:root {
    --bg-color: #000000;
    --text-color: #ffffff;
    --dim-color: rgba(255, 255, 255, 0.6);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body,
html {
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.clock-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 100%;
    padding: 20px;
    z-index: 1;
    animation: fadeUp 1.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    opacity: 0;
    transform: translateY(20px);
}

#bg-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.date-display {
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--dim-color);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.time-display {
    font-size: 20vw;
    /* Responsive font size */
    font-weight: 100;
    /* Thin weight like iOS lock screen */
    line-height: 1;
    letter-spacing: -5px;
    font-variant-numeric: tabular-nums;
    display: flex;
    align-items: baseline;
    justify-content: center;
    transition: transform 0.3s ease-out;
    cursor: default;
}

.time-display:hover {
    transform: scale(1.02);
}

/* Cap the font size on very large screens so it doesn't look ridiculous */
@media (min-width: 1200px) {
    .time-display {
        font-size: 240px;
    }
}

@media (max-width: 600px) {
    .time-display {
        font-size: 25vw;
        letter-spacing: -2px;
    }

    .date-display {
        font-size: 1rem;
    }
}

.colon {
    position: relative;
    top: -0.05em;
    /* Visual adjustment */
    animation: pulse 2s infinite ease-in-out;
    opacity: 0.8;
}

.timezone-label {
    margin-top: 1rem;
    font-size: 1rem;
    color: #333;
    font-weight: 300;
    letter-spacing: 1px;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}