/* =============================================
   WEATHER APP - MODERN RESPONSIVE DESIGN WITH MONETIZATION
   ============================================= */

:root {
    /* Color Palette */
    --primary: #667eea;
    --primary-dark: #5a6fd6;
    --secondary: #764ba2;
    --accent: #f093fb;
    --background-light: #f0f4ff;
    --text-dark: #1a1a2e;
    --text-light: #ffffff;
    --text-muted: #6b7280;
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.18);
    
    /* Premium Colors */
    --premium-gold: #ffd700;
    --premium-gradient: linear-gradient(135deg, #f6d365 0%, #fda085 50%, #f093fb 100%);
    --premium-dark: #b8860b;
    
    /* Weather Theme Colors */
    --sunny: linear-gradient(135deg, #f6d365 0%, #fda085 100%);
    --cloudy: linear-gradient(135deg, #bdc3c7 0%, #2c3e50 100%);
    --rainy: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --stormy: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    --snowy: linear-gradient(135deg, #e6e9f0 0%, #eef1f5 100%);
    --night: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 50px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--sunny);
    min-height: 100vh;
    color: var(--text-dark);
    transition: background var(--transition-slow);
}

/* Weather App Container */
.weather-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow-x: hidden;
}

/* Animated Background */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.weather-particles {
    width: 100%;
    height: 100%;
    position: relative;
}

/* =============================================
   PREMIUM BANNER
   ============================================= */

.premium-banner {
    background: var(--premium-gradient);
    color: var(--text-dark);
    padding: 0.75rem var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    z-index: 100;
    flex-wrap: wrap;
    text-align: center;
}

.premium-banner.hidden {
    display: none;
}

.btn-premium-small {
    background: var(--text-dark);
    color: var(--text-light);
    border: none;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-premium-small:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* =============================================
   HEADER
   ============================================= */

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    position: relative;
    z-index: 10;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-light);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* Buy Me a Coffee Button */
.bmc-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #FFDD00;
    color: #000000;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(255, 221, 0, 0.3);
}

.bmc-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 221, 0, 0.4);
}

.bmc-icon {
    font-size: 1.1rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Premium Button */
.btn-premium {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--premium-gradient);
    color: var(--text-dark);
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(246, 211, 101, 0.4);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(246, 211, 101, 0.5);
}

.star-icon {
    color: var(--premium-dark);
}

/* Alerts Button */
.btn-alerts {
    position: relative;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-light);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-alerts:hover {
    background: rgba(255, 255, 255, 0.35);
    transform: scale(1.05);
}

.bell-icon {
    font-size: 1.2rem;
}

.premium-badge-small {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--premium-gradient);
    color: var(--text-dark);
    font-size: 0.55rem;
    font-weight: 700;
    padding: 2px 5px;
    border-radius: var(--radius-sm);
}

.btn-settings {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-light);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.3rem;
}

.btn-settings:hover {
    background: rgba(255, 255, 255, 0.35);
    transform: rotate(90deg);
}

/* =============================================
   MODAL STYLES
   ============================================= */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 100%;
    text-align: center;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

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

/* Premium Modal */
.premium-modal-content {
    max-width: 700px;
    padding: var(--spacing-lg) var(--spacing-md);
}

.premium-header {
    margin-bottom: var(--spacing-lg);
}

.premium-icon {
    font-size: 3rem;
    color: var(--premium-gold);
    margin-bottom: var(--spacing-sm);
}

.premium-header h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.premium-tagline {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Plan Comparison */
.plan-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.plan-card {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
}

.plan-card.featured {
    border-color: var(--primary);
    background: linear-gradient(135deg, #f0f4ff 0%, #fff 100%);
    transform: scale(1.02);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 16px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.plan-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
}

.plan-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

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

.plan-features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.plan-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.9rem;
}

.plan-features li::before {
    position: absolute;
    left: 0;
    font-weight: bold;
}

.feature-included::before {
    content: "OK";
    color: #22c55e;
    font-size: 0.7rem;
}

.feature-excluded::before {
    content: "X";
    color: #ef4444;
}

.feature-excluded {
    color: var(--text-muted);
}

.btn-current {
    background: #e9ecef;
    color: var(--text-muted);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    width: 100%;
    cursor: not-allowed;
}

.btn-upgrade {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    width: 100%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-upgrade:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* Stripe Placeholder */
.stripe-placeholder {
    background: #f1f5f9;
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    text-align: left;
}

.stripe-placeholder p {
    margin-bottom: 0.5rem;
}

.stripe-placeholder code {
    display: block;
    background: #1e293b;
    color: #e2e8f0;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    margin-top: var(--spacing-sm);
    white-space: pre-wrap;
    overflow-x: auto;
}

/* Alerts Modal */
.alerts-modal-content {
    max-width: 500px;
}

.premium-only-badge {
    display: inline-block;
    background: var(--premium-gradient);
    color: var(--text-dark);
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.alerts-config {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.alert-option {
    padding: var(--spacing-sm);
    background: #f8f9fa;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

.alert-option label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    cursor: pointer;
}

.alert-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.alert-desc {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: 1.6rem;
    margin-top: 0.25rem;
}

.temp-input {
    width: 80px;
    padding: 0.4rem;
    border: 1px solid #e9ecef;
    border-radius: var(--radius-sm);
    margin-left: 0.5rem;
    font-size: 0.85rem;
}

/* =============================================
   SEARCH SECTION
   ============================================= */

.search-section {
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 10;
}

.search-container {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    background: var(--card-bg);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.search-container input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    outline: none;
    font-size: 1rem;
    font-family: inherit;
    background: transparent;
}

.btn-search {
    background: var(--primary);
    color: var(--text-light);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

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

/* =============================================
   LOADING & ERROR STATES
   ============================================= */

.loading, .error-state {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-light);
    position: relative;
    z-index: 10;
}

.loading.active, .error-state.active {
    display: flex;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--text-light);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

.error-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.btn-primary {
    background: var(--primary);
    color: var(--text-light);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: var(--spacing-sm);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* =============================================
   WEATHER CONTENT
   ============================================= */

.weather-content {
    display: none;
    flex: 1;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    position: relative;
    z-index: 10;
}

.weather-content.active {
    display: block;
}

.current-weather {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--card-shadow);
}

.weather-main {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.location-info h2 {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.location-info p {
    color: var(--text-muted);
}

.weather-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.weather-icon-large {
    width: 120px;
    height: 120px;
}

.temperature-display {
    display: flex;
    align-items: flex-start;
}

.temp-value {
    font-size: 5rem;
    font-weight: 700;
    line-height: 1;
}

.temp-unit {
    font-size: 2rem;
    font-weight: 300;
    margin-top: 0.5rem;
}

.weather-description {
    font-size: 1.25rem;
    color: var(--text-muted);
    text-transform: capitalize;
}

.weather-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-sm);
}

.detail-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: #f8f9fa;
    border-radius: var(--radius-md);
}

.detail-icon {
    font-size: 1.5rem;
}

.detail-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
}

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

/* =============================================
   FORECAST SECTION
   ============================================= */

.forecast-section {
    margin-bottom: var(--spacing-lg);
}

.forecast-section h3 {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.premium-section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.premium-section-header h3 {
    margin-bottom: 0;
}

.forecast-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-sm);
}

.forecast-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-fast);
}

.forecast-card:hover {
    transform: translateY(-5px);
}

.forecast-day {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.forecast-icon {
    width: 60px;
    height: 60px;
}

.forecast-temp {
    font-size: 1.25rem;
    font-weight: 600;
}

.forecast-temp-min {
    color: var(--text-muted);
    font-weight: 400;
}

/* Premium Locked Section */
.premium-locked {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--card-shadow);
}

.lock-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.7;
}

.premium-locked p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

/* =============================================
   FOOTER & ADSENSE
   ============================================= */

.app-footer {
    background: rgba(0, 0, 0, 0.1);
    padding: var(--spacing-md) var(--spacing-lg);
    position: relative;
    z-index: 10;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-content p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-content a {
    color: var(--text-light);
    text-decoration: underline;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: opacity var(--transition-fast);
}

.footer-links a:hover {
    opacity: 0.8;
}

/* AdSense Container */
.adsense-container {
    margin-top: var(--spacing-md);
}

.adsense-container.hidden {
    display: none;
}

.adsense-placeholder {
    background: rgba(255, 255, 255, 0.9);
    border: 2px dashed var(--text-muted);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: left;
    color: var(--text-dark);
}

.adsense-placeholder p {
    margin-bottom: 0.5rem;
}

.adsense-placeholder ol {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.adsense-placeholder li {
    margin-bottom: 0.25rem;
}

.adsense-placeholder a {
    color: var(--primary);
}

.adsense-placeholder code {
    display: block;
    background: #1e293b;
    color: #e2e8f0;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    margin-top: var(--spacing-sm);
    white-space: pre-wrap;
    overflow-x: auto;
}

/* API Link */
.api-link {
    display: inline-block;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

/* =============================================
   RESPONSIVE DESIGN
   ============================================= */

@media (max-width: 768px) {
    .app-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .header-left {
        width: 100%;
        justify-content: space-between;
    }
    
    .bmc-button .bmc-text {
        display: none;
    }
    
    .bmc-button {
        padding: 0.5rem;
    }
    
    .header-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .btn-premium span:not(.star-icon) {
        display: none;
    }
    
    .btn-premium {
        padding: 0.6rem;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        justify-content: center;
    }
    
    .search-section {
        padding: 0 var(--spacing-md);
    }
    
    .weather-content {
        padding: 0 var(--spacing-md) var(--spacing-md);
    }
    
    .current-weather {
        padding: var(--spacing-md);
    }
    
    .temp-value {
        font-size: 3.5rem;
    }
    
    .weather-icon-large {
        width: 80px;
        height: 80px;
    }
    
    .plan-comparison {
        grid-template-columns: 1fr;
    }
    
    .plan-card.featured {
        transform: none;
    }
    
    .premium-banner {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.3rem;
    }
    
    .location-info h2 {
        font-size: 1.5rem;
    }
    
    .temp-value {
        font-size: 3rem;
    }
    
    .weather-details {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .forecast-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Premium User Styles */
body.is-premium .premium-banner,
body.is-premium .adsense-container,
body.is-premium .premium-locked {
    display: none !important;
}

body.is-premium #extendedForecastContainer {
    display: grid !important;
}

body.is-premium .btn-premium,
body.is-premium .premium-only-badge,
body.is-premium .premium-badge-small {
    display: none;
}