/* ========================================
   DESIGN SYSTEM & VARIABLES - TESLA THEME
   ======================================== */
:root {
    /* Tesla Primary Colors */
    --color-primary: #E82127;
    --color-primary-dark: #C41E24;
    --color-primary-light: #FF3A40;
    --color-secondary: #E82127;
    --color-accent: #FFA500;
    --color-accent-hot: #E82127;
    --color-accent-cool: #00D563;
    --color-success: #00D563;
    --color-info: #3E6AE1;
    --color-warning: #FFA500;

    /* Background & Surface - Tesla Dark */
    --color-bg-primary: #000000;
    --color-bg-secondary: #181818;
    --color-bg-tertiary: #222222;
    --color-surface: rgba(57, 57, 57, 0.3);
    --color-surface-hover: rgba(57, 57, 57, 0.5);
    --color-border: #2B2B2B;

    /* Text - Tesla */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B3B3B3;
    --color-text-muted: #717171;

    /* Glassmorphism - Tesla Style */
    --glass-bg: rgba(24, 24, 24, 0.85);
    --glass-border: rgba(232, 33, 39, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.6);

    /* Shadows - Enhanced for dark theme */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
    --shadow-red-glow: 0 0 20px rgba(232, 33, 39, 0.4);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 50%, var(--color-bg-tertiary) 100%);
    color: var(--color-text-primary);
    min-height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   LAYOUT
   ======================================== */
.app-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    overflow: hidden;
}

/* ========================================
   HEADER
   ======================================== */
.header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.header-title {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 10px rgba(232, 33, 39, 0.6));
}

.header-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.header-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #E82127, #FF3A40);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

/* ========================================
   CONTROLS PANEL
   ======================================== */
.controls-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    overflow-y: auto;
    box-shadow: var(--glass-shadow);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.control-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.control-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.control-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.control-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.label-icon {
    font-size: 1.125rem;
}

/* Form Controls */
.control-select,
.control-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.control-select:hover,
.control-input:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.25);
}

.control-select:focus,
.control-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.control-select option {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

/* Search Results Counter */
.search-results {
    margin-top: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    animation: fadeIn 0.3s ease;
}


/* Toggle Controls */
.toggle-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background 0.2s ease;
}

.toggle-label:hover {
    background: rgba(255, 255, 255, 0.05);
}

.toggle-label input[type="checkbox"] {
    appearance: none;
    width: 2.5rem;
    height: 1.25rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    position: relative;
    cursor: pointer;
    transition: background 0.3s ease;
}

.toggle-label input[type="checkbox"]:checked {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}

.toggle-label input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 1rem;
    height: 1rem;
    background: white;
    border-radius: 50%;
    top: 0.125rem;
    left: 0.125rem;
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.toggle-label input[type="checkbox"]:checked::before {
    transform: translateX(1.25rem);
}

.toggle-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ========================================
   LEGEND
   ======================================== */
.legend {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.legend-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-style: italic;
    margin-bottom: var(--spacing-xs);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    position: relative;
}

.legend-item.clickable {
    cursor: pointer;
    user-select: none;
}

.legend-item.clickable:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(2px);
}

.legend-item.clickable:active {
    transform: scale(0.98);
}

/* Checkbox styling */
.legend-checkbox {
    appearance: none;
    width: 1.125rem;
    height: 1.125rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.legend-checkbox:checked {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-color: var(--color-primary);
}

.legend-checkbox:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
}

/* Dimmed state when unchecked */
.legend-item:has(.legend-checkbox:not(:checked)) {
    opacity: 0.4;
}

.legend-item:has(.legend-checkbox:not(:checked)) .legend-color {
    filter: grayscale(0.5);
}

.legend-color {
    width: 2rem;
    height: 1.25rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    transition: filter 0.2s ease;
}

.legend-label {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    flex: 1;
    line-height: 1.4;
}

.legend-label small {
    display: block;
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    font-weight: 400;
    margin-top: 2px;
}

/* Bubble Size Legend */
.legend-bubbles {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.bubble-example {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.bubble {
    background: rgba(99, 102, 241, 0.6);
    border: 2px solid #fff;
    border-radius: 50%;
    flex-shrink: 0;
}

.legend-note {
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-style: italic;
    text-align: center;
}

/* ========================================
   STATION INFO PANEL
   ======================================== */
.station-info {
    background: rgba(255, 255, 255, 0.03);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.station-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.station-detail {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    justify-content: space-between;
}

.station-detail strong {
    color: var(--color-text-primary);
}

/* ========================================
   MAP CONTAINER
   ======================================== */
.map-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
}

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

/* Leaflet Custom Styles */
.leaflet-container {
    background: #000000;
    font-family: var(--font-family);
}

.leaflet-popup-content-wrapper {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    color: var(--color-text-primary);
}

.leaflet-popup-tip {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
}

.leaflet-popup-content {
    margin: var(--spacing-md);
    font-size: 0.875rem;
}

.leaflet-popup-content h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.leaflet-popup-content p {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-secondary);
}

/* ========================================
   LOADING OVERLAY
   ======================================== */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-text {
    margin-top: var(--spacing-lg);
    font-size: 1rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ========================================
   ANIMATIONS & TRANSITIONS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.control-section {
    animation: fadeIn 0.5s ease forwards;
}

.control-section:nth-child(2) {
    animation-delay: 0.1s;
}

.control-section:nth-child(3) {
    animation-delay: 0.2s;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 280px 1fr;
    }

    .header-stats {
        gap: var(--spacing-md);
    }

    .stat-value {
        font-size: 1.25rem;
    }
}

@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }

    .controls-panel {
        max-height: 300px;
    }

    .header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    .header-stats {
        width: 100%;
        justify-content: space-around;
    }
}

/* ========================================
   AUTHENTICATION UI
   ======================================== */
/* Auth Controls in Header */
.auth-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.auth-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 213, 99, 0.1);
    border: 1px solid rgba(0, 213, 99, 0.3);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-success);
    font-weight: 600;
}

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

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    box-shadow: 0 4px 12px rgba(232, 33, 39, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(232, 33, 39, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Login Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 420px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-header p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Login Form */
.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.form-group input {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: 0.9375rem;
    transition: all 0.3s ease;
}

.form-group input:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.25);
}

.form-group input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(232, 33, 39, 0.2);
}

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

/* Error Message */
.error-message {
    padding: var(--spacing-md);
    background: rgba(232, 33, 39, 0.1);
    border: 1px solid rgba(232, 33, 39, 0.3);
    border-radius: var(--radius-md);
    color: var(--color-accent-hot);
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    animation: shake 0.3s ease;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.form-actions button {
    flex: 1;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-loading::before {
    content: '';
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ========================================
   CUSTOM SCROLLBAR
   ======================================== */
.controls-panel::-webkit-scrollbar {
    width: 8px;
}

.controls-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
}

.controls-panel::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-md);
}

.controls-panel::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    box-shadow: var(--shadow-red-glow);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* Button Disabled State */
.btn-primary:disabled,
.btn-primary.disabled-locked {
    background: var(--color-surface);
    color: var(--color-text-muted);
    cursor: not-allowed;
    border-color: var(--glass-border);
    transform: none;
    box-shadow: none;
}