.builder-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
    background-color: #f4f5f8;
    color: var(--text-primary);
    overflow: hidden;
    position: relative;
}

/* Stepper Navigation di bagian atas */
.builder-stepper {
    background-color: #ffffff;
    height: 100px;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 40px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 50;
}

.stepper-steps-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
}

.stepper-step {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}

.step-icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background-color: #ffffff;
    border: 2px solid #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.step-icon-circle img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.step-info-text {
    display: flex;
    flex-direction: column;
}

.step-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.step-name {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 700;
}

.stepper-line {
    flex: 1;
    height: 2px;
    background-color: #e2e8f0;
    margin: 0 25px;
    max-width: 120px;
    transition: var(--transition-smooth);
}

.stepper-line.completed {
    background-color: var(--ariston-red);
}

/* Status Stepper */
.stepper-step.active .step-icon-circle {
    background-color: var(--ariston-red);
    border-color: var(--ariston-red);
    box-shadow: 0 4px 12px rgba(200, 16, 46, 0.25);
}

.stepper-step.active .step-name {
    color: var(--text-primary);
}

.stepper-step.completed .step-icon-circle {
    background-color: #fdf0f2;
    border-color: #fdf0f2;
}

.stepper-step.completed .step-name {
    color: var(--text-secondary);
}

.stepper-step.disabled .step-icon-circle {
    background-color: #f8fafc;
    border-color: #e2e8f0;
    opacity: 0.6;
}

.stepper-step.disabled .step-name {
    color: var(--text-muted);
}

/* Konten Utama Builder */
.builder-content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 40px 80px 30px 80px;
    box-sizing: border-box;
    overflow-y: auto;
}

.builder-header {
    text-align: center;
    margin-bottom: 30px;
    animation: fadeIn 0.4s ease;
}

.builder-title {
    font-size: 40px;
    font-weight: 900; /* Tipografi ultra bold tegas */
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.builder-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Grid Kartu Seleksi */
.builder-grid {
    display: flex;
    justify-content: center;
    gap: 25px;
    width: 100%;
    max-width: 1300px;
    margin-bottom: 30px;
}

.builder-card {
    flex: 1 1 0px; /* Menjamin lebar kartu sama rata 25% di flex container, mengabaikan panjang konten teks */
    background-color: #ffffff;
    border-radius: var(--radius-lg); /* Sudut melengkung premium 28px */
    padding: 35px 30px;
    box-shadow: var(--shadow-premium);
    border: 1px solid rgba(11, 26, 48, 0.05); /* Border tipis super halus */
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 380px;
    transition: var(--transition-smooth);
    position: relative;
    box-sizing: border-box;
}

.builder-card-icon-wrapper {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background-color: var(--ariston-red-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.builder-card-icon-wrapper img {
    width: 26px;
    height: 26px;
    object-fit: contain;
}

.builder-card-text {
    margin-top: auto;
}

.builder-card-value {
    font-size: 52px;
    font-weight: 900; /* Teks nilai sangat tegas */
    color: var(--text-primary);
    line-height: 1.05;
}

.builder-card-unit {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 700;
    margin-top: 6px;
}

/* Status Kartu Terpilih & Focused */
.builder-card:hover, .builder-card.focused {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(11, 26, 48, 0.06);
    border-color: #cbd5e1;
}

.builder-card.selected {
    border-color: var(--ariston-red) !important;
    background-color: #ffffff;
    box-shadow: 0 15px 35px rgba(193, 18, 42, 0.08);
}

/* Step 4: Kartu Style Kamar Mandi (Gambar) */
.builder-card.style-card {
    padding: 0 !important; /* Meniadakan padding agar gambar style memenuhi kartu secara penuh */
    overflow: hidden !important; /* Memotong sudut gambar agar sesuai dengan border-radius kartu */
    min-height: 380px;
    background-color: #ffffff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.style-card-image {
    width: 100%;
    height: 70%;
    background-size: cover;
    background-position: center;
    transition: var(--transition-smooth);
}

.style-card-info {
    height: 30%;
    padding: 20px;
    display: flex;
    align-items: center;
    background-color: #ffffff;
    transition: var(--transition-smooth);
}

.style-card-title {
    font-size: 24px;
    font-weight: 700;
    color: #2d3748;
    transition: var(--transition-smooth);
}

/* Style selected state */
.builder-card.style-card.selected .style-card-info {
    background-color: var(--ariston-red);
}

.builder-card.style-card.selected .style-card-title {
    color: #ffffff;
}

/* Footer Navigasi Builder */
.builder-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1300px;
    margin-top: auto;
}

.footer-left-buttons {
    display: flex;
    gap: 15px;
}

.btn-secondary {
    background-color: #ffffff;
    border: 2px solid #e2e8f0;
    color: var(--text-primary);
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 30px; /* Gaya kapsul bulat premium */
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition-smooth);
}

.btn-secondary img {
    width: 18px;
    height: 18px;
}

.btn-secondary:hover, .btn-secondary.focused {
    background-color: #f8fafc;
    border-color: #cbd5e1;
    transform: translateY(-2px);
}

.btn-primary.builder-next-btn {
    border-radius: 30px; /* Gaya kapsul bulat premium */
    padding: 14px 48px;
    font-size: 16px;
    font-weight: 700;
    box-shadow: 0 6px 20px rgba(200, 16, 46, 0.15);
}

/* Tampilan Hasil (Langkah 5) */
.builder-result-layout {
    display: flex;
    gap: 40px;
    width: 100%;
    max-width: 1300px;
    flex: 1;
    margin-bottom: 20px;
}

.result-left-preview {
    flex: 1.2;
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    background-size: cover;
    background-position: center;
    background-color: #e2e8f0;
    display: flex;
    align-items: flex-end;
    padding: 30px;
}

/* Floating product recommendation card */
.product-rec-card {
    background-color: #ffffff;
    border-radius: 16px;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    width: 100%;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    animation: fadeIn 0.6s ease;
}

.product-rec-image {
    width: 70px;
    height: 70px;
    object-fit: contain;
    border-radius: 8px;
    background-color: #f7f9fa;
    padding: 5px;
}

.product-rec-details {
    flex: 1;
}

.product-rec-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.product-rec-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 2px;
}

.product-rec-card .btn-primary {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 700;
    border-radius: 8px;
    box-shadow: none;
}

/* Detail panel sebelah kanan */
.result-right-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
    justify-content: center;
}

.result-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
}

.result-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.result-summary-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.summary-pill {
    background-color: #ffffff;
    border-radius: var(--radius-md); /* Sudut melengkung premium 20px */
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: var(--shadow-premium);
    border: 1px solid rgba(11, 26, 48, 0.04);
}

.summary-pill-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--ariston-red-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.summary-pill-icon img {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

.summary-pill-content {
    display: flex;
    flex-direction: column;
}

.summary-pill-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

.summary-pill-value {
    font-size: 16px;
    font-weight: 800; /* Teks nilai tegas */
    color: var(--text-primary);
    margin-top: 2px;
}

/* Download button */
.btn-download-design {
    background-color: #ffffff;
    color: var(--ariston-red);
    border: 2px solid var(--ariston-red); /* Border tegas 2px */
    padding: 16px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 30px; /* Gaya tombol kapsul modern */
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: var(--transition-smooth);
    width: 100%;
    margin-top: 10px;
}

.btn-download-design img {
    width: 20px;
    height: 20px;
}

.btn-download-design:hover, .btn-download-design.focused {
    background-color: var(--ariston-red);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(200, 16, 46, 0.15);
}
.btn-download-design:active {
    background-color: var(--ariston-red-light);
}

/* Modal QR Code */
.qr-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 16, 21, 0.85);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.qr-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.qr-modal-content {
    background-color: #ffffff;
    border-radius: 24px;
    padding: 40px;
    max-width: 450px;
    width: 90%;
    text-align: center;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    transform: scale(0.9);
    transition: var(--transition-smooth);
    position: relative;
}

.qr-modal-overlay.active .qr-modal-content {
    transform: scale(1);
}

.qr-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    font-size: 24px;
    font-weight: bold;
    color: #a0aec0;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.qr-modal-close:hover, .qr-modal-close.focused {
    background-color: #f7fafc;
    color: #2d3748;
}

.qr-modal-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.qr-modal-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.5;
}

.qr-code-placeholder {
    width: 220px;
    height: 220px;
    margin: 0 auto 25px auto;
    border-radius: 12px;
    padding: 10px;
    border: 1px solid #edf2f7;
    background-color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-code-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Spinner untuk Loading State */
.loading-spinner-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 6px solid rgba(200, 16, 46, 0.1);
    border-top-color: var(--ariston-red);
    border-radius: 50%;
    animation: spin 1s infinite linear;
    margin-bottom: 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Loading overlay untuk proses generate */
.builder-loading-overlay {
    position: absolute;
    top: 100px; /* di bawah stepper */
    left: 0;
    width: 100%;
    height: calc(100% - 100px);
    background-color: rgba(244, 245, 248, 0.95);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.builder-loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Container Visual Ganda (3D Render & Denah) */
.result-visual-container {
    flex: 1.2;
    display: flex;
    flex-direction: column;
    gap: 15px;
    height: 100%;
}

.result-visual-tabs {
    display: flex;
    gap: 10px;
}

.visual-tab-btn {
    background-color: #ffffff;
    border: 1.5px solid #e2e8f0;
    color: var(--text-secondary);
    padding: 10px 24px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.visual-tab-btn.active, .visual-tab-btn.focused {
    background-color: var(--ariston-red);
    border-color: var(--ariston-red);
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(200, 16, 46, 0.15);
}

/* Modifikasi agar tinggi preview menyesuaikan dengan adanya tab */
.builder-result-layout .result-left-preview {
    flex: 1;
    height: 100%;
    min-height: 400px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    background-size: contain; /* Agar denah 2D tidak terpotong */
    background-repeat: no-repeat;
    background-position: center;
    background-color: #ffffff;
    display: flex;
    align-items: flex-end;
    padding: 20px;
    border: 1px solid #edf2f7;
    transition: background-image 0.3s ease;
}

/* Kotak Rekomendasi RAG */
.rag-recommendation-box {
    background-color: #ffffff;
    border-radius: 20px;
    padding: 22px 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    border-left: 5px solid var(--ariston-red);
    border-top: 1px solid #edf2f7;
    border-right: 1px solid #edf2f7;
    border-bottom: 1px solid #edf2f7;
    animation: fadeIn 0.5s ease;
}

.rag-box-title {
    font-size: 18px;
    font-weight: 800;
    color: #2d3748;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.rag-explanation-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}