:root {
    --brand: #0f766e;
    --brand-dark: #115e59;
    --ink: #172033;
    --muted: #667085;
    --line: #d8dee8;
    --surface: #ffffff;
    --soft: #f6f8fb;
}

body {
    color: var(--ink);
    background: var(--soft);
}

.navbar-brand {
    color: var(--brand-dark);
}

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

.course-card,
.info-panel,
.form-shell,
.success-panel,
.empty-state,
.admin-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 1.25rem;
}

.course-card {
    display: flex;
    flex-direction: column;
}

.course-card .btn {
    align-self: flex-start;
    margin-top: auto;
}

.course-details {
    display: grid;
    grid-template-columns: minmax(80px, auto) 1fr;
    gap: .4rem .8rem;
}

.course-details dt {
    color: var(--muted);
    font-weight: 600;
}

.course-details dd {
    margin: 0;
}

.pix-box {
    min-height: 120px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .86rem;
}

.fieldset-box {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 1rem;
}

.fieldset-box legend {
    float: none;
    width: auto;
    padding: 0 .4rem;
    font-size: .98rem;
    font-weight: 700;
}

.success-panel,
.empty-state {
    max-width: 720px;
    text-align: center;
}

.success-mark {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    display: inline-grid;
    place-items: center;
    background: #dcfce7;
    color: #166534;
    font-weight: 800;
    margin-bottom: 1rem;
}

.code-box {
    border: 1px dashed var(--brand);
    border-radius: 8px;
    padding: 1rem;
    background: #ecfdf5;
}

.code-box span {
    display: block;
    color: var(--muted);
    font-size: .85rem;
}

.code-box strong {
    display: block;
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    letter-spacing: 0;
}

.table-actions {
    min-width: 260px;
}

.certificate-page {
    background: #fff;
    border: 8px double #0f766e;
    min-height: 720px;
    padding: 3rem;
}

.certificate-title {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 800;
    color: #115e59;
}

.certificate-name {
    font-size: clamp(1.7rem, 4vw, 3rem);
    font-weight: 700;
    border-bottom: 2px solid #172033;
    display: inline-block;
    padding: .2rem 2rem;
}

.signature-line {
    border-top: 1px solid #172033;
    min-width: 260px;
    display: inline-block;
    padding-top: .5rem;
}

@media print {
    body {
        background: #fff;
    }

    .no-print,
    .navbar {
        display: none !important;
    }

    main {
        padding: 0 !important;
    }

    .container {
        max-width: none !important;
        width: 100% !important;
        padding: 0 !important;
    }

    .admin-panel,
    .form-shell,
    .info-panel {
        border: 0;
        padding: 0;
    }

    .certificate-page {
        border: 8px double #0f766e;
        min-height: 96vh;
        page-break-inside: avoid;
    }
}