/* Base styles */
:root {
    /* Light theme (default) */
    --primary-color: #0a84ff;
    --secondary-color: #30d158;
    --warning-color: #ffd60a;
    --caution-color: #ff9f0a;
    --danger-color: #ff453a;
    --background-color: #f5f5f7;
    --card-color: #ffffff;
    --text-color: #1d1d1f;
    --text-secondary: #86868b;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    --border-radius: 14px;
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --bg-secondary: rgba(0, 0, 0, 0.05);
    --border-color: rgba(0, 0, 0, 0.1);
    --form-bg: rgba(0, 0, 0, 0.03);
    --hover-bg: rgba(0, 0, 0, 0.1);
    --is-dark-theme: false;
}

/* Dark theme */
.dark-theme {
    --background-color: #1c1c1e;
    --card-color: #2c2c2e;
    --text-color: #ffffff;
    --text-secondary: #aeaeb2;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    --bg-secondary: rgba(255, 255, 255, 0.08);
    --border-color: rgba(255, 255, 255, 0.1);
    --form-bg: rgba(255, 255, 255, 0.05);
    --hover-bg: rgba(255, 255, 255, 0.15);
    --warning-color: #d9ba0a;
    --caution-color: #d98809;
    --danger-color: #d93b32;
    --is-dark-theme: true;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding: 0 16px;
    transition: background-color 0.3s ease;
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    background-image: 
        linear-gradient(135deg, 
            var(--background-color), 
            color-mix(in srgb, var(--background-color), var(--primary-color) 10%)
        ),
        radial-gradient(circle at 50% 50%, 
            color-mix(in srgb, var(--background-color), white 20%) 0%, 
            color-mix(in srgb, var(--background-color), transparent 20%) 60%
        );
    background-attachment: fixed;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--card-color);
    box-shadow: var(--shadow);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    fill: var(--primary-color);
}

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    letter-spacing: -0.5px;
}

h1 {
    font-size: 2.8rem;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-transform: none;
    letter-spacing: -1px;
}

h1::after {
    content: "™";
    font-size: 1rem;
    vertical-align: super;
    margin-left: 3px;
    opacity: 0.7;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--text-color);
}

h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 400;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 24px;
}

/* City Selection */
.city-selection {
    margin: 0 auto 32px;
    max-width: 500px;
    animation: fadeIn 0.8s ease-out forwards;
    animation-delay: 0.1s;
}

.input-group {
    display: flex;
    box-shadow: var(--shadow);
    border-radius: 24px;
    overflow: hidden;
    margin-bottom: 8px;
    background-color: var(--card-color);
}

#city-input {
    flex: 1;
    border: none;
    padding: 12px 16px;
    font-size: 16px;
    font-family: inherit;
    outline: none;
    background-color: var(--card-color);
    color: var(--text-color);
}

.search-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0 20px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.search-button:hover {
    background: #0071e3;
}

#current-location {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

#location-name {
    font-weight: 500;
    color: var(--primary-color);
}

/* Integrated Timeline */
.bike-timeline {
    margin: 40px 0;
    background: var(--card-color);
    padding: 30px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.bike-timeline:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* Timeline header with time selector */
.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.timeline-header h2 {
    margin-bottom: 0;
}

.time-selector {
    display: flex;
    align-items: center;
    gap: 10px;
}

.time-selector label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

#time-select {
    background-color: var(--form-bg);
    border: 1px solid var(--border-color);
    padding: 8px 10px;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-color);
}

#time-select:hover, #time-select:focus {
    background-color: var(--hover-bg);
    border-color: var(--border-color);
}

.timeline-container {
    display: flex;
    overflow-x: auto;
    padding: 20px 10px;
    gap: 30px;
    align-items: flex-start;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) transparent;
}

.timeline-container::-webkit-scrollbar {
    height: 6px;
}

.timeline-container::-webkit-scrollbar-track {
    background: transparent;
}

.timeline-container::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 10px;
}

.today-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 220px;
    padding-right: 30px;
    border-right: 2px dashed var(--border-color);
    position: relative;
    flex-shrink: 0;
}

.day-label {
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 1.1rem;
    color: var(--primary-color);
    position: relative;
}

.day-label::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: var(--primary-color);
}

.time-indicator {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 5px 10px;
    background: var(--bg-secondary);
    border-radius: 20px;
    transition: var(--transition);
}

.forecast-days {
    display: flex;
    gap: 25px;
    align-items: flex-start;
}

.timeline-controls {
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

/* Meter Circles */
.meter-circle {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: var(--card-color);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}

.meter-circle::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.meter-circle:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.percentage {
    font-size: 3.2rem;
    font-weight: 700;
    color: var(--primary-color);
    transition: var(--transition);
}

.rating {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* Weather factors */
.weather-factors {
    margin: 40px 0;
}

.factors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.factor-card {
    background: var(--card-color);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.factor-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.factor-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.factor-value {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.factor-detail {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Recommendation */
.recommendation {
    background: var(--card-color);
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin: 40px 0;
    transition: var(--transition);
}

.recommendation:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* Weather Details */
.weather-details {
    background: var(--card-color);
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin: 40px 0;
    transition: var(--transition);
}

.weather-details:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.details-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.detail-item {
    padding: 8px 0;
}

.detail-label {
    font-weight: 500;
    margin-right: 8px;
    color: var(--text-secondary);
}

/* Tabs */
.tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 10px;
    gap: 8px;
}

.tab-btn {
    background: var(--bg-secondary);
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.tab-btn:hover {
    background: var(--hover-bg);
}

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

.loading-forecast {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
    width: 100%;
}

/* Forecast day */
.forecast-day {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 140px;
    flex-shrink: 0;
    animation: fadeIn 0.5s ease-out forwards;
}

.forecast-date {
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 0.9rem;
    text-align: center;
}

/* Forecast Meter Circle */
.forecast-meter-circle {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    background: var(--card-color);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
    margin-bottom: 15px;
}

.forecast-meter-circle::before {
    content: '';
    position: absolute;
    top: 4px;
    left: 4px;
    right: 4px;
    bottom: 4px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.forecast-meter-circle:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.forecast-percentage {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.forecast-rating {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-top: 5px;
}

.forecast-details {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 12px;
    text-align: center;
    width: 100%;
}

.forecast-icon {
    margin: 5px 0;
}

.forecast-temp {
    font-size: 1.2rem;
    font-weight: 500;
    margin: 5px 0;
}

.forecast-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 5px;
}

.forecast-minmax {
    display: flex;
    justify-content: space-between;
    margin-top: 5px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Footer */
footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 60px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

#data-source {
    font-style: italic;
}

.refresh-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.refresh-button:hover {
    background: #0071e3;
    transform: scale(1.05);
}

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

.container > * {
    animation: fadeIn 0.8s ease-out forwards;
}

.factor-card {
    animation: fadeIn 0.8s ease-out forwards;
    animation-delay: calc(var(--i, 0) * 0.1s);
}

/* Responsive design */
@media (max-width: 768px) {
    .factors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .details-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .today-container {
        min-width: 180px;
        padding-right: 20px;
    }
    
    .meter-circle {
        width: 160px;
        height: 160px;
    }
    
    .percentage {
        font-size: 2.5rem;
    }
    
    .timeline-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .time-selector {
        width: 100%;
    }
    
    #time-select {
        flex: 1;
    }
    
    footer {
        justify-content: center;
        text-align: center;
    }
    
    .tabs {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    
    .factors-grid {
        grid-template-columns: 1fr;
    }
    
    .details-container {
        grid-template-columns: 1fr;
    }
    
    .today-container {
        min-width: 150px;
        padding-right: 15px;
    }
    
    .meter-circle {
        width: 140px;
        height: 140px;
    }
    
    .percentage {
        font-size: 2.2rem;
    }
    
    .forecast-meter-circle {
        width: 100px;
        height: 100px;
    }
    
    .forecast-percentage {
        font-size: 1.5rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .search-button {
        padding: 10px;
    }
    
    .forecast-day {
        min-width: 120px;
    }
    
    .timeline-container {
        gap: 15px;
    }
}

/* Day Time Selector */
.day-time-selector {
    margin: 5px 0 15px;
    text-align: center;
    width: 100%;
}

.day-time-select {
    background-color: var(--form-bg);
    border: 1px solid var(--border-color);
    padding: 5px 8px;
    border-radius: 12px;
    font-family: inherit;
    font-size: 0.85rem;
    outline: none;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-color);
    width: 80%;
    text-align: center;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23007CB2%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 10px;
    padding-right: 24px;
}

.day-time-select:hover, .day-time-select:focus {
    background-color: var(--hover-bg);
    border-color: var(--border-color);
}

/* Aesthetic improvements */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.forecast-card {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.forecast-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
}

a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #1d6fa5;
}

/* Enhanced Visual Styling */
.container {
    animation: fadeIn 0.8s ease-out;
}

.factor-card, .recommendation, .weather-details, .bike-timeline, #wind-gauge-container, #route-planner-container, #social-share, #biker-tip, #gear-recommendations {
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.factor-card:hover, .recommendation:hover, .weather-details:hover, .bike-timeline:hover, #wind-gauge-container:hover, #route-planner-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

/* Gradient backgrounds for cards */
.meter-circle, .forecast-meter-circle {
    background: linear-gradient(145deg, var(--card-color), color-mix(in srgb, var(--card-color), var(--text-secondary) 15%));
}

/* Improved button styling */
button {
    position: relative;
    overflow: hidden;
}

button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%, -50%);
    transform-origin: 50% 50%;
}

button:active::after {
    animation: ripple 0.6s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

/* Improved header styling */
h1, h2, h3 {
    position: relative;
    display: inline-block;
}

h2::after, h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), transparent);
    border-radius: 3px;
}

/* Improved input styling */
input, select {
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

input:focus, select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.1);
    outline: none;
}

/* Improved scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0071e3;
}