/* =========================================================
   MÉTODO PBM™ — Diagnóstico Form Stylesheet
   ========================================================= */

.diag-header {
    padding: 9rem 0 4rem;
    background: linear-gradient(180deg, var(--black-deep) 0%, var(--black) 100%);
    text-align: center;
    border-bottom: 1px solid rgba(201, 169, 97, 0.1);
}

.diag-header-content {
    max-width: 800px;
    margin: 0 auto;
}

.diag-header h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1.25rem;
    color: var(--off-white);
    line-height: 1.15;
}

.diag-lead {
    font-size: 1.15rem;
    color: var(--gray-light);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.diag-lead strong { color: var(--off-white); }

.diag-stats {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    color: var(--gray-light);
    font-size: 0.9rem;
}

.diag-stats div i {
    color: var(--gold);
    margin-right: 0.4rem;
}

/* ============ FORM ============ */
.diag-section {
    padding: 4rem 0 6rem;
    background: var(--black);
}

.diag-form {
    max-width: 800px;
    margin: 0 auto;
    background: var(--black-card);
    padding: 3rem;
    border-radius: 4px;
    border: 1px solid rgba(201, 169, 97, 0.15);
    box-shadow: var(--shadow-deep);
    position: relative;
}

/* Progress Bar */
.progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.8rem;
}

.progress-fill {
    height: 100%;
    width: 12.5%;
    background: linear-gradient(90deg, var(--gold-dark), var(--gold), var(--gold-light));
    border-radius: 2px;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-text {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--gold);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 2.5rem;
    text-align: right;
    font-weight: 600;
}

/* Form Blocks */
.form-block {
    display: none;
    animation: fadeSlide 0.5s ease-out;
}

.form-block.active {
    display: block;
}

@keyframes fadeSlide {
    from { opacity: 0; transform: translateX(15px); }
    to { opacity: 1; transform: translateX(0); }
}

.block-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(201, 169, 97, 0.15);
    position: relative;
}

.block-num {
    display: inline-block;
    font-family: var(--font-serif);
    font-size: 1rem;
    color: var(--gold);
    font-weight: 700;
    letter-spacing: 0.3em;
    margin-bottom: 0.5rem;
}

.block-header h2 {
    font-size: 2rem;
    color: var(--off-white);
    margin-bottom: 0.5rem;
}

.block-header p {
    color: var(--gray-light);
    font-style: italic;
    font-size: 1rem;
}

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group label {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--off-white);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    background: var(--black-deep);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    color: var(--off-white);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.15);
    background: var(--black);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23C9A961' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
    font-family: var(--font-sans);
    line-height: 1.5;
}

/* Range Slider */
.form-group input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: linear-gradient(90deg, var(--gold-dark), var(--gold), var(--gold-light));
    border-radius: 3px;
    padding: 0;
    border: none;
    outline: none;
    cursor: pointer;
}

.form-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    background: var(--gold);
    border: 3px solid var(--black);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 0 2px var(--gold);
}

.form-group input[type="range"]::-moz-range-thumb {
    width: 22px;
    height: 22px;
    background: var(--gold);
    border: 3px solid var(--black);
    border-radius: 50%;
    cursor: pointer;
}

.range-value {
    text-align: center;
    margin-top: 0.8rem;
    color: var(--gold);
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

/* Checkboxes */
.checkbox-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.checkbox-item {
    display: flex !important;
    align-items: center;
    gap: 0.6rem;
    padding: 0.8rem 1rem;
    background: var(--black-deep);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem !important;
    margin-bottom: 0 !important;
}

.checkbox-item:hover {
    border-color: var(--gold);
    background: var(--black-card);
}

.checkbox-item input[type="checkbox"] {
    width: auto !important;
    margin: 0;
    accent-color: var(--gold);
    cursor: pointer;
}

.checkbox-item span {
    color: var(--off-white);
}

.checkbox-item input[type="checkbox"]:checked + span {
    color: var(--gold);
    font-weight: 600;
}

/* Form Navigation */
.form-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(201, 169, 97, 0.15);
    flex-wrap: wrap;
}

.form-nav .btn {
    flex-shrink: 0;
}

#submitBtn {
    margin-left: auto;
}

/* Trust Section */
.trust-section {
    max-width: 800px;
    margin: 3rem auto 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.trust-badge {
    text-align: center;
    padding: 1.5rem;
    background: var(--black-card);
    border: 1px solid rgba(201, 169, 97, 0.1);
    border-radius: 4px;
    transition: var(--transition);
}

.trust-badge:hover {
    border-color: var(--gold);
}

.trust-badge i {
    font-size: 1.8rem;
    color: var(--gold);
    margin-bottom: 0.6rem;
    display: block;
}

.trust-badge p {
    color: var(--gray-light);
    font-size: 0.85rem;
    line-height: 1.5;
    margin: 0;
}

.trust-badge strong {
    color: var(--off-white);
}

/* Validation */
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: #d44848;
    box-shadow: 0 0 0 3px rgba(212, 72, 72, 0.15);
}

.form-group .error-msg {
    display: none;
    color: #ff6b6b;
    font-size: 0.85rem;
    margin-top: 0.4rem;
}

.form-group.error .error-msg {
    display: block;
}

/* Responsive */
@media (max-width: 768px) {
    .diag-header {
        padding: 7rem 0 3rem;
    }

    .diag-form {
        padding: 2rem 1.5rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .checkbox-grid {
        grid-template-columns: 1fr;
    }

    .trust-section {
        grid-template-columns: 1fr;
    }

    .form-nav {
        flex-direction: column-reverse;
    }

    .form-nav .btn {
        width: 100%;
        justify-content: center;
    }

    .block-header h2 {
        font-size: 1.6rem;
    }

    .diag-stats {
        gap: 1rem;
        font-size: 0.85rem;
    }
}