/* ========================================
   IoT Community Map - Design Tokens
   ======================================== */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: #16161f;
    --bg-elevated: #1e1e2a;
    
    /* Accent Colors */
    --accent-primary: #00d4aa;
    --accent-secondary: #7c3aed;
    --accent-tertiary: #f59e0b;
    --accent-red: #ef4444;
    --accent-blue: #3b82f6;
    
    /* Text */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-medium: rgba(255, 255, 255, 0.1);
    --border-accent: rgba(0, 212, 170, 0.3);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.15);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 212, 170, 0.08), transparent),
        radial-gradient(ellipse 60% 40% at 100% 50%, rgba(124, 58, 237, 0.05), transparent),
        radial-gradient(circle at 0% 100%, rgba(245, 158, 11, 0.03), transparent);
    pointer-events: none;
    z-index: 0;
}

/* ========================================
   App Container
   ======================================== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ========================================
   Header
   ======================================== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: rgba(18, 18, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: var(--shadow-glow);
}

.logo-text h1 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--text-primary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
}

/* Navigation */
.nav-buttons {
    display: flex;
    gap: var(--space-sm);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-medium);
}

.nav-btn.active {
    background: rgba(0, 212, 170, 0.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

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

/* Stats Pill */
.stats-pill {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.stat-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    font-size: 0.625rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================
   Main Content
   ======================================== */
.main-content {
    flex: 1;
    padding: var(--space-xl);
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

.view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   Map View
   ======================================== */
.map-container {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-lg);
}

#map {
    height: 500px;
    width: 100%;
    background: var(--bg-secondary);
}

.map-controls {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    z-index: 1000;
}

.filter-panel {
    background: rgba(22, 22, 31, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 1px solid var(--border-medium);
    min-width: 220px;
}

.filter-panel h3 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.filter-group {
    margin-bottom: var(--space-md);
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-group label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-item input {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 1px solid var(--border-medium);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    background: var(--bg-tertiary);
}

.checkbox-item input:checked + .checkmark {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.checkbox-item:hover .checkmark {
    border-color: var(--accent-primary);
}

select {
    width: 100%;
    padding: var(--space-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.875rem;
    cursor: pointer;
}

select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

/* Data Sources Panel */
.data-sources-panel {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.data-sources-panel h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.source-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-fast);
}

.source-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-2px);
}

.source-name {
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.source-status {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-primary);
}

.status-dot.error {
    background: var(--accent-red);
}

/* ========================================
   Submit View
   ======================================== */
.form-container {
    max-width: 700px;
    margin: 0 auto;
}

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

.form-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.form-header p {
    color: var(--text-secondary);
}

.sensor-form {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-subtle);
}

.form-section {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-subtle);
}

.form-section:last-of-type {
    border-bottom: none;
    margin-bottom: var(--space-lg);
    padding-bottom: 0;
}

.form-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--accent-primary);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

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

/* Form Actions */
.form-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-top: var(--space-lg);
}

.btn-primary,
.btn-secondary {
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #00b894);
    color: var(--bg-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 212, 170, 0.3);
}

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

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

/* ========================================
   Data View
   ======================================== */
.data-dashboard {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-subtle);
}

.data-header {
    margin-bottom: var(--space-lg);
}

.data-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.data-header p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.data-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: var(--space-md);
}

.data-tab {
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.data-tab:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.data-tab.active {
    color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.1);
}

.data-content {
    min-height: 300px;
}

.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 300px;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.data-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    border: 1px solid var(--border-subtle);
}

.data-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.data-card-title {
    font-weight: 600;
    font-size: 0.9375rem;
}

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

.data-card-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: var(--space-xs);
}

.data-card-unit {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.data-card-details {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-subtle);
}

.data-detail {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* ========================================
   About View
   ======================================== */
.about-container {
    max-width: 1000px;
    margin: 0 auto;
}

.about-hero {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.about-hero h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    background: linear-gradient(90deg, var(--text-primary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-hero p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-subtle);
    text-align: center;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto var(--space-md);
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Pricing */
.about-pricing {
    margin-top: var(--space-2xl);
}

.about-pricing h3 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xl);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.pricing-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--border-subtle);
    text-align: center;
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    border-color: var(--border-accent);
}

.pricing-card.featured {
    border-color: var(--accent-primary);
    background: linear-gradient(180deg, rgba(0, 212, 170, 0.05), transparent);
    transform: scale(1.02);
}

.pricing-card .price {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: var(--space-md);
}

.pricing-card .price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.pricing-card ul {
    list-style: none;
    text-align: left;
}

.pricing-card li {
    padding: var(--space-sm) 0;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
}

.pricing-card li:last-child {
    border-bottom: none;
}

.pricing-card li::before {
    content: '✓ ';
    color: var(--accent-primary);
    font-weight: 600;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--space-lg) var(--space-xl);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.footer-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-note {
    font-size: 0.75rem !important;
    color: var(--text-muted) !important;
    margin-top: var(--space-xs);
}

/* ========================================
   Toast Notifications
   ======================================== */
.toast-container {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    background: var(--bg-elevated);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    max-width: 350px;
}

.toast.success {
    border-color: var(--accent-primary);
}

.toast.error {
    border-color: var(--accent-red);
}

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

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: var(--space-md);
        padding: var(--space-md);
    }
    
    .nav-buttons {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .stats-pill {
        gap: var(--space-md);
    }
    
    .main-content {
        padding: var(--space-md);
    }
    
    #map {
        height: 350px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .data-tabs {
        flex-wrap: wrap;
    }
}