@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-01: #0f172a;
    --bg-02: #111827;
    --bg-03: #0b1220;
    --card: #161f35;
    --card-contrast: #1e2a43;
    --primary: #5f9bff;
    --primary-strong: #3f7ae0;
    --accent: #7dd3fc;
    --text: #e5e7eb;
    --muted: #9cc5ff;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    --radius: 14px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    background: radial-gradient(circle at 20% 20%, rgba(95, 155, 255, 0.12), transparent 35%),
                radial-gradient(circle at 80% 0%, rgba(125, 211, 252, 0.12), transparent 28%),
                linear-gradient(135deg, var(--bg-01), var(--bg-02));
    color: var(--text);
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    min-height: 100vh;
}

a {
    color: var(--accent);
    text-decoration: none;
}

.layout-shell {
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: linear-gradient(135deg, var(--bg-01), var(--bg-02));
    border-right: 1px solid var(--border);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-brand {
    padding: 24px;
    border-bottom: 1px solid var(--border);
}

.sidebar-title {
    font-weight: 700;
    letter-spacing: 0.4px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-list {
    padding: 12px 0;
    margin: 0;
    list-style: none;
    flex: 1;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    color: var(--muted);
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
}

.nav-item a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.03);
}

.nav-item a.active {
    color: var(--text);
    border-left-color: var(--primary);
    background: linear-gradient(90deg, rgba(95, 155, 255, 0.12), transparent);
}

.submenu {
    padding-left: 14px;
}

.submenu a {
    padding-left: 34px;
    font-size: 0.95rem;
}

.layout-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(8px);
    background: rgba(15, 23, 42, 0.7);
    position: sticky;
    top: 0;
    z-index: 10;
}

.brand-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(95, 155, 255, 0.12);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text);
    font-weight: 600;
}

.btn-ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 10px;
    padding: 8px 12px;
    transition: all 0.2s ease;
}

.btn-ghost:hover {
    border-color: var(--primary);
    color: #fff;
    background: rgba(95, 155, 255, 0.15);
}

.content {
    padding: 20px;
}

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

.card-header {
    border-bottom: 1px solid var(--border);
    background: linear-gradient(120deg, rgba(95, 155, 255, 0.08), rgba(17, 24, 39, 0.6));
    padding: 14px 18px;
    font-weight: 600;
    color: var(--text);
}

.card-body {
    padding: 18px;
}

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

.table thead th {
    border-color: var(--border);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    font-size: 0.85rem;
    color: var(--muted);
}

.table tbody tr {
    border-color: var(--border);
}

.table-hover tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.dataTables_length label,
.dataTables_filter label,
.dataTables_info {
    color: var(--muted);
}

.dataTables_length select {
    color: var(--text);
    background: var(--card-contrast);
    border: 1px solid var(--border);
}

.form-control,
.form-select,
.form-check-input {
    background: var(--card-contrast);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 10px;
}

.form-control::placeholder,
textarea::placeholder {
    color: #dbe4ff;
    opacity: 1;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.15rem rgba(95, 155, 255, 0.25);
}

.form-label {
    color: var(--muted);
    font-weight: 600;
}

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

.btn-primary {
    background: linear-gradient(120deg, var(--primary), var(--primary-strong));
    border: none;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(95, 155, 255, 0.25);
}

.btn-outline-light {
    border-color: var(--border);
    color: var(--text);
}

.alert {
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    background: rgba(95, 155, 255, 0.08);
}

.badge-soft {
    background: rgba(95, 155, 255, 0.12);
    color: var(--text);
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 0.85rem;
    border: 1px solid var(--border);
}

.toast-container {
    position: fixed;
    top: 14px;
    right: 14px;
    z-index: 1055;
}

.shadow-soft {
    box-shadow: var(--shadow);
}

.footer {
    padding: 12px 20px;
    color: var(--muted);
    border-top: 1px solid var(--border);
    background: rgba(15, 23, 42, 0.7);
}

.form-toggle {
    display: none;
}

.form-toggle.active {
    display: block;
}

@media (max-width: 992px) {
    .sidebar {
        position: fixed;
        z-index: 20;
        height: 100vh;
    }
    .layout-shell {
        flex-direction: column;
    }
    .layout-main {
        padding-top: 0;
    }
}