:root {
    /* Theme สีอัตลักษณ์ PNTC: แดงเข้ม + ทอง + พื้นหลังอบอุ่น */
    --bg: #fff8ed;
    --surface: #ffffff;
    --surface-soft: #fff3cf;
    --text: #26120f;
    --muted: #7a6259;
    --line: #f1dfc8;
    --primary: #b5121b;
    --primary-dark: #7f0d13;
    --primary-soft: #fff1f1;
    --gold: #d8a21b;
    --gold-dark: #996d00;
    --success: #15803d;
    --info: #b5121b;
    --warning: #d97706;
    --danger: #dc2626;
    --radius-lg: 24px;
    --radius-md: 18px;
    --shadow: 0 18px 45px rgba(92, 36, 14, 0.10);
    --shadow-soft: 0 10px 24px rgba(92, 36, 14, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Noto Sans Thai", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(181, 18, 27, 0.13), transparent 32rem),
        radial-gradient(circle at top right, rgba(216, 162, 27, 0.18), transparent 28rem),
        linear-gradient(180deg, #fffaf0 0%, #fff8ed 45%, #fdf4e3 100%);
}

.app-shell {
    display: grid;
    grid-template-columns: 290px 1fr;
    min-height: 100vh;
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 28px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(255, 247, 230, 0.90)),
        var(--surface);
    backdrop-filter: blur(18px);
    border-right: 1px solid var(--line);
}

.brand {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-bottom: 32px;
}

.brand-icon {
    width: 52px;
    height: 52px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--gold));
    color: #fff;
    font-size: 24px;
    box-shadow: var(--shadow-soft);
}

.brand-logo {
    width: 64px;
    height: 64px;
    flex: 0 0 64px;
    object-fit: contain;
    border-radius: 50%;
    padding: 5px;
    background: #fff;
    border: 2px solid rgba(216, 162, 27, 0.38);
    box-shadow: 0 12px 28px rgba(181, 18, 27, 0.18);
}

.brand-kicker {
    color: var(--primary);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.brand-title {
    font-weight: 800;
    font-size: 18px;
}

.brand-subtitle {
    color: var(--muted);
    font-size: 12px;
    margin-top: 2px;
}

.side-nav {
    display: grid;
    gap: 8px;
}

.side-nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 12px 14px;
    border-radius: 14px;
    font-weight: 600;
    transition: all .2s ease;
}

.side-nav a:hover,
.side-nav a.active {
    color: var(--primary-dark);
    background: linear-gradient(135deg, rgba(181, 18, 27, .09), rgba(216, 162, 27, .16));
}

.side-note {
    position: absolute;
    left: 28px;
    right: 28px;
    bottom: 28px;
    padding: 16px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #7f0d13, #b5121b 62%, #d8a21b);
    color: #fff8e1;
    display: grid;
    gap: 6px;
    font-size: 12px;
}

.side-note strong {
    color: #fff;
    font-size: 14px;
}

.side-note-logo {
    width: 54px;
    height: 54px;
    object-fit: contain;
    border-radius: 50%;
    background: #fff;
    padding: 4px;
    margin-bottom: 6px;
    box-shadow: 0 8px 18px rgba(0, 0, 0, .18);
}

.main-content {
    padding: 34px;
    overflow-x: hidden;
}

.hero {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 24px;
    align-items: stretch;
    margin-bottom: 22px;
}

.hero-pntc {
    position: relative;
    overflow: hidden;
    padding: 28px;
    border-radius: 32px;
    border: 1px solid rgba(216, 162, 27, .30);
    background:
        linear-gradient(135deg, rgba(255,255,255,.94), rgba(255,245,220,.86)),
        radial-gradient(circle at 92% 18%, rgba(216, 162, 27, .18), transparent 18rem);
    box-shadow: var(--shadow);
}

.hero-pntc::after {
    content: "";
    position: absolute;
    right: 22%;
    top: 50%;
    width: 240px;
    height: 240px;
    transform: translateY(-50%);
    background: url('../img/logo-pntc.png') center / contain no-repeat;
    opacity: .045;
    pointer-events: none;
}

.hero-main {
    position: relative;
    z-index: 1;
}

.college-badge {
    width: fit-content;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px 10px 10px;
    margin-bottom: 18px;
    border: 1px solid rgba(216, 162, 27, .36);
    border-radius: 999px;
    background: rgba(255, 255, 255, .82);
    box-shadow: var(--shadow-soft);
}

.college-badge img {
    width: 46px;
    height: 46px;
    object-fit: contain;
    border-radius: 50%;
}

.college-badge span {
    display: block;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.college-badge strong {
    display: block;
    color: var(--primary-dark);
    font-size: 15px;
    font-weight: 900;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.hero-tags span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(181, 18, 27, .08);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 800;
}

.hero-score-card {
    position: relative;
    z-index: 1;
    background:
        linear-gradient(180deg, rgba(255,255,255,.96), rgba(255,248,225,.94));
    border-color: rgba(216, 162, 27, .36);
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--primary);
    font-weight: 800;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.hero h1 {
    margin: 0;
    font-size: clamp(28px, 4vw, 46px);
    line-height: 1.12;
    letter-spacing: -0.04em;
}

.hero-text {
    max-width: 780px;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.8;
}

.hero-card,
.kpi-card,
.panel,
.filters-panel {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(226, 232, 240, .86);
    box-shadow: var(--shadow);
}

.hero-card {
    border-radius: var(--radius-lg);
    padding: 24px;
    display: grid;
    align-content: center;
}

.hero-card span,
.kpi-card span,
.quality-card span {
    color: var(--muted);
    font-weight: 600;
}

.hero-card strong {
    font-size: 54px;
    line-height: 1;
    color: var(--primary);
}

.hero-card small,
.kpi-card small {
    color: var(--muted);
}

.filters-panel {
    display: grid;
    grid-template-columns: 180px 190px minmax(260px, 1fr) 180px auto;
    gap: 14px;
    align-items: end;
    padding: 18px;
    border-radius: var(--radius-lg);
    margin-bottom: 22px;
}

.filter-group {
    display: grid;
    gap: 7px;
}

.filter-group label {
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

select {
    width: 100%;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--text);
    border-radius: 14px;
    padding: 12px 13px;
    font: inherit;
    outline: none;
}

select:focus {
    border-color: rgba(37, 99, 235, .55);
    box-shadow: 0 0 0 4px rgba(181, 18, 27, .12);
}

.btn-reset {
    border: 0;
    border-radius: 14px;
    padding: 13px 16px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
    transition: transform .2s ease, opacity .2s ease;
}

.btn-reset:hover {
    transform: translateY(-1px);
    opacity: .92;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 22px;
}

.kpi-card {
    border-radius: var(--radius-lg);
    padding: 20px;
    min-height: 142px;
    display: grid;
    align-content: space-between;
}

.kpi-card strong {
    display: block;
    margin: 8px 0 4px;
    font-size: 30px;
    letter-spacing: -0.04em;
}

.kpi-card.success strong {
    color: var(--success);
}

.kpi-card.info strong {
    color: var(--info);
}

.kpi-card.warning strong {
    color: var(--warning);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
    margin-bottom: 22px;
}

.panel {
    border-radius: var(--radius-lg);
    padding: 22px;
    margin-bottom: 22px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: flex-start;
    margin-bottom: 18px;
}

.panel-header h2 {
    margin: 0;
    font-size: 20px;
    letter-spacing: -0.02em;
}

.panel-header p {
    margin: 5px 0 0;
    color: var(--muted);
}

.chart-box {
    position: relative;
    height: 360px;
}

.chart-box.large {
    height: 520px;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
    margin-top: 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    min-width: 850px;
}

th,
td {
    padding: 13px 14px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: middle;
    font-size: 14px;
}

th {
    color: #334155;
    background: #f8fafc;
    font-weight: 800;
}

tbody tr:hover {
    background: #f8fbff;
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.quality-card {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: linear-gradient(180deg, #ffffff, #f8fbff);
}

.quality-card strong {
    display: block;
    margin-top: 10px;
    font-size: 28px;
    color: var(--primary);
}

.badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 800;
    background: var(--primary-soft);
    color: var(--primary-dark);
}

.dashboard-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 18px 0 4px;
    color: var(--muted);
    font-size: 13px;
}

.dashboard-footer img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 50%;
}

@media (max-width: 1280px) {
    .kpi-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .filters-panel {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .filter-wide {
        grid-column: span 2;
    }
}

@media (max-width: 980px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: relative;
        height: auto;
    }

    .side-note {
        position: static;
        margin-top: 24px;
    }

    .hero,
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .hero-pntc {
        padding: 22px;
    }

    .kpi-grid,
    .quality-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .main-content,
    .sidebar {
        padding: 18px;
    }

    .filters-panel,
    .kpi-grid,
    .quality-grid {
        grid-template-columns: 1fr;
    }

    .filter-wide {
        grid-column: auto;
    }

    .college-badge {
        align-items: flex-start;
        border-radius: 22px;
    }

    .college-badge strong {
        font-size: 14px;
    }

    .chart-box,
    .chart-box.large {
        height: 320px;
    }
}

/* ==========================================================
   FIX: Restore original sidebar navigation + PNTC identity
   เหตุผล: เวอร์ชัน PNTC UI ต้องคง Sidebar เดิมให้เห็นชัดเจน
   ทั้งบน Desktop และปรับเป็นเมนูแนวนอนบนหน้าจอเล็ก
   ========================================================== */

/* กำหนด Layout หลักให้มี Sidebar ด้านซ้ายเสมอบน Desktop */
.app-shell {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    min-height: 100vh;
}

/* Sidebar แบบเดิม: อยู่ซ้าย ติดหน้าจอ และเลื่อนได้ถ้าเมนูสูงเกิน */
.sidebar {
    position: sticky;
    top: 0;
    z-index: 50;
    height: 100vh;
    padding: 26px 22px;
    display: flex;
    flex-direction: column;
    gap: 22px;
    overflow-y: auto;
    overflow-x: hidden;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 247, 230, 0.94)),
        var(--surface);
    border-right: 1px solid rgba(216, 162, 27, .22);
    box-shadow: 10px 0 30px rgba(92, 36, 14, 0.05);
}

/* Brand PNTC ด้านบน Sidebar */
.brand-pntc {
    margin-bottom: 0;
    padding: 12px;
    border-radius: 22px;
    background: rgba(255, 255, 255, .78);
    border: 1px solid rgba(216, 162, 27, .24);
    box-shadow: var(--shadow-soft);
}

.brand-text {
    min-width: 0;
}

.brand-title,
.brand-subtitle,
.brand-kicker {
    white-space: normal;
}

/* โลโก้ใน Sidebar */
.brand-logo {
    width: 62px;
    height: 62px;
    flex: 0 0 62px;
    object-fit: contain;
    border-radius: 50%;
    padding: 5px;
    background: #fff;
    border: 2px solid rgba(216, 162, 27, 0.45);
    box-shadow: 0 12px 28px rgba(181, 18, 27, 0.16);
}

/* เมนูเดิมของ Sidebar */
.side-nav {
    display: grid;
    gap: 10px;
    margin: 0;
}

.side-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 13px 14px;
    border-radius: 16px;
    color: var(--muted);
    text-decoration: none;
    font-weight: 800;
    line-height: 1.2;
    background: transparent;
    border: 1px solid transparent;
    transition: background .2s ease, color .2s ease, transform .2s ease, border-color .2s ease;
}

.side-nav a:hover,
.side-nav a.active {
    color: var(--primary-dark);
    background: linear-gradient(135deg, rgba(181, 18, 27, .10), rgba(216, 162, 27, .18));
    border-color: rgba(216, 162, 27, .22);
    transform: translateX(3px);
}

.nav-icon {
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: rgba(255, 255, 255, .86);
    box-shadow: 0 8px 18px rgba(92, 36, 14, 0.07);
}

/* กล่องข้อมูลระบบให้อยู่ด้านล่าง Sidebar โดยไม่ทับเมนู */
.side-note {
    position: static;
    left: auto;
    right: auto;
    bottom: auto;
    margin-top: auto;
    padding: 16px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #7f0d13, #b5121b 62%, #d8a21b);
    color: #fff8e1;
    display: grid;
    gap: 6px;
    font-size: 12px;
    box-shadow: var(--shadow-soft);
}

.side-note strong {
    color: #fff;
    font-size: 14px;
}

.side-note span {
    color: rgba(255, 248, 225, .92);
}

/* ป้องกัน Main content เบียด/ทับ Sidebar */
.main-content {
    min-width: 0;
    padding: 34px;
    overflow-x: hidden;
}

/* Responsive: หน้าจอกลางและมือถือ เปลี่ยน Sidebar เป็นแถบบนเพื่อไม่ให้หาย */
@media (max-width: 980px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: sticky;
        top: 0;
        height: auto;
        max-height: none;
        padding: 14px 18px;
        border-right: 0;
        border-bottom: 1px solid rgba(216, 162, 27, .24);
        box-shadow: 0 10px 26px rgba(92, 36, 14, 0.08);
    }

    .brand-pntc {
        padding: 10px;
    }

    .brand-logo {
        width: 48px;
        height: 48px;
        flex-basis: 48px;
    }

    .brand-title {
        font-size: 16px;
    }

    .brand-subtitle {
        font-size: 11px;
    }

    .side-nav {
        display: flex;
        gap: 8px;
        overflow-x: auto;
        padding-bottom: 4px;
        scrollbar-width: thin;
    }

    .side-nav a {
        flex: 0 0 auto;
        width: auto;
        padding: 10px 12px;
        white-space: nowrap;
    }

    .side-nav a:hover,
    .side-nav a.active {
        transform: translateY(-1px);
    }

    .nav-icon {
        width: 28px;
        height: 28px;
        flex-basis: 28px;
    }

    .side-note {
        display: none;
    }
}

@media (max-width: 620px) {
    .main-content {
        padding: 18px;
    }

    .sidebar {
        padding: 12px;
    }

    .brand-pntc {
        gap: 10px;
    }

    .brand-kicker {
        font-size: 10px;
    }

    .brand-title {
        font-size: 15px;
    }
}

/* ==========================================================
   Insights Section: ข้อมูลเชิงลึกเพื่อสนับสนุนการตัดสินใจ
   ========================================================== */
.insights-panel {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(216, 162, 27, .25);
    background:
        linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(255, 248, 228, .86)),
        radial-gradient(circle at top right, rgba(181, 18, 27, .07), transparent 24rem);
}

.insights-header {
    align-items: flex-start;
}

.insight-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(181, 18, 27, .09);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 900;
    white-space: nowrap;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 18px;
}

.insight-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 265px;
    padding: 18px;
    border-radius: 22px;
    border: 1px solid rgba(216, 162, 27, .22);
    background: rgba(255, 255, 255, .88);
    box-shadow: var(--shadow-soft);
}

.insight-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.insight-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(181, 18, 27, .10), rgba(216, 162, 27, .18));
    font-size: 20px;
}

.insight-type {
    padding: 5px 9px;
    border-radius: 999px;
    background: rgba(122, 98, 89, .10);
    color: var(--muted);
    font-size: 11px;
    font-weight: 900;
}

.insight-card h3 {
    margin: 0;
    color: var(--text);
    font-size: 16px;
    line-height: 1.45;
}

.insight-card strong {
    color: var(--primary-dark);
    font-size: 34px;
    line-height: 1;
}

.insight-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.65;
}

.insight-card.success strong {
    color: var(--success);
}

.insight-card.warning strong {
    color: var(--warning);
}

.insight-card.danger strong {
    color: var(--danger);
}

.insight-card.info strong {
    color: var(--gold-dark);
}

.decision-note {
    margin-top: auto;
    padding: 12px;
    border-radius: 16px;
    background: rgba(255, 243, 207, .72);
    border: 1px dashed rgba(216, 162, 27, .35);
}

.decision-note span {
    display: block;
    color: var(--primary-dark);
    font-weight: 900;
    font-size: 12px;
    margin-bottom: 4px;
}

.decision-note small {
    color: var(--muted);
    line-height: 1.55;
}

.insight-columns {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 16px;
    margin-top: 18px;
}

.insight-table-card,
.recommendation-box {
    padding: 18px;
    border-radius: 22px;
    background: rgba(255, 255, 255, .82);
    border: 1px solid rgba(216, 162, 27, .20);
    box-shadow: var(--shadow-soft);
}

.mini-panel-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.mini-panel-header h3 {
    margin: 0;
    font-size: 17px;
}

.mini-panel-header p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 13px;
}

.compact-table table th,
.compact-table table td {
    padding: 10px 12px;
    font-size: 13px;
}

.recommendation-box {
    margin-top: 18px;
}

.recommendation-list {
    margin: 0;
    padding-left: 22px;
    display: grid;
    gap: 10px;
    color: var(--text);
}

.recommendation-list li {
    line-height: 1.65;
    padding-left: 4px;
}

.badge.success-badge {
    color: #166534;
    background: rgba(21, 128, 61, .10);
}

.badge.danger-badge {
    color: #991b1b;
    background: rgba(220, 38, 38, .10);
}

.delta-up {
    color: #166534;
    font-weight: 900;
}

.delta-down {
    color: #991b1b;
    font-weight: 900;
}

.muted-text {
    color: var(--muted);
}

.empty-state {
    grid-column: 1 / -1;
    padding: 18px;
    border-radius: 18px;
    background: rgba(255, 255, 255, .76);
    color: var(--muted);
    text-align: center;
}

@media (max-width: 1180px) {
    .insights-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .insight-columns {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .insights-grid {
        grid-template-columns: 1fr;
    }

    .insights-header {
        display: grid;
        gap: 12px;
    }

    .insight-card {
        min-height: auto;
    }
}


/* ==========================================================
   Chart labels enhancement
   เพิ่มพื้นที่ให้กราฟเพื่อแสดงตัวเลขบนกราฟได้ชัดเจน ไม่ถูกตัดขอบ
   ========================================================== */
.chart-box canvas {
    max-width: 100%;
}

.chart-panel {
    overflow: visible;
}

@media (max-width: 720px) {
    .chart-box,
    .chart-box.large {
        min-height: 340px;
    }
}