/* ──────────────────────────────────────────────────────────────────────────
   ฉากสามมิติ "ยามเช้าที่โรงเรียน" (4 พ.ย. 2569) — ใช้ทั้ง student_attendance/school_3d.php และ /school_morning.php
   สีและฟอนต์จากโทเคนของเว็บ (--tb1-*) จึงเปลี่ยนตามโหมดมืดและคอนทราสต์ของเว็บเอง · คำนำหน้า s3d-
   ไม่มี opacity:0 เป็นสถานะพัก (หน้าเปิดแล้วเห็นครบ) · เคารพการลดการเคลื่อนไหว
   ────────────────────────────────────────────────────────────────────────── */

.s3d {
    --s3d-surface: var(--tb1-surface, #ffffff);
    --s3d-ink: var(--tb1-ink-1, #14213d);
    --s3d-ink-2: var(--tb1-ink-2, #3a4862);
    --s3d-muted: var(--tb1-ink-3, #5f6f86);
    --s3d-line: var(--tb1-border, #d5dde7);
    --s3d-brand: var(--tb1-brand, #1d4ed8);
    --s3d-brand-soft: color-mix(in srgb, var(--s3d-brand) 12%, var(--s3d-surface));
    --s3d-teacher: #a8741f;
    --s3d-teacher-soft: color-mix(in srgb, #a8741f 26%, var(--s3d-surface));
    --s3d-warn: #b45309;
    --s3d-bad: #b91c1c;
    --s3d-hud: color-mix(in srgb, var(--s3d-surface) 88%, transparent);
    --s3d-hud-line: color-mix(in srgb, var(--s3d-ink) 12%, transparent);
    --s3d-future: color-mix(in srgb, var(--s3d-ink) 7%, transparent);
    --s3d-display: var(--tb1-font-display, "Noto Sans Thai Looped", "Sarabun", system-ui, sans-serif);
    display: grid;
    gap: 12px;
    min-width: 0;
    color: var(--s3d-ink);
}

:is(html.dark, html.dark-mode, html[data-theme="dark"]) .s3d {
    --s3d-teacher: #e3b45e;
    --s3d-teacher-soft: color-mix(in srgb, #e3b45e 30%, var(--s3d-surface));
    --s3d-warn: #fbbf24;
    --s3d-bad: #f87171;
}

/* ── ช่วงเวลา (เช้า/เย็น) และคำอธิบายตัวละคร ── */
.s3d-top {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 16px;
}

.s3d .s3d-modes .s3d-btn {
    min-height: 36px;
    padding: 0 14px;
}

.s3d .s3d-modes .s3d-btn i {
    font-size: .9rem;
}

/* ── คำอธิบายตัวละคร ── */
.s3d-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: .88rem;
    color: var(--s3d-ink-2);
}

.s3d-legend li {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.s3d-swatch {
    width: 12px;
    height: 16px;
    border-radius: 4px 4px 2px 2px;
    box-shadow: 0 0 0 1px var(--s3d-hud-line);
}

.s3d-swatch.is-s {
    background: linear-gradient(#f2f3ee 0 55%, #22305a 55% 100%);
}

.s3d-swatch.is-t {
    background: linear-gradient(#b9a170 0 55%, #3a4150 55% 100%);
}

/* ── เวที ── */
.s3d-stage {
    position: relative;
    height: clamp(400px, 66vh, 760px);
    overflow: hidden;
    background: linear-gradient(#9fc9ef, #f7e6c9);
    border: 1px solid var(--s3d-line);
    border-radius: 18px;
    box-shadow: 0 18px 40px -28px rgba(20, 33, 61, .55);
    isolation: isolate;
}

.s3d-stage canvas {
    display: block;
    width: 100%;
    height: 100%;
    outline: none;
    cursor: grab;
}

.s3d-stage canvas:active {
    cursor: grabbing;
}

.s3d-stage canvas:focus-visible {
    box-shadow: inset 0 0 0 3px var(--s3d-brand);
}

.s3d-hud {
    position: absolute;
    z-index: 2;
    color: var(--s3d-ink);
    background: var(--s3d-hud);
    border: 1px solid var(--s3d-hud-line);
    border-radius: 14px;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 24px -18px rgba(20, 33, 61, .6);
}

.s3d-hud-clock {
    top: 12px;
    left: 12px;
    padding: 8px 14px 10px;
}

.s3d-clock {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin: 0;
    font-family: var(--s3d-display);
    font-size: clamp(1.7rem, 1.3rem + 1.4vw, 2.4rem);
    font-weight: 700;
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}

.s3d-clock small {
    font-size: .9rem;
    font-weight: 600;
    color: var(--s3d-muted);
}

.s3d-phase {
    margin: 2px 0 0;
    font-size: .86rem;
    font-weight: 600;
    color: var(--s3d-ink-2);
}

.s3d-hud-stats {
    top: 12px;
    right: 12px;
    display: grid;
    gap: 8px;
    width: min(280px, calc(100% - 24px));
    padding: 10px 14px 12px;
}

.s3d-stat {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 0 10px;
}

.s3d-stat-k {
    font-size: .84rem;
    color: var(--s3d-ink-2);
}

.s3d-stat-v {
    font-size: .84rem;
    color: var(--s3d-muted);
    font-variant-numeric: tabular-nums;
}

.s3d-stat-v b {
    font-family: var(--s3d-display);
    font-size: 1.15rem;
    color: var(--s3d-ink);
}

.s3d-stat.is-late .s3d-stat-v b {
    color: var(--s3d-warn);
}

.s3d-meter {
    grid-column: 1 / -1;
    height: 6px;
    margin-top: 3px;
    overflow: hidden;
    background: color-mix(in srgb, var(--c) 16%, transparent);
    border-radius: 99px;
}

.s3d-meter i {
    display: block;
    width: 0;
    height: 100%;
    background: var(--c);
    border-radius: 99px;
    transition: width .25s ease-out;
}

.s3d-note {
    position: absolute;
    left: 50%;
    bottom: 12px;
    z-index: 2;
    max-width: calc(100% - 24px);
    margin: 0;
    padding: 4px 12px;
    font-size: .84rem;
    color: var(--s3d-ink);
    background: var(--s3d-hud);
    border: 1px solid var(--s3d-hud-line);
    border-radius: 999px;
    transform: translateX(-50%);
}

.s3d-hint {
    position: absolute;
    left: 12px;
    bottom: 12px;
    z-index: 2;
    margin: 0;
    padding: 3px 10px;
    font-size: .8rem;
    color: var(--s3d-ink-2);
    background: var(--s3d-hud);
    border-radius: 999px;
    pointer-events: none;
}

.s3d-pick {
    position: absolute;
    z-index: 3;
    max-width: 250px;
    padding: 8px 12px;
    font-size: .88rem;
    line-height: 1.45;
    color: var(--s3d-ink);
    background: var(--s3d-surface);
    border: 1px solid var(--s3d-line);
    border-radius: 12px;
    box-shadow: 0 18px 40px -24px rgba(20, 33, 61, .6);
    pointer-events: none;
}

.s3d-pick b,
.s3d-pick span,
.s3d-pick small {
    display: block;
}

.s3d-pick b {
    font-family: var(--s3d-display);
    font-weight: 600;
}

.s3d-pick small {
    color: var(--s3d-muted);
}

.s3d-msg {
    position: absolute;
    left: 50%;
    top: 50%;
    z-index: 4;
    display: grid;
    gap: 4px;
    width: min(420px, calc(100% - 32px));
    padding: 16px 18px;
    text-align: center;
    color: var(--s3d-ink);
    background: var(--s3d-surface);
    border: 1px solid var(--s3d-line);
    border-radius: 16px;
    box-shadow: 0 18px 40px -24px rgba(20, 33, 61, .6);
    transform: translate(-50%, -50%);
}

.s3d-msg span {
    font-size: .9rem;
    color: var(--s3d-ink-2);
}

/* ── แผงควบคุม ── */
.s3d-dock {
    display: grid;
    gap: 10px;
    padding: 12px 14px;
    background: var(--s3d-surface);
    border: 1px solid var(--s3d-line);
    border-radius: 16px;
}

.s3d-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 14px;
}

.s3d .s3d-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 36px;
    margin: 0;
    padding: 0 12px;
    font-family: inherit;
    font-size: .88rem;
    font-weight: 600;
    line-height: 1;
    color: var(--s3d-ink);
    text-decoration: none;
    background: var(--s3d-surface);
    border: 1px solid var(--s3d-line);
    border-radius: 10px;
    cursor: pointer;
    transition: background .15s, border-color .15s, color .15s;
}

.s3d .s3d-btn:hover:not(:disabled) {
    border-color: var(--s3d-brand);
}

.s3d .s3d-btn:disabled {
    cursor: not-allowed;
    opacity: .5;
}

.s3d .s3d-btn:focus-visible,
.s3d-tl input:focus-visible {
    outline: 2px solid var(--s3d-brand);
    outline-offset: 2px;
}

.s3d .s3d-btn[aria-pressed="true"] {
    color: var(--s3d-brand);
    background: var(--s3d-brand-soft);
    border-color: color-mix(in srgb, var(--s3d-brand) 45%, var(--s3d-line));
}

.s3d .s3d-btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.s3d .s3d-btn.is-play {
    width: 46px;
    min-height: 46px;
    padding: 0;
    color: #ffffff;
    background: var(--s3d-brand);
    border-color: var(--s3d-brand);
    border-radius: 50%;
}

.s3d .s3d-btn.is-play svg {
    width: 18px;
    height: 18px;
}

.s3d-tl {
    flex: 1 1 320px;
    min-width: 0;
    display: grid;
    gap: 2px;
}

.s3d-tl canvas {
    width: 100%;
    height: 34px;
}

.s3d-tl input {
    width: 100%;
    margin: 0;
    accent-color: var(--s3d-brand);
}

.s3d-ticks {
    display: flex;
    justify-content: space-between;
    font-size: .74rem;
    color: var(--s3d-muted);
    font-variant-numeric: tabular-nums;
}

.s3d-tl-cap {
    margin: 0;
    font-size: .76rem;
    color: var(--s3d-muted);
}

.s3d-tl-cap i {
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 4px;
    vertical-align: -1px;
    background: var(--s3d-teacher);
    border-radius: 2px;
}

.s3d-seg {
    display: inline-flex;
    gap: 2px;
    padding: 3px;
    background: color-mix(in srgb, var(--s3d-ink) 5%, var(--s3d-surface));
    border-radius: 12px;
}

.s3d .s3d-seg .s3d-btn {
    min-height: 30px;
    padding: 0 10px;
    background: transparent;
    border-color: transparent;
}

.s3d .s3d-seg .s3d-btn[aria-pressed="true"] {
    background: var(--s3d-surface);
    border-color: var(--s3d-line);
}

.s3d-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.s3d .s3d-chips .s3d-btn {
    min-height: 32px;
    font-weight: 500;
}

.s3d-chips .s3d-btn b {
    font-variant-numeric: tabular-nums;
}

.s3d-views {
    margin-left: auto;
}

/* ── สรุปของวัน (ตัวเลขจริง) ── */
.s3d-sum {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.s3d-sum li {
    --c: var(--s3d-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    font-size: .86rem;
    color: var(--s3d-ink);
    background: color-mix(in srgb, var(--c) 10%, var(--s3d-surface));
    border: 1px solid color-mix(in srgb, var(--c) 26%, var(--s3d-line));
    border-radius: 999px;
    font-variant-numeric: tabular-nums;
}

.s3d-sum li::before {
    content: "";
    width: 8px;
    height: 8px;
    background: var(--c);
    border-radius: 50%;
}

.s3d-sum li.is-brand { --c: var(--s3d-brand); }
.s3d-sum li.is-teacher { --c: var(--s3d-teacher); }
.s3d-sum li.is-warn { --c: var(--s3d-warn); }
.s3d-sum li.is-bad { --c: var(--s3d-bad); }

/* ── หมายเหตุ ── */
.s3d-notes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
    gap: 10px;
}

.s3d-notes article {
    min-width: 0;
    padding: 12px 14px;
    background: var(--s3d-surface);
    border: 1px solid var(--s3d-line);
    border-radius: 14px;
}

.s3d-notes h2,
.s3d-notes h3 {
    margin: 0 0 4px;
    font-family: var(--s3d-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--s3d-ink);
}

.s3d-notes p {
    margin: 0;
    font-size: .9rem;
    line-height: 1.6;
    color: var(--s3d-ink-2);
}

@media (max-width: 640px) {
    .s3d-stage {
        height: clamp(380px, 60vh, 560px);
    }

    .s3d-hud-clock {
        top: 8px;
        left: 8px;
        padding: 6px 10px 8px;
    }

    .s3d-hud-stats {
        top: auto;
        right: 8px;
        bottom: 8px;
        left: 8px;
        width: auto;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 8px;
        padding: 8px 10px;
    }

    .s3d-hud-stats .s3d-stat {
        grid-template-columns: minmax(0, 1fr);
    }

    .s3d-hud-stats .s3d-stat-k {
        font-size: .74rem;
        line-height: 1.3;
    }

    .s3d-hint {
        display: none;
    }

    .s3d-note {
        top: 74px;
        bottom: auto;
        font-size: .78rem;
    }

    .s3d-views {
        margin-left: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .s3d-meter i {
        transition: none;
    }
}

@media print {
    .s3d-dock,
    .s3d-hint {
        display: none;
    }
}