/* ==========================================================================
   News Pulse - shared styles for the public feed and the admin panel.

   Theme: light by default, dark via [data-theme="dark"] on <html>, and dark
   by default when the OS prefers it and the reader has not chosen. Category
   colours come in pairs (--cat / --cat-dark) because no single hue clears
   4.5:1 against both a white and a near-black background - see
   scripts/check-contrast.js.
   ========================================================================== */

:root {
    --bg: #ffffff;
    --bg-elev: #f6f7f9;
    --bg-sunken: #eef0f3;
    --fg: #16191d;
    --fg-muted: #5b6672;
    --fg-faint: #8a95a1;
    --border: #dfe3e8;
    --border-strong: #c6ccd4;
    --accent: #1d4ed8;
    --accent-fg: #ffffff;
    --danger: #b91c1c;
    --ok: #047857;
    --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 8px 24px rgba(16, 24, 40, .06);
    --radius: 14px;
    --radius-sm: 9px;
    --maxw: 620px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --serif: Georgia, "Times New Roman", serif;
}

html[data-theme="dark"] {
    --bg: #111418;
    --bg-elev: #181c22;
    --bg-sunken: #0d1014;
    --fg: #e8ecf1;
    --fg-muted: #a2adba;
    --fg-faint: #6f7c8a;
    --border: #262c34;
    --border-strong: #39424d;
    --accent: #60a5fa;
    --accent-fg: #0b0e12;
    --danger: #f87171;
    --ok: #34d399;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
}

@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) {
        --bg: #111418;
        --bg-elev: #181c22;
        --bg-sunken: #0d1014;
        --fg: #e8ecf1;
        --fg-muted: #a2adba;
        --fg-faint: #6f7c8a;
        --border: #262c34;
        --border-strong: #39424d;
        --accent: #60a5fa;
        --accent-fg: #0b0e12;
        --danger: #f87171;
        --ok: #34d399;
        --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
    }
}

* { box-sizing: border-box; }

/* [hidden] only implies `display: none`; any explicit display rule beats it.
   Keep this so hiding an element by attribute actually hides it. */
[hidden] { display: none !important; }

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overscroll-behavior-y: none;
}

a { color: var(--accent); }

/* ---------------------------------------------------------------- top bar */

.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 20;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
    padding-top: env(safe-area-inset-top);
}

.topbar-row {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 10px 16px 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.brand {
    font-weight: 800;
    font-size: 1.05rem;
    letter-spacing: -.02em;
    text-decoration: none;
    color: var(--fg);
}
.brand span { color: var(--accent); }

.theme-toggle {
    display: grid;
    place-items: center;
    width: 34px; height: 34px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-elev);
    color: var(--fg-muted);
    cursor: pointer;
}
.theme-toggle:hover { color: var(--fg); border-color: var(--border-strong); }

/* Filter bar: horizontally scrollable, never wraps, scrollbar hidden. */
.filters {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 2px 16px 10px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.filters::-webkit-scrollbar { display: none; }

.chip {
    flex: 0 0 auto;
    border: 1px solid var(--chip, var(--border-strong));
    color: var(--chip, var(--fg-muted));
    background: transparent;
    border-radius: 999px;
    padding: 5px 13px;
    font-size: .82rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    white-space: nowrap;
    transition: background .15s, color .15s;
}
.chip:hover { background: color-mix(in srgb, var(--chip, var(--fg-muted)) 12%, transparent); }
.chip[aria-pressed="true"] {
    background: var(--chip, var(--fg));
    color: var(--bg);
    border-color: var(--chip, var(--fg));
}

/* ------------------------------------------------------------------- feed */

/* One card per screen, snapped. 100dvh (not 100vh) so collapsing mobile
   browser chrome cannot clip a card. */
.feed {
    height: 100dvh;
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
    overscroll-behavior-y: contain;
    scroll-behavior: smooth;
}
.feed:focus { outline: none; }

.card {
    min-height: 100dvh;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(96px + env(safe-area-inset-top)) 16px calc(28px + env(safe-area-inset-bottom));
    max-width: var(--maxw);
    margin: 0 auto;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.pill {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .03em;
    text-transform: uppercase;
    color: var(--bg);
    background: var(--cat, var(--fg-muted));
}

.source {
    font-size: .78rem;
    color: var(--fg-faint);
}

.card h2 {
    font-size: clamp(1.35rem, 5vw, 1.7rem);
    line-height: 1.24;
    letter-spacing: -.02em;
    margin: 0 0 12px;
    font-weight: 750;
}

.card .body {
    font-family: var(--serif);
    font-size: clamp(1.02rem, 3.7vw, 1.12rem);
    line-height: 1.62;
    color: var(--fg);
    margin: 0 0 18px;
}

.readmore {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: .82rem;
    font-weight: 600;
    text-decoration: none;
    margin-top: 14px;
    color: var(--fg-muted);
}
.readmore:hover { color: var(--accent); }

/* ------------------------------------------------------------------- poll */

.poll {
    border: 1px solid var(--border);
    background: var(--bg-elev);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
}

.poll h3 {
    margin: 0 0 13px;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.35;
}

.options { display: flex; flex-direction: column; gap: 8px; }

.opt {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
    text-align: left;
    font: inherit;
    font-size: .93rem;
    font-weight: 550;
    color: var(--fg);
    background: var(--bg);
    border: 1.5px solid var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 11px 13px;
    cursor: pointer;
    overflow: hidden;
    transition: border-color .15s, background .15s, transform .08s;
}
.opt:hover:not(:disabled) { border-color: var(--cat, var(--accent)); }
.opt:active:not(:disabled) { transform: scale(.99); }
.opt:disabled { cursor: default; }

/* The result bar is painted behind the label once results are revealed. */
.opt .fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: var(--pct, 0%);
    background: color-mix(in srgb, var(--cat, var(--accent)) 20%, transparent);
    transition: width .5s cubic-bezier(.22,.61,.36,1);
    z-index: 0;
}
.opt .label, .opt .pct { position: relative; z-index: 1; }
.opt .pct { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--fg-muted); }

.opt.chosen {
    border-color: var(--cat, var(--accent));
    background: color-mix(in srgb, var(--cat, var(--accent)) 8%, var(--bg));
}
.opt.chosen .label::after {
    content: " ✓";
    color: var(--cat, var(--accent));
    font-weight: 800;
}

.poll-note {
    margin: 12px 0 0;
    font-size: .8rem;
    color: var(--fg-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}
.poll-note .lock { opacity: .7; }
.poll-note strong { color: var(--fg); font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------- states / helpers */

.state {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    color: var(--fg-muted);
    text-align: center;
    padding: 40px 24px;
}
.state h2 { color: var(--fg); margin: 0; font-size: 1.15rem; }
.state p { margin: 0; max-width: 34ch; }

.spinner {
    width: 26px; height: 26px;
    border: 2.5px solid var(--border-strong);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.end {
    min-height: 45dvh;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--fg-faint);
    font-size: .88rem;
    text-align: center;
    padding: 30px 20px calc(40px + env(safe-area-inset-bottom));
}

.toast {
    position: fixed;
    left: 50%;
    bottom: calc(22px + env(safe-area-inset-bottom));
    transform: translate(-50%, 140%);
    background: var(--fg);
    color: var(--bg);
    padding: 10px 16px;
    border-radius: 999px;
    font-size: .86rem;
    font-weight: 600;
    z-index: 60;
    max-width: min(90vw, 420px);
    text-align: center;
    transition: transform .28s cubic-bezier(.22,.61,.36,1);
    pointer-events: none;
}
.toast.show { transform: translate(-50%, 0); }

.btn {
    font: inherit;
    font-weight: 650;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-strong);
    background: var(--bg-elev);
    color: var(--fg);
    padding: 9px 15px;
    cursor: pointer;
}
.btn:hover { border-color: var(--fg-faint); }
.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-fg);
}
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

@media (prefers-reduced-motion: reduce) {
    * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
    .feed { scroll-behavior: auto; }
}
