:root {
    --primary: #2a9d8f;
    --primary-dark: #21867a;
    --secondary: #264653;
    --accent: #e9c46a;
    --bg: #faf8f5;
    --card: #ffffff;
    --text: #264653;
    --text-light: #6b7280;
    --border: #e5e2dd;
    --radius: 12px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* Progress bar */
#progress {
    display: flex;
    justify-content: center;
    gap: 4px;
    padding: 16px 20px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.progress-step {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-light);
    background: var(--bg);
    transition: all 0.3s;
}

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

.progress-step.done {
    background: var(--primary);
    opacity: 0.6;
    color: white;
}

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

.progress-step.clickable:hover {
    opacity: 0.85;
    transform: translateY(-1px);
}

/* Steps */
.step { display: none; max-width: 900px; margin: 0 auto; padding: 40px 20px; }
.step.active { display: block; }

/* Hero */
.hero { text-align: center; padding: 48px 0 24px; }
.hero h1 { font-size: 3.5rem; font-weight: 800; color: var(--secondary); margin-bottom: 12px; letter-spacing: -1px; }
.hero-sub { font-size: 1.3rem; color: var(--primary); font-weight: 500; margin-bottom: 16px; }
.hero-desc { color: var(--text-light); max-width: 500px; margin: 0 auto 32px; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-lg { padding: 14px 36px; font-size: 17px; }

/* Method cards */
.method-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
.method-card {
    background: var(--card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}
.method-card:hover { border-color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow); }
.method-icon { font-size: 3rem; margin-bottom: 16px; }
.method-card h3 { margin-bottom: 8px; }
.method-card p { color: var(--text-light); font-size: 14px; }

/* Map */
.map-controls { display: flex; gap: 16px; margin-bottom: 16px; align-items: flex-start; flex-wrap: wrap; }
.search-box { flex: 1; min-width: 250px; position: relative; }
.search-box input {
    width: 100%;
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    outline: none;
}
.search-box input:focus { border-color: var(--primary); }
.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 0 0 8px 8px;
    display: none;
    z-index: 50;
    box-shadow: var(--shadow);
}
.search-results.show { display: block; }
.search-result-item {
    padding: 10px 16px;
    cursor: pointer;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}
.search-result-item:hover { background: var(--bg); }
.search-result-item:last-child { border-bottom: none; }

.radius-control { display: flex; flex-direction: column; gap: 4px; }
.radius-control label { font-size: 13px; font-weight: 500; }
.radius-control input[type="range"] { width: 150px; }

/* Shape controls */
.shape-controls { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 16px; }
.shape-controls h3 { font-size: 14px; margin-bottom: 10px; }
.shape-types { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.shape-btn {
    padding: 8px 16px; border: 2px solid var(--border); border-radius: 8px;
    background: var(--bg); font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.2s;
}
.shape-btn:hover { border-color: var(--primary); }
.shape-btn.active { border-color: var(--primary); background: rgba(42, 157, 143, 0.1); color: var(--primary); }
.shape-sliders { display: flex; gap: 16px; flex-wrap: wrap; }
.slider-row { flex: 1; min-width: 140px; }
.slider-row label { font-size: 12px; font-weight: 500; display: block; margin-bottom: 4px; }
.slider-row input[type="range"] { width: 100%; }

#soap-map {
    width: 100%;
    height: 450px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    z-index: 1;
}

.selected-location { margin-top: 12px; font-size: 14px; color: var(--text-light); min-height: 20px; }

/* Upload */
.drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 60px 40px;
    text-align: center;
    transition: all 0.2s;
    background: var(--card);
    margin-top: 24px;
}
.drop-zone.drag-over { border-color: var(--primary); background: rgba(42, 157, 143, 0.05); }
.drop-icon { font-size: 3rem; margin-bottom: 16px; }
.drop-hint { color: var(--text-light); font-size: 13px; margin: 8px 0 20px; }

/* 3D Viewer */
#viewer-container {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius);
    overflow: hidden;
    background: #1a1a2e;
    margin-bottom: 24px;
}

/* Preview controls */
.preview-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }
.control-group { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.control-group h3 { font-size: 13px; text-transform: uppercase; color: var(--text-light); letter-spacing: 0.5px; margin-bottom: 10px; }
.smooth-hint { color: var(--text-light); }

/* Color picker */
.color-options { display: flex; gap: 16px; }
.color-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border: 2px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
}
.color-option.selected { border-color: var(--primary); background: rgba(42, 157, 143, 0.05); }
.color-option:hover { border-color: var(--primary); }
.color-swatch { width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--border); }
.white-swatch { background: linear-gradient(135deg, #f5f0e8, #ede8df); }
.black-swatch { background: linear-gradient(135deg, #2a2a2a, #1a1a1a); }

/* Order form */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group.full-width { grid-column: 1 / -1; }
.form-group label { font-size: 13px; font-weight: 600; }
.form-group input, .form-group textarea {
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    outline: none;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--primary); }

/* Confirmation */
.confirmation { text-align: center; padding: 80px 0; }
.confirmation-icon {
    width: 80px; height: 80px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    font-size: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}
.confirmation h2 { margin-bottom: 12px; }
.confirmation p { color: var(--text-light); max-width: 400px; margin: 0 auto 32px; }

/* Step actions */
.step-actions { display: flex; justify-content: space-between; align-items: center; margin-top: 24px; }

/* Loading */
.loading {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(250, 248, 245, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: var(--radius);
}
.loading.hidden { display: none; }
.spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Footer */
footer {
    text-align: center;
    padding: 32px 20px;
    color: var(--text-light);
    font-size: 13px;
    border-top: 1px solid var(--border);
    margin-top: 60px;
}

/* Responsive */
@media (max-width: 640px) {
    .hero h1 { font-size: 2.2rem; }
    .method-cards { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    #soap-map { height: 350px; }
    .map-controls { flex-direction: column; }
    .color-options { flex-direction: column; }
    .preview-controls { grid-template-columns: 1fr; }
}