:root {
    --bg-color: #050505;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --accent-color: #00ff41;
    /* Terminal Green */
    --accent-glow: rgba(0, 255, 65, 0.4);
    --grid-empty: #1a1a1a;
    --grid-border: #222;
    --font-main: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 1rem;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

main {
    width: 100%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

/* Hero Section */
#hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

/* Year Container (Holds particles) */
#year-container {
    position: relative;
    width: 100%;
    max-width: 1100px;
    aspect-ratio: 4/1;
    /* 80x20 = 4:1 */
    margin-bottom: 1.5rem;

    display: flex;
    align-items: center;
    justify-content: center;
}

.day-particle {
    position: absolute;
    /* Size set by JS based on grid dimensions */
    background-color: var(--grid-empty);
    border-radius: 1px;

    transform: translate(-50%, -50%);
    /* Centered */
    transition: background-color 0.2s steps(1);

    /* Text inside pixels */
    display: flex;
    justify-content: center;
    align-items: center;

    /* Dynamic font size: 80 cols fit in 100vw. So 1 col ~ 1.2vw. Text needs to fit inside. */
    /* User requested smaller size */
    font-size: 0.45vw;
    line-height: 1;
    font-family: var(--font-mono);

    /* Solid color for visibility */
    color: #444;
    /* Dim grey for empty squares so they don't overpower the shape */

    overflow: hidden;
    user-select: none;
    cursor: default;
}

.day-particle.filled {
    background-color: var(--accent-color);
    box-shadow: 0 0 2px var(--accent-glow);
    /* Contrast text */
    color: #000;
    font-weight: bold;
}

/* On mobile, text is inevitably too small, but we try */
@media (max-width: 600px) {
    .day-particle {
        /* On 400px screen, 0.7vw is 2.8px. It will just look like texture. */
        color: rgba(255, 255, 255, 0.2);
    }

    .day-particle:hover {
        color: rgba(255, 255, 255, 0.8);
    }

    /* Show ONLY if filled? */
    .day-particle.filled {
        color: rgba(0, 0, 0, 0.5);
    }
}

/* Optimize rendering */
.day-particle {
    will-change: background-color;
}

/* CRT Scanline Effect */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom,
            rgba(255, 255, 255, 0),
            rgba(255, 255, 255, 0) 50%,
            rgba(0, 0, 0, 0.1) 50%,
            rgba(0, 0, 0, 0.1));
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 10;
    opacity: 0.6;
}

/* Animations */
@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 2px var(--accent-glow);
        opacity: 0.9;
    }

    50% {
        box-shadow: 0 0 6px var(--accent-glow);
        opacity: 1;
    }

    100% {
        box-shadow: 0 0 2px var(--accent-glow);
        opacity: 0.9;
    }
}

@keyframes flow {

    0%,
    100% {
        background-color: var(--accent-color);
        box-shadow: 0 0 2px var(--accent-glow);
    }

    50% {
        background-color: #55ff88;
        /* Brighter flash */
        box-shadow: 0 0 8px var(--accent-glow);
    }
}

@keyframes appear {
    from {
        opacity: 0;
        transform: scale(0);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.day-particle.filled {
    /* "Water Flow" / Data Ripple Effect */
    /* Continuous wave moving left to right */
    background-color: var(--accent-color) !important;
    box-shadow: 0 0 4px var(--accent-glow);
    animation: flow 4s infinite ease-in-out;
    /* Offset phase by column to create wave motion */
    animation-delay: calc(var(--col) * 0.1s);
}



/* Counters */
#counters {
    display: flex;
    gap: 4rem;
    text-align: center;
    justify-content: center;
    /* Center them */
    margin-top: 0.5rem;
    margin-bottom: 1rem;
    /* Add breathing room at bottom */
}



.counter-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.loader-wrapper {
    position: relative;
    width: 140px;
    /* Slightly larger for pixel ring */
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Pixel Ring Particles */
.loader-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background-color: var(--grid-empty);
    border-radius: 1px;
    transition: background-color 0.1s steps(1);
    will-change: background-color;
}

.loader-particle.filled {
    background-color: var(--accent-color);
    box-shadow: 0 0 4px var(--accent-glow);
}

/* Blinking edge dot (progress tip) */
.loader-particle.edge {
    animation: blink 0.5s infinite ease-in-out;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
        box-shadow: 0 0 8px var(--accent-glow);
    }

    50% {
        opacity: 0.4;
        box-shadow: 0 0 2px var(--accent-glow);
    }
}

.counter-val {
    position: relative;
    z-index: 2;
    font-family: 'VT323', monospace;
    /* Pixel font */
    /* Adjust size to fit in circle */
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--accent-color);
    /* Green per request */
    line-height: 1;
    text-shadow: 0 0 5px var(--accent-glow);
}

.counter-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Responsive */

/* Medium screens: 2 items on top, 1 on bottom - make percent bigger */
@media (max-width: 768px) and (min-width: 361px) {
    main {
        gap: 1.5rem;
        padding: 0.5rem;
    }

    #counters {
        gap: 1rem;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }

    .loader-wrapper {
        width: 100px;
        height: 100px;
    }

    .counter-val {
        font-size: 1.8rem;
    }

    .counter-label {
        font-size: 0.65rem;
    }

    /* Mobile: Maximize width but keep margins */
    #year-container {
        max-width: none;
        width: 92vw;
    }

    /* Make percent counter larger when alone on second row */
    .counter-item:nth-child(3) .loader-wrapper {
        width: 100px;
        height: 100px;
    }

    .counter-item:nth-child(3) .counter-val {
        font-size: 2rem;
    }
}

/* Small screens: vertical stack - all same size */
@media (max-width: 360px) {
    body {
        padding: 0.5rem;
    }

    main {
        gap: 1rem;
        padding: 0.5rem;
    }

    #counters {
        gap: 0.5rem;
        flex-direction: column;
        align-items: center;
        width: 100%;
        margin-top: 0;
        margin-bottom: 0.5rem;
    }

    .counter-item {
        gap: 0.25rem;
    }

    .loader-wrapper {
        width: 80px;
        height: 80px;
    }

    .counter-val {
        font-size: 1.5rem;
    }

    .counter-label {
        font-size: 0.6rem;
    }

    #year-container {
        max-width: none;
        width: 95vw;
        margin-bottom: 0.5rem;
    }
}

/* Fire Emoji for Current Day - Orange Background with Glow */
.day-particle.current-day-fire {
    background-color: #ff6600;
    box-shadow: 0 0 8px rgba(255, 102, 0, 0.8), 0 0 15px rgba(255, 68, 0, 0.5);
    font-size: 1vw;
    animation: fireGlow 0.8s infinite ease-in-out;
}

@keyframes fireGlow {

    0%,
    100% {
        filter: brightness(1);
        box-shadow: 0 0 8px rgba(255, 102, 0, 0.8), 0 0 15px rgba(255, 68, 0, 0.5);
    }

    50% {
        filter: brightness(1.4);
        box-shadow: 0 0 12px rgba(255, 102, 0, 1),
            0 0 25px rgba(255, 68, 0, 0.8);
    }
}

/* Footer */
footer {
    width: 100%;
    text-align: center;
    padding: 0.5rem;
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
    border-bottom: 1px dotted var(--text-secondary);
}

footer a:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.pixel-heart {
    color: #ff3333;
    font-family: 'VT323', monospace;
    font-size: 1.2rem;
    vertical-align: middle;
    display: inline-block;
    animation: heartBeat 1.5s infinite;
}

@keyframes heartBeat {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }
}

/* Chrome Extension Button */
.chrome-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background-color: rgba(0, 255, 65, 0.1);
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 5px var(--accent-glow);
    margin: 1rem 0;
    border-radius: 4px;
}

.chrome-btn:hover {
    background-color: var(--accent-color);
    color: #000;
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
}

.chrome-btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}