/* ==========================================================================
   Design System & HSL Tokens
   ========================================================================== */
:root {
    --bg-main: hsl(222, 47%, 9%);
    --bg-sidebar: hsl(222, 47%, 12%);
    --panel-bg: rgba(15, 23, 42, 0.65);
    --card-bg: rgba(30, 41, 59, 0.45);
    --card-bg-hover: rgba(30, 41, 59, 0.7);
    --border-color: rgba(51, 65, 85, 0.5);
    --border-color-focus: hsla(217, 91%, 60%, 0.5);
    
    --primary-color: hsl(217, 91%, 60%);
    --primary-hover: hsl(217, 91%, 50%);
    --primary-glow: hsla(217, 91%, 60%, 0.25);
    
    --secondary-color: hsl(346, 84%, 61%);
    --secondary-hover: hsl(346, 84%, 51%);
    --secondary-glow: hsla(346, 84%, 61%, 0.25);
    
    --text-main: hsl(210, 40%, 98%);
    --text-muted: hsl(215, 20%, 65%);
    --text-inverse: hsl(222, 47%, 9%);
    
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    
    --input-bg: rgba(15, 23, 42, 0.8);
}

/* ==========================================================================
   Themes Configuration
   ========================================================================== */
body.theme-dark {
    --bg-main: hsl(222, 47%, 9%);
    --bg-sidebar: hsl(222, 47%, 12%);
    --panel-bg: rgba(15, 23, 42, 0.65);
    --card-bg: rgba(30, 41, 59, 0.45);
    --card-bg-hover: rgba(30, 41, 59, 0.7);
    --border-color: rgba(51, 65, 85, 0.5);
    --border-color-focus: hsla(217, 91%, 60%, 0.5);
    
    --primary-color: hsl(217, 91%, 60%);
    --primary-hover: hsl(217, 91%, 50%);
    --primary-glow: hsla(217, 91%, 60%, 0.25);
    
    --text-main: hsl(210, 40%, 98%);
    --text-muted: hsl(215, 20%, 65%);
    --text-inverse: hsl(222, 47%, 9%);
    --input-bg: rgba(15, 23, 42, 0.8);
}

body.theme-light {
    --bg-main: hsl(210, 20%, 96%);
    --bg-sidebar: hsl(0, 0%, 100%);
    --panel-bg: rgba(255, 255, 255, 0.85);
    --card-bg: rgba(241, 245, 249, 0.85);
    --card-bg-hover: rgba(226, 232, 240, 0.95);
    --border-color: rgba(203, 213, 225, 0.9);
    --border-color-focus: hsla(217, 91%, 60%, 0.8);
    
    --primary-color: hsl(217, 91%, 45%);
    --primary-hover: hsl(217, 91%, 35%);
    --primary-glow: hsla(217, 91%, 50%, 0.2);
    
    --secondary-color: hsl(346, 84%, 45%);
    --secondary-hover: hsl(346, 84%, 35%);
    --secondary-glow: hsla(346, 84%, 45%, 0.2);
    
    --success-color: #047857;
    --warning-color: #b45309;
    --danger-color: #b91c1c;
    
    --text-main: hsl(222, 47%, 12%);
    --text-muted: hsl(215, 16%, 32%);
    --text-inverse: hsl(210, 40%, 98%);
    --input-bg: rgba(255, 255, 255, 0.95);
}

body.theme-mid {
    --bg-main: hsl(217, 30%, 18%);
    --bg-sidebar: hsl(217, 30%, 22%);
    --panel-bg: rgba(30, 41, 59, 0.75);
    --card-bg: rgba(51, 65, 85, 0.55);
    --card-bg-hover: rgba(51, 65, 85, 0.85);
    --border-color: rgba(148, 163, 184, 0.25);
    --border-color-focus: hsla(217, 91%, 60%, 0.6);
    
    --primary-color: hsl(217, 91%, 65%);
    --primary-hover: hsl(217, 91%, 55%);
    --primary-glow: hsla(217, 91%, 65%, 0.3);
    
    --secondary-color: hsl(346, 84%, 65%);
    --secondary-hover: hsl(346, 84%, 55%);
    --secondary-glow: hsla(346, 84%, 65%, 0.3);
    
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --text-main: hsl(210, 40%, 96%);
    --text-muted: hsl(215, 20%, 75%);
    --text-inverse: hsl(222, 47%, 9%);
    --input-bg: rgba(30, 41, 59, 0.9);
}


/* ==========================================================================
   Global Resets
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow: hidden;
    height: 100dvh;
    width: 100vw;
}

/* ==========================================================================
   App Layout (Sidebar + Map)
   ========================================================================== */
.app-container {
    display: flex;
    height: 100dvh;
    width: 100vw;
    overflow: hidden;
}

/* ==========================================================================
   Sidebar Styles
   ========================================================================== */
.sidebar {
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 420px;
    min-width: 420px;
    flex-shrink: 0;
    overflow: hidden;
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.3);
    z-index: 10;
    transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}

.sidebar.collapsed {
    margin-left: -420px;
    opacity: 0;
    pointer-events: none;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 10px var(--secondary-glow));
    animation: pulseGlow 3s infinite ease-in-out;
}

.sidebar-header h1 {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.subtitle {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.description {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Custom Scrollbar for Sidebar */
.sidebar-content::-webkit-scrollbar {
    width: 5px;
}
.sidebar-content::-webkit-scrollbar-track {
    background: transparent;
}
.sidebar-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}
.sidebar-content::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ==========================================================================
   Common Containers & Cards
   ========================================================================== */
.section-container {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.section-header h2 {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.25px;
}

.badge {
    background: var(--primary-color);
    color: var(--text-inverse);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 20px;
}

/* ==========================================================================
   Observer Card Styles
   ========================================================================== */
.observers-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 12px;
}

.observer-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    position: relative;
    transition: var(--transition-normal);
    animation: slideInCard 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.observer-card:hover {
    border-color: var(--text-muted);
    background: var(--card-bg-hover);
}

/* Ground elevation display style inside cards */
.obs-ground-elevation {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: -4px;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.obs-ground-elevation .elev-val {
    font-weight: 600;
    color: var(--success-color);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-remove-card {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.15rem;
    padding: 0 4px;
    transition: var(--transition-fast);
}

.btn-remove-card:hover {
    color: var(--secondary-color);
    transform: scale(1.1);
}

.form-row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
}

input, select {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: 8px 10px;
    font-family: inherit;
    font-size: 0.95rem;
    width: 100%;
    transition: var(--transition-fast);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.observer-card select, .form-group select {
    font-size: 0.85rem;
}

input.coord-input {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: -0.2px;
}

/* Pick and Geolocation Buttons Row */
.btn-row {
    display: flex;
    gap: 6px;
    margin-bottom: 8px;
}

.btn-mini {
    padding: 6px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    flex: 1;
    transition: var(--transition-fast);
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-mini:hover {
    background: var(--card-bg-hover);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-mini-pick.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-inverse);
    box-shadow: 0 0 8px var(--primary-glow);
}

/* Mode Switch Tabs */
.mode-tabs {
    display: flex;
    background: var(--input-bg);
    border-radius: var(--radius-sm);
    padding: 2px;
    border: 1px solid var(--border-color);
    margin-bottom: 8px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 4px 0;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.tab-btn.active {
    background: var(--primary-color);
    color: var(--text-inverse);
}

.raycast-extra-fields {
    border-top: 1px dashed var(--border-color);
    margin-top: 8px;
    padding-top: 8px;
    animation: fadeIn 0.25s ease-out;
}

.hidden {
    display: none !important;
}

/* ==========================================================================
   Button Styles
   ========================================================================== */
.btn {
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition-normal);
    width: auto;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background: var(--primary-color);
    border: 1px solid var(--primary-color);
    color: var(--text-inverse);
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: var(--card-bg-hover);
    border-color: var(--text-muted);
}

#btnAddObserver {
    border: 1px dashed var(--danger-color) !important;
    color: var(--danger-color) !important;
    background: transparent !important;
}

#btnAddObserver:hover {
    background: rgba(239, 68, 68, 0.1) !important;
    border-color: var(--danger-color) !important;
    color: var(--danger-color) !important;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.2) !important;
}

.btn-outline {
    background: transparent;
    border: 2px dashed var(--border-color);
    color: var(--text-muted);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.action-buttons-group {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 10px;
}

/* ==========================================================================
   Status Banner
   ========================================================================== */
.status-banner {
    padding: 12px 14px;
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    line-height: 1.4;
    text-align: center;
    font-weight: 500;
}

.status-banner.error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid var(--danger-color);
    color: #fca5a5;
}

body.theme-light .status-banner.error {
    background: rgba(239, 68, 68, 0.1);
    color: #991b1b;
}

.status-banner.success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid var(--success-color);
    color: #a7f3d0;
}

body.theme-light .status-banner.success {
    background: rgba(16, 185, 129, 0.1);
    color: #065f46;
}

.status-banner.info {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid var(--primary-color);
    color: #93c5fd;
}

body.theme-light .status-banner.info {
    background: rgba(59, 130, 246, 0.1);
    color: #1e40af;
}

/* ==========================================================================
   Target Calculation Results
   ========================================================================== */
.results-container {
    animation: slideDownIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 20px var(--secondary-glow);
    border-color: var(--secondary-color);
}

.result-coords-card {
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid var(--secondary-color);
    border-radius: var(--radius-md);
    padding: 14px;
    text-align: center;
    margin-bottom: 14px;
}

.result-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 6px;
}

.result-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-shadow: 0 0 10px var(--secondary-glow);
}

.result-elevation {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-main);
    margin-top: 4px;
}

.result-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.result-detail-item {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 6px;
}

.result-detail-item strong {
    color: var(--text-main);
}

/* Share Panel */
.share-panel {
    border-top: 1px dashed var(--border-color);
    padding-top: 14px;
}

.share-panel h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
}

.share-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.share-btn {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    color: var(--text-main);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 8px 10px;
    text-align: center;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.share-btn:hover {
    background: var(--card-bg-hover);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 2px 8px var(--primary-glow);
    transform: translateY(-1px);
}

/* ==========================================================================
   Map wrapper & Layers controls
   ========================================================================== */
.map-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

#map {
    width: 100%;
    height: 100%;
    background: var(--bg-main);
}

/* Map hover coordinate popup */
.map-overlay-coords {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-main);
    backdrop-filter: blur(10px);
    pointer-events: none;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}



/* Layer selector overlay */
.map-layer-overlay {
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 1000;
    display: flex;
    gap: 4px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    padding: 2px;
    border-radius: var(--radius-sm);
    backdrop-filter: blur(6px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.layer-btn {
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 4px 10px;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.layer-btn:hover {
    color: var(--text-main);
}

.layer-btn.active {
    background: var(--primary-color);
    color: var(--text-inverse);
}

/* Map Brightness slider overlay */
.map-brightness-overlay {
    position: absolute;
    top: 55px;
    right: 15px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    backdrop-filter: blur(6px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.brightness-presets {
    display: flex;
    gap: 4px;
    margin-right: 4px;
}

.btn-brightness {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-brightness:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
}

.btn-brightness.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-inverse);
    box-shadow: 0 0 8px var(--primary-glow);
}

.brightness-icon {
    font-size: 0.95rem;
    cursor: default;
    filter: drop-shadow(0 0 4px var(--primary-glow));
}

.map-brightness-overlay input[type="range"] {
    width: 100px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    outline: none;
    border: none;
    padding: 0;
    cursor: pointer;
    -webkit-appearance: none;
}

.map-brightness-overlay input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 0 5px var(--primary-glow);
    transition: background 0.15s ease, transform 0.15s ease;
}

.map-brightness-overlay input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--primary-hover);
    transform: scale(1.2);
}

.brightness-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-main);
    min-width: 35px;
    text-align: right;
}

/* Brightness filter on map tiles */
#map .leaflet-tile {
    filter: brightness(var(--map-brightness, 1.0));
    transition: filter 0.15s ease;
}

/* Custom Leaflet overrides */
.leaflet-popup-content-wrapper {
    background-color: var(--bg-sidebar) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-md) !important;
}

.leaflet-popup-tip {
    background-color: var(--bg-sidebar) !important;
    border-left: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.leaflet-tooltip.distance-map-tooltip {
    background: rgba(15, 23, 42, 0.9) !important;
    border: 1px solid var(--primary-color) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5) !important;
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 0.72rem !important;
    font-weight: 600 !important;
    padding: 3px 6px !important;
    border-radius: var(--radius-sm) !important;
    backdrop-filter: blur(8px) !important;
}

.leaflet-tooltip.distance-map-tooltip::before {
    display: none !important;
}

.leaflet-tooltip.observer-map-label,
.leaflet-tooltip.ruler-map-tooltip {
    background: rgba(15, 23, 42, 0.75) !important;
    border: 1px solid rgba(59, 130, 246, 0.4) !important;
    color: #ffffff !important;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.4) !important;
    font-family: 'Outfit', sans-serif !important;
    font-size: 0.72rem !important;
    font-weight: 600 !important;
    padding: 2px 6px !important;
    border-radius: var(--radius-sm) !important;
    backdrop-filter: blur(8px) !important;
}

.leaflet-tooltip.observer-map-label::before {
    border-top-color: rgba(15, 23, 42, 0.75) !important;
}

.leaflet-tooltip.target-map-label {
    background: rgba(15, 23, 42, 0.75) !important;
    border: 1px solid rgba(239, 68, 68, 0.4) !important;
    color: #ffffff !important;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.4) !important;
    font-family: 'Outfit', sans-serif !important;
    font-size: 0.72rem !important;
    font-weight: 600 !important;
    padding: 2px 6px !important;
    border-radius: var(--radius-sm) !important;
    backdrop-filter: blur(8px) !important;
}

.leaflet-tooltip.target-map-label::before {
    border-top-color: rgba(15, 23, 42, 0.75) !important;
}

.leaflet-tooltip.error-map-label {
    background: rgba(15, 23, 42, 0.75) !important;
    border: 1px solid rgba(245, 158, 11, 0.4) !important;
    color: #ffffff !important;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.4) !important;
    font-family: 'Outfit', sans-serif !important;
    font-size: 0.72rem !important;
    font-weight: 600 !important;
    padding: 2px 6px !important;
    border-radius: var(--radius-sm) !important;
    backdrop-filter: blur(8px) !important;
}

.leaflet-tooltip.error-map-label::before {
    border-top-color: rgba(15, 23, 42, 0.75) !important;
}

.leaflet-tooltip.ruler-map-tooltip::before {
    display: none !important;
}

/* Observer Card share button hover style */
.btn-share-obs {
    transition: var(--transition-fast) !important;
}
.btn-share-obs:hover {
    color: var(--success-color) !important;
    transform: scale(1.15);
}

/* Observer Card favorite button hover style */
.btn-fav-obs {
    transition: var(--transition-fast) !important;
}
.btn-fav-obs:hover {
    color: #fbbf24 !important; /* Premium Gold color for star */
    transform: scale(1.15);
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100dvh;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.modal-card {
    background: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 480px;
    max-width: 90vw;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    animation: modalPop 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--secondary-color);
}

.modal-body {
    padding: 20px;
}

.modal-result-preview {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    margin: 16px 0;
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.modal-result-preview strong {
    color: var(--text-main);
    display: block;
    margin-bottom: 4px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes pulseGlow {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 5px var(--secondary-glow));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 15px var(--secondary-color));
    }
}

@keyframes slideInCard {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDownIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes modalPop {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ==========================================================================
   Responsive & Advanced UI Enhancements
   ========================================================================== */
.sidebar-toggle-btn {
    position: absolute;
    top: 50%;
    left: 10px;
    transform: translateY(-50%);
    z-index: 1001;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    width: 24px;
    height: 60px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-normal);
    font-size: 0.8rem;
    font-weight: bold;
}

.sidebar-toggle-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-inverse);
    box-shadow: 0 0 10px var(--primary-glow);
    transform: translateY(-50%) scale(1.05);
}

/* Favorites styles */
.favorites-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 180px;
    overflow-y: auto;
    margin-top: 8px;
}

.favorites-list::-webkit-scrollbar {
    width: 4px;
}

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

.empty-fav-text {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: center;
    padding: 10px 0;
    font-style: italic;
}

.favorite-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.favorite-item:hover {
    background: var(--card-bg-hover);
    border-color: var(--text-muted);
}

.fav-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    cursor: pointer;
    flex-grow: 1;
}

.fav-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-main);
}

.fav-coords {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--text-muted);
}

.btn-delete-fav {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    padding: 2px;
    transition: var(--transition-fast);
}

.btn-delete-fav:hover {
    color: var(--secondary-color);
    transform: scale(1.1);
}

/* Observer Card dropdown select */
.fav-select-dropdown {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    padding: 6px 8px;
    font-family: inherit;
    font-size: 0.75rem;
    width: 100%;
    cursor: pointer;
    transition: var(--transition-fast);
}

.fav-select-dropdown:focus {
    outline: none;
    border-color: var(--primary-color);
    color: var(--text-main);
}

/* Theme presets inside sidebar */
.theme-presets {
    display: flex;
    gap: 4px;
    background: rgba(15, 23, 42, 0.4);
    padding: 3px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.btn-theme {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.btn-theme:hover {
    color: var(--text-main);
}

.btn-theme.active {
    background: var(--primary-color);
    color: var(--text-inverse);
    box-shadow: 0 0 8px var(--primary-glow);
}

@media (max-width: 900px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        min-width: 100%;
        height: 100%;
        border-right: none;
        border-bottom: none;
        z-index: 2000;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    }

    .sidebar.collapsed {
        transform: translateX(-100%);
        margin-left: 0;
        opacity: 0;
        pointer-events: none;
    }

    .sidebar-toggle-btn {
        z-index: 2001; /* Float above the open full-screen sidebar */
        background: var(--primary-color);
        color: var(--text-inverse);
        border-color: var(--primary-color);
    }

    .map-layer-overlay {
        top: 45px; /* Push below notch */
        right: 15px;
        z-index: 1005;
    }
    .map-brightness-overlay {
        top: 85px; 
        right: 15px;
        z-index: 1005;
    }
}

/* Hover for new custom buttons */
.theme-toggle-btn-inline:hover {
    background: var(--card-bg-hover) !important;
    border-color: var(--primary-color) !important;
    color: #fbbf24 !important;
    box-shadow: 0 0 10px var(--primary-glow) !important;
}

.map-geo-leaflet-btn:hover {
    background-color: var(--card-bg-hover) !important;
    border-color: var(--primary-color) !important;
    color: var(--primary-hover) !important;
    box-shadow: 0 0 10px var(--primary-glow) !important;
}

/* ==========================================================================
   Estimated Area Preview Panel Styles
   ========================================================================== */
.area-preview-panel {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    margin-bottom: 14px;
    backdrop-filter: blur(10px);
    transition: var(--transition-normal);
}

.area-preview-panel:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: var(--card-bg-hover);
}

.area-toggle-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Elegant iOS Switch Style Toggle */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider-round {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #475569;
    border-radius: 24px;
    transition: var(--transition-normal);
}

.slider-round:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    border-radius: 50%;
    transition: var(--transition-normal);
}

.toggle-switch input:checked + .slider-round {
    background-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.3);
}

.toggle-switch input:checked + .slider-round:before {
    transform: translateX(22px);
}

.toggle-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
}

/* Slider Container with Smooth Expand animation */
.area-slider-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 12px;
    border-top: 1px dashed var(--border-color);
    padding-top: 12px;
    animation: slideDownIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.area-field-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.area-field-row label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
}

.area-radius-input {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--secondary-color);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 2px 6px;
    width: 85px;
    text-align: right;
    transition: var(--transition-fast);
}

.area-radius-input:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 8px var(--secondary-glow);
}

/* Premium range slider */
input[type="range"]#rangeAreaRadius,
input[type="range"][id*="AzimuthSlider"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 6px;
    background: var(--input-bg);
    margin: 4px 0;
}

input[type="range"]#rangeAreaRadius::-webkit-slider-thumb,
input[type="range"][id*="AzimuthSlider"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--secondary-color);
    cursor: pointer;
    box-shadow: 0 0 8px var(--secondary-glow);
    transition: transform 0.1s;
}

input[type="range"]#rangeAreaRadius::-webkit-slider-thumb:hover,
input[type="range"][id*="AzimuthSlider"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]#rangeAreaRadius::-moz-range-thumb,
input[type="range"][id*="AzimuthSlider"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--secondary-color);
    cursor: pointer;
    box-shadow: 0 0 8px var(--secondary-glow);
    border: none;
    transition: transform 0.1s;
}

input[type="range"]#rangeAreaRadius::-moz-range-thumb:hover,
input[type="range"][id*="AzimuthSlider"]::-moz-range-thumb:hover {
    transform: scale(1.2);
}

/* Stats Cards Grid */
.area-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 4px;
}

.area-stat-box {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: var(--transition-fast);
}

.area-stat-box:hover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.05);
}

.stat-unit {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--success-color);
    text-shadow: 0 0 4px rgba(16, 185, 129, 0.2);
}



/* Pull to refresh */
.ptr-indicator { position: absolute; top: -50px; left: 0; right: 0; height: 50px; display: flex; justify-content: center; align-items: center; z-index: 1000; transition: transform 0.2s ease-out; }
.ptr-spinner { width: 30px; height: 30px; animation: rotate 2s linear infinite; }
.ptr-spinner .path { stroke: var(--primary-color); stroke-linecap: round; animation: dash 1.5s ease-in-out infinite; }
@keyframes rotate { 100% { transform: rotate(360deg); } }
@keyframes dash { 0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; } 50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; } 100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; } }

.locked-obs { background: rgba(0, 0, 0, 0.2) !important; border-color: var(--success-color) !important; opacity: 0.8; }
.locked-obs input, .locked-obs select { background: transparent !important; color: var(--text-muted) !important; }
.locked-obs .card-title { color: var(--text-muted) !important; }