:root {
    --nb-primary: #6571ff;
    --nb-primary-dark: #525de3;
    --nb-bg: #f4f7fb;
    --nb-surface: #ffffff;
    --nb-text: #182135;
    --nb-muted: #7987a1;
    --nb-border: #e5e9f2;
    --nb-success: #05a34a;
    --nb-danger: #ff3366;
    --nb-warning: #fbbc06;
}

* { box-sizing: border-box; }

body.nobleui-body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: var(--nb-bg);
    color: var(--nb-text);
}

a { color: var(--nb-primary); text-decoration: none; }
a:hover { color: var(--nb-primary-dark); }

.main-wrapper {
    min-height: 100vh;
    display: flex;
}

.sidebar {
    width: 250px;
    background: #111827;
    color: #d1d5db;
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 1030;
    overflow-y: auto;
    transition: transform .2s ease;
}

.sidebar-brand {
    padding: 1rem 1.25rem;
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-weight: 700;
    letter-spacing: .3px;
}

.sidebar-nav {
    list-style: none;
    margin: 0;
    padding: .75rem;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: .75rem .9rem;
    border-radius: .5rem;
    color: #d1d5db;
    margin-bottom: .25rem;
    font-size: .95rem;
}

.sidebar-nav a.active,
.sidebar-nav a:hover {
    background: rgba(101,113,255,.2);
    color: #fff;
}

.page-wrapper {
    margin-left: 250px;
    width: calc(100% - 250px);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.navbar {
    background: var(--nb-surface);
    border-bottom: 1px solid var(--nb-border);
    padding: .9rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1020;
}

.navbar .btn-icon {
    border: 1px solid var(--nb-border);
    background: #fff;
    color: #4b5563;
    border-radius: .5rem;
    width: 2.25rem;
    height: 2.25rem;
    cursor: pointer;
}

.content-area {
    padding: 1.5rem;
    flex: 1;
}

.page-title {
    margin: 0 0 1rem;
    font-size: 1.35rem;
    font-weight: 700;
}

.row { display: flex; flex-wrap: wrap; margin: -.5rem; }
.col-12, .col-6, .col-4, .col-3, .col-md-6, .col-lg-4, .col-lg-3, .col-lg-6, .col-lg-8 {
    padding: .5rem;
    width: 100%;
}
@media (min-width: 768px) {
    .col-md-6 { width: 50%; }
}
@media (min-width: 992px) {
    .col-lg-3 { width: 25%; }
    .col-lg-4 { width: 33.3333%; }
    .col-lg-6 { width: 50%; }
    .col-lg-8 { width: 66.6667%; }
}

.card {
    background: var(--nb-surface);
    border: 1px solid var(--nb-border);
    border-radius: .75rem;
    box-shadow: 0 8px 18px rgba(15, 23, 42, .04);
}

.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--nb-border);
    font-weight: 600;
}

.card-body { padding: 1.25rem; }

.metric {
    font-size: 1.65rem;
    font-weight: 700;
    margin: .15rem 0;
}

.muted { color: var(--nb-muted); font-size: .9rem; }

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    text-align: left;
    padding: .75rem;
    border-bottom: 1px solid var(--nb-border);
    font-size: .92rem;
}

.badge {
    display: inline-block;
    border-radius: 999px;
    padding: .2rem .6rem;
    font-size: .78rem;
    font-weight: 600;
}

.badge-success { background: rgba(5,163,74,.14); color: #056738; }
.badge-warning { background: rgba(251,188,6,.18); color: #876400; }
.badge-danger { background: rgba(255,51,102,.14); color: #a71f44; }

.form-group { margin-bottom: 1rem; }
.label { display: block; margin-bottom: .4rem; font-size: .9rem; color: #334155; }
.form-control {
    width: 100%;
    border: 1px solid #d6dce8;
    background: #fff;
    border-radius: .5rem;
    padding: .65rem .75rem;
    font-size: .95rem;
}
.form-control:focus {
    outline: 0;
    border-color: var(--nb-primary);
    box-shadow: 0 0 0 3px rgba(101,113,255,.15);
}

.form-check { display: flex; gap: .5rem; align-items: center; }
.form-check input { width: 1rem; height: 1rem; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: .5rem;
    padding: .58rem .95rem;
    font-size: .92rem;
    font-weight: 600;
    cursor: pointer;
}

.btn-primary { background: var(--nb-primary); color: #fff; }
.btn-primary:hover { background: var(--nb-primary-dark); color: #fff; }
.btn-outline { background: transparent; border-color: #cfd7e6; color: #374151; }
.btn-danger { background: var(--nb-danger); color: #fff; }

.alert {
    border-radius: .5rem;
    padding: .75rem 1rem;
    margin-bottom: 1rem;
    font-size: .9rem;
}
.alert-danger { background: rgba(255,51,102,.11); color: #982447; }
.alert-success { background: rgba(5,163,74,.1); color: #0b6a3a; }
.alert-info { background: rgba(52,168,255,.13); color: #0f5c99; }

.error-text { color: #b91c1c; font-size: .82rem; margin-top: .35rem; }

.auth-wrapper {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.25rem;
    background: radial-gradient(circle at top right, rgba(101,113,255,.16), transparent 42%), #f4f7fb;
}

.auth-card {
    width: min(470px, 100%);
    background: #fff;
    border: 1px solid var(--nb-border);
    border-radius: .9rem;
    box-shadow: 0 14px 34px rgba(15, 23, 42, .08);
    padding: 1.4rem;
}

.auth-brand { margin-bottom: 1rem; font-size: 1.2rem; font-weight: 700; color: #111827; }
.auth-footer { margin-top: 1rem; color: var(--nb-muted); font-size: .85rem; }

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + .5rem);
    right: 0;
    min-width: 180px;
    border: 1px solid var(--nb-border);
    background: #fff;
    border-radius: .5rem;
    padding: .35rem;
    box-shadow: 0 10px 30px rgba(2,8,20,.12);
    display: none;
}

.dropdown.open .dropdown-menu { display: block; }
.dropdown-menu button,
.dropdown-menu a {
    width: 100%;
    border: 0;
    background: transparent;
    text-align: left;
    padding: .55rem .65rem;
    border-radius: .4rem;
    color: #334155;
    font-size: .9rem;
    cursor: pointer;
}
.dropdown-menu button:hover,
.dropdown-menu a:hover { background: #f1f5f9; }

.footer {
    border-top: 1px solid var(--nb-border);
    background: #fff;
    color: var(--nb-muted);
    font-size: .84rem;
    padding: .85rem 1.5rem;
}

.sidebar-toggle { display: none; }

@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
    }
    body.sidebar-open .sidebar {
        transform: translateX(0);
    }
    .page-wrapper {
        margin-left: 0;
        width: 100%;
    }
    .sidebar-toggle { display: inline-flex; }
}