:root {
    --c-bg-page: #f8fafc;
    --c-bg-surface: #ffffff;
    --c-bg-glass: rgba(255, 255, 255, 0.85);
    
    --c-text-main: #0f172a;
    --c-text-muted: #64748b;
    --c-border: #e2e8f0;
    
    --c-brand: #2563eb;
    --c-brand-hover: #1d4ed8;
    
    /* Semantic Status Colors */
    --c-green: #10b981;
    --c-green-light: #d1fae5;
    --c-red: #ef4444;
    --c-red-light: #fee2e2;
    --c-orange: #f59e0b;
    --c-orange-light: #fef3c7;
    --c-blue: #3b82f6;
    --c-blue-light: #dbeafe;
    --c-neutral: #94a3b8;
    --c-neutral-light: #f1f5f9;

    --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 25px -5px rgba(0,0,0,0.15);
    --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.25);
    
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    
    --trans-fast: 150ms ease;
    --trans-smooth: 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Reset & Utilities */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; overflow: hidden; background: var(--c-bg-page); color: var(--c-text-main); }

.hidden { display: none !important; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.block { display: block; }
.text-center { text-align: center; }
.uppercase { text-transform: uppercase; letter-spacing: 0.05em; }
.font-semibold { font-weight: 600; }
.text-xs { font-size: 0.75rem; } .text-sm { font-size: 0.875rem; }
.text-muted { color: var(--c-text-muted); }
.mt-sm { margin-top: 8px; } .mt-md { margin-top: 16px; } .mt-lg { margin-top: 24px; } .mt-xl { margin-top: 32px; }
.mb-md { margin-bottom: 16px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.glass-effect { background: var(--c-bg-glass); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.4); }

.safe-area-bottom { padding-bottom: env(safe-area-inset-bottom); }

/* App Layout & Map */
.app-layout { position: relative; height: 100vh; width: 100vw; overflow: hidden; }
.map-container { position: absolute; inset: 0; z-index: 1; background: #e2e8f0; }
.map-view { width: 100%; height: 100%; }

/* Live GPS Blue Dot (Leaflet Custom Icon) */
.user-dot-container { position: relative; display: flex; justify-content: center; align-items: center; }
.user-dot { width: 16px; height: 16px; background-color: var(--c-brand); border: 3px solid white; border-radius: 50%; box-shadow: 0 2px 6px rgba(0,0,0,0.3); z-index: 2; position: relative; }
.user-accuracy-ring { position: absolute; background-color: rgba(37, 99, 235, 0.15); border: 1px solid rgba(37, 99, 235, 0.4); border-radius: 50%; top: 50%; left: 50%; transform: translate(-50%, -50%); pointer-events: none; }

/* Custom Status Map Markers */
.marker-wrapper { display: flex; justify-content: center; align-items: center; position: relative; }
.marker-core { width: 20px; height: 20px; border-radius: 50%; border: 3px solid white; box-shadow: var(--shadow-md); z-index: 2; transition: transform var(--trans-fast); }
.marker-wrapper:hover .marker-core { transform: scale(1.15); cursor: pointer; }
.status-Available .marker-core { background: var(--c-green); }
.status-Outage .marker-core { background: var(--c-red); }
.status-Voltage .marker-core { background: var(--c-orange); }
.status-Maintenance .marker-core { background: var(--c-blue); }

/* Floating Controls (FABs) */
.map-controls { position: absolute; right: 16px; bottom: calc(env(safe-area-inset-bottom) + 120px); z-index: 50; display: flex; flex-direction: column; gap: 12px; }
.fab { width: 52px; height: 52px; border-radius: 50%; border: none; display: flex; justify-content: center; align-items: center; cursor: pointer; transition: transform 0.2s, background 0.2s; }
.fab:active { transform: scale(0.92); }
.fab svg { width: 24px; height: 24px; }
.btn-glass { background: var(--c-bg-glass); backdrop-filter: blur(8px); color: var(--c-text-main); }
.btn-primary { background: var(--c-brand); color: white; }
.btn-primary:hover { background: var(--c-brand-hover); }

/* Panel / Bottom Sheet (Google Maps Style) */
.panel { position: absolute; bottom: 0; left: 0; width: 100%; background: var(--c-bg-surface); border-radius: var(--radius-xl) var(--radius-xl) 0 0; box-shadow: 0 -4px 30px rgba(0,0,0,0.1); z-index: 100; display: flex; flex-direction: column; will-change: transform; transition: transform var(--trans-smooth); }
.drag-handle-area { width: 100%; height: 28px; display: flex; justify-content: center; align-items: center; cursor: grab; touch-action: none; }
.drag-pill { width: 44px; height: 5px; background: #cbd5e1; border-radius: 4px; }
.panel-content { padding: 0 20px 24px; overflow-y: auto; max-height: calc(85vh - 28px); }

/* Branding Header */
.panel-header { display: flex; justify-content: space-between; align-items: center; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--c-brand); }
.brand-icon { width: 22px; height: 22px; }
.brand-title { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; color: var(--c-text-main); }
.link-parent-company { font-size: 0.8rem; font-weight: 500; color: var(--c-text-muted); text-decoration: none; }
.link-parent-company:hover { color: var(--c-brand); text-decoration: underline; }

/* Universal Search */
.search-module { position: relative; }
.search-input-wrapper { position: relative; display: flex; align-items: center; border-radius: var(--radius-md); transition: box-shadow var(--trans-fast); }
.search-input-wrapper:focus-within { box-shadow: 0 0 0 3px rgba(37,99,235,0.2); }
.search-icon { position: absolute; left: 14px; width: 20px; height: 20px; color: var(--c-text-muted); pointer-events: none; }
.search-input { width: 100%; height: 52px; padding: 0 44px; border: 1px solid var(--c-border); border-radius: var(--radius-md); background: transparent; font-size: 1rem; color: var(--c-text-main); outline: none; }
.search-dropdown { position: absolute; top: calc(100% + 8px); left: 0; width: 100%; background: var(--c-bg-surface); border: 1px solid var(--c-border); border-radius: var(--radius-md); z-index: 200; max-height: 280px; overflow-y: auto; }
.search-result-item { padding: 14px 16px; cursor: pointer; border-bottom: 1px solid var(--c-bg-page); font-size: 0.95rem; display: flex; align-items: center; gap: 10px; }
.search-result-item:hover { background: var(--c-bg-page); color: var(--c-brand); }
.btn-icon { position: absolute; right: 14px; background: none; border: none; color: var(--c-text-muted); padding: 4px; cursor: pointer; }
.loader-spinner { position: absolute; right: 16px; width: 18px; height: 18px; border: 2px solid var(--c-border); border-top-color: var(--c-brand); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Skeleton Loading UI */
.ui-skeleton { width: 100%; }
.skel-box { background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: 6px; height: 24px; }
.skel-circle { background: #e2e8f0; width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.skel-header { display: flex; justify-content: space-between; margin-bottom: 24px; }
.skel-row { display: flex; gap: 16px; align-items: center; margin-bottom: 20px; }
.w-70 { width: 70%; } .w-60 { width: 60%; } .w-50 { width: 50%; } .w-20 { width: 20%; } .pill { border-radius: 20px; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* Status & Timeline Dashboard */
.status-header { display: flex; justify-content: space-between; align-items: flex-start; padding-bottom: 16px; border-bottom: 1px solid var(--c-border); }
.status-title { font-size: 1.3rem; font-weight: 700; line-height: 1.2; max-width: 65%; }
.status-badge { padding: 6px 12px; border-radius: 20px; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; display: inline-block; }
.badge-neutral { background: var(--c-neutral-light); color: var(--c-neutral); }
.badge-green { background: var(--c-green-light); color: var(--c-green); }
.badge-red { background: var(--c-red-light); color: var(--c-red); }
.badge-orange { background: var(--c-orange-light); color: var(--c-orange); }
.badge-blue { background: var(--c-blue-light); color: var(--c-blue); }

.timeline-list { list-style: none; border-left: 2px solid var(--c-border); margin-left: 6px; padding-left: 20px; display: flex; flex-direction: column; gap: 24px; position: relative; }
.timeline-item { position: relative; animation: slideIn 0.3s ease-out; }
.timeline-dot { position: absolute; left: -27px; top: 4px; width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--c-bg-surface); z-index: 2; box-shadow: var(--shadow-sm); }
.tl-status { font-weight: 700; font-size: 1rem; margin-bottom: 2px; }
.tl-meta { font-size: 0.85rem; color: var(--c-text-muted); display: flex; flex-wrap: wrap; gap: 6px; }

/* Empty & Initial States */
.empty-state, .initial-state { text-align: center; padding: 32px 16px; }
.empty-illustration, .map-icon-placeholder { font-size: 3rem; margin-bottom: 12px; }
.btn-text { background: none; border: none; color: var(--c-text-muted); font-weight: 600; cursor: pointer; padding: 12px; }
.btn-text:hover { color: var(--c-text-main); }

/* Forms & Modal (Dialog) */
.modal { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 92%; max-width: 480px; border: none; border-radius: var(--radius-xl); background: var(--c-bg-surface); padding: 0; outline: none; }
.modal::backdrop { background: rgba(15, 23, 42, 0.6); backdrop-filter: blur(3px); }
.modal-header { padding: 20px 24px; border-bottom: 1px solid var(--c-border); display: flex; justify-content: space-between; align-items: center; }
.modal-header h2 { font-size: 1.25rem; font-weight: 700; }
.btn-close { background: none; border: none; cursor: pointer; color: var(--c-text-muted); padding: 4px; border-radius: 50%; transition: background var(--trans-fast); }
.btn-close:hover { background: var(--c-bg-page); color: var(--c-text-main); }
.modal-body { padding: 24px; max-height: 65vh; overflow-y: auto; }
.form-input { width: 100%; padding: 14px 16px; border: 1px solid var(--c-border); border-radius: var(--radius-md); font-size: 1rem; font-family: inherit; transition: border var(--trans-fast); margin-top: 6px; outline: none; }
.form-input:focus { border-color: var(--c-brand); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }

/* Radio Cards (Status Selection) */
.radio-grid { display: grid; gap: 12px; }
.radio-card input { position: absolute; opacity: 0; }
.radio-content { display: flex; flex-direction: column; padding: 14px 16px; border: 2px solid var(--c-border); border-radius: var(--radius-md); cursor: pointer; transition: all 0.2s; background: var(--c-bg-surface); }
.radio-title { font-weight: 700; font-size: 1.05rem; }
.radio-desc { font-size: 0.85rem; color: var(--c-text-muted); margin-top: 2px; }
.radio-card input:focus-visible + .radio-content { box-shadow: 0 0 0 3px rgba(37,99,235,0.3); }
.radio-card input:checked + .status-green { border-color: var(--c-green); background: var(--c-green-light); }
.radio-card input:checked + .status-red { border-color: var(--c-red); background: var(--c-red-light); }
.radio-card input:checked + .status-orange { border-color: var(--c-orange); background: var(--c-orange-light); }
.radio-card input:checked + .status-blue { border-color: var(--c-blue); background: var(--c-blue-light); }

.modal-footer { padding: 16px 24px; background: var(--c-bg-page); display: flex; justify-content: flex-end; gap: 12px; border-radius: 0 0 var(--radius-xl) var(--radius-xl); border-top: 1px solid var(--c-border); }
.btn-primary { padding: 12px 24px; font-size: 1rem; font-weight: 600; border-radius: var(--radius-md); border: none; background: var(--c-brand); color: white; cursor: pointer; transition: background 0.2s; font-family: inherit; }
.btn-primary:disabled { opacity: 0.7; cursor: not-allowed; }

/* Offline Banner & Toasts */
.offline-banner { background: var(--c-orange); color: white; text-align: center; padding: 10px; font-size: 0.9rem; font-weight: 600; position: absolute; top: 0; width: 100%; z-index: 3000; animation: slideDown 0.3s ease-out; }
.toast-container { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 10px; z-index: 4000; pointer-events: none; width: 90%; max-width: 400px; }
.toast { background: var(--c-bg-surface); border: 1px solid var(--c-border); border-radius: var(--radius-md); padding: 16px; box-shadow: var(--shadow-lg); pointer-events: auto; animation: slideDown 0.3s cubic-bezier(0.2, 0.8, 0.2, 1); display: flex; align-items: center; gap: 12px; }
.toast-success { border-left: 4px solid var(--c-green); }
.toast-error { border-left: 4px solid var(--c-red); }
.toast-info { border-left: 4px solid var(--c-brand); }

/* Animations */
@keyframes slideDown { from { transform: translateY(-100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes slideIn { from { transform: translateX(-20px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Desktop View (Sidebar mode) */
@media (min-width: 900px) {
    .panel { position: absolute; top: 20px; left: 20px; width: 420px; height: calc(100vh - 40px); border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); transform: none !important; }
    .drag-handle-area { display: none; }
    .panel-content { padding: 24px; max-height: 100%; }
    .map-controls { bottom: 32px; right: 32px; }
    .toast-container { top: auto; bottom: 32px; left: 50%; transform: translateX(-50%); }
    .toast { animation: slideUp 0.3s cubic-bezier(0.2, 0.8, 0.2, 1); }
    @keyframes slideUp { from { transform: translateY(100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
}