.flash-success { border-color: rgba(47, 143, 98, 0.28); color: var(--success); }
.flash-error { border-color: rgba(179, 59, 39, 0.28); color: var(--danger); }
.login-hero, .dashboard-grid { display: grid; grid-template-columns: 1.2fr 0.9fr; gap: 20px; }
.single-panel { grid-template-columns: minmax(320px, 480px); justify-content: center; }
.hero-card, .panel-card, .stat-card, .todo-card, .group-card { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); }
.hero-card, .panel-card, .group-card { padding: 26px; }
.hero-card h2 { margin: 0 0 14px; font-size: 42px; line-height: 1.1; }
.hero-text { color: var(--muted); font-size: 16px; line-height: 1.7; }
.hero-list { margin: 20px 0 0; padding-left: 18px; color: var(--text); line-height: 1.8; }
.stack-form { display: grid; gap: 14px; }
.stack-form label { display: grid; gap: 6px; }
.stack-form span, .section-label { color: var(--muted); font-size: 14px; }
input, textarea, select { width: 100%; border-radius: 16px; border: 1px solid rgba(113, 84, 57, 0.24); padding: 12px 14px; background: rgba(255, 255, 255, 0.78); }
.hint-box { margin-top: 18px; padding: 14px 16px; border-radius: 18px; background: rgba(196, 77, 45, 0.09); }
.login-notice { margin: 14px 0 18px; color: var(--accent-strong); }
.overview-strip { display: grid; grid-template-columns: repeat(1, minmax(0, 1fr)); gap: 16px; margin-bottom: 20px; max-width: 260px; }
.filter-panel { margin-bottom: 18px; }
.filter-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 220px)); gap: 14px; align-items: end; }
.stat-card { padding: 20px 22px; display: grid; gap: 8px; }
.stat-card span { color: var(--muted); }
.stat-card strong { font-size: 30px; }
.todo-list { display: grid; gap: 16px; }
.todo-card { overflow: hidden; }
.todo-card > summary { list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 18px 22px; cursor: pointer; }
.todo-card > summary::-webkit-details-marker { display: none; }
.todo-title { margin: 0 0 6px; font-size: 26px; }
.todo-meta { display: grid; gap: 4px; }
.badge { padding: 8px 14px; border-radius: 999px; background: rgba(196, 77, 45, 0.12); color: var(--accent-strong); white-space: nowrap; }
.badge-ops { background: rgba(47, 143, 98, 0.14); color: var(--success); }
.detail-grid { padding: 0 22px 18px; display: grid; grid-template-columns: 1.5fr 1fr; gap: 16px; }
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.info-grid > div, .note-box, .compact-form, .ops-form, .log-item { padding: 16px; border-radius: 18px; background: rgba(255, 255, 255, 0.72); border: 1px solid rgba(113, 84, 57, 0.14); }
.info-grid span, .note-box span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.forms-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 0 22px 22px; }
.compact-form, .ops-form { padding: 18px; }
.reject-form { background: rgba(179, 59, 39, 0.06); }
.section-heading { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 16px; }
.table-wrap { overflow-x: auto; }
.compact-table-wrap { max-height: 360px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 14px 12px; border-bottom: 1px solid rgba(113, 84, 57, 0.12); vertical-align: top; }
.inline-actions, .log-list { display: grid; gap: 8px; }
.checkbox-row { display: flex; flex-wrap: wrap; gap: 10px; }
.checkbox-pill { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); padding: 10px 14px; border-radius: 999px; background: rgba(255, 255, 255, 0.75); }
.group-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.group-tag { display: inline-block; margin-bottom: 10px; padding: 6px 10px; border-radius: 999px; background: rgba(196, 77, 45, 0.12); color: var(--accent-strong); }
.empty-state { text-align: center; }
.empty-tip { color: var(--muted); }
.action-overlay,
.result-modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    background: rgba(42, 29, 20, 0.28);
    padding: 20px;
}
.action-overlay-card,
.result-modal-card {
    min-width: 280px;
    max-width: 420px;
    padding: 28px;
    border-radius: 24px;
    background: rgba(255, 252, 247, 0.98);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    text-align: center;
}
.result-modal-card {
    display: grid;
    gap: 16px;
}
.result-modal-card h3,
.action-overlay-card strong {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
}
.hidden {
    display: none;
}
.spinner {
    width: 42px;
    height: 42px;
    margin: 0 auto 16px;
    border-radius: 50%;
    border: 4px solid rgba(196, 77, 45, 0.18);
    border-top-color: var(--accent);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@media (max-width: 980px) {
    .login-hero, .dashboard-grid, .overview-strip, .detail-grid, .forms-row, .group-grid { grid-template-columns: 1fr; }
    .topbar { flex-direction: column; }
    .topbar-actions { justify-content: flex-start; }
    .info-grid { grid-template-columns: 1fr; }
    .filter-form { grid-template-columns: 1fr; }
}