/* General Body & Font */
body {
    font-family: 'Inter', sans-serif;
    background-color: #f8fafc; /* Tailwind's gray-50 */
}

/* Main Header */
.main-header {
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e2e8f0; /* gray-200 */
}

/* Control Panel & Accordion */
.control-panel-container {
    background-color: #ffffff;
    border-radius: 0.75rem; /* lg */
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    padding: 1rem;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.controls-accordion {
    flex-grow: 1;
    overflow-y: auto;
    padding-right: 8px; /* For scrollbar */
}

.accordion-item {
    border-bottom: 1px solid #f1f5f9; /* gray-100 */
}
.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1rem 0.5rem;
    font-weight: 600; /* semibold */
    color: #334155; /* slate-700 */
    cursor: pointer;
    transition: background-color 0.2s ease-in-out;
}
.accordion-header:hover {
    background-color: #f8fafc; /* gray-50 */
}
.accordion-header h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem; /* 3 */
    font-size: 1.125rem; /* text-lg */
}
.accordion-header .accordion-icon {
    transition: transform 0.3s ease-in-out;
}
.accordion-header.active .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    padding: 0 0.5rem 1rem 0.5rem;
    overflow: hidden;
    transition: max-height 0.3s ease-in-out, visibility 0.3s ease-in-out;
    max-height: 1000px; /* Set a large max-height for open state */
}

.accordion-content.hidden {
    max-height: 0;
    visibility: hidden;
}

/* Custom Input & Select Styles */
.custom-input, .custom-select {
    display: block;
    width: 100%;
    border-radius: 0.375rem; /* md */
    border: 1px solid #cbd5e1; /* slate-300 */
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    transition: border-color 0.2s, box-shadow 0.2s;
    font-size: 0.875rem; /* sm */
}
.custom-input:focus, .custom-select:focus {
    outline: none;
    border-color: #4f46e5; /* indigo-600 */
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}
.custom-select {
    padding: 0.5rem 0.75rem;
}
.custom-file-input::-webkit-file-upload-button {
    margin-right: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem; /* md */
    border: 0;
    font-weight: 600; /* semibold */
    background-color: #eef2ff; /* indigo-50 */
    color: #4338ca; /* indigo-700 */
    cursor: pointer;
    transition: background-color 0.2s;
}
.custom-file-input::-webkit-file-upload-button:hover {
    background-color: #e0e7ff; /* indigo-100 */
}


/* Legend Item Styling */
.legend-item {
    transition: all 0.2s ease-in-out;
    border: 1px solid #e2e8f0; /* gray-200 */
}
.legend-item.active {
    box-shadow: 0 0 0 2px #4f46e5; /* indigo-600 */
    border-color: #4f46e5; /* indigo-600 */
    background-color: #f4f4f5; /* zinc-100 */
}
.color-input {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 2rem;
    height: 2rem;
    border-radius: 0.375rem;
    cursor: pointer;
    border: none;
    padding: 0;
}
.color-input::-webkit-color-swatch {
    border-radius: 0.375rem;
    border: 1px solid #d1d5db; /* gray-300 */
}
.color-input::-moz-color-swatch {
    border-radius: 0.375rem;
    border: 1px solid #d1d5db; /* gray-300 */
}
.threshold-input {
    border: 1px solid transparent;
    border-radius: 0.375rem; /* md */
    padding: 4px 6px;
    background-color: transparent;
    width: 90px;
    transition: background-color 0.2s, border-color 0.2s;
}
.threshold-input:hover, .threshold-input:focus {
    background-color: #ffffff;
    border-color: #cbd5e1; /* slate-300 */
}
.delete-legend-btn {
    background: none;
    border: none;
    color: #94a3b8; /* slate-400 */
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
}
.delete-legend-btn:hover {
    color: #ef4444; /* red-500 */
}

/* Action Buttons */
.actions-container {
    padding-top: 1rem;
    border-top: 1px solid #e2e8f0; /* gray-200 */
}
.btn {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    font-weight: 600; /* semibold */
    padding: 0.625rem 1rem;
    border-radius: 0.5rem; /* lg */
    transition: all 0.2s ease-in-out;
    border: 1px solid transparent;
}
.btn-primary {
    background-color: #4f46e5; /* indigo-600 */
    color: white;
}
.btn-primary:hover {
    background-color: #4338ca; /* indigo-700 */
}
.btn-secondary {
    background-color: #f1f5f9; /* slate-100 */
    color: #334155; /* slate-700 */
    border-color: #cbd5e1; /* slate-300 */
}
.btn-secondary:hover {
    background-color: #e2e8f0; /* slate-200 */
    border-color: #94a3b8; /* slate-400 */
}


/* Canvas & Placeholder */
/* Legend Icons Hover Effect */
canvas {
    cursor: default;
}

canvas.icon-hover {
    cursor: pointer;
}

canvas {
    cursor: crosshair;
}
canvas.selection-mode {
    cursor: default;
}
.canvas-container {
    background-color: #ffffff;
    border-radius: 0.75rem; /* lg */
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    min-height: 500px; /* ensure a minimum height */
    position: relative; /* For positioning the toolbar */
}

/* New Canvas Toolbar Styles */
.canvas-toolbar {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.75rem;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 0.5rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.2s ease-in-out;
}

.canvas-toolbar.visible {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

.canvas-action-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: #f8fafc;
    color: #475569;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.canvas-action-btn:hover {
    background-color: #f1f5f9;
    border-color: #cbd5e1;
    color: #1e293b;
}

.canvas-action-btn svg {
    width: 1.125rem; /* 18px */
    height: 1.125rem; /* 18px */
}

#placeholder {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#auto-gen-status {
    color: #4f46e5; /* indigo-600 */
}

/* Custom Scrollbar */
.controls-accordion::-webkit-scrollbar {
  width: 6px;
}
.controls-accordion::-webkit-scrollbar-track {
  background: #f1f5f9; /* slate-100 */
  border-radius: 6px;
}
.controls-accordion::-webkit-scrollbar-thumb {
  background: #cbd5e1; /* slate-300 */
  border-radius: 6px;
}
.controls-accordion::-webkit-scrollbar-thumb:hover {
  background: #94a3b8; /* slate-400 */
}