/** 
 * style.css
 * Premium & Modern Design for Heatmap App
 */

:root {
    --bg-color: #f8fafc;
    --panel-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    width: 100%;
    height: 100%;
}

/* Sidebar */
.sidebar {
    width: 300px;
    background-color: var(--panel-bg);
    border-right: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    padding: 24px;
    z-index: 10;
    overflow-y: auto;
}

.sidebar header h1 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.control-group {
    margin-bottom: 2rem;
}

.control-group h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

/* Toggle Buttons */
.toggle-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toggle-buttons button {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 0.875rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.toggle-buttons button:hover {
    background: var(--bg-color);
}

.toggle-buttons button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

/* Alert Settings */
.alert-settings label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    margin-bottom: 12px;
}

.alert-settings input {
    width: 60px;
    padding: 6px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: none;
    text-align: center;
}

/* Palette */
.palette {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 1rem;
}

.palette-item {
    padding: 12px;
    background: var(--bg-color);
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    cursor: grab;
    user-select: none;
    font-size: 0.875rem;
    transition: transform 0.2s ease;
}

.palette-item:active {
    cursor: grabbing;
    transform: scale(0.98);
}

.danger-btn {
    width: 100%;
    padding: 10px;
    background: transparent;
    border: 1px solid #ef4444;
    color: #ef4444;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.danger-btn:hover {
    background: #fef2f2;
}

/* Workspace */
.workspace {
    flex: 1;
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    background: #e2e8f0;
    overflow: auto;
    padding: 24px;
}

.drop-zone {
    width: 80%;
    height: 80%;
    border: 2px dashed #94a3b8;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background: var(--panel-bg);
    transition: all 0.2s;
    text-align: center;
    padding: 2rem;
    margin: auto;
}

.drop-zone.dragover {
    background: #f1f5f9;
    border-color: var(--primary-color);
}

.drop-zone p {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

.drop-zone button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
    box-shadow: var(--shadow-sm);
}

.drop-zone button:hover {
    background: var(--primary-hover);
}

.hidden {
    display: none !important;
}

.map-container {
    position: relative;
    background: var(--panel-bg);
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    margin: auto;
    width: 100%;
    max-width: 95%;
    max-height: 95%;
}

#floorplan-layer {
    display: block;
    width: 100%;
    height: 100%;
}

#heatmap-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none; /* Let clicks pass through to icons/canvas */
}

/* Placed Icons */
.placed-icon {
    position: absolute;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    cursor: move;
    z-index: 20;
    user-select: none;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

/* Modal */
.modal {
    margin: auto;
    padding: 24px;
    border: none;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    background: var(--panel-bg);
    min-width: 300px;
}
.modal::backdrop {
    background: rgba(0,0,0,0.5);
}
.modal h3 { margin-bottom: 12px; color: var(--text-primary); }
.modal p { margin-bottom: 12px; font-size: 0.875rem; color: var(--text-secondary); }
.modal select { width: 100%; padding: 8px; margin-bottom: 24px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 1rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; }
.modal-actions button { padding: 8px 16px; border: 1px solid var(--border-color); border-radius: 4px; cursor: pointer; background: transparent; font-size: 0.875rem; }
.modal-actions .primary-btn { background: var(--primary-color); color: white; border-color: var(--primary-color); }
.modal-actions .primary-btn:hover { background: var(--primary-hover); }

/* Floating Chart Button */
.floating-btn {
    position: absolute;
    bottom: 24px;
    right: 24px;
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 50;
    transition: transform 0.2s, background 0.2s;
}
.floating-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

/* Large Modal for Chart */
.large-modal { width: 80%; max-width: 900px; height: 75%; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; border-bottom: 1px solid var(--border-color); padding-bottom: 12px; }
.modal-header h3 { margin: 0; color: var(--text-primary); }
.close-btn { background: transparent; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-secondary); }
.chart-container { position: relative; height: calc(100% - 60px); width: 100%; }

/* Value Badge on Icon */
.icon-value {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    padding: 2px 6px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    pointer-events: none;
    box-shadow: var(--shadow-sm);
    margin-top: 4px;
}

/* Tooltip */
.tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    pointer-events: none;
    z-index: 100;
    transform: translate(-50%, -100%);
    margin-top: -10px;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transition: opacity 0.2s;
}

.tooltip.visible {
    opacity: 1;
}

.tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: rgba(0, 0, 0, 0.8) transparent transparent transparent;
}