:root {
    --app-primary: #0f3d5c;
    --app-primary-dark: #0a2c43;
    --app-accent: #2a9d8f;
    --app-bg: #f3f6f8;
    --app-surface: #ffffff;
    --app-text: #1c2733;
    --app-border: #d7e0e8;
    --app-muted: #5c6b80;
    --app-navbar-from: #0f3d5c;
    --app-navbar-to: #14532d;
}

html { font-size: 15px; }

body {
    background-color: var(--app-bg);
    color: var(--app-text);
    font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main { flex: 1 0 auto; }

.app-navbar {
    background: linear-gradient(90deg, var(--app-navbar-from) 0%, var(--app-navbar-to) 100%);
    box-shadow: 0 2px 12px rgba(15, 61, 92, .2);
}

.app-navbar .navbar-brand {
    color: #fff;
    display: flex;
    align-items: center;
    gap: .6rem;
    font-weight: 600;
}

.brand-mark {
    background: rgba(255, 255, 255, .16);
    border-radius: 8px;
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: .85rem;
    font-weight: 700;
}

.app-navbar .nav-link {
    color: rgba(255, 255, 255, .82);
    font-weight: 500;
    padding-inline: .85rem;
    border-radius: 6px;
}

.app-navbar .nav-link:hover,
.app-navbar .navbar-brand:hover { color: #fff; }

.navbar-toggler { border-color: rgba(255, 255, 255, .35); }
.navbar-toggler-icon {
    filter: invert(1);
}

.card {
    border: 1px solid var(--app-border);
    box-shadow: 0 1px 2px rgba(28, 39, 51, .04);
}

.card-header.section {
    background: #f8fafc;
    font-weight: 600;
    font-size: .92rem;
}

.btn-icon-svg {
    width: 1.1rem;
    height: 1.1rem;
    display: block;
    flex-shrink: 0;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    min-width: 2.25rem;
    padding-left: 0;
    padding-right: 0;
}

.btn:has(> .btn-icon-svg) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
}

.btn-primary {
    background-color: var(--app-primary);
    border-color: var(--app-primary);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--app-primary-dark);
    border-color: var(--app-primary-dark);
}

.page-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    margin-bottom: 1.25rem;
}

.page-head h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.page-head .subtitle {
    color: var(--app-muted);
    font-size: .88rem;
    margin-top: .15rem;
}

.text-small { font-size: .82rem; }

.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
}

.login-card { width: 100%; max-width: 420px; }
.login-card .card-body { padding: 2rem; }

.login-logo {
    background: var(--app-primary);
    border-radius: 12px;
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    height: 48px;
    width: 48px;
}

.app-footer {
    border-top: 1px solid var(--app-border);
    color: var(--app-muted);
    font-size: .82rem;
    padding: 1rem 0;
    margin-top: auto;
}

.table thead th {
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .03em;
    color: var(--app-muted);
    font-weight: 600;
}

.alert-success {
    background: #ecfdf3;
    border-color: #abefc6;
    color: #085d3a;
}