:root { 
	--bg: #f1f5f9; --panel: #ffffff; --accent: #2563eb; 
	--text-main: #1e293b; --text-sub: #64748b; --border: #e2e8f0; 
}

.app-container { display: grid; grid-template-columns: 325px 1fr; }

@media (max-width: 1024px) {
	.app-container { grid-template-columns: 1fr; height: auto; }
	.controls { height: auto !important; border-right: none !important; border-bottom: 1px solid var(--border); }
}

.controls { border-right: 1px solid var(--border); padding-right: 1.5rem; }
.preview-area { padding: 1rem 0rem 3rem 1.5rem; display: flex; flex-direction: column;  }

h2 { font-size: 1.1rem; margin-bottom: 1.5rem; font-weight: 800; display: flex; align-items: center; gap: 8px; }
.control-group { margin-bottom: 1rem; background: white; padding: 1.2rem; border-radius: 12px; border: 1px solid var(--border); box-shadow: 0 1px 2px rgba(0,0,0,0.05); }
label.section-label { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-sub); font-weight: 700; display: block; margin-bottom: 1rem; }

.preset-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; margin-bottom: 10px; }
.btn-preset { background: #f8fafc; border: 1px solid var(--border); padding: 6px; font-size: 0.72rem; border-radius: 6px; cursor: pointer; font-weight: 500; transition: 0.2s; }
.btn-preset:hover { background: var(--accent); color: white; border-color: var(--accent); }

.control-row { margin-bottom: 15px; }
.label-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.label-text { font-size: 0.8rem; font-weight: 500; }
.val-badge { background: #f8fafc; border: 1px solid var(--border); padding: 2px 8px; border-radius: 4px; font-size: 0.7rem; font-family: monospace; color: var(--accent); }

input[type="range"] { width: 100%; accent-color: var(--accent); cursor: pointer; display: block; }

.color-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 5px; }
.color-item { display: flex; align-items: center; gap: 6px; font-size: 0.62rem; background: #f8fafc; padding: 6px; border-radius: 6px; border: 1px solid var(--border); }
input[type="color"] { border: 1px solid var(--border); width: 16px; height: 16px; cursor: pointer; border-radius: 4px; padding: 0; background: none; }

select { width: 100%; padding: 10px; border-radius: 8px; border: 1px solid var(--border); background: #f8fafc; font-size: 0.8rem; cursor: pointer; }
.switch-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; margin-bottom: 12px; font-size: 0.82rem; }

.switch { position: relative; width: 34px; height: 18px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider-tog { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #cbd5e1; transition: .3s; border-radius: 20px; }
.slider-tog:before { position: absolute; content: ""; height: 12px; width: 12px; left: 3px; bottom: 3px; background-color: white; transition: .3s; border-radius: 50%; }
input:checked + .slider-tog { background-color: var(--accent); }
input:checked + .slider-tog:before { transform: translateX(16px); }

.btn-stack { display: grid; gap: 8px; grid-template-columns: repeat(3, 1fr); }
button.action-btn { border: none; padding: 12px; border-radius: 8px; cursor: pointer; font-weight: 600; font-size: 0.85rem; transition: 0.2s; background: var(--text-main); color: white;}

#render-area { width: 100%; display: flex; justify-content: center; }

.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  min-width: 240px;
  max-width: 360px;
  padding: 14px 20px;
  border-radius: 10px;
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  display: none;
  z-index: 12;
  box-shadow:
    0 10px 25px rgba(0,0,0,0.25),
    inset 0 1px 0 rgba(255,255,255,0.15);
  animation: toast-in 0.35s cubic-bezier(.21,.8,.35,1);
}

.toast--success {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

.toast--warning {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.toast--error {
  background: linear-gradient(135deg, #ef4444, #dc2626);
}

.toast--info {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.toast--hide {
  animation: toast-out 0.3s ease-in forwards;
}

@keyframes toast-in {
  from {
    transform: translateX(120%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes toast-out {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(120%);
    opacity: 0;
  }
}