:root {
    --bg: #eef1f5;
    --surface: #ffffff;
    --surface-soft: #f7f9fc;
    --text: #1f2937;
    --muted: #6b7280;
    --brand: #0d6efd;
    --brand-dark: #0b4ea3;
    --border: #d9e1ea;
    --radius: 14px;
    --shadow: 0 8px 24px rgba(17, 24, 39, 0.08);
}

body {
    background: radial-gradient(circle at 10% -20%, #ffffff 0%, var(--bg) 42%);
    color: var(--text);
}

.navbar {
    background: linear-gradient(90deg, #0d6efd 0%, #1a79f7 55%, #35a0ff 100%);
    box-shadow: 0 2px 10px rgba(13, 110, 253, 0.28);
}

.navbar-brand img {
    height: 40px;
}

.app-main {
    margin-top: 24px;
}

.page-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 14px;
}

.page-head h2 {
    margin: 0;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.page-subtitle {
    color: var(--muted);
    margin-bottom: 18px;
}

.app-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.app-card .card-body {
    padding: 18px;
}

.app-card .card-title {
    font-weight: 700;
    margin-bottom: 8px;
}

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

.table {
    background: var(--surface);
    border-radius: 10px;
    overflow: hidden;
}

.table thead th {
    border-top: 0;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    color: var(--text);
    background: var(--surface-soft);
}

.table td, .table th {
    vertical-align: middle;
}

.form-control, .custom-select, .form-control-file {
    border-radius: 10px;
    border-color: var(--border);
}

.list-group-item {
    border-color: var(--border);
}

.btn-soft {
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
}

.btn-soft:hover {
    background: var(--surface-soft);
    color: var(--text);
}

.grid-info {
    display: block;
    width: 100%;
}

.grid-info .info-box {
    width: 100%;
    color: var(--text);
}

footer {
    background: transparent;
    color: var(--muted);
    margin-top: 36px;
}

#hot {
    width: 100%;
    min-height: 420px;
    overflow: visible;
}

@media (max-width: 991.98px) {
    .navbar-nav {
        align-items: flex-start !important;
        margin-top: 8px;
    }

    .page-head {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-head .btn {
        width: 100%;
    }
}