:root{--color-bg: #f8f9fa;--color-surface: #ffffff;--color-border: #dee2e6;--color-text: #212529;--color-text-muted: #6c757d;--color-primary: #0d6efd;--color-primary-hover: #0b5ed7;--color-success: #198754;--color-danger: #dc3545;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1);--shadow-lg: 0 4px 12px rgba(0,0,0,.15)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5;color:var(--color-text);background-color:var(--color-bg);background-image:radial-gradient(circle,#d0d0d0 1px,transparent 1px);background-size:20px 20px;background-position:0 0;background-attachment:fixed}.container{max-width:1400px;margin:0 auto;padding:20px}.grid{display:grid;grid-template-columns:400px 1fr;gap:20px;height:calc(100vh - 100px);overflow:hidden}@media(max-width:1024px){.grid{grid-template-columns:1fr}}.config-panel{max-height:calc(100vh - 40px);overflow-y:auto}.card{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card-header{font-size:16px;font-weight:600;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--color-border)}.form-group{margin-bottom:16px}.form-label{display:block;font-weight:500;margin-bottom:6px;color:var(--color-text)}.form-hint{font-size:12px;color:var(--color-text-muted);margin-top:4px}input[type=text],input[type=number],select,textarea{width:100%;padding:8px 12px;font-size:14px;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);color:var(--color-text);transition:border-color .15s,box-shadow .15s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #0d6efd26}input[type=checkbox]{width:18px;height:18px;margin-right:8px;cursor:pointer}.checkbox-label{display:flex;align-items:center;cursor:pointer}.checkbox-label.disabled{opacity:.5;cursor:not-allowed}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:500;border:none;border-radius:var(--radius);cursor:pointer;transition:all .15s}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover{background:linear-gradient(135deg,#5a6fd6,#6a4190)}.btn-primary:disabled{background:linear-gradient(135deg,#a0aef0,#a085c0);cursor:not-allowed}.btn-generate{background:linear-gradient(135deg,#11998e,#38ef7d);color:#fff}.btn-generate:hover{background:linear-gradient(135deg,#0d7d73,#2cc966)}.btn-generate:disabled{background:linear-gradient(135deg,#7bc4be,#8cf0b5);cursor:not-allowed}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover{background:var(--color-bg)}.btn-lg{padding:14px 28px;font-size:16px}.accordion{border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden}.accordion-item{border-bottom:1px solid var(--color-border)}.accordion-item:last-child{border-bottom:none}.accordion-header{padding:12px 16px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-weight:500;cursor:pointer;display:flex;justify-content:space-between;align-items:center;-webkit-user-select:none;user-select:none}.accordion-header:hover{background:linear-gradient(135deg,#5a6fd6,#6a4190)}.accordion-content{padding:16px;display:none}.accordion-content.open{display:block}.preview-container{position:sticky;top:20px;height:calc(100vh - 100px);display:flex;flex-direction:column;gap:8px}.preview-frame{flex:1 1 0;min-height:0;border:1px solid var(--color-border);border-radius:var(--radius);background:#525659;display:flex;align-items:center;justify-content:center;overflow:hidden}.preview-frame iframe,.preview-frame embed{width:100%;height:100%;border:none}.preview-placeholder{color:#adb5bd;text-align:center}.progress-container{margin-top:16px}.progress-bar{height:8px;background:var(--color-border);border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:var(--color-primary);transition:width .3s}.progress-text{font-size:12px;color:var(--color-text-muted);margin-top:8px}header{background:transparent;padding:16px 20px;display:flex;justify-content:space-between;align-items:center}header h1{margin:0;font-size:24px;font-weight:700}header .tagline{color:var(--color-text-muted);font-size:14px}.tabs{display:flex;gap:4px;margin-bottom:16px;border-bottom:1px solid var(--color-border)}.tab{padding:8px 16px;border:none;background:none;cursor:pointer;font-size:14px;color:var(--color-text-muted);border-bottom:2px solid transparent;margin-bottom:-1px}.tab:hover{color:var(--color-text)}.tab.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.list-item{display:flex;align-items:center;gap:12px;padding:8px 0;border-bottom:1px solid var(--color-border)}.list-item:last-child{border-bottom:none}.list-item input[type=text]{flex:1}.list-item .btn-remove{padding:4px 8px;font-size:12px;color:var(--color-danger);background:none;border:none;cursor:pointer}.row{display:flex;gap:12px}.col{flex:1}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.text-muted{color:var(--color-text-muted)}.text-center{text-align:center}.user-message{padding:8px 12px;border-radius:var(--radius);font-size:13px;text-align:center}.user-message.success{background:#d4edda;color:#155724}.user-message.warning{background:#fff3cd;color:#856404}.user-message.error{background:#f8d7da;color:#721c24}