:root {
    /* Light mode variables */
    --light-bg: #f5f7fa;
    --light-card-bg: #ffffff;
    --light-text-primary: #333333;
    --light-text-secondary: #666666;
    --light-accent-iftar: #ff6b6b;
    --light-accent-sahur: #4d79ff;
    --light-shadow: rgba(0, 0, 0, 0.1);
    --light-border: #e1e5eb;
    
    /* Dark mode variables */
    --dark-bg: #1a1e24;
    --dark-card-bg: #282f38;
    --dark-text-primary: #f0f2f5;
    --dark-text-secondary: #c5c9d1;
    --dark-accent-iftar: #ff7b7b;
    --dark-accent-sahur: #5d89ff;
    --dark-shadow: rgba(0, 0, 0, 0.3);
    --dark-border: #3a4151;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--light-bg);
    color: var(--light-text-primary);
    transition: background-color 0.3s, color 0.3s;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

body.dark-mode {
    background-color: var(--dark-bg);
    color: var(--dark-text-primary);
}

.app-container {
    width: 100%;
    max-width: 480px;
    background-color: var(--light-card-bg);
    border-radius: 24px;
    box-shadow: 0 10px 30px var(--light-shadow);
    overflow: hidden;
    position: relative;
    padding: 20px;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.dark-mode .app-container {
    background-color: var(--dark-card-bg);
    box-shadow: 0 10px 30px var(--dark-shadow);
}

.theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    cursor: pointer;
    font-size: 20px;
    z-index: 10;
    background-color: var(--light-card-bg);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s;
    box-shadow: 0 2px 10px var(--light-shadow);
}

.dark-mode .theme-toggle {
    background-color: var(--dark-card-bg);
    box-shadow: 0 2px 10px var(--dark-shadow);
}

.dark-mode .theme-toggle i {
    color: #f8cf40;
}

.dark-mode .theme-toggle i:before {
    content: "\f185"; /* sun icon for dark mode */
}

.header {
    padding: 20px 0;
    text-align: center;
    margin-bottom: 20px;
}

.location-info h2 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.location-info p {
    color: var(--light-text-secondary);
    font-size: 1rem;
}

.dark-mode .location-info p {
    color: var(--dark-text-secondary);
}

.main-times {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.time-card {
    flex: 1;
    padding: 20px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 5px 15px var(--light-shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
}

.time-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
}

.time-card.iftar:before {
    background-color: var(--light-accent-iftar);
}

.time-card.sahur:before {
    background-color: var(--light-accent-sahur);
}

.dark-mode .time-card.iftar:before {
    background-color: var(--dark-accent-iftar);
}

.dark-mode .time-card.sahur:before {
    background-color: var(--dark-accent-sahur);
}

.time-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 500;
}

.time-card .time {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.time-card.iftar .time {
    color: var(--light-accent-iftar);
}

.time-card.sahur .time {
    color: var(--light-accent-sahur);
}

.dark-mode .time-card.iftar .time {
    color: var(--dark-accent-iftar);
}

.dark-mode .time-card.sahur .time {
    color: var(--dark-accent-sahur);
}

.time-card .countdown {
    font-size: 1rem;
    color: var(--light-text-secondary);
    padding: 8px 12px;
    border-radius: 8px;
    margin: 0 auto;
    display: inline-block;
    border: 2px solid;
    font-weight: 600;
    letter-spacing: 1px;
    position: relative;
    padding-top: 18px;
}

.time-card .countdown::before {
    content: "Kalan";
    position: absolute;
    top: 4px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    font-weight: normal;
    letter-spacing: normal;
    opacity: 0.8;
}

.time-card.iftar .countdown {
    border-color: var(--light-accent-iftar);
    background-color: rgba(255, 107, 107, 0.1);
}

.time-card.sahur .countdown {
    border-color: var(--light-accent-sahur);
    background-color: rgba(77, 121, 255, 0.1);
}

.dark-mode .time-card .countdown {
    color: var(--dark-text-secondary);
}

.dark-mode .time-card.iftar .countdown {
    border-color: var(--dark-accent-iftar);
    background-color: rgba(255, 123, 123, 0.15);
}

.dark-mode .time-card.sahur .countdown {
    border-color: var(--dark-accent-sahur);
    background-color: rgba(93, 137, 255, 0.15);
}

.time-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px var(--light-shadow);
}

.dark-mode .time-card {
    box-shadow: 0 5px 15px var(--dark-shadow);
}

.dark-mode .time-card:hover {
    box-shadow: 0 10px 20px var(--dark-shadow);
}

.all-prayer-times {
    background-color: rgba(0, 0, 0, 0.03);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 30px;
}

.dark-mode .all-prayer-times {
    background-color: rgba(255, 255, 255, 0.05);
}

.all-prayer-times h3 {
    text-align: center;
    margin-bottom: 15px;
    font-size: 1.2rem;
    font-weight: 500;
}

.prayer-times-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.prayer-time {
    padding: 10px;
    background-color: var(--light-card-bg);
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px var(--light-shadow);
}

.dark-mode .prayer-time {
    background-color: var(--dark-card-bg);
    box-shadow: 0 2px 8px var(--dark-shadow);
}

.prayer-name {
    font-weight: 500;
}

.prayer-time-value {
    font-weight: 600;
}

.days-navigation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.day-button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    background-color: var(--light-card-bg);
    box-shadow: 0 2px 8px var(--light-shadow);
    transition: background-color 0.3s, transform 0.3s;
}

.dark-mode .day-button {
    background-color: var(--dark-card-bg);
    box-shadow: 0 2px 8px var(--dark-shadow);
}

.day-button:hover {
    transform: scale(1.1);
}

.day-indicators {
    display: flex;
    gap: 8px;
}

.day-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--light-border);
}

.day-indicator.active {
    background-color: var(--light-accent-iftar);
}

.dark-mode .day-indicator {
    background-color: var(--dark-border);
}

.dark-mode .day-indicator.active {
    background-color: var(--dark-accent-iftar);
}

/* Responsive design */
@media (max-width: 500px) {
    .app-container {
        border-radius: 0;
        height: 100vh;
        max-width: 100%;
        padding: 15px;
    }
    
    .main-times {
        flex-direction: column;
        gap: 15px;
    }
    
    .prayer-times-container {
        grid-template-columns: 1fr;
    }
}