:root {
    --bs-font-sans-serif: 'Prompt', system-ui, -apple-system, sans-serif;

    --bs-primary: #fa7921;
    --bs-primary-rgb: 250, 121, 33;
    --bs-info: #0f82aa;
    --bs-info-rgb: 15, 130, 170;
    --bs-success: #10b981;
    --bs-success-rgb: 16, 185, 129;
    --bs-danger: #ef4444;
    --bs-danger-rgb: 239, 68, 68;
    --bs-warning: #f9e154;
    --bs-warning-rgb: 249, 225, 84;

    --bs-link-color: var(--bs-primary);
    --bs-link-color-rgb: var(--bs-primary-rgb);
    --bs-link-hover-color: #d9660f;
    --bs-link-hover-color-rgb: 217, 102, 15;
}

[data-bs-theme='dark'] {
    --bs-body-bg: #14181f;
    --bs-body-color: #e6e8ec;
}

* {
    font-family: var(--bs-font-sans-serif);
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.btn-primary,
.badge.bg-primary,
.bg-primary {
    color: #fff !important;
}

.btn-warning,
.bg-warning {
    color: #3f3506 !important;
}

.navbar-brand img {
    height: 36px;
}

/* ---------------------------------------------------------------- App shell */
.app-shell {
    display: flex;
    flex: 1 1 auto;
    min-height: 0;
}

.app-sidebar {
    width: 260px;
    flex-shrink: 0;
    background: var(--bs-body-bg);
    border-right: 1px solid var(--bs-border-color);
    overflow-y: auto;
}

.app-sidebar .nav-link {
    color: var(--bs-body-color);
    border-radius: 0.5rem;
    padding: 0.55rem 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.app-sidebar .nav-link.active {
    background: var(--bs-primary);
    color: #fff !important;
}

.app-sidebar .nav-link:hover:not(.active) {
    background: rgba(var(--bs-primary-rgb), 0.12);
}

.app-main {
    flex: 1 1 auto;
    min-width: 0;
    padding: 1.5rem;
}

@media (max-width: 991.98px) {
    .app-sidebar {
        position: fixed;
        z-index: 1040;
        top: 0;
        bottom: 0;
        left: -280px;
        transition: left 0.2s ease;
        box-shadow: 0 0 24px rgba(0, 0, 0, 0.15);
    }

    .app-sidebar.is-open {
        left: 0;
    }

    .app-main {
        padding: 1rem;
    }
}

/* ---------------------------------------------------------------- Utility */
.stat-card {
    border-radius: 1rem;
    border: 1px solid var(--bs-border-color);
}

.led-board {
    background: #0b1220;
    color: #f5f5f5;
    min-height: 100vh;
}

.led-board .rank-1 {
    color: #fbbf24;
}

.led-board .rank-2 {
    color: #cbd5e1;
}

.led-board .rank-3 {
    color: #d97706;
}

.card-hover {
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.08);
}

.table-responsive {
    max-width: 100%;
}

.qr-scan-frame {
    max-width: 420px;
    margin: 0 auto;
}

/* ---------------------------------------------------------------- Score grid */
[data-status] {
    position: relative;
}

[data-status='saving'] input {
    border-color: var(--bs-warning);
}

[data-status='saved'] input {
    border-color: var(--bs-success);
}

[data-status='error'] input {
    border-color: var(--bs-danger);
}