:root {
    --primary: #1f6feb;
    --primary-strong: #124fbc;
    --accent: #0ea5a0;
    --accent-soft: #d8f7f5;
    --surface: #f8fbff;
    --surface-strong: #ffffff;
    --border: rgba(15, 23, 42, 0.08);
    --text: #0f172a;
    --muted: #64748b;
    --shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
    --shadow-soft: 0 10px 25px rgba(15, 23, 42, 0.06);
}

html {
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

html, body {
    height: 100%;
    margin: 0;
}

body {
    font-family: "Segoe UI", Inter, Roboto, Arial, sans-serif;
    background: linear-gradient(135deg, #eef7ff 0%, #f8fbff 100%);
    color: var(--text);
}

a {
    text-decoration: none;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus,
.form-select:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem rgba(31, 111, 235, 0.25);
}

.page-shell {
    display: flex;
    min-height: 100vh;
}

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

.main-content {
    flex: 1;
    padding: 1.5rem 1.25rem 2.5rem;
}

.app-sidebar {
    width: 280px;
    flex-shrink: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(241,248,255,0.98) 100%);
    border-right: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.sidebar-header {
    padding: 0.5rem 0.25rem;
}

.brand-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-strong);
}

.brand-icon {
    display: inline-grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.8rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: var(--shadow-soft);
}

.sidebar-subtitle {
    margin: 0.4rem 0 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.sidebar-nav .nav-link,
.topbar-pill,
.topbar .btn {
    transition: all 0.2s ease;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.8rem 0.95rem;
    border-radius: 0.9rem;
    color: var(--text);
    font-weight: 600;
}

.sidebar-nav .nav-link:hover,
.sidebar-nav .nav-link:focus {
    background: rgba(31, 111, 235, 0.08);
    color: var(--primary-strong);
}

.sidebar-footer {
    margin-top: auto;
}

.sidebar-pill {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    border-radius: 1rem;
    padding: 0.9rem 1rem;
    background: linear-gradient(135deg, rgba(31, 111, 235, 0.12), rgba(14, 165, 160, 0.1));
    color: var(--primary-strong);
    font-weight: 600;
}

.topbar {
    padding: 1rem 1.25rem 0.25rem;
}

.topbar .container-fluid {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid var(--border);
    border-radius: 1.25rem;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-soft);
    padding: 0.8rem 1rem;
}

.topbar-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.6rem 0.85rem;
    font-weight: 600;
}

.topbar-pill:hover,
.topbar-pill:focus {
    color: var(--primary-strong);
    border-color: rgba(31, 111, 235, 0.22);
}

.card-surface,
.auth-card,
.hero-card,
.dashboard-card,
.table-card {
    border: 1px solid var(--border);
    border-radius: 1.25rem;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-soft);
}

.hero-card {
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(31, 111, 235, 0.98) 0%, rgba(14, 165, 160, 0.92) 100%);
    color: white;
}

.hero-card .text-muted,
.hero-card .text-secondary {
    color: rgba(255,255,255,0.85) !important;
}

.btn-gradient-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border: 0;
    box-shadow: var(--shadow-soft);
}

.btn-gradient-primary:hover,
.btn-gradient-primary:focus {
    color: white;
    filter: brightness(1.04);
}

.btn-outline-primary,
.btn-outline-success,
.btn-outline-warning,
.btn-outline-secondary,
.btn-outline-danger,
.btn-outline-info {
    border-radius: 999px;
    font-weight: 600;
}

.form-control,
.form-select,
.form-check-input {
    border-radius: 0.9rem;
    border: 1px solid rgba(15, 23, 42, 0.12);
    padding: 0.7rem 0.9rem;
}

.form-control:focus,
.form-select:focus {
    border-color: rgba(31, 111, 235, 0.35);
}

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

.metric-card {
    border-radius: 1rem;
    padding: 1rem 1.1rem;
    background: var(--surface-strong);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
}

.metric-icon {
    display: inline-grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.85rem;
    background: rgba(31, 111, 235, 0.12);
    color: var(--primary-strong);
}

.chart-bars {
    display: flex;
    align-items: end;
    gap: 0.75rem;
    height: 170px;
    margin-top: 1rem;
}

.chart-bars .bar {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    color: var(--muted);
    font-size: 0.85rem;
}

.chart-bars .bar-track {
    width: 100%;
    height: 120px;
    background: linear-gradient(180deg, rgba(31, 111, 235, 0.08), rgba(14, 165, 160, 0.06));
    border-radius: 999px;
    display: flex;
    align-items: end;
    overflow: hidden;
}

.chart-bars .bar-fill {
    width: 100%;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
}

.table-card .table {
    margin-bottom: 0;
}

.table thead th {
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    color: var(--muted);
}

.app-footer {
    padding: 1.25rem 1.25rem 1.5rem;
    color: var(--muted);
    font-size: 0.95rem;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.2rem;
}

.page-subtitle {
    color: var(--muted);
    margin-bottom: 0;
}

.page-toolbar {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    flex-wrap: wrap;
}

.filter-card,
.section-card,
.profile-card,
.detail-card {
    border: 1px solid var(--border);
    border-radius: 1.15rem;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow-soft);
    padding: 1rem 1.1rem;
}

.filter-card .form-control,
.filter-card .form-select {
    border-radius: 999px;
}

.page-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border-radius: 999px;
    padding: 0.55rem 0.8rem;
    background: rgba(31, 111, 235, 0.08);
    color: var(--primary-strong);
    font-weight: 600;
}

.empty-state {
    border: 1px dashed rgba(31, 111, 235, 0.25);
    border-radius: 1rem;
    padding: 1.2rem 1.25rem;
    background: rgba(31, 111, 235, 0.04);
    color: var(--muted);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.detail-item {
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: var(--surface);
    padding: 0.95rem 1rem;
}

.detail-label {
    display: block;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
    margin-bottom: 0.25rem;
}

.detail-value {
    font-weight: 600;
    color: var(--text);
}

.profile-card {
    padding: 1.4rem;
}

.profile-hero {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.profile-avatar {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid rgba(255,255,255,0.85);
    box-shadow: var(--shadow-soft);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.stat-chip {
    border-radius: 1rem;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(31, 111, 235, 0.08), rgba(14, 165, 160, 0.08));
    border: 1px solid var(--border);
}

.table-card {
    padding: 1rem;
}

.table-card .table thead th {
    background: rgba(31, 111, 235, 0.05);
    color: var(--primary-strong);
}

.table-card .table tbody tr:hover {
    background: rgba(31, 111, 235, 0.04);
}

.btn-rounded {
    border-radius: 999px;
}

.pagination .page-link {
    border-radius: 999px;
    margin: 0 0.2rem;
    border-color: var(--border);
    color: var(--primary-strong);
}

.pagination .page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-color: transparent;
    color: white;
}

@media (max-width: 991.98px) {
    .page-shell {
        flex-direction: column;
    }

    .main-content {
        padding: 1rem 1rem 2rem;
    }
}

@media (max-width: 767.98px) {
    .detail-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
    }
}

@media (max-width: 575.98px) {
    .topbar .container-fluid {
        padding: 0.75rem;
    }

    .hero-card {
        padding: 1.2rem;
    }
}