:root {
    --primary-color: #DE4B4B;
    --background: #fff;
    --background-secondary: #fff;
    --text-primary: #333;
    --text-secondary: #666;
    --border-color: #e5e5e5;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --status-background: #E8F5E9;
    --status-text: #2E7D32;
    --green: #41cf4b;

    /* Spacing */
    --spacing: 24px;
    --spacing-md: 16px;
    --spacing-xs: 8px;

    /* Typography */
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 24px;
    --font-size-xl: 48px;

    /* Border radius */
    --border-radius: 12px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #c54d4d;
        --background: #1c1c1e;
        --background-secondary: #2c2c2e;
        --text-primary: #fff;
        --text-secondary: #98989f;
        --border-color: #3a3a3c;
        --shadow-color: rgba(0, 0, 0, 0.3);
        --status-background: #263238;
        --status-text: #81c784;
        --green: #40b92e;
    }
}

body {
    display: flex;
    flex-direction: column;
    margin: 0;
    background: var(--background);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.5;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
    margin-top: 14vmin;
    padding: var(--spacing);
    width: 100%;
    max-width: 600px;
}

.clock-change {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing);
    margin-bottom: var(--spacing);
}

.calendar-container {
    flex-shrink: 0;
    margin-top: 0.5rem;
    padding-right: 1rem;
    width: 120px;
}

.calendar {
    box-shadow: 0 2px 8px var(--shadow-color);
    border-radius: var(--border-radius);
    background: var(--background-secondary);
    width: 100%;
    overflow: hidden;
}

.calendar-month {
    background: var(--primary-color);
    padding: 4px;
    color: white;
    font-weight: 500;
    font-size: var(--font-size-sm);
    text-align: center;
    text-transform: uppercase;
}

.calendar-day {
    padding: 12px;
    font-weight: 300;
    font-size: var(--font-size-xl);
    text-align: center;
}

.time-change {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 1.2rem;
    color: var(--text-secondary);
    font-weight: 400;
    font-size: var(--font-size-md);
}

.arrow {
    color: var(--primary-color);
}

.status {
    display: inline-block;
    margin-bottom: var(--spacing-xs);
    border-radius: 16px;
    background: var(--status-background);
    padding: 4px 12px;
    color: var(--status-text);
    font-size: var(--font-size-sm);
}

.tonight {
    color: var(--primary-color);
    font-weight: 500;
}

.countdown {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.info {
    flex-grow: 1;
}

.no-dst {
    padding: var(--spacing);
    color: var(--text-secondary);
    text-align: center;
}

h1 {
    margin: 0 0 16px 0;
    font-weight: 500;
    font-size: var(--font-size-lg);
}

p {
    margin: 8px 0;
    color: var(--text-secondary);
}

/* Footer styles */
.app-footer {
    margin-top: 7vmin;
    width: 100%;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.footer-content {
    display: flex;
    justify-content: center;
    margin: 0 auto;
    max-width: 1200px;
    text-align: center;
}

.footer-text {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-xs);
    margin: 0;
}

a {
    transition: opacity 0.2s ease;
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: 2px;
}

.separator {
    opacity: 0.5;
    color: var(--text-secondary);
    user-select: none;
}

.time-loss {
    color: var(--primary-color);
}

.time-gain {
    color: var(--green);
}

@media (max-width: 650px) {
    body {
        justify-content: space-between;
        min-height: 100dvh;
    }

    .container {
        display: flex;
        flex: 1;
        justify-content: center;
        align-items: center;
        box-sizing: border-box;
        padding: var(--spacing-md);
        width: 100%;
    }

    .clock-change {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
        text-align: center;
    }

    .description,
    .user-timezone,
    .footer-text span {
        max-width: 100%;
        word-break: break-word;
        overflow-wrap: break-word;
    }

    .calendar-container {
        padding: 0;
        width: min(100px, 30%);
        min-width: 80px;
    }

    .info {
        width: 100%;
    }

    h1 {
        font-size: calc(var(--font-size-lg) * 0.9);
        text-align: center;
    }

    .status {
        display: inline-flex;
        margin: 0 auto var(--spacing-md);
    }

    .app-footer {
        box-sizing: border-box;
        margin-bottom: 2rem;
        padding: var(--spacing-md);
    }

    .footer-content {
        box-sizing: border-box;
        width: 100%;
    }

    .footer-text {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .separator {
        display: none;
    }

    .calendar-day {
        font-size: calc(var(--font-size-xl) * 0.8);
    }

    .time-change {
        font-size: calc(var(--font-size-md) * 0.9);
    }
}