:root {
    --brand: #0b5c63;
    --brand-dark: #073f44;
    --ink: #172124;
    --muted: #4c5a5e;
    --line: #c8d4d7;
    --surface: #ffffff;
    --page: #f4f8f8;
    --focus: #f4b942;
}

body {
    background: var(--page);
    color: var(--ink);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1.125rem;
    line-height: 1.55;
}

.app-header {
    background: var(--brand);
    color: #fff;
    padding: 1.25rem 0;
}

.app-title {
    font-size: clamp(1.65rem, 4vw, 2.4rem);
    font-weight: 800;
    margin: 0;
}

.app-subtitle {
    font-size: 1.1rem;
    margin: .25rem 0 0;
}

.main-shell {
    max-width: 1040px;
}

.form-panel,
.message-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 8px 22px rgba(12, 45, 49, .08);
}

.section-title {
    border-bottom: 3px solid var(--brand);
    color: var(--brand-dark);
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 1rem;
    padding-bottom: .4rem;
}

.form-label,
.form-check-label {
    color: var(--ink);
    font-size: 1.12rem;
    font-weight: 700;
}

.form-text {
    color: var(--muted);
    font-size: 1rem;
}

.form-control,
.form-select {
    border: 2px solid #91a3a8;
    border-radius: 6px;
    font-size: 1.12rem;
    min-height: 3.25rem;
    padding: .65rem .8rem;
}

.form-control:focus,
.form-select:focus,
.btn:focus-visible,
.nav-link:focus-visible {
    border-color: var(--brand);
    box-shadow: 0 0 0 .25rem rgba(244, 185, 66, .55);
    outline: 3px solid var(--focus);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--brand);
    border-color: var(--brand);
    border-radius: 6px;
    font-size: 1.2rem;
    font-weight: 800;
    min-height: 3.25rem;
    padding: .65rem 1.25rem;
}

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

.btn-outline-light {
    border-width: 2px;
    font-weight: 700;
}

.required {
    color: #9b1c1c;
    font-weight: 800;
}

.table {
    font-size: 1rem;
}

.table thead th {
    background: var(--brand-dark);
    color: #fff;
    vertical-align: middle;
}

.table td {
    vertical-align: middle;
}

.badge-status {
    background: #e4f2ef;
    border: 1px solid #9cc7bf;
    color: var(--brand-dark);
    font-size: .95rem;
}

@media (max-width: 700px) {
    body {
        font-size: 1.05rem;
    }

    .app-header {
        padding: 1rem 0;
    }

    .form-panel,
    .message-panel {
        border-left: 0;
        border-right: 0;
        border-radius: 0;
    }

    .btn-primary {
        width: 100%;
    }
}