.comprobante-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.comprobante-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.comprobante-container {
    max-width: 500px;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 3rem 2.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
}

.comprobante-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.comprobante-logo {
    max-width: 200px;
    height: auto;
    margin-bottom: 1.5rem;
}

.comprobante-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 0.5rem;
    font-family: 'Poppins', sans-serif;
}

.comprobante-subtitle {
    font-size: 1rem;
    color: #718096;
    font-family: 'Inter', sans-serif;
}

.comprobante-form {
    margin-top: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.5rem;
    font-family: 'Inter', sans-serif;
}

.form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-input::placeholder {
    color: #a0aec0;
}

.btn-download {
    width: 100%;
    padding: 1.125rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-download:active {
    transform: translateY(0);
}

.btn-download:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-download svg {
    width: 24px;
    height: 24px;
}

.alert {
    padding: 1rem 1.25rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    display: none;
}

.alert.show {
    display: block;
    animation: slideDown 0.3s ease;
}

.alert-error {
    background: #fed7d7;
    color: #c53030;
    border: 1px solid #fc8181;
}

.alert-success {
    background: #c6f6d5;
    color: #2f855a;
    border: 1px solid #9ae6b4;
}

.alert-info {
    background: #bee3f8;
    color: #2c5282;
    border: 1px solid #90cdf4;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.loading-spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.back-link {
    text-align: center;
    margin-top: 2rem;
}

.back-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.back-link a:hover {
    color: #764ba2;
    gap: 0.75rem;
}

.info-box {
    background: #f7fafc;
    border-left: 4px solid #667eea;
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.info-box p {
    margin: 0;
    font-size: 0.9rem;
    color: #4a5568;
    font-family: 'Inter', sans-serif;
}

/* PDF Selection */
.pdf-selection {
    display: none;
    margin-top: 2rem;
}

.pdf-selection.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pdf-cards {
    display: grid;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.pdf-card {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.pdf-card:hover {
    border-color: #667eea;
    background: #f7fafc;
    transform: translateX(5px);
}

.pdf-card.selected {
    border-color: #667eea;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.pdf-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.pdf-info {
    flex: 1;
}

.pdf-month {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 0.25rem;
}

.pdf-size {
    font-size: 0.875rem;
    color: #718096;
}

.pdf-check {
    width: 24px;
    height: 24px;
    border: 2px solid #cbd5e0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.pdf-card.selected .pdf-check {
    background: #667eea;
    border-color: #667eea;
}

.pdf-check svg {
    width: 16px;
    height: 16px;
    color: white;
    display: none;
}

.pdf-card.selected .pdf-check svg {
    display: block;
}

.btn-download-selected {
    width: 100%;
    padding: 1.125rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-download-selected:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-download-selected:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-back {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: #667eea;
    background: white;
    border: 2px solid #667eea;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
    margin-top: 1rem;
}

.btn-back:hover {
    background: #667eea;
    color: white;
}

@media (max-width: 640px) {
    .comprobante-container {
        padding: 2rem 1.5rem;
    }

    .comprobante-title {
        font-size: 1.5rem;
    }

    .comprobante-subtitle {
        font-size: 0.9rem;
    }

    .pdf-card {
        flex-direction: column;
        text-align: center;
    }

    .pdf-icon {
        margin: 0 auto;
    }
}