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

:root {
    --primary-color: #0f172a;
    --secondary-color: #1e293b;
    --accent-color: #10b981;
    --accent-light: #34d399;
    --accent-dark: #059669;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: #334155;
    --card-bg: #1e293b;
    --card-bg-hover: #334155;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --gradient-primary: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--primary-color);
    color: var(--text-primary);
    overflow: auto;
}

/* App Container */
.app-container {
    display: grid;
    grid-template-areas: 
        "header header"
        "sidebar main";
    grid-template-columns: 400px 1fr;
    grid-template-rows: 80px 1fr;
    height: 100vh;
    position: relative;
}

/* Header */
.header {
    grid-area: header;
    background: linear-gradient(135deg, rgb(213, 238, 223) 0.000%, rgb(213, 238, 223) 15.000%, rgba(59, 137, 154, 1.000) 50.000%, rgba(0, 65, 97, 1.000) 75.000%, rgba(0, 1, 22, 1.000) 100.000%);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.75rem;
    font-weight: 700;
    color: #144b53;
    display: flex;
    align-items: center;
    /* gap: 0.75rem; */
}

.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 10px var(--accent-color));
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-icon {
    font-size: 1rem;
}

/* Sidebar */
.sidebar {
    grid-area: sidebar;
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    z-index: 900;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-toggle {
    position: absolute;
    top: 100px;
    left: 400px;
    z-index: 1001;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    padding: 0.5rem;
}

.sidebar.collapsed + .sidebar-toggle {
    left: 0;
    transform: translateX(0);
}

.sidebar-toggle:hover {
    background: var(--card-bg-hover);
    color: var(--accent-color);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 0;
    height: calc(100vh - 100px); 
}

.sidebar-content::-webkit-scrollbar {
    width: 6px;
}

.sidebar-content::-webkit-scrollbar-track {
    background: var(--card-bg);
}

.sidebar-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.sidebar-content::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* Search Section */
.search-section {
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.search-container {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--primary-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.search-container:focus-within {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.search-input {
    flex: 1;
    padding: 1rem;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.875rem;
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    padding: 1rem;
    background: var(--gradient-primary);
    border: none;
    color: white;
    cursor: pointer;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    transition: var(--transition);
}

.search-btn:hover {
    background: var(--accent-dark);
}

.search-icon {
    font-size: 1rem;
}

/* Filter Section */
.filter-section {
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.filter-section h3 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--primary-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
}

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

.filter-btn.active {
    background: var(--gradient-primary);
    border-color: var(--accent-color);
    color: white;
}

.filter-icon {
    font-size: 1rem;
}

/* Locations Section */
.locations-section {
    padding: 2rem;
}

.locations-section h3 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.locations-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.location-card {
    background: var(--primary-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    
}

.location-card:hover {
    background: var(--card-bg-hover);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.location-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.location-card:hover::before {
    opacity: 1;
}

.location-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.location-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.location-category {
    font-size: 0.75rem;
    color: var(--accent-color);
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.location-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.location-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rating-stars {
    color: var(--warning-color);
    font-size: 0.875rem;
}

.rating-text {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Main Content */
.main-content {
    grid-area: main;
    position: relative;
    overflow: hidden;
}

.map-container {
    position: relative;
    height: 100%;
    width: 100%;
}

.sidebar.collapsed + .main-content .map-container {
    width: 100%;
}

.app-container.sidebar-collapsed .main-content {
    grid-column: span 2;
}

.app-container.sidebar-collapsed .sidebar {
    display: none;
}

.map {
    height: 100%;
    width: 100%;
    z-index: 1;
}

/* Map Controls */
.map-controls {
    position: absolute;
    top: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 1000;
}

.map-control-btn {
    width: 48px;
    height: 48px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

.map-control-btn:hover {
    background: var(--card-bg-hover);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* Stats Panel */
.stats-panel {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    display: flex;
    gap: 1rem;
    z-index: 1000;
}

.stat-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
    text-align: center;
    backdrop-filter: blur(10px);
    min-width: 80px;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.25rem;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: var(--transition);
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    max-width: 300px;
    animation: slideIn 0.3s ease-out;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.popup-content {
    background: var(--primary-color);
    padding: 1rem;
}

.popup-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.popup-category {
    font-size: 0.75rem;
    color: var(--accent-color);
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.popup-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.popup-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.popup-actions {
    display: flex;
    gap: 0.5rem;
}

.popup-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--primary-color);
    color: var(--text-primary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 350px 1fr;
    }
}

@media (max-width: 768px) {
    .app-container {
        grid-template-areas: 
            "header"
            "main";
        grid-template-columns: 1fr;
        grid-template-rows: 80px 1fr;
    }
    
    .sidebar {
        position: fixed;
        top: 80px;
        left: 0;
        height: calc(100vh - 80px);
        width: 350px;
        transform: translateX(-100%);
        z-index: 1000;
        box-shadow: var(--shadow-xl);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .header-actions {
        gap: 0.5rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .stats-panel {
        bottom: 1rem;
        left: 1rem;
    }
    
    .map-controls {
        top: 1rem;
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .sidebar {
        width: 100%;
    }
    
    .filter-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-panel {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .stat-item {
        min-width: 60px;
        padding: 0.75rem 1rem;
    }
}
.sidebar.collapsed {
    transform: translateX(-100%);
}

/* Animation classes */
.fade-in {
    animation: fadeIn 0.3s ease-out;
}

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

.slide-in {
    animation: slideInLeft 0.3s ease-out;
}

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

.btn:focus,
.search-input:focus,
.filter-btn:focus,
.map-control-btn:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

@media (prefers-contrast: high) {
    :root {
        --border-color: #64748b;
        --text-secondary: #e2e8f0;
    }
}