/* ==========================================================================
   KonfigSuite Configurator — Crystal Theme v2.0
   Premium glass configurator with glassmorphism & luxury feel
   ========================================================================== */

.konfigsuite-configurator {
    --gc-primary: #2563eb;
    --gc-primary-hover: #1d4ed8;
    --gc-primary-light: rgba(37, 99, 235, 0.07);
    --gc-primary-ring: rgba(37, 99, 235, 0.2);
    --gc-primary-glow: rgba(37, 99, 235, 0.35);
    --gc-bg: #ffffff;
    --gc-bg-subtle: #f8fafc;
    --gc-bg-muted: #f1f5f9;
    --gc-bg-glass: rgba(255, 255, 255, 0.7);
    --gc-border: #e2e8f0;
    --gc-border-strong: #cbd5e1;
    --gc-text: #0f172a;
    --gc-text-secondary: #334155;
    --gc-text-muted: #64748b;
    --gc-text-faint: #94a3b8;
    --gc-success: #16a34a;
    --gc-success-bg: #dcfce7;
    --gc-error: #dc2626;
    --gc-error-bg: #fef2f2;
    --gc-radius: 16px;
    --gc-radius-sm: 10px;
    --gc-radius-xs: 6px;
    --gc-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --gc-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
    --gc-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.04);
    --gc-shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.04);
    --gc-shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
    --gc-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--gc-text);
    max-width: 1120px;
    margin: 0 auto;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding: 8px;
    padding-bottom: 100px;
}

.konfigsuite-configurator *,
.konfigsuite-configurator *::before,
.konfigsuite-configurator *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ==========================================================================
   Progress Bar — Glass Pill
   ========================================================================== */

.gc-progress {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    margin-bottom: 44px;
    padding: 14px 24px;
    list-style: none;
    background: rgba(241, 245, 249, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 60px;
    border: 1px solid var(--gc-border);
    box-shadow: var(--gc-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.gc-progress-step {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--gc-text-faint);
    position: relative;
    transition: color 0.4s ease;
}

.gc-progress-connector {
    width: 56px;
    height: 3px;
    background: var(--gc-border);
    margin: 0 8px;
    border-radius: 2px;
    transition: background var(--gc-transition);
    position: relative;
    overflow: hidden;
}

.gc-progress-connector::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--gc-primary), #60a5fa);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
}

.gc-progress-connector.filled::after {
    width: 100%;
}

.gc-progress-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    background: var(--gc-bg);
    border: 2.5px solid var(--gc-border);
    flex-shrink: 0;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.gc-progress-step.active .gc-progress-number {
    background: linear-gradient(135deg, var(--gc-primary), #3b82f6);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 0 0 5px var(--gc-primary-ring), 0 4px 14px var(--gc-primary-glow);
    transform: scale(1.1);
}

.gc-progress-step.completed .gc-progress-number {
    background: linear-gradient(135deg, var(--gc-primary), #3b82f6);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.gc-progress-step.active {
    color: var(--gc-text);
}

.gc-progress-step.completed {
    color: var(--gc-text-secondary);
}

.gc-progress-label {
    display: none;
    font-weight: 600;
    letter-spacing: -0.01em;
}

@media (min-width: 640px) {
    .gc-progress-label {
        display: inline;
    }
    .gc-progress-connector {
        width: 56px;
    }
}

/* ==========================================================================
   Step Container
   ========================================================================== */

.gc-step {
    display: none;
}

.gc-step.active {
    display: block;
    animation: gcSlideIn 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

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

@keyframes gcSlideOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-12px);
    }
}

.gc-step.gc-step-exit {
    animation: gcSlideOut 0.18s ease forwards;
}

.gc-step-title {
    font-size: 28px;
    font-weight: 800;
    margin: 0 0 8px;
    color: var(--gc-text);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.gc-step-subtitle {
    font-size: 16px;
    color: var(--gc-text-muted);
    margin: 0 0 32px;
    line-height: 1.6;
}

/* ==========================================================================
   Layout / Product Cards — Premium Glass Cards
   ========================================================================== */

.gc-layouts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (min-width: 640px) {
    .gc-layouts {
        grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
        gap: 18px;
    }
}

.gc-layout-card {
    background: var(--gc-bg);
    border: 2px solid var(--gc-border);
    border-radius: var(--gc-radius);
    padding: 32px 20px 26px;
    cursor: pointer;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    position: relative;
    overflow: hidden;
}

.gc-layout-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--gc-primary), #60a5fa, #a78bfa);
    transform: scaleX(0);
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    transform-origin: left;
}

.gc-layout-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.gc-layout-card:hover {
    border-color: rgba(37, 99, 235, 0.4);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.12), 0 2px 8px rgba(0, 0, 0, 0.04);
    transform: translateY(-4px);
}

.gc-layout-card:hover::before {
    transform: scaleX(1);
}

.gc-layout-card:hover::after {
    opacity: 1;
}

.gc-layout-card.selected {
    border-color: var(--gc-primary);
    background: linear-gradient(165deg, rgba(37, 99, 235, 0.04) 0%, rgba(96, 165, 250, 0.06) 100%);
    box-shadow: 0 0 0 3px var(--gc-primary-ring), 0 8px 30px rgba(37, 99, 235, 0.15);
}

.gc-layout-card.selected::before {
    transform: scaleX(1);
}

.gc-layout-card.selected::after {
    opacity: 1;
}

.gc-layout-card svg {
    width: 96px;
    height: 96px;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.gc-layout-card:hover svg {
    transform: scale(1.08);
}

.gc-layout-card-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--gc-text);
    letter-spacing: -0.01em;
}

.gc-layout-card-desc {
    font-size: 12.5px;
    color: var(--gc-text-muted);
    line-height: 1.4;
}

/* ==========================================================================
   Main Content Area — Preview + Controls
   ========================================================================== */

.gc-main {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

@media (min-width: 768px) {
    .gc-main {
        flex-direction: row;
        align-items: flex-start;
    }
}

/* Preview Panel — Light Showroom */
.gc-preview {
    flex: 1.1;
    background: linear-gradient(160deg, #f0f4f8 0%, #e8edf4 40%, #f5f7fa 100%);
    border: 1.5px solid var(--gc-border);
    border-radius: 20px;
    padding: 32px;
    min-height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: var(--gc-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    overflow: hidden;
}

@media (min-width: 768px) {
    .gc-preview {
        position: sticky;
        top: 24px;
        align-self: flex-start;
    }
}

.gc-preview::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 20%, rgba(37, 99, 235, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(148, 163, 184, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.gc-preview svg {
    width: 100%;
    max-width: 440px;
    height: auto;
    filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.08));
}

/* 2D/3D Toggle */
.gc-view-toggle {
    position: absolute;
    top: 14px;
    right: 14px;
    display: flex;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--gc-shadow-md);
    z-index: 2;
    border: 1.5px solid var(--gc-border);
}

.gc-view-toggle button {
    padding: 8px 16px;
    border: none;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    color: var(--gc-text-muted);
    font-family: inherit;
    letter-spacing: 0.05em;
    transition: all var(--gc-transition);
    line-height: 1;
    text-transform: uppercase;
}

.gc-view-toggle button:first-child {
    border-right: 1px solid var(--gc-border);
}

.gc-view-toggle button:hover {
    background: var(--gc-bg-muted);
    color: var(--gc-text);
}

.gc-view-toggle button.active {
    background: var(--gc-primary);
    color: #fff;
}

/* 2D container */
.gc-preview-2d {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 3D container */
.gc-preview-3d {
    width: 100%;
    min-height: 480px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.gc-preview-3d canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
    border-radius: 12px;
}

/* Controls Panel */
.gc-controls {
    flex: 1.1;
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-width: 0;
}

/* Each option group as a card */
.gc-controls > .gc-field {
    background: var(--gc-bg);
    border: 1.5px solid var(--gc-border);
    border-radius: 14px;
    padding: 20px;
    gap: 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.gc-controls > .gc-field:hover {
    border-color: var(--gc-border-strong);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.gc-controls > .gc-field > .gc-field-label {
    font-size: 12px;
    font-weight: 800;
    color: var(--gc-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding-bottom: 4px;
    border-bottom: 2px solid var(--gc-bg-muted);
    margin-bottom: 2px;
}

/* Toggle card style */
.gc-controls > .gc-field:has(.gc-toggle) {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 18px 20px;
    background: linear-gradient(135deg, var(--gc-bg-subtle), var(--gc-bg));
}

.gc-controls > .gc-field:has(.gc-toggle) .gc-toggle {
    width: 100%;
}

/* ==========================================================================
   Form Elements
   ========================================================================== */

.gc-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.gc-field-label {
    font-size: 11.5px;
    font-weight: 700;
    color: var(--gc-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.gc-field input[type="number"],
.gc-field input[type="text"],
.gc-field input[type="email"],
.gc-field input[type="tel"],
.gc-field select,
.gc-field textarea {
    padding: 13px 16px;
    border: 2px solid var(--gc-border);
    border-radius: 12px;
    font-size: 15px;
    color: var(--gc-text);
    background: var(--gc-bg);
    transition: all var(--gc-transition);
    width: 100%;
    font-family: inherit;
    line-height: 1.5;
}

.gc-field input:hover,
.gc-field textarea:hover,
.gc-field select:hover {
    border-color: var(--gc-border-strong);
}

.gc-field input:focus,
.gc-field textarea:focus,
.gc-field select:focus {
    outline: none;
    border-color: var(--gc-primary);
    box-shadow: 0 0 0 4px var(--gc-primary-ring);
}

.gc-field textarea {
    resize: vertical;
    min-height: 100px;
}

.gc-field-error {
    font-size: 13px;
    color: var(--gc-error);
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
}

.gc-field.has-error input,
.gc-field.has-error textarea {
    border-color: var(--gc-error);
    background: var(--gc-error-bg);
}

.gc-field.has-error input:focus,
.gc-field.has-error textarea:focus {
    box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.12);
}

/* Dimension group with unit */
.gc-dimension-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.gc-dimension-group input {
    flex: 1;
}

.gc-dimension-unit {
    font-size: 13px;
    font-weight: 600;
    color: var(--gc-text-muted);
    white-space: nowrap;
    min-width: 28px;
}

/* Slider + number combo */
.gc-dimension-slider {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.gc-dimension-slider input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: #e2e8f0;
    outline: none;
    border: none;
    padding: 0;
}

.gc-dimension-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gc-primary), #3b82f6);
    cursor: pointer;
    border: 3px solid #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3), 0 0 0 0px var(--gc-primary-ring);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.gc-dimension-slider input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3), 0 0 0 6px var(--gc-primary-ring);
}

.gc-dimension-slider input[type="range"]:active::-webkit-slider-thumb {
    transform: scale(1.2);
    box-shadow: 0 2px 12px rgba(37, 99, 235, 0.4), 0 0 0 8px var(--gc-primary-ring);
}

.gc-dimension-slider input[type="range"]::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gc-primary), #3b82f6);
    cursor: pointer;
    border: 3px solid #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.gc-dimension-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.gc-dimension-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--gc-text);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.01em;
}

/* ==========================================================================
   Option Buttons — Premium Selection Chips
   ========================================================================== */

.gc-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.gc-option {
    padding: 12px 14px;
    border: 2px solid var(--gc-border);
    border-radius: 12px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.22, 1, 0.36, 1);
    background: var(--gc-bg-subtle);
    color: var(--gc-text-secondary);
    font-weight: 600;
    white-space: nowrap;
    overflow: visible;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    user-select: none;
    position: relative;
}

.gc-option:hover {
    border-color: rgba(37, 99, 235, 0.4);
    background: rgba(37, 99, 235, 0.03);
    color: var(--gc-text);
    box-shadow: 0 2px 12px rgba(37, 99, 235, 0.08);
    transform: translateY(-1px);
}

.gc-option.selected {
    border-color: var(--gc-primary);
    background: linear-gradient(135deg, var(--gc-primary), #3b82f6);
    color: #fff;
    box-shadow: 0 4px 16px var(--gc-primary-glow);
    transform: translateY(-1px);
}

/* Hardware color swatches — Premium 3D */
.gc-swatch {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2.5px solid rgba(0, 0, 0, 0.08);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15), 0 1px 3px rgba(0, 0, 0, 0.08);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.gc-swatch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 5px;
    width: 10px;
    height: 5px;
    background: rgba(255, 255, 255, 0.45);
    border-radius: 50%;
    transform: rotate(-30deg);
}

.gc-swatch-chrome         { background: linear-gradient(150deg, #d8dee6, #f0f2f5, #b8c0cc); }
.gc-swatch-matte_black    { background: linear-gradient(150deg, #1a1a1a, #3d3d3d, #1a1a1a); }
.gc-swatch-brushed_nickel { background: linear-gradient(150deg, #a89e90, #d4cdc4, #b0a898); }
.gc-swatch-brass          { background: linear-gradient(150deg, #a67c10, #daa520, #c5960c); }
.gc-swatch-polished_chrome { background: linear-gradient(150deg, #c8cdd5, #f5f7fa, #d0d5dd); }
.gc-swatch-matte_chrome    { background: linear-gradient(150deg, #7e8590, #b0b5bd, #8b929c); }
.gc-swatch-stainless_steel { background: linear-gradient(150deg, #8e95a0, #c8ced6, #9ca3af); }
.gc-swatch-gold            { background: linear-gradient(150deg, #b8860b, #ffd700, #daa520); }
.gc-swatch-gloss_black     { background: linear-gradient(150deg, #000, #444, #111); }

.gc-option.selected .gc-swatch {
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15), 0 0 8px rgba(255, 255, 255, 0.2);
}

/* Glass type mini previews — Larger */
.gc-glass-preview {
    width: 28px;
    height: 28px;
    border-radius: 7px;
    flex-shrink: 0;
    border: 2px solid rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
}

.gc-glass-preview::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    width: 12px;
    height: 200%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
    transform: rotate(25deg);
}

.gc-glass-clear         { background: linear-gradient(150deg, rgba(96, 165, 250, 0.12), rgba(147, 197, 253, 0.28)); }
.gc-glass-frosted       { background: linear-gradient(150deg, rgba(148, 163, 184, 0.35), rgba(203, 213, 225, 0.55)); }
.gc-glass-tinted_grey   { background: linear-gradient(150deg, rgba(100, 116, 139, 0.35), rgba(100, 116, 139, 0.55)); }
.gc-glass-tinted_bronze { background: linear-gradient(150deg, rgba(180, 140, 80, 0.3), rgba(180, 140, 80, 0.5)); }
.gc-glass-printed       { background: linear-gradient(150deg, rgba(129, 140, 248, 0.2), rgba(129, 140, 248, 0.4)); }

.gc-option.selected .gc-glass-preview {
    border-color: rgba(255, 255, 255, 0.35);
}

/* ==========================================================================
   Toggle Switch — Refined
   ========================================================================== */

.gc-toggle {
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--gc-text-secondary);
    user-select: none;
    padding: 8px 0;
}

.gc-toggle-track {
    width: 50px;
    height: 28px;
    border-radius: 14px;
    background: var(--gc-border-strong);
    position: relative;
    transition: background 0.3s ease, box-shadow 0.3s ease;
    flex-shrink: 0;
}

.gc-toggle-track.active {
    background: linear-gradient(135deg, var(--gc-primary), #3b82f6);
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
}

.gc-toggle-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    position: absolute;
    top: 3px;
    left: 3px;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.gc-toggle-track.active .gc-toggle-thumb {
    transform: translateX(22px);
}

/* ==========================================================================
   Privacy Checkbox
   ========================================================================== */

.gc-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
    font-size: 14px;
    color: var(--gc-text-muted);
    line-height: 1.5;
}

.gc-checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--gc-primary);
    flex-shrink: 0;
    cursor: pointer;
    border-radius: 4px;
}

/* ==========================================================================
   Summary Table — Professional Quote Card
   ========================================================================== */

.gc-summary {
    background: var(--gc-bg);
    border: 2px solid var(--gc-border);
    border-radius: 20px;
    padding: 32px;
    margin-bottom: 32px;
    box-shadow: var(--gc-shadow);
    position: relative;
    overflow: hidden;
}

.gc-summary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--gc-primary), #60a5fa, #a78bfa);
}

.gc-summary-title {
    margin: 0 0 20px;
    font-size: 13px;
    font-weight: 700;
    color: var(--gc-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Step 4 left column — sticky summary */
.gc-step4-left {
    flex: 1.1;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

@media (min-width: 768px) {
    .gc-step4-left {
        position: sticky;
        top: 24px;
        align-self: flex-start;
    }
}

.gc-step4-left .gc-summary {
    margin-bottom: 0;
}

.gc-step4-left .gc-pricing {
    margin-top: 0;
}

.gc-btn-pdf {
    width: 100%;
    justify-content: center;
    font-size: 13.5px;
    padding: 12px 20px;
    gap: 8px;
    color: var(--gc-text-muted);
    border-style: dashed;
}

.gc-summary-table {
    width: 100%;
    border-collapse: collapse;
}

.gc-summary-table tr {
    transition: background var(--gc-transition);
}

.gc-summary-table tr:hover {
    background: rgba(37, 99, 235, 0.03);
}

.gc-summary-table td {
    padding: 10px 0;
    font-size: 13.5px;
    border-bottom: 1px solid var(--gc-bg-muted);
}

.gc-summary-table td:first-child {
    color: var(--gc-text-muted);
    font-weight: 500;
    padding-right: 12px;
}

.gc-summary-table td:last-child {
    font-weight: 700;
    color: var(--gc-text);
    text-align: right;
}

.gc-summary-table tr:last-child td {
    border-bottom: none;
}

/* Contact form */
.gc-contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.gc-contact-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--gc-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--gc-bg-muted);
}

.gc-contact-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 22px;
}

@media (min-width: 640px) {
    .gc-contact-row {
        grid-template-columns: 1fr 1fr;
    }
}

/* ==========================================================================
   Navigation Buttons — Premium
   ========================================================================== */

.gc-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
    gap: 16px;
}

.gc-btn {
    padding: 13px 30px;
    border: none;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    line-height: 1.4;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}

.gc-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

.gc-btn-primary {
    background: linear-gradient(135deg, var(--gc-primary) 0%, #3b82f6 100%);
    color: #fff;
    box-shadow: 0 4px 14px var(--gc-primary-glow);
}

.gc-btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 40%, rgba(255, 255, 255, 0.1) 50%, transparent 60%);
    transition: transform 0.6s ease;
    transform: translateX(-100%);
}

.gc-btn-primary:hover:not(:disabled)::after {
    transform: translateX(30%);
}

.gc-btn-primary:hover:not(:disabled) {
    box-shadow: 0 6px 24px var(--gc-primary-glow);
    transform: translateY(-2px);
}

.gc-btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.gc-btn-secondary {
    background: var(--gc-bg);
    color: var(--gc-text-secondary);
    border: 2px solid var(--gc-border);
}

.gc-btn-secondary:hover {
    background: var(--gc-bg-subtle);
    border-color: var(--gc-border-strong);
    transform: translateY(-1px);
    box-shadow: var(--gc-shadow);
}

.gc-btn-submit {
    width: 100%;
    padding: 18px 32px;
    font-size: 17px;
    border-radius: 14px;
    letter-spacing: 0;
}

/* ==========================================================================
   Success State — Celebration
   ========================================================================== */

.gc-success {
    text-align: center;
    padding: 72px 32px;
    animation: gcSlideIn 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.gc-success-icon {
    width: 88px;
    height: 88px;
    border-radius: 50%;
    background: linear-gradient(135deg, #dcfce7, #bbf7d0);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
    animation: gcPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s both;
    box-shadow: 0 8px 32px rgba(22, 163, 74, 0.2), 0 0 0 8px rgba(22, 163, 74, 0.06);
}

@keyframes gcPop {
    0% { transform: scale(0) rotate(-10deg); }
    60% { transform: scale(1.15) rotate(3deg); }
    100% { transform: scale(1) rotate(0deg); }
}

.gc-success-icon svg {
    width: 40px;
    height: 40px;
    color: var(--gc-success);
}

.gc-success h2 {
    margin: 0 0 14px;
    font-size: 32px;
    font-weight: 800;
    color: var(--gc-text);
    letter-spacing: -0.03em;
}

.gc-success p {
    color: var(--gc-text-muted);
    font-size: 17px;
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ==========================================================================
   Error Banner
   ========================================================================== */

.gc-error-banner {
    background: var(--gc-error-bg);
    border: 2px solid rgba(220, 38, 38, 0.2);
    border-radius: 12px;
    padding: 14px 18px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--gc-error);
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

/* ==========================================================================
   Loading Spinner
   ========================================================================== */

.gc-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: gcSpin 0.6s linear infinite;
}

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

/* ==========================================================================
   Honeypot
   ========================================================================== */

.gc-hp {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
    overflow: hidden;
    pointer-events: none;
    tab-index: -1;
}

/* ==========================================================================
   Pricing Display — Premium Gradient Card
   ========================================================================== */

.gc-pricing {
    margin-top: 8px;
    padding: 24px 28px;
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 50%, #a7f3d0 100%);
    border: 2px solid #6ee7b7;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.12);
}

.gc-pricing::before {
    content: '';
    position: absolute;
    top: -30px;
    right: -30px;
    width: 100px;
    height: 100px;
    background: rgba(16, 185, 129, 0.08);
    border-radius: 50%;
}

.gc-pricing::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: -20px;
    width: 60px;
    height: 60px;
    background: rgba(16, 185, 129, 0.06);
    border-radius: 50%;
}

.gc-pricing-label {
    font-size: 12px;
    color: #166534;
    font-weight: 700;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.gc-pricing-value {
    font-size: 32px;
    font-weight: 800;
    color: #15803d;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.gc-pricing-note {
    font-size: 12.5px;
    color: #6b7280;
    margin-top: 8px;
    line-height: 1.4;
}

/* ==========================================================================
   Scene Environment Toggle
   ========================================================================== */

.gc-preview.gc-preview--3d-active {
    padding: 0;
}

.gc-scene-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 24px;
    padding: 6px 16px;
    box-shadow: var(--gc-shadow-md);
    border: 1px solid var(--gc-border);
}

.gc-scene-label {
    font-size: 11px;
    color: var(--gc-text-muted);
    font-weight: 600;
    margin-right: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.gc-scene-btn {
    padding: 5px 14px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid var(--gc-border);
    border-radius: 20px;
    background: var(--gc-bg);
    color: var(--gc-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    line-height: 1.4;
}

.gc-scene-btn:hover {
    border-color: var(--gc-border-strong);
    color: var(--gc-text);
    background: var(--gc-bg-subtle);
}

.gc-scene-btn.active {
    background: var(--gc-primary);
    border-color: var(--gc-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

/* ==========================================================================
   Measurement Guide
   ========================================================================== */

.gc-measure-help-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    color: var(--gc-primary);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    padding: 3px 8px;
    border-radius: var(--gc-radius-xs);
    font-family: inherit;
    transition: all var(--gc-transition);
    vertical-align: middle;
}

.gc-measure-help-btn:hover {
    background: var(--gc-primary-light);
    text-decoration: underline;
}

.gc-measure-help-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border: 2px solid currentColor;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
    flex-shrink: 0;
}

/* ==========================================================================
   Save & Compare Buttons
   ========================================================================== */

.gc-save-compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 16px 20px;
    background: var(--gc-bg-subtle);
    border: 1.5px solid var(--gc-border);
    border-radius: 14px;
}

.gc-save-compare .gc-btn {
    justify-content: center;
    font-size: 12.5px;
    padding: 10px 12px;
}

.gc-save-compare .gc-btn:last-child:nth-child(odd) {
    grid-column: 1 / -1;
}

.gc-btn-sm {
    padding: 8px 14px;
    font-size: 13px;
    gap: 5px;
}

.gc-btn-xs {
    padding: 5px 12px;
    font-size: 12px;
    gap: 4px;
}

/* ==========================================================================
   Modal Overlay — Frosted Glass
   ========================================================================== */

.gc-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999999;
    padding: 20px;
    animation: gcFadeIn 0.25s ease;
}

@keyframes gcFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.gc-modal {
    background: #fff;
    border-radius: 20px;
    max-width: 540px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--gc-shadow-xl);
    animation: gcSlideUp 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.gc-modal-wide {
    max-width: 740px;
}

@keyframes gcSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.gc-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 28px;
    border-bottom: 1px solid var(--gc-border);
}

.gc-modal-header h3 {
    margin: 0;
    font-size: 19px;
    font-weight: 800;
    color: var(--gc-text);
    letter-spacing: -0.02em;
}

.gc-modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--gc-bg-muted);
    border-radius: 10px;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    color: var(--gc-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.gc-modal-close:hover {
    background: var(--gc-border);
    color: var(--gc-text);
    transform: rotate(90deg);
}

.gc-modal-body {
    padding: 28px;
}

/* ==========================================================================
   Measurement Guide Content
   ========================================================================== */

.gc-measure-illustration {
    background: linear-gradient(145deg, #f8fafc, #f1f5f9);
    border: 1px solid var(--gc-border);
    border-radius: 14px;
    padding: 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gc-measure-illustration svg {
    width: 100%;
    max-width: 320px;
    height: auto;
}

.gc-measure-steps {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gc-measure-steps li {
    padding: 14px 18px;
    background: var(--gc-bg-subtle);
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
    color: var(--gc-text-secondary);
    border: 1px solid var(--gc-border);
}

.gc-measure-steps li strong {
    color: var(--gc-text);
    margin-right: 4px;
}

.gc-measure-tip {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    background: #fef3c7;
    border: 1px solid #fcd34d;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.5;
    color: #92400e;
    font-weight: 500;
}

.gc-measure-tip svg {
    flex-shrink: 0;
    color: #d97706;
    margin-top: 1px;
}

/* ==========================================================================
   Comparison Grid
   ========================================================================== */

.gc-compare-empty {
    text-align: center;
    color: var(--gc-text-muted);
    padding: 40px 20px;
    font-size: 15px;
}

.gc-compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.gc-compare-card {
    border: 2px solid var(--gc-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.25s ease;
    background: #fff;
}

.gc-compare-card:hover {
    box-shadow: var(--gc-shadow-md);
    border-color: var(--gc-border-strong);
    transform: translateY(-2px);
}

.gc-compare-preview {
    background: linear-gradient(145deg, #f3f6f9, #e9edf2);
    height: 160px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gc-compare-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gc-compare-preview-placeholder {
    font-size: 14px;
    font-weight: 700;
    color: var(--gc-text-faint);
}

.gc-compare-info {
    padding: 16px 18px;
}

.gc-compare-label {
    font-size: 15px;
    font-weight: 700;
    color: var(--gc-text);
    margin-bottom: 2px;
}

.gc-compare-date {
    font-size: 12px;
    color: var(--gc-text-faint);
    margin-bottom: 12px;
}

.gc-compare-details {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

.gc-compare-details span {
    font-size: 11px;
    padding: 4px 10px;
    background: var(--gc-bg-muted);
    border-radius: 6px;
    color: var(--gc-text-secondary);
    font-weight: 600;
}

.gc-compare-actions {
    display: flex;
    gap: 8px;
}

.gc-compare-footer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--gc-border);
    display: flex;
    justify-content: flex-end;
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */

.gc-toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: #fff;
    padding: 14px 24px;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    z-index: 9999999;
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.gc-toast svg {
    color: #4ade80;
    flex-shrink: 0;
}

.gc-toast-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.gc-toast--warning {
    background: linear-gradient(135deg, #7c2d12, #92400e);
}

.gc-toast--warning svg {
    color: #fbbf24;
}

/* ==========================================================================
   Product Selector Grid
   ========================================================================== */

.gc-product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 18px;
}

.gc-product-card svg {
    width: 80px;
    height: 80px;
    padding: 16px;
    background: linear-gradient(135deg, var(--gc-primary-light), rgba(96, 165, 250, 0.08));
    border-radius: 50%;
    transition: all 0.3s ease;
}

.gc-product-card:hover svg,
.gc-product-card.selected svg {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(96, 165, 250, 0.15));
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.1);
}

/* ==========================================================================
   Counter Controls (+/-)
   ========================================================================== */

.gc-counter {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 8px;
}

.gc-counter-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 2px solid var(--gc-border);
    background: var(--gc-bg);
    font-size: 18px;
    font-weight: 700;
    color: var(--gc-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.gc-counter-btn:hover:not([disabled]) {
    border-color: var(--gc-primary);
    color: var(--gc-primary);
    background: var(--gc-primary-light);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

.gc-counter-btn[disabled] {
    opacity: 0.3;
    cursor: not-allowed;
}

.gc-counter-val {
    font-size: 20px;
    font-weight: 700;
    min-width: 32px;
    text-align: center;
    color: var(--gc-text);
}

/* ==========================================================================
   Color Picker
   ========================================================================== */

.gc-color-picker {
    width: 60px;
    height: 40px;
    padding: 2px;
    border: 2px solid var(--gc-border);
    border-radius: 8px;
    cursor: pointer;
    background: none;
}

.gc-color-picker::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.gc-color-picker::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

/* ==========================================================================
   Image Upload Area
   ========================================================================== */

.gc-upload-area {
    border: 2px dashed var(--gc-border-strong);
    border-radius: var(--gc-radius);
    padding: 6px;
    text-align: center;
    transition: all 0.25s ease;
}

.gc-upload-area:hover {
    border-color: var(--gc-primary);
    background: var(--gc-primary-light);
}

.gc-upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 24px 16px;
    cursor: pointer;
    color: var(--gc-text-muted);
    font-size: 14px;
    font-weight: 500;
}

.gc-upload-label svg {
    opacity: 0.4;
}

.gc-upload-input {
    display: none;
}

.gc-upload-preview {
    position: relative;
    display: inline-block;
}

.gc-upload-preview img {
    max-width: 100%;
    max-height: 140px;
    border-radius: var(--gc-radius-sm);
    display: block;
}

.gc-upload-remove {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: none;
    background: #ef4444;
    color: #fff;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    transition: all 0.15s ease;
}

.gc-upload-remove:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* ==========================================================================
   Door & Fixed Elements Configuration
   ========================================================================== */

.gc-field-separator {
    margin-top: 8px;
    padding-top: 18px;
    border-top: 1px solid var(--gc-border);
}

.gc-field-label-section {
    font-size: 12px;
    color: var(--gc-primary);
    letter-spacing: 0.06em;
    font-weight: 700;
}

/* Section header card — no bottom padding, acts as a divider label */
.gc-controls > .gc-field:has(> .gc-field-label-section) {
    padding: 14px 20px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.04), rgba(96, 165, 250, 0.03));
    border-color: rgba(37, 99, 235, 0.15);
    border-left: 3px solid var(--gc-primary);
}

/* Read-only calculated fields — muted/non-interactive look */
.gc-calculated-dim {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--gc-bg-muted);
    border: 1.5px dashed var(--gc-border);
    border-radius: var(--gc-radius-sm);
    opacity: 0.75;
}

.gc-calculated-dim .gc-field-label {
    text-transform: none;
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0;
}

.gc-dim-auto {
    font-size: 15px;
    font-weight: 600;
    color: var(--gc-text-secondary);
}

/* ==========================================================================
   Custom Sketch Upload
   ========================================================================== */

.gc-custom-upload-section {
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.gc-custom-upload-section .gc-upload-area {
    min-height: 180px;
}

.gc-custom-upload-section .gc-upload-preview img {
    max-height: 260px;
}

/* ==========================================================================
   Success Action Buttons
   ========================================================================== */

.gc-success-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.gc-btn-whatsapp {
    background: linear-gradient(135deg, #25D366, #20bd5a);
    color: #fff;
    border: none;
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.3);
}

.gc-btn-whatsapp:hover {
    background: linear-gradient(135deg, #1fb855, #18a84b);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.35);
    color: #fff;
}

.gc-btn-share {
    background: var(--gc-bg);
    color: var(--gc-text-secondary);
    border: 2px solid var(--gc-border);
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all var(--gc-transition);
}

.gc-btn-share:hover {
    background: var(--gc-bg-subtle);
    border-color: var(--gc-border-strong);
    transform: translateY(-1px);
    box-shadow: var(--gc-shadow);
}

.gc-btn-booking {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    margin-top: 0;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 639px) {
    .konfigsuite-configurator {
        padding: 4px;
    }

    .gc-step-title {
        font-size: 22px;
    }

    .gc-step-subtitle {
        font-size: 14px;
        margin-bottom: 24px;
    }

    .gc-btn {
        padding: 11px 22px;
        font-size: 14px;
    }

    .gc-btn-submit {
        padding: 15px 22px;
        font-size: 16px;
    }

    .gc-options {
        gap: 8px;
    }

    .gc-option {
        padding: 9px 14px;
        font-size: 13px;
    }

    .gc-controls > .gc-field {
        padding: 16px;
    }

    .gc-save-compare {
        padding: 12px 16px;
    }

    .gc-preview {
        min-height: 260px;
        padding: 20px;
        border-radius: 16px;
    }

    .gc-summary {
        padding: 20px;
        border-radius: 16px;
    }


    .gc-progress {
        padding: 10px 16px;
        margin-bottom: 32px;
    }

    .gc-progress-number {
        width: 34px;
        height: 34px;
        font-size: 13px;
    }
}

@media (max-width: 374px) {
    .gc-layouts {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Touch & Focus States
   ========================================================================== */

@media (hover: none) {
    .gc-layout-card:active {
        border-color: var(--gc-primary);
        transform: scale(0.97);
    }

    .gc-option:active {
        background: var(--gc-primary-light);
        border-color: var(--gc-primary);
    }

    .gc-btn-primary:active:not(:disabled) {
        background: var(--gc-primary-hover);
        transform: scale(0.97);
    }

    .gc-btn-secondary:active {
        background: var(--gc-bg-muted);
    }

    .gc-counter-btn:active:not([disabled]) {
        background: var(--gc-primary-light);
        border-color: var(--gc-primary);
        transform: scale(0.92);
    }

    .gc-toggle:active .gc-toggle-track {
        opacity: 0.8;
    }
}

.gc-counter-btn:focus-visible {
    outline: 2px solid var(--gc-primary);
    outline-offset: 2px;
}

.gc-option:focus-visible {
    outline: 2px solid var(--gc-primary);
    outline-offset: 2px;
}

.gc-toggle:focus-visible .gc-toggle-track {
    box-shadow: 0 0 0 3px var(--gc-primary-ring);
}

.gc-layout-card:focus-visible {
    outline: 2px solid var(--gc-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   Site Photo Upload
   ========================================================================== */

.gc-photo-upload {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gc-photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 10px;
}

.gc-photo-thumb {
    position: relative;
    aspect-ratio: 1;
    border-radius: 10px;
    overflow: hidden;
    border: 2px solid var(--gc-border);
    background: var(--gc-bg-muted);
}

.gc-photo-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gc-photo-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: none;
    background: rgba(239, 68, 68, 0.9);
    color: #fff;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.15s ease;
    opacity: 0;
}

.gc-photo-thumb:hover .gc-photo-remove {
    opacity: 1;
}

.gc-photo-remove:hover {
    background: #dc2626;
    transform: scale(1.1);
}

.gc-photo-drop {
    transition: border-color 0.2s ease, background 0.2s ease;
}

.gc-photo-drop.gc-drag-over {
    border-color: var(--gc-primary);
    background: var(--gc-primary-light);
}

/* ==========================================================================
   Clickable Progress Steps
   ========================================================================== */

.gc-progress-step.gc-progress-clickable {
    cursor: pointer;
}

.gc-progress-step.gc-progress-clickable:hover .gc-progress-number {
    transform: scale(1.15);
    box-shadow: 0 0 0 5px var(--gc-primary-ring), 0 4px 14px var(--gc-primary-glow);
}

.gc-progress-step.gc-progress-clickable:hover {
    color: var(--gc-text);
}

/* ==========================================================================
   Sticky Price Bar
   ========================================================================== */

.gc-sticky-price {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 99999;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--gc-border);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
    animation: gcSlideUp 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.gc-sticky-price-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.gc-sticky-price-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.gc-sticky-price-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--gc-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.gc-sticky-price-val {
    font-size: 22px;
    font-weight: 800;
    color: var(--gc-text);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.gc-sticky-price-cta {
    flex-shrink: 0;
    white-space: nowrap;
}

@media (max-width: 639px) {
    .gc-sticky-price-inner {
        padding: 12px 16px;
    }

    .gc-sticky-price-val {
        font-size: 18px;
    }

    .gc-sticky-price-cta {
        padding: 10px 20px;
        font-size: 13px;
    }
}

/* ==========================================================================
   Direct Dimension Input (Editable Values)
   ========================================================================== */

.gc-dimension-editable {
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 6px;
    padding: 2px 8px;
    margin: -2px -8px;
}

.gc-dimension-editable:hover {
    background: var(--gc-primary-light);
    color: var(--gc-primary);
    box-shadow: 0 0 0 2px var(--gc-primary-ring);
}

.gc-dimension-inline-input {
    width: 100px;
    padding: 4px 8px;
    border: 2px solid var(--gc-primary);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    color: var(--gc-text);
    background: var(--gc-bg);
    box-shadow: 0 0 0 4px var(--gc-primary-ring);
    outline: none;
    font-family: inherit;
    font-variant-numeric: tabular-nums;
    text-align: right;
    -moz-appearance: textfield;
}

.gc-dimension-inline-input::-webkit-outer-spin-button,
.gc-dimension-inline-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* ==========================================================================
   Tooltip Info Icon & Popup
   ========================================================================== */

.gc-info-tip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    min-width: 16px;
    margin-left: auto;
    cursor: help;
    color: var(--gc-text-faint);
    font-size: 10px;
    font-weight: 800;
    font-style: italic;
    font-family: Georgia, 'Times New Roman', serif;
    transition: all 0.2s ease;
    flex-shrink: 0;
    border-radius: 50%;
    border: 1.5px solid currentColor;
    line-height: 1;
}

.gc-info-tip:hover {
    opacity: 1;
    color: var(--gc-primary);
    background: var(--gc-primary-light);
}

.gc-option.selected .gc-info-tip {
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.15);
}

.gc-option.selected .gc-info-tip:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.25);
}

.gc-tooltip-popup {
    position: fixed;
    z-index: 9999999;
    background: #fff;
    color: var(--gc-text, #0f172a);
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 13px;
    line-height: 1.5;
    max-width: 260px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15), 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.06);
    pointer-events: none;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    font-weight: 500;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.gc-tooltip-popup::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 10px;
    height: 10px;
    background: #fff;
    border-right: 1px solid rgba(0, 0, 0, 0.06);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.gc-tooltip-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Price Breakdown
   ========================================================================== */

.gc-price-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    color: #166534;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    padding: 6px 0 2px;
    font-family: inherit;
    transition: color 0.2s ease;
    position: relative;
    z-index: 1;
}

.gc-price-toggle:hover {
    color: #15803d;
    text-decoration: underline;
}

.gc-price-toggle svg {
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.gc-price-breakdown {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease, margin 0.35s ease;
    margin-top: 0;
    position: relative;
    z-index: 1;
}

.gc-price-details-open .gc-price-breakdown {
    max-height: 400px;
    opacity: 1;
    margin-top: 12px;
}

.gc-price-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.gc-price-table td {
    padding: 6px 0;
    border-bottom: 1px solid rgba(22, 101, 52, 0.1);
}

.gc-price-table td:first-child {
    color: #166534;
    font-weight: 500;
    padding-right: 12px;
}

.gc-price-table td:last-child {
    text-align: right;
    font-weight: 600;
    color: #15803d;
    font-variant-numeric: tabular-nums;
}

.gc-price-table tr:last-child td {
    border-bottom: none;
}

.gc-price-table-total td {
    border-top: 2px solid rgba(22, 101, 52, 0.2);
    border-bottom: none !important;
    padding-top: 8px;
    font-weight: 800 !important;
    font-size: 14px;
}

/* ==========================================================================
   Option Preview on Hover (Feature 9)
   ========================================================================== */

.gc-option-previewing {
    border-color: rgba(37, 99, 235, 0.5);
    box-shadow: 0 0 0 2px var(--gc-primary-ring), 0 2px 12px rgba(37, 99, 235, 0.12);
    animation: gcOptionPreviewPulse 1.2s ease-in-out infinite;
}

@keyframes gcOptionPreviewPulse {
    0%, 100% { box-shadow: 0 0 0 2px var(--gc-primary-ring), 0 2px 12px rgba(37, 99, 235, 0.12); }
    50% { box-shadow: 0 0 0 4px var(--gc-primary-ring), 0 4px 16px rgba(37, 99, 235, 0.2); }
}

/* ==========================================================================
   Option Badges (Feature 10)
   ========================================================================== */

.gc-badge {
    display: inline-block;
    padding: 2px 7px;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    line-height: 1.3;
    border-radius: 4px;
    background: #fef3c7;
    color: #92400e;
    white-space: nowrap;
    border: 1px solid #fcd34d;
    margin-left: 6px;
    flex-shrink: 0;
}

.gc-option.selected .gc-badge {
    background: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.3);
}

/* ==========================================================================
   Mobile Sticky Price Footer (Feature 11)
   ========================================================================== */

@media (max-width: 767px) {
    .gc-sticky-price-inner {
        padding: 10px 16px;
    }
    .gc-sticky-price-val {
        font-size: 20px;
    }
    .gc-sticky-price-cta {
        padding: 10px 18px;
        font-size: 13px;
    }
}

/* ==========================================================================
   3D Drag Hint (Feature 12)
   ========================================================================== */

.gc-3d-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--gc-text-muted);
    font-size: 13px;
    font-weight: 600;
    z-index: 5;
    pointer-events: none;
    animation: gc3dHintSway 2s ease-in-out infinite;
}

.gc-3d-hint svg {
    opacity: 0.6;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

@keyframes gc3dHintSway {
    0%, 100% { transform: translate(-50%, -50%) translateX(0); }
    25% { transform: translate(-50%, -50%) translateX(15px); }
    75% { transform: translate(-50%, -50%) translateX(-15px); }
}

.gc-3d-hint-exit {
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* ==========================================================================
   Option Price Surcharge Labels
   ========================================================================== */

.gc-option-price {
    font-size: 11px;
    font-weight: 600;
    color: var(--gc-text-faint);
    margin-left: auto;
    padding-left: 8px;
    white-space: nowrap;
}

.gc-option.selected .gc-option-price {
    color: rgba(255, 255, 255, 0.7);
}

/* ==========================================================================
   Progress Bar Price
   ========================================================================== */

.gc-progress-price {
    margin-left: auto;
    padding-left: 16px;
    border-left: 1px solid var(--gc-border);
    font-size: 14px;
    font-weight: 700;
    color: var(--gc-text);
    white-space: nowrap;
    display: none;
    list-style: none;
}

@media (min-width: 640px) {
    .gc-progress-price {
        display: flex;
        align-items: center;
    }
}

/* ==========================================================================
   Layout Card Price
   ========================================================================== */

.gc-layout-card-price {
    font-size: 12px;
    font-weight: 600;
    color: var(--gc-primary);
    margin-top: 2px;
}

.gc-layout-card-price .gc-option-price {
    font-size: 12px;
    color: var(--gc-primary);
    margin-left: 0;
    padding-left: 0;
}

/* ==========================================================================
   3D Background Toggle
   ========================================================================== */

.gc-bg-toggle {
    position: absolute;
    top: 14px;
    right: 14px;
    margin-top: 46px;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1.5px solid var(--gc-border);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gc-text-muted);
    box-shadow: var(--gc-shadow-md);
    z-index: 2;
    transition: all var(--gc-transition);
    padding: 0;
}

.gc-bg-toggle:hover {
    background: var(--gc-bg-muted);
    color: var(--gc-text);
    transform: scale(1.08);
}

.gc-preview--dark .gc-bg-toggle {
    background: rgba(30, 35, 50, 0.85);
    border-color: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.7);
}

.gc-preview--dark .gc-bg-toggle:hover {
    background: rgba(40, 48, 68, 0.9);
    color: #fff;
}

.gc-preview--dark .gc-view-toggle button {
    background: rgba(30, 35, 50, 0.85);
    color: rgba(255, 255, 255, 0.6);
    border-color: rgba(255, 255, 255, 0.1);
}

.gc-preview--dark .gc-view-toggle button.active {
    background: var(--gc-primary);
    color: #fff;
}

.gc-preview--dark .gc-view-toggle {
    border-color: rgba(255, 255, 255, 0.15);
}

/* Print */
@media print {
    .gc-nav,
    .gc-progress,
    .gc-sticky-price {
        display: none;
    }
}