/* Region Selector Stylesheet */

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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #16a34a;
    --danger-color: #dc2626;
    --warning-color: #ea580c;
    --bg-color: #f8fafc;
    --panel-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-color: #1e293b;
    --text-light: #64748b;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
}

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

.selector-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background-color: var(--panel-bg);
}

/* Header */
.selector-header {
    position: relative;
    padding: 20px 25px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    box-shadow: var(--shadow);
    z-index: 10;
}

.selector-header h1 {
    font-size: 24px;
    margin-bottom: 5px;
    font-weight: 700;
}

.selector-header p {
    font-size: 13px;
    opacity: 0.9;
    margin-bottom: 0;
}

.close-button {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.close-button:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

/* Content Layout */
.selector-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Control Panel */
.control-panel {
    width: 320px;
    background-color: var(--panel-bg);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    padding: 20px;
}

.control-panel h3 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--text-color);
    font-weight: 600;
}

.control-panel h4 {
    font-size: 13px;
    margin-bottom: 10px;
    color: var(--text-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.control-group {
    margin-bottom: 20px;
}

.control-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-color);
}

.control-group small {
    display: block;
    font-size: 11px;
    color: var(--text-light);
    margin-top: 5px;
    font-style: italic;
}

/* Input Range */
input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.2s ease;
}

/* Buttons */
.btn {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    width: 100%;
}

.btn-primary:hover:not(:disabled) {
    background-color: #1d4ed8;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
    width: 100%;
}

.btn-secondary:hover:not(:disabled) {
    background-color: #475569;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
    border-color: var(--success-color);
    width: 100%;
    font-weight: 600;
}

.btn-success:hover:not(:disabled) {
    background-color: #15803d;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
    border-color: var(--danger-color);
    width: 100%;
    font-weight: 600;
}

.btn-danger:hover:not(:disabled) {
    background-color: #b91c1c;
}

.btn-small {
    width: 100%;
    padding: 6px 10px;
    font-size: 12px;
}

.zoom-buttons {
    display: flex;
    gap: 8px;
}

.zoom-buttons .btn {
    flex: 1;
}

/* Radio Group */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.radio-group label {
    display: flex;
    align-items: center;
    font-weight: 400;
    margin-bottom: 0;
    cursor: pointer;
}

.radio-group input[type="radio"] {
    margin-right: 8px;
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
}

/* Zoom Display */
.zoom-display {
    background-color: #f1f5f9;
    padding: 10px;
    border-radius: 4px;
    text-align: center;
    margin: 10px 0;
    font-weight: 600;
    color: var(--primary-color);
}

/* Info Boxes */
.info-box {
    background-color: #f9fafb;
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 6px;
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 12px;
    color: var(--text-color);
    line-height: 1.5;
    overflow-x: auto;
}

.info-box p {
    margin: 0;
}

.info-box-secondary {
    background-color: #eff6ff;
    border-color: #bfdbfe;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.action-buttons .btn {
    padding: 10px;
    font-size: 13px;
    font-weight: 600;
}

/* HR */
hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 15px 0;
}

/* Canvas Area */
.canvas-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(45deg, #f0f4f8 25%, transparent 25%, transparent 75%, #f0f4f8 75%, #f0f4f8),
                linear-gradient(45deg, #f0f4f8 25%, transparent 25%, transparent 75%, #f0f4f8 75%, #f0f4f8);
    background-size: 40px 40px;
    background-position: 0 0, 20px 20px;
    background-color: #fafbfc;
    overflow: hidden;
    position: relative;
}

#canvas-container {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    max-width: 90%;
    max-height: 90%;
}

#background-image {
    display: block;
    max-width: 100%;
    max-height: 100%;
    user-select: none;
    -webkit-user-select: none;
    -webkit-user-drag: none;
}

/* Rectangle */
.rectangle {
    position: absolute;
    background-color: transparent;
    cursor: move;
    transform-origin: center center;
    transition: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rectangle.border-inside {
    border: 3px solid #2563eb;
    box-shadow: inset 0 0 0 2px rgba(37, 99, 235, 0.3);
}

.rectangle.border-outside {
    outline: 3px solid #2563eb;
    outline-offset: -3px;
}

/* Resize Handles */
.resize-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    background-color: #2563eb;
    border: 2px solid white;
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.rectangle:hover .resize-handle,
.rectangle.resizing .resize-handle {
    opacity: 1;
}

.rectangle:hover {
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.2);
}

/* Handle positions */
.resize-handle.top-left {
    top: -6px;
    left: -6px;
    cursor: nwse-resize;
}

.resize-handle.top-right {
    top: -6px;
    right: -6px;
    cursor: nesw-resize;
}

.resize-handle.bottom-left {
    bottom: -6px;
    left: -6px;
    cursor: nesw-resize;
}

.resize-handle.bottom-right {
    bottom: -6px;
    right: -6px;
    cursor: nwse-resize;
}

/* Scrollbar Styling */
.control-panel::-webkit-scrollbar {
    width: 8px;
}

.control-panel::-webkit-scrollbar-track {
    background: transparent;
}

.control-panel::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.control-panel::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .control-panel {
        width: 280px;
    }
}

@media (max-width: 768px) {
    .selector-content {
        flex-direction: column;
    }

    .control-panel {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        max-height: 40vh;
    }

    .canvas-area {
        flex: 1;
        min-height: 60vh;
    }

    .control-panel h3 {
        margin-top: 10px;
    }
}

/* Accessibility */
.btn:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Utility */
.hidden {
    display: none !important;
}