/* ============================================================
   動力新聞 — app.css
   Loaded AFTER bootstrap.min.css.

   This is a THEME LAYER over Bootstrap 5.3, not a replacement: it re-points
   Bootstrap's own CSS variables at this app's design tokens (softer radii,
   gentle shadows, a CJK-aware font stack, 14.5px base) and then nudges a
   handful of components. Views keep using plain Bootstrap classes, so the
   markup stays maintainable while the look stays yours.

   To restyle, change the tokens in the two :root blocks below. Avoid adding
   component rules unless Bootstrap genuinely has no equivalent.
   ============================================================ */

/* ---------- Design tokens (light) ---------- */
:root {
    /* Brand — change these to re-brand the whole app */
    --app-brand: #4f46e5;
    --app-brand-hover: #4338ca;
    --app-brand-active: #3730a3;
    --app-brand-soft: #eef2ff;     /* tinted background for active/selected */
    --app-brand-grad: linear-gradient(135deg, #4f46e5, #7c3aed);

    /* Surfaces: page is tinted, cards/sidebar/topbar are white */
    --app-page-bg: #f6f7fb;
    --app-surface: #ffffff;
    --app-surface-2: #f9fafc;      /* hover rows, subtle fills */

    /* Ink */
    --app-text: #1e2233;
    --app-muted: #71768a;
    --app-faint: #9aa0b3;

    /* Lines, corners, depth */
    --app-border: #e6e8ef;
    --app-border-strong: #d5d9e4;
    --app-shadow: 0 1px 2px rgba(24, 28, 50, .04), 0 4px 16px rgba(24, 28, 50, .06);
    --app-radius: 14px;
    --app-radius-sm: 10px;

    --app-sidebar-w: 250px;
    --app-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                "Microsoft YaHei", "Hiragino Sans GB", Roboto, Helvetica, Arial, sans-serif;

    /* ---- Hand these tokens to Bootstrap ---- */
    --bs-body-font-family: var(--app-font);
    --bs-body-font-size: 14.5px;
    --bs-body-line-height: 1.55;
    --bs-body-bg: var(--app-page-bg);
    --bs-body-color: var(--app-text);
    --bs-secondary-color: var(--app-muted);
    --bs-tertiary-color: var(--app-faint);
    --bs-secondary-bg: var(--app-surface-2);
    --bs-tertiary-bg: var(--app-surface-2);
    --bs-border-color: var(--app-border);
    --bs-border-color-translucent: var(--app-border);
    --bs-border-radius: var(--app-radius-sm);
    --bs-border-radius-lg: var(--app-radius);
    --bs-border-radius-sm: 7px;
    --bs-link-color: var(--app-brand);
    --bs-link-hover-color: var(--app-brand-hover);
    --bs-emphasis-color: var(--app-text);

    /* Bootstrap's own "primary" family = the brand, so every bg-primary-subtle
       / text-primary-emphasis utility is on-brand without extra classes. */
    --bs-primary: var(--app-brand);
    --bs-primary-rgb: 79, 70, 229;
    --bs-primary-bg-subtle: var(--app-brand-soft);
    --bs-primary-border-subtle: #c7d2fe;
    --bs-primary-text-emphasis: #3730a3;
}

/* ---------- Design tokens (dark) ---------- */
[data-bs-theme="dark"] {
    --app-brand: #818cf8;
    --app-brand-hover: #6366f1;
    --app-brand-active: #4f46e5;
    --app-brand-soft: #1e213a;
    --app-brand-grad: linear-gradient(135deg, #6366f1, #8b5cf6);

    --app-page-bg: #0f1117;
    --app-surface: #171a23;
    --app-surface-2: #1d212c;

    --app-text: #e7e9f0;
    --app-muted: #9096a8;
    --app-faint: #6b7183;

    --app-border: #272b38;
    --app-border-strong: #333848;
    --app-shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .3);

    --bs-primary: #818cf8;
    --bs-primary-rgb: 129, 140, 248;
    --bs-primary-bg-subtle: #1e213a;
    --bs-primary-border-subtle: #312e81;
    --bs-primary-text-emphasis: #a5b4fc;
}

body { -webkit-font-smoothing: antialiased; }

/* ---------- Cards: white, rounded, softly raised ---------- */
.card {
    --bs-card-bg: var(--app-surface);
    --bs-card-border-color: var(--app-border);
    --bs-card-border-radius: var(--app-radius);
    --bs-card-inner-border-radius: calc(var(--app-radius) - 1px);
    --bs-card-cap-bg: transparent;
    box-shadow: var(--app-shadow);
}
.card-header { padding: .85rem 1.1rem; border-bottom-color: var(--app-border); }
.card-body { padding: 1.1rem; }

/* ---------- Tables: small uppercase heads, quiet rules ---------- */
.table {
    --bs-table-bg: transparent;
    --bs-table-border-color: var(--app-border);
    --bs-table-hover-bg: var(--app-surface-2);
    font-size: 13.5px;
    margin-bottom: 0;
}
.table > thead > tr > th {
    padding: .75rem .9rem;
    font-size: 11.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--app-faint);
    background: transparent;
    border-bottom: 1px solid var(--app-border);
    white-space: nowrap;
}
.table > tbody > tr > td { padding: .7rem .9rem; border-color: var(--app-border); }
.table > tbody > tr:last-child > td { border-bottom: 0; }

/* ---------- Buttons: compact, 600 weight ---------- */
.btn {
    --bs-btn-font-size: 13.5px;
    --bs-btn-font-weight: 600;
    --bs-btn-padding-y: .5rem;
    --bs-btn-padding-x: .9rem;
    --bs-btn-border-radius: var(--app-radius-sm);
    white-space: nowrap;
}
.btn-sm { --bs-btn-font-size: 12.5px; --bs-btn-padding-y: .3rem; --bs-btn-padding-x: .6rem; }
.btn-primary {
    --bs-btn-bg: var(--app-brand);
    --bs-btn-border-color: var(--app-brand);
    --bs-btn-hover-bg: var(--app-brand-hover);
    --bs-btn-hover-border-color: var(--app-brand-hover);
    --bs-btn-active-bg: var(--app-brand-active);
    --bs-btn-active-border-color: var(--app-brand-active);
    --bs-btn-disabled-bg: var(--app-brand);
    --bs-btn-disabled-border-color: var(--app-brand);
}
/* Neutral buttons read as "surface with a hairline", not as outlines. */
.btn-outline-secondary, .btn-light {
    --bs-btn-color: var(--app-text);
    --bs-btn-bg: var(--app-surface);
    --bs-btn-border-color: var(--app-border-strong);
    --bs-btn-hover-color: var(--app-text);
    --bs-btn-hover-bg: var(--app-surface-2);
    --bs-btn-hover-border-color: var(--app-faint);
    --bs-btn-active-color: var(--app-text);
    --bs-btn-active-bg: var(--app-surface-2);
    --bs-btn-active-border-color: var(--app-faint);
}

/* ---------- Forms ---------- */
.form-control, .form-select {
    font-size: 14.5px;
    padding: .55rem .75rem;
    border-radius: var(--app-radius-sm);
    background-color: var(--app-surface);
    border-color: var(--app-border-strong);
    color: var(--app-text);
}
.form-control:focus, .form-select:focus {
    background-color: var(--app-surface);
    border-color: var(--app-brand);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, .14);
}
.form-control::placeholder { color: var(--app-faint); }
.form-label { font-size: 13px; font-weight: 650; margin-bottom: .3rem; }
.form-text { font-size: 12px; color: var(--app-faint); }
.form-check-input:checked { background-color: var(--app-brand); border-color: var(--app-brand); }
.form-check-input:focus { border-color: var(--app-brand); box-shadow: 0 0 0 3px rgba(79, 70, 229, .14); }
.input-group > .form-control:focus { z-index: 3; }

/* ---------- Alerts: soft, slightly raised ---------- */
.alert {
    --bs-alert-border-radius: var(--app-radius-sm);
    font-weight: 500;
    box-shadow: var(--app-shadow);
}

/* ---------- App shell ---------- */
/* Sidebar and topbar are white surfaces on the tinted page. */
.app-sidebar {
    width: var(--app-sidebar-w);
    background: var(--app-surface);
    border-right: 1px solid var(--app-border);
    position: sticky;
    top: 0;
    height: 100vh;
}
.app-offcanvas {
    width: var(--app-sidebar-w);
    --bs-offcanvas-bg: var(--app-surface);
    --bs-offcanvas-border-color: var(--app-border);
}
.app-topbar {
    min-height: 60px;
    background: color-mix(in srgb, var(--app-surface) 82%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--app-border) !important;
    position: sticky;
    top: 0;
    z-index: 1020;
}
.app-topbar > span { font-size: 15px; font-weight: 700; }
.app-brand-logo {
    width: 38px; height: 38px; flex: 0 0 38px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 10px;
    background: var(--app-brand-grad);
    color: #fff; font-weight: 800; font-size: 14px; letter-spacing: .5px;
}
.app-nav-section {
    margin: 1rem 0 .25rem .75rem;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .06em;
    color: var(--app-faint);
}

/* Sidebar links: tinted when active (not a solid block), muted at rest. */
.nav-pills {
    --bs-nav-link-padding-y: .55rem;
    --bs-nav-link-padding-x: .75rem;
    --bs-nav-pills-border-radius: var(--app-radius-sm);
}
.nav-pills .nav-link {
    color: var(--app-muted);
    font-weight: 500;
    transition: background-color .12s, color .12s;
}
.nav-pills .nav-link:hover:not(.active) { background: var(--app-surface-2); color: var(--app-text); }
.nav-pills .nav-link.active {
    background: var(--app-brand-soft);
    color: var(--app-brand);
    font-weight: 600;
}

/* Language switcher: quiet pills, tinted when on. */
.btn-group .btn-outline-secondary {
    --bs-btn-font-size: 12.5px;
    --bs-btn-border-color: var(--app-border);
    --bs-btn-color: var(--app-muted);
}
.btn-group .btn-outline-secondary.active {
    background: var(--app-brand-soft);
    border-color: var(--app-brand-soft);
    color: var(--app-brand);
}

/* User chip in the topbar reads as a pill. */
.app-topbar .dropdown-toggle { border-radius: 999px; padding: .25rem .7rem .25rem .3rem; }
.dropdown-menu {
    --bs-dropdown-bg: var(--app-surface);
    --bs-dropdown-border-color: var(--app-border);
    --bs-dropdown-border-radius: var(--app-radius-sm);
    box-shadow: 0 10px 40px rgba(24, 28, 50, .14);
}
[data-bs-theme="dark"] .dropdown-menu { box-shadow: 0 10px 40px rgba(0, 0, 0, .5); }

.min-w-0 { min-width: 0; }

/* ---------- Option card: a checkbox with a title + explanation ----------
   <label class="opt-card">
     <input type="checkbox" name="x" value="1" class="form-check-input">
     <span>
       <span class="d-block fw-semibold">Title</span>
       <span class="d-block small text-body-secondary">Why you would tick it.</span>
     </span>
   </label>                                                               */
.opt-card {
    display: flex; align-items: flex-start; gap: .65rem;
    padding: .7rem .8rem; cursor: pointer;
    border: 1px solid var(--app-border);
    border-radius: var(--app-radius-sm);
    background: var(--app-surface);
    transition: border-color .12s, background-color .12s;
}
.opt-card:hover { border-color: var(--app-border-strong); }
.opt-card.is-on, .opt-card:has(input:checked) {
    border-color: var(--app-brand);
    background: var(--app-brand-soft);
}
.opt-card input[type=checkbox] { flex: none; margin-top: .15rem; }

/* ---------- Small shared bits ---------- */
a.link { color: var(--app-brand); font-weight: 600; text-decoration: none; }
a.link:hover { text-decoration: underline; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.avatar { border-radius: 50%; object-fit: cover; }
.avatar-initials {
    display: inline-flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 600; flex: 0 0 auto;
}
.ic { flex: 0 0 auto; vertical-align: middle; }
tr.row-inactive > td { opacity: .55; }
.badge { font-weight: 600; }

/* ---------- Your app's styles below ---------- */