:root {
    --cu-bg-1: #0b1220;
    --cu-bg-2: #132035;
    --cu-surface: #152238;
    --cu-surface-2: #1a2b45;
    --cu-border: rgba(148, 163, 184, 0.24);
    --cu-text: #e6eefb;
    --cu-muted: #9fb0c8;
    --cu-primary: #17c3b2;
    --cu-primary-2: #0ea5e9;
    --cu-danger: #f43f5e;
}

body.cu-body {
    min-height: 100vh;
    color: var(--cu-text);
    background:
        radial-gradient(1000px 500px at -10% -20%, rgba(23, 195, 178, 0.2), transparent 60%),
        radial-gradient(800px 500px at 110% 10%, rgba(14, 165, 233, 0.2), transparent 60%),
        linear-gradient(160deg, var(--cu-bg-1), var(--cu-bg-2));
}

.cu-navbar {
    background: rgba(10, 16, 30, 0.7) !important;
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--cu-border);
}

.cu-brand {
    letter-spacing: 0.03em;
    color: #9ce8df !important;
}

.cu-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01)), var(--cu-surface);
    border: 1px solid var(--cu-border);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.3);
}

.cu-card-soft {
    background: rgba(20, 33, 54, 0.75);
    border: 1px solid var(--cu-border);
}

.cu-form-control,
.cu-form-control:focus,
.cu-form-select,
.cu-form-select:focus {
    background: var(--cu-surface-2);
    color: var(--cu-text);
    border-color: var(--cu-border);
    box-shadow: none;
}

.cu-form-control::placeholder {
    color: #87a0bf;
}

.cu-btn-primary {
    background: linear-gradient(120deg, var(--cu-primary), var(--cu-primary-2));
    border: 0;
    color: #082032;
    font-weight: 700;
}

.cu-btn-primary:hover {
    filter: brightness(1.05);
    color: #03101c;
}

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

.cu-table {
    --bs-table-bg: transparent;
    color: var(--cu-text);
}

.cu-table thead th {
    border-color: rgba(148, 163, 184, 0.2);
    color: #9fb0c8;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cu-table tbody td {
    border-color: rgba(148, 163, 184, 0.14);
}

.cu-table tbody tr:hover {
    background: rgba(23, 195, 178, 0.08);
}

.cu-badge-version {
    background: rgba(23, 195, 178, 0.2);
    border: 1px solid rgba(23, 195, 178, 0.4);
    color: #c8f8f1;
}

.cu-linkcode {
    background: rgba(15, 23, 42, 0.65);
    border: 1px solid rgba(148, 163, 184, 0.2);
    color: #d5e5fb;
    padding: 0.18rem 0.45rem;
    border-radius: 0.5rem;
}

.cu-auth-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}