:root {
    /* Updated color scheme and font */
    --background-color: #121212;
    --background-color-light: #f5f5f5;
    --header-background: #1e1e1e;
    --header-background-light: #ffffff;
    --card-background: #2e2e2e;
    --card-background-light: #ffffff;
    --link-color: #ffab40;
    --link-color-light: #3498db;
    --link-hover-color: #ff6f00;
    --link-hover-color-light: #2980b9;
    --text-color: #e0e0e0;
    --text-color-light: #333;
    --shadow-color: rgba(0, 0, 0, 0.7);
    --shadow-color-light: rgba(0, 0, 0, 0.2);
    --border-radius: 8px;
    --transition-duration: 0.3s;
    --refresh-color: #ff5722;
    --refresh-color-light: #2ecc71;
    --icon-color: #ffab40;
    --icon-color-light: #3498db;
    --icon-size: 1.2rem;
    --padding: 1rem;
    --separator-color: #444;
    --separator-color-light: #eee;
    --separator-height: 1px;
    --margin: 1rem;
    --font-primary: 'Inter', sans-serif;
    --header-text-color: #ffab40;
    --header-text-color-light: #3498db;
    --card-hover-background: #292929;
    --card-hover-background-light: #ecf0f1;
    --box-shadow-light: 0 2px 4px rgba(0, 0, 0, 0.1);
    --box-shadow-light-light: 0 2px 4px rgba(0, 0, 0, 0.05);
    --box-shadow-dark: 0 4px 8px rgba(0, 0, 0, 0.15);
    --box-shadow-dark-light: 0 4px 8px rgba(0, 0, 0, 0.1);
}

body {
    background: linear-gradient(to bottom, #0f2027, #203a43, #2c5364);
    color: var(--text-color);
    font-family: var(--font-primary);
    line-height: 1.6;
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color var(--transition-duration), color var(--transition-duration);
    font-size: 16px;
}

body.light-mode {
    background: linear-gradient(to bottom, #e0f7fa, #eeeeee);
    color: var(--text-color-light);
    --background-color: var(--background-color-light);
    --header-background: var(--header-background-light);
    --card-background: var(--card-background-light);
    --text-color: var(--text-color-light);
    --header-text-color: var(--header-text-color-light);
    --link-color: var(--link-color-light);
    --link-hover-color: var(--link-hover-color-light);
    --shadow-color: var(--shadow-color-light);
    --refresh-color: var(--refresh-color-light);
    --icon-color: var(--icon-color-light);
    --separator-color: var(--separator-color-light);
    --card-hover-background: var(--card-hover-background-light);
    --box-shadow-light: var(--box-shadow-light-light);
    --box-shadow-dark: var(--box-shadow-dark-light);
}

*, *::before, *::after {
    box-sizing: border-box;
}

h1, h2, h3 {
    font-weight: 600;
    letter-spacing: 0.5px;
    font-family: var(--font-primary);
}

p, small {
    font-weight: 400;
    font-family: var(--font-primary);
}

header {
    background: var(--header-background);
    text-align: center;
    box-shadow: var(--box-shadow-light);
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: var(--separator-height) solid var(--separator-color);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    padding: 1rem var(--padding);
    transition: background-color var(--transition-duration), box-shadow var(--transition-duration);
}

h1 {
    font-size: 1.5rem;
    color: var(--header-text-color);
    margin: 0;
    cursor: pointer;
    position: relative;
    transition: color var(--transition-duration);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

#dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--header-background);
    box-shadow: var(--box-shadow-light);
    border-radius: var(--border-radius);
    margin-top: 0.5rem;
    padding: var(--padding);
    z-index: 100;
    border: 1px solid var(--separator-color);
    transition: all var(--transition-duration);
}

#dropdown-menu label {
    display: flex;
    align-items: center;
    color: var(--refresh-color);
    margin-bottom: 0.5rem;
    font-weight: 500;
    transition: color var(--transition-duration);
}

#dropdown-menu input {
    appearance: none;
    width: 40px;
    height: 20px;
    background: #ccc;
    border-radius: 10px;
    outline: none;
    cursor: pointer;
    position: relative;
    transition: background-color var(--transition-duration);
}

#dropdown-menu input:checked {
    background: var(--link-color);
}

#dropdown-menu input::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: white;
    top: 2px;
    left: 2px;
    transition: transform var(--transition-duration);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

#dropdown-menu input:checked::before {
    transform: translateX(20px);
}

#dropdown-menu span {
    margin-left: 0.5rem;
    font-size: 0.9rem;
    transition: color var(--transition-duration);
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    overflow-anchor: none;
    padding: 0 var(--padding) 1rem var(--padding);
}

#location-container {
    margin: var(--margin) 0;
    text-align: center;
    width: 100%;
    max-width: 600px;
    cursor: pointer;
}

.location-header {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
    transition: color var(--transition-duration);
}

.location-header i {
    margin-left: 0.5rem;
    transition: transform var(--transition-duration);
}

.location-header.expanded i {
    transform: rotate(180deg);
}

.location-details {
    display: none;
    padding: 1rem;
    border-radius: var(--border-radius);
    transition: display var(--transition-duration), opacity var(--transition-duration);
}

.location-details.expanded {
    display: block;
    opacity: 1;
}

#location-search {
    padding: 0.75rem;
    border: 1px solid var(--text-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    flex: 1;
    background-color: var(--card-background);
    color: var(--text-color);
    transition: border-color var(--transition-duration), background-color var(--transition-duration), color var(--transition-duration);
}

#search-button {
    background-color: var(--link-color);
    color: var(--text-color);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background-color var(--transition-duration), color var(--transition-duration), transform var(--transition-duration);
}

#search-button:hover {
    background-color: var(--link-hover-color);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-dark);
}

#weather-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
}

.card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: var(--padding);
    box-shadow: var(--box-shadow-light);
    transition: box-shadow var(--transition-duration), opacity 0.5s, background-color var(--transition-duration), transform var(--transition-duration);
    cursor: pointer;
    overflow: hidden;
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    width: 100%;
    margin-bottom: auto;
}

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

.card:hover {
    box-shadow: var(--box-shadow-dark);
    background-color: var(--card-hover-background);
    transform: translateY(-5px) scale(1.01);
}

.card h2, .card h3 {
    font-size: 1.2rem;
    color: var(--link-color);
    font-weight: 600;
    margin: 0 0 0.5rem 0;
    transition: color var(--transition-duration);
}

.card p {
    font-size: 1rem;
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    display: flex;
    align-items: center;
    transition: color var(--transition-duration);
}

.card p i {
    margin-right: 0.5rem;
    width: 20px;
    text-align: center;
    transition: color var(--transition-duration);
}

.card.current-weather {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    text-align: center;
}

.current-weather-main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.current-temp {
    font-size: 2.5rem;
    font-weight: bold;
    transition: color var(--transition-duration);
}

.weather-high-low {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-color);
    transition: color var(--transition-duration);
}

.weather-high-low small {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.weather-high-low i {
    margin-right: 0.25rem;
    color: var(--icon-color);
    font-size: 1rem;
    transition: color var(--transition-duration);
}

.temp-separator {
    margin: 0 0.5rem;
}

.weather-description {
    font-size: 1.2rem;
    margin-top: 1rem;
    transition: color var(--transition-duration);
    font-weight: 500;
}

.weather-details {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 1.5rem;
    gap: 1rem;
}

.weather-item {
    display: flex;
    align-items: center;
    font-size: 1rem;
    color: var(--text-color);
    transition: color var(--transition-duration);
}

.weather-item i {
    margin-right: 0.5rem;
    color: var(--icon-color);
    font-size: 1.2rem;
    transition: color var(--transition-duration);
}

.rain-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    font-size: 1rem;
    color: var(--text-color);
    margin-top: 2rem;
    text-align: center;
    padding: 1.5rem;
}

.rain-info .rain-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.rain-info .rain-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-dark);
}

.rain-info i {
    font-size: 1.2rem;
    transition: color 0.3s ease, transform 0.3s ease;
}

.rain-info .yes {
    background: rgba(46, 204, 113, 0.15);
}

.rain-info .no {
    background: rgba(231, 76, 60, 0.15);
}

.rain-info .yes i {
    color: #2ecc71;
}

.rain-info .no i {
    color: #e74c3c;
}

.rain-info .rain-item:hover i {
    transform: scale(1.1);
}

.rain-info span {
    font-weight: 500;
}

#rain-today, #rain-week {
    font-weight: 600;
    margin-left: 0.5rem;
}

.card.air-quality {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    text-align: center;
}

.air-quality-details {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 1.5rem;
    gap: 1rem;
}

.air-quality-item {
    display: flex;
    align-items: center;
    font-size: 1rem;
    color: var(--text-color);
    transition: color var(--transition-duration);
}

.air-quality-item i {
    margin-right: 0.5rem;
    color: var(--icon-color);
    font-size: 1.2rem;
    transition: color var(--transition-duration);
}

.card.historical-forecast .chart-container,
.card.hourly-forecast .chart-container,
.card.daily-forecast .chart-container {
    width: 100%;
    height: 400px;
    padding: 0;
    position: relative;
}

@media (max-width: 768px) {
    .card.historical-forecast .chart-container,
    .card.hourly-forecast .chart-container,
    .card.daily-forecast .chart-container {
        height: 340px;
    }
}

@media (min-width: 769px) {
    .card.historical-forecast .chart-container,
    .card.hourly-forecast .chart-container,
    .card.daily-forecast .chart-container {
        min-height: 400px;
    }
}

canvas {
    width: 100% !important;
    height: calc(100% - 20px) !important;
    box-sizing: border-box;
    margin-bottom: 20px;
    padding: 0;
}

footer {
    background: var(--header-background);
    text-align: center;
    box-shadow: var(--box-shadow-light);
    margin-top: var(--margin);
    border-top: var(--separator-height) solid var(--separator-color);
    border-radius: var(--border-radius);
    padding: 1.5rem var(--padding); 
    transition: background-color var(--transition-duration), box-shadow var(--transition-duration);
}

#footer-date-time {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--refresh-color);
    transition: color var(--transition-duration);
}

#notification-bar {
    background-color: rgba(44, 62, 80, 0.9);
    color: #ecf0f1;
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    display: none;
    position: relative;
    top: 0; 
    left: 0;
    width: 100%;
    z-index: 1000; 
    border-radius: 0; 
    box-shadow: 0 2px 4px var(--shadow-color); 
    transition: background-color var(--transition-duration), color var(--transition-duration), box-shadow var(--transition-duration);
}

#notification-bar p {
    margin: 0;
}

#enable-notifications {
    background-color: var(--link-color);
    color: var(--text-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    transition: background-color var(--transition-duration), color var(--transition-duration);
    box-shadow: 0 2px 4px var(--shadow-color); 
}

#enable-notifications:hover {
    background-color: var(--link-hover-color);
}

#load-more-button {
    background-color: var(--link-color);
    color: var(--text-color);
    border: none;
    padding: 10px 20px;
    margin-top: 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    transition: background-color var(--transition-duration), color var(--transition-duration), transform var(--transition-duration);
}

#load-more-button:hover {
    background-color: var(--link-hover-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.loading-summary {
    font-style: italic;
    color: var(--link-color);
    transition: color var(--transition-duration);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.loading-throbber {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
}

.loading-throbber::after {
    content: '';
    display: block;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 6px solid var(--link-color);
    border-color: var(--link-color) transparent var(--link-color) transparent;
    animation: throbber 1.2s cubic-bezier(0.55, 0.055, 0.675, 0.19) infinite;
}

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

.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    backdrop-filter: blur(5px);
}

.ai-summary {
    background: var(--card-background);
    padding: var(--padding);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-light);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: var(--margin);
    color: var(--text-color);
    transition: all var(--transition-duration);
    border: 1px solid var(--separator-color);
}

.ai-summary p {
    margin: 0.5rem 0;
    font-weight: 500;
    color: var(--text-color);
    transition: color var(--transition-duration);
}

.ai-summary h3 {
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--link-color);
    margin-bottom: 0.5rem;
    transition: color var(--transition-duration);
    letter-spacing: 0.5px;
}

.ai-summary i {
    color: var(--icon-color);
    margin-right: 0.5rem;
    font-size: 1.2rem;
    vertical-align: middle;
    transition: color var(--transition-duration);
}

.ai-summary:hover {
    background-color: var(--card-hover-background);
    box-shadow: var(--box-shadow-dark);
    transform: translateY(-5px) scale(1.01);
}

@media (max-width: 768px) {
    .ai-summary {
        font-size: 1rem;
        padding: 1rem;
    }

    .ai-summary h3 {
        font-size: 1.3rem;
    }
}

@media (min-width: 769px) {
    .ai-summary {
        font-size: 1.2rem;
        padding: 1.5rem;
    }

    .ai-summary h3 {
        font-size: 1.7rem;
    }
}

@media (max-width: 480px) {
    .card {
        padding: 1rem;
    }

    .card h2, .card h3 {
        font-size: 1.5rem;
    }
}

@media (min-width: 1200px) {
    .card {
        padding: 2rem;
    }

    .card h2, .card h3 {
        font-size: 2rem;
    }
}