/* Certificados — visualización e impresión */
.certificate-page {
    max-width: 960px;
    margin: 0 auto;
}

.certificate-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    align-items: center;
}

.certificate-document {
    position: relative;
    padding: var(--space-2);
    border-radius: var(--radius-2xl);
    background:
        linear-gradient(135deg, rgba(34, 211, 238, 0.12) 0%, transparent 50%),
        var(--color-bg-card);
    border: 1px solid var(--color-border-accent);
    box-shadow: var(--shadow-card);
}

.certificate-document__inner {
    padding: clamp(2rem, 5vw, 4rem);
    text-align: center;
    background: #fafbfc;
    color: #0f172a;
    border: 3px solid #0891b2;
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.certificate-document__inner::before,
.certificate-document__inner::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 80px;
    border: 2px solid rgba(8, 145, 178, 0.35);
    pointer-events: none;
}

.certificate-document__inner::before {
    top: 16px;
    left: 16px;
    border-right: none;
    border-bottom: none;
}

.certificate-document__inner::after {
    bottom: 16px;
    right: 16px;
    border-left: none;
    border-top: none;
}

.certificate-document__brand {
    font-family: var(--font-display);
    font-size: var(--font-size-sm);
    font-weight: 800;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #0891b2;
    margin-bottom: var(--space-6);
}

.certificate-document__title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: #0e7490;
    margin-bottom: var(--space-6);
    line-height: 1.2;
}

.certificate-document__label {
    font-size: var(--font-size-base);
    color: #475569;
    margin-bottom: var(--space-2);
}

.certificate-document__name {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    color: #0f172a;
    margin: var(--space-4) 0;
}

.certificate-document__course {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: #0891b2;
    margin: var(--space-4) 0 var(--space-6);
}

.certificate-document__meta {
    font-size: var(--font-size-sm);
    color: #64748b;
    margin: var(--space-2) 0;
}

.certificate-document__footer {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid #e2e8f0;
}

.certificate-document__code {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    color: #475569;
    margin-top: var(--space-2);
}

.certificate-document__verify {
    display: inline-block;
    margin-top: var(--space-3);
    font-size: var(--font-size-xs);
    color: #0891b2;
    word-break: break-all;
}

/* Listado panel alumno */
.certificate-card {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    transition: transform var(--transition-base), border-color var(--transition-base);
}

.certificate-card:hover {
    transform: translateY(-3px);
    border-color: var(--color-border-hover);
}

.certificate-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid var(--color-border-accent);
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
}

.certificate-card__title {
    font-family: var(--font-display);
    font-size: var(--font-size-lg);
    line-height: 1.3;
}

.certificate-card__code {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    padding: var(--space-1) var(--space-2);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    color: var(--color-accent-soft);
}

.certificate-card__meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.certificate-card .app-tile__actions {
    flex-wrap: wrap;
}

/* Verificación pública */
.certificate-verify-layout {
    max-width: 640px;
    margin: 0 auto;
}

.certificate-verify-form {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.certificate-verify-panel {
    max-width: 480px;
    margin-bottom: var(--space-6);
    padding: var(--space-5) var(--space-6);
}

.certificate-verify-panel__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin: 0 0 var(--space-3);
}

.certificate-verify-panel .certificate-verify-form {
    margin-bottom: 0;
}

.certificate-verify-form input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
}

.certificate-result {
    text-align: center;
    padding: var(--space-10) var(--space-8);
}

.certificate-result--valid {
    border-color: var(--color-border-accent);
    background:
        linear-gradient(160deg, rgba(34, 211, 238, 0.06) 0%, transparent 45%),
        var(--color-bg-card);
}

.certificate-result__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 700;
    margin-bottom: var(--space-5);
}

.certificate-result__badge--valid {
    background: rgba(52, 211, 153, 0.12);
    color: var(--color-green-light);
    border: 1px solid rgba(52, 211, 153, 0.25);
}

.certificate-result__badge--invalid {
    background: rgba(248, 113, 113, 0.1);
    color: var(--color-red);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

.certificate-result__hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.certificate-result__hint code {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    padding: 2px 6px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
}

.course-complete-banner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-6) var(--space-8);
    margin-bottom: var(--space-8);
    background:
        linear-gradient(135deg, rgba(52, 211, 153, 0.1) 0%, transparent 50%),
        var(--color-bg-card);
    border-color: rgba(52, 211, 153, 0.3);
}

@media print {
    .header,
    .footer,
    .lesson-actions,
    .no-print,
    .certificate-toolbar {
        display: none !important;
    }

    .certificate-document {
        background: none;
        border: none;
        box-shadow: none;
        padding: 0;
    }

    .certificate-document__inner {
        border-width: 4px;
    }
}

@media (max-width: 600px) {
    .certificate-verify-form {
        flex-direction: column;
    }
}