:root {
    --vm-primary: #1f4fd8;
    --vm-dark: #0f172a;
    --vm-bg: #f4f6fb;
    --vm-border: #e4e8f2;
}

/* ---------- App shell ---------- */
.app-body { background: var(--vm-bg); color: #1f2937; }

.app-navbar {
    background: linear-gradient(90deg, var(--vm-dark), #1e3a8a);
    box-shadow: 0 2px 12px rgba(15, 23, 42, .12);
}
.app-navbar .navbar-brand,
.app-navbar .nav-link { color: #fff !important; }
.app-navbar .navbar-brand { font-weight: 700; letter-spacing: .5px; }
.app-navbar .nav-link:hover { color: #cbd5e1 !important; }

.avatar-circle {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,.18);
    color: #fff;
    display: inline-flex;
    align-items: center; justify-content: center;
    font-weight: 700;
}

.page-title { font-size: 1.45rem; font-weight: 700; color: var(--vm-dark); }

/* ---------- Cards ---------- */
.app-card {
    border: 1px solid var(--vm-border);
    border-radius: .75rem;
    box-shadow: 0 1px 3px rgba(15, 23, 42, .05);
}
.app-card > .card-header {
    background: #fff;
    border-bottom: 1px solid var(--vm-border);
    font-weight: 600;
    color: var(--vm-dark);
    border-radius: .75rem .75rem 0 0;
}

.stat-card {
    background: #fff;
    border: 1px solid var(--vm-border);
    border-radius: .75rem;
    padding: 1rem 1.15rem;
    display: flex;
    align-items: center;
    gap: .9rem;
    height: 100%;
}
.stat-icon {
    width: 46px; height: 46px;
    border-radius: .65rem;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}
.stat-value { font-size: 1.6rem; font-weight: 700; line-height: 1.1; color: var(--vm-dark); }
.stat-label { font-size: .8rem; color: #6b7280; }

/* ---------- Forms ---------- */
.form-label { font-size: .82rem; font-weight: 600; color: #475569; margin-bottom: .25rem; }
.form-control, .form-select { border-color: #d7dceb; }
.form-control:focus, .form-select:focus {
    border-color: var(--vm-primary);
    box-shadow: 0 0 0 .2rem rgba(31, 79, 216, .12);
}
.btn-primary { background: var(--vm-primary); border-color: var(--vm-primary); }
.btn-primary:hover { background: #1a43ba; border-color: #1a43ba; }

.table thead th {
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .4px;
    color: #64748b;
    background: #f8fafc;
    border-bottom: 1px solid var(--vm-border);
}

/* ---------- Auth pages ---------- */
.auth-body {
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 55%, #1f4fd8 100%);
    display: flex; align-items: center; justify-content: center;
    padding: 2rem 1rem;
}
.auth-wrap {
    width: 100%;
    max-width: 940px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
}
.auth-brand { color: #fff; }
.auth-brand i { font-size: 3rem; opacity: .9; }
.auth-brand h1 { font-size: 2rem; font-weight: 800; letter-spacing: 1px; margin: .75rem 0 .5rem; }
.auth-brand p { opacity: .8; margin: 0; }

.auth-card {
    background: #fff;
    border-radius: 1rem;
    padding: 2.25rem;
    box-shadow: 0 20px 45px rgba(0, 0, 0, .25);
}
.auth-title { font-size: 1.4rem; font-weight: 700; color: var(--vm-dark); margin-bottom: .25rem; }
.auth-sub { font-size: .875rem; color: #6b7280; margin-bottom: 1.5rem; }

.validation-summary-valid { display: none; }

@media (max-width: 768px) {
    .auth-wrap { grid-template-columns: 1fr; gap: 1.5rem; }
    .auth-brand { text-align: center; }
    .auth-card { padding: 1.5rem; }
}