/* ============================================
   SHUTTER QUOTE WIZARD - MAIN STYLES
   ============================================ */

:root {
    /* Brand Colours - EDIT THESE to white-label */
    --brand-primary: #2c3e50;
    --brand-accent: #c9a96e;
    --brand-accent-hover: #b8944f;
    --brand-dark: #1a252f;
    --brand-light: #f8f6f3;

    /* Neutrals */
    --text: #2d2d2d;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    --bg: #fdfcfa;
    --bg-card: #ffffff;
    --border: #e5e2dc;
    --border-hover: #c9a96e;
    --shadow: rgba(44, 62, 80, 0.08);
    --shadow-lg: rgba(44, 62, 80, 0.12);

    /* Spacing */
    --header-height: 64px;
    --max-width: 960px;
    --radius: 12px;
    --radius-sm: 8px;
}

/* ============ RESET & BASE ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============ HEADER ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--brand-dark);
    color: #fff;
    height: var(--header-height);
    border-bottom: 3px solid var(--brand-accent);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 2px;
}

.logo-icon {
    font-size: 1.6rem;
    color: var(--brand-accent);
}

.header-phone {
    font-size: 0.9rem;
    opacity: 0.85;
    color: #fff;
    text-decoration: none;
    transition: opacity 0.2s;
}

.header-phone:hover {
    opacity: 1;
}

/* ============ PROGRESS BAR ============ */
.progress-wrapper {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 12px;
    position: sticky;
    top: var(--header-height);
    z-index: 99;
}

.progress-bar {
    max-width: var(--max-width);
    margin: 0 auto 12px;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--brand-accent);
    border-radius: 2px;
    width: 16.66%;
    transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.progress-steps {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
}

.progress-step {
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.progress-step span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--border);
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 600;
    transition: all 0.3s;
}

.progress-step.active {
    color: var(--brand-primary);
}

.progress-step.active span {
    background: var(--brand-accent);
    color: #fff;
}

.progress-step.completed span {
    background: var(--brand-primary);
    color: #fff;
}

/* ============ WIZARD CONTAINER ============ */
.wizard-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 40px 24px 80px;
    flex: 1;
}

.wizard-step {
    display: none;
    animation: fadeSlideIn 0.4s ease-out;
}

.wizard-step.active {
    display: block;
}

@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============ STEP HEADERS ============ */
.step-header {
    text-align: center;
    margin-bottom: 36px;
}

.step-header h1 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2rem;
    font-weight: 600;
    color: var(--brand-primary);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.step-header p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* ============ OPTION CARDS (Style & Material) ============ */
.card-grid {
    display: grid;
    gap: 20px;
}

.style-grid {
    grid-template-columns: repeat(3, 1fr);
}

.material-grid {
    grid-template-columns: repeat(2, 1fr);
}

.option-card {
    position: relative;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 20px 20px;
    cursor: pointer;
    transition: all 0.25s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.option-card:hover {
    border-color: var(--brand-accent);
    box-shadow: 0 4px 20px var(--shadow);
    transform: translateY(-2px);
}

.option-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.option-card input[type="radio"]:checked ~ .card-check {
    opacity: 1;
    transform: scale(1);
}

.option-card:has(input:checked) {
    border-color: var(--brand-accent);
    background: linear-gradient(135deg, #fdf9f3, #fff);
    box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.15), 0 4px 20px var(--shadow);
}

.card-visual {
    width: 100%;
    max-width: 140px;
    margin-bottom: 16px;
}

.shutter-svg {
    width: 100%;
    height: auto;
    color: var(--brand-primary);
    transition: color 0.3s;
}

.option-card:hover .shutter-svg,
.option-card:has(input:checked) .shutter-svg {
    color: var(--brand-accent);
}

.card-label strong {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.card-label span {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.card-check {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    background: var(--brand-accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--brand-primary);
    color: #fff;
    font-size: 0.68rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-badge.popular {
    background: var(--brand-accent);
}

/* Material swatches */
.material-visual {
    max-width: 200px;
}

.material-swatch {
    width: 100%;
    height: 80px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0,0,0,0.06);
}

/* ============ COLOUR GRID ============ */
.colour-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.colour-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.colour-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.colour-swatch {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    transition: all 0.25s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.colour-option:hover .colour-swatch {
    transform: scale(1.15);
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}

.colour-option input:checked ~ .colour-swatch {
    outline: 3px solid var(--brand-accent);
    outline-offset: 3px;
    transform: scale(1.1);
}

.colour-option span {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: center;
    font-weight: 500;
}

.colour-custom {
    background: conic-gradient(
        #ff6b6b, #feca57, #48dbfb, #ff9ff3, #54a0ff, #ff6b6b
    ) !important;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none !important;
}

.colour-custom span {
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.custom-colour-input {
    max-width: 400px;
    margin: 0 auto 20px;
    animation: fadeSlideIn 0.3s ease;
}

.custom-colour-input label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
    font-size: 0.9rem;
}

.custom-colour-input input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.custom-colour-input input:focus {
    outline: none;
    border-color: var(--brand-accent);
}

/* ============ PHOTO UPLOAD ============ */
.photo-upload-area {
    max-width: 600px;
    margin: 0 auto;
}

.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 48px 24px;
    text-align: center;
    background: rgba(255,255,255,0.6);
    transition: all 0.3s;
}

.upload-zone.drag-over {
    border-color: var(--brand-accent);
    background: rgba(201, 169, 110, 0.05);
}

.upload-icon {
    color: var(--brand-accent);
    margin-bottom: 16px;
}

.upload-zone h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.upload-zone > p {
    color: var(--text-muted);
    margin: 8px 0;
    font-size: 0.9rem;
}

.upload-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin: 16px 0;
}

.btn-upload, .btn-camera {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid var(--border);
    background: #fff;
    color: var(--text);
}

.btn-upload:hover, .btn-camera:hover {
    border-color: var(--brand-accent);
    color: var(--brand-accent);
}

.upload-hint {
    font-size: 0.78rem;
    color: var(--text-light);
}

.upload-preview {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    border: 2px solid var(--brand-accent);
}

.upload-preview img {
    width: 100%;
    height: auto;
    display: block;
    max-height: 400px;
    object-fit: contain;
    background: #f5f5f5;
}

.btn-remove-photo {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    border: none;
    padding: 6px 14px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.2s;
}

.btn-remove-photo:hover {
    background: rgba(200,50,50,0.9);
}

/* ============ PREVIEW ============ */
.preview-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    align-items: start;
}

.preview-canvas {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    background: #f0ede8;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-sidebar {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.preview-controls {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
}

.preview-controls label {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text);
}

.preview-controls input[type="range"] {
    width: 100%;
    accent-color: var(--brand-accent);
}

.preview-summary {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.preview-summary h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.2rem;
    margin-bottom: 16px;
    color: var(--brand-primary);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-item span {
    color: var(--text-muted);
}

/* Before/After AI Preview */
.before-after-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.ba-panel {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    background: #f0ede8;
    box-shadow: 0 2px 12px var(--shadow);
}

.ba-panel img {
    width: 100%;
    height: auto;
    display: block;
}

.ba-label {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255,255,255,0.9);
    color: var(--text);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    padding: 4px 16px;
    border-radius: 20px;
    z-index: 2;
}

.ba-ai-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 20px;
    z-index: 2;
}

.ai-preview-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
}

.ai-summary-bar {
    display: flex;
    justify-content: center;
    gap: 32px;
    padding: 16px 24px;
    margin: 16px 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.ai-summary-bar .summary-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    border: none;
    padding: 0;
}

.ai-summary-bar .summary-item span {
    color: var(--text-muted);
}

/* AI Badge */
.ai-badge {
    background: linear-gradient(135deg, #e8f5e9, #f1f8e9);
    border: 1px solid #c8e6c9;
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    font-size: 0.82rem;
    font-weight: 500;
    color: #2e7d32;
    text-align: center;
}

/* AI Loader */
.ai-loader {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 24px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #f3e8ff, #e8f0ff);
    border: 1px solid #d1c4e9;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    color: #5e35b1;
}

.ai-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(94, 53, 177, 0.2);
    border-top-color: #5e35b1;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Interactive Preview */
.interactive-preview {
    position: relative;
    display: inline-block;
    width: 100%;
    user-select: none;
    -webkit-user-select: none;
}

.interactive-preview img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius);
    pointer-events: none;
}

.shutter-overlay-interactive {
    position: absolute;
    cursor: grab;
    border: 2px dashed rgba(201, 169, 110, 0.6);
    border-radius: 4px;
    transition: border-color 0.2s;
    overflow: hidden;
    touch-action: none;
}

.shutter-overlay-interactive:hover {
    border-color: var(--brand-accent);
}

.shutter-overlay-interactive:active {
    cursor: grabbing;
    border-color: var(--brand-accent);
    border-style: solid;
}

/* Toggle button */
.btn-toggle {
    display: block;
    width: 100%;
    padding: 10px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 8px;
    color: var(--text);
}

.btn-toggle:hover {
    border-color: var(--brand-accent);
    color: var(--brand-accent);
}

.preview-hint {
    font-size: 0.78rem;
    color: var(--text-light);
    text-align: center;
    margin-top: 8px;
    line-height: 1.4;
}

/* ============ CONTACT FORM ============ */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    display: block;
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    background: #fff;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--brand-accent);
}

.form-group input.error,
.form-group textarea.error {
    border-color: #e74c3c;
}

.consent-group {
    margin-top: 8px;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-muted);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 3px;
    accent-color: var(--brand-accent);
}

.checkbox-label a {
    color: var(--brand-accent);
}

/* ============ BUTTONS ============ */
.step-nav {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s;
    text-decoration: none;
}

.btn-next, .btn-submit {
    background: var(--brand-accent);
    color: #fff;
    min-width: 180px;
}

.btn-next:hover, .btn-submit:hover {
    background: var(--brand-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(201, 169, 110, 0.3);
}

.btn-back {
    background: transparent;
    color: var(--text-muted);
    border: 2px solid var(--border);
}

.btn-back:hover {
    border-color: var(--text-muted);
    color: var(--text);
}

.btn-skip {
    background: transparent;
    color: var(--brand-accent);
    border: 2px solid var(--brand-accent);
}

.btn-skip:hover {
    background: var(--brand-accent);
    color: #fff;
}

.btn-submit {
    min-width: 220px;
    font-size: 1.1rem;
    padding: 16px 40px;
    background: var(--brand-primary);
}

.btn-submit:hover {
    background: var(--brand-dark);
    box-shadow: 0 4px 20px rgba(44, 62, 80, 0.3);
}

/* ============ SUCCESS ============ */
.success-message {
    text-align: center;
    padding: 60px 20px;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: #27ae60;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 24px;
    animation: popIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

.success-message h1 {
    font-family: 'Playfair Display', serif;
    color: var(--brand-primary);
    margin-bottom: 12px;
}

.success-message p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 24px;
}

.success-ref {
    background: var(--brand-light);
    display: inline-block;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    margin-bottom: 32px;
}

/* ============ FOOTER ============ */
.site-footer {
    background: var(--brand-dark);
    color: rgba(255,255,255,0.6);
    padding: 24px;
    margin-top: auto;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: rgba(255,255,255,0.5);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--brand-accent);
}

/* ============ WINDOW MEASUREMENTS ============ */
.windows-section {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 2px solid var(--border);
}

.windows-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.windows-header h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.2rem;
    color: var(--brand-primary);
}

.unit-toggle {
    display: flex;
    background: var(--border);
    border-radius: var(--radius-sm);
    padding: 3px;
}

.unit-btn {
    padding: 5px 14px;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 6px;
    color: var(--text-muted);
    transition: all 0.2s;
}

.unit-btn.active {
    background: #fff;
    color: var(--text);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.windows-info {
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 0.85rem;
    color: #92400e;
    margin-bottom: 16px;
}

.windows-info p { margin: 0; }

.window-entry {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 12px;
    position: relative;
    animation: fadeSlideIn 0.3s ease;
}

.window-entry-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.window-name-input {
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    padding: 0;
    width: 160px;
}

.window-name-input:focus {
    outline: none;
    border-bottom: 2px solid var(--brand-accent);
}

.window-measurements {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.measurement-field label {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.measurement-field input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    background: #fff;
    transition: border-color 0.2s;
}

.measurement-field input:focus {
    outline: none;
    border-color: var(--brand-accent);
}

.btn-remove-window {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid #e0e0e0;
    background: #fff;
    color: #999;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.btn-remove-window:hover {
    background: #fee2e2;
    color: #dc2626;
    border-color: #fca5a5;
}

.btn-add-window {
    width: 100%;
    padding: 14px;
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    background: transparent;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-add-window:hover {
    border-color: var(--brand-accent);
    color: var(--brand-accent);
    background: rgba(201, 169, 110, 0.03);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .style-grid { grid-template-columns: repeat(2, 1fr); }
    .material-grid { grid-template-columns: 1fr; }
    .colour-grid { grid-template-columns: repeat(4, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .preview-container { grid-template-columns: 1fr; }
    .before-after-container { grid-template-columns: 1fr; }
    .ai-summary-bar { flex-direction: column; gap: 8px; align-items: flex-start; }
    .step-header h1 { font-size: 1.5rem; }
    .progress-step { font-size: 0.65rem; }
}

@media (max-width: 480px) {
    .style-grid { grid-template-columns: 1fr 1fr; }
    .colour-grid { grid-template-columns: repeat(3, 1fr); }
    .upload-buttons { flex-direction: column; align-items: center; }
    .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}