/* ==============================================
   monopoleai.com — Pixel-Art AI Arcade
   Honeyed-Neutral Palette with Lens Flare
   ============================================== */

/* --- CSS Custom Properties --- */
:root {
    --color-deep-amber: #2A2018;
    --color-dark-brown: #4A4030;
    --color-amber-brown: #5A4A38;
    --color-olive-brown: #6A5A40;
    --color-sage-green: #70A060;
    --color-honeyed-grey: #8A7A60;
    --color-golden-honey: #E0C878;
    --color-honey-cream: #F8F0E4;

    --font-display: 'Silkscreen', cursive;
    --font-body: 'Nunito Sans', sans-serif;
    --font-code: 'Fira Code', monospace;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-honey-cream);
    color: var(--color-amber-brown);
    font-family: var(--font-body);
    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
    line-height: 1.85;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* --- Pixel Trail Canvas --- */
#pixel-trail-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    image-rendering: pixelated;
}

/* --- Hero Section --- */
#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-honey-cream);
    overflow: hidden;
}

/* Subtle pixel grid pattern on the hero background */
#hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(90deg, rgba(74, 64, 48, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(74, 64, 48, 0.03) 1px, transparent 1px);
    background-size: 16px 16px;
    pointer-events: none;
    z-index: 0;
}

.lens-flare {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(224, 200, 120, 0.45) 0%,
        rgba(224, 200, 120, 0.18) 25%,
        rgba(224, 200, 120, 0.06) 50%,
        transparent 70%
    );
    pointer-events: none;
    z-index: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -55%);
    animation: flare-pulse 4s ease-in-out infinite alternate;
}

.lens-flare--secondary {
    width: 350px;
    height: 350px;
    background: radial-gradient(
        circle,
        rgba(224, 200, 120, 0.2) 0%,
        rgba(112, 160, 96, 0.08) 40%,
        transparent 65%
    );
    top: 40%;
    left: 55%;
    animation: flare-pulse-secondary 5s ease-in-out 1s infinite alternate;
}

@keyframes flare-pulse {
    0% {
        opacity: 0.6;
        transform: translate(-50%, -55%) scale(1);
    }
    100% {
        opacity: 1;
        transform: translate(-50%, -55%) scale(1.15);
    }
}

@keyframes flare-pulse-secondary {
    0% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(0.9);
    }
    100% {
        opacity: 0.7;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    opacity: 0;
    animation: hero-fade-in 1.2s ease-out 0.3s forwards;
}

@keyframes hero-fade-in {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 7vw, 5rem);
    font-weight: 400;
    color: var(--color-deep-amber);
    letter-spacing: 0.08em;
    text-shadow: 3px 3px 0 var(--color-golden-honey);
    image-rendering: pixelated;
    position: relative;
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: clamp(0.9rem, 2vw, 1.3rem);
    color: var(--color-honeyed-grey);
    margin-top: 1rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

/* Hero pixel decoration row */
.hero-pixel-decoration {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 2rem;
}

.hero-pixel {
    display: block;
    width: 8px;
    height: 8px;
    background: var(--color-golden-honey);
    opacity: 0;
    animation: pixel-pop 0.3s ease-out forwards;
    animation-delay: var(--delay, 0.5s);
}

.hero-pixel:nth-child(2) { background: var(--color-honeyed-grey); }
.hero-pixel:nth-child(3) { background: var(--color-sage-green); }
.hero-pixel:nth-child(4) { background: var(--color-olive-brown); }
.hero-pixel:nth-child(5) { background: var(--color-golden-honey); }

@keyframes pixel-pop {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    70% {
        transform: scale(1.3);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.pixel-scanline {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: repeating-linear-gradient(
        to right,
        var(--color-dark-brown) 0px,
        var(--color-dark-brown) 8px,
        transparent 8px,
        transparent 16px
    );
    opacity: 0.4;
}

/* Scroll indicator */
.hero-scroll-indicator {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    z-index: 2;
    animation: scroll-bounce 2s ease-in-out infinite;
}

.scroll-pixel {
    width: 6px;
    height: 6px;
    background: var(--color-honeyed-grey);
    opacity: 0.5;
}

.scroll-pixel:nth-child(2) { opacity: 0.7; }
.scroll-pixel:nth-child(3) { opacity: 1; }

@keyframes scroll-bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(6px); }
}

/* --- Card Grid Section --- */
#card-grid {
    position: relative;
    padding: 6rem 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Stepped gradient background decoration */
#card-grid::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    background:
        linear-gradient(
            180deg,
            var(--color-honey-cream) 0%,
            rgba(224, 200, 120, 0.06) 50%,
            var(--color-honey-cream) 100%
        );
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 400;
    color: var(--color-deep-amber);
    letter-spacing: 0.05em;
}

.pixel-divider {
    width: 120px;
    height: 4px;
    margin: 1.5rem auto 0;
    background: repeating-linear-gradient(
        to right,
        var(--color-golden-honey) 0px,
        var(--color-golden-honey) 8px,
        transparent 8px,
        transparent 12px
    );
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* --- Pixel Card --- */
.pixel-card {
    position: relative;
    background: var(--color-honey-cream);
    border: 3px solid var(--color-dark-brown);
    padding: 2rem 1.5rem 1.5rem;
    clip-path: polygon(
        0 8px, 8px 8px, 8px 0,
        calc(100% - 8px) 0, calc(100% - 8px) 8px, 100% 8px,
        100% calc(100% - 8px), calc(100% - 8px) calc(100% - 8px), calc(100% - 8px) 100%,
        8px 100%, 8px calc(100% - 8px), 0 calc(100% - 8px)
    );
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    opacity: 0;
    transform: translateY(30px);
    overflow: hidden;
}

.pixel-card.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.pixel-card:hover {
    transform: translateY(-4px);
    box-shadow: 6px 6px 0 var(--color-golden-honey);
}

.pixel-card.visible:hover {
    transform: translateY(-4px);
}

/* Card lens flare on hover */
.card-lens-flare {
    position: absolute;
    top: -30px;
    right: -30px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(224, 200, 120, 0.3) 0%,
        rgba(224, 200, 120, 0.1) 40%,
        transparent 65%
    );
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.pixel-card:hover .card-lens-flare {
    opacity: 1;
}

/* Card icon */
.card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    image-rendering: pixelated;
}

.pixel-icon {
    width: 100%;
    height: 100%;
    image-rendering: pixelated;
}

/* Card category icon (corner marker) */
.card-category-icon {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 20px;
    height: 20px;
    opacity: 0;
    transition: opacity 0.4s ease 0.2s;
    image-rendering: pixelated;
}

.pixel-card.visible .card-category-icon {
    opacity: 0.6;
}

.category-pixel-icon {
    width: 100%;
    height: 100%;
    image-rendering: pixelated;
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--color-deep-amber);
    margin-bottom: 0.75rem;
    letter-spacing: 0.03em;
}

.card-description {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 0.95rem;
    line-height: 1.75;
    color: var(--color-amber-brown);
    margin-bottom: 1rem;
}

.card-tag {
    display: inline-block;
    background: var(--color-deep-amber);
    padding: 0.3rem 0.7rem;
    clip-path: polygon(
        0 4px, 4px 4px, 4px 0,
        calc(100% - 4px) 0, calc(100% - 4px) 4px, 100% 4px,
        100% calc(100% - 4px), calc(100% - 4px) calc(100% - 4px), calc(100% - 4px) 100%,
        4px 100%, 4px calc(100% - 4px), 0 calc(100% - 4px)
    );
}

.card-tag code {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--color-golden-honey);
    letter-spacing: 0.02em;
}

/* --- Footer --- */
#site-footer {
    padding: 3rem 2rem 2rem;
    text-align: center;
    background: var(--color-deep-amber);
    position: relative;
}

.footer-pixel-border {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: repeating-linear-gradient(
        to right,
        var(--color-golden-honey) 0px,
        var(--color-golden-honey) 8px,
        var(--color-dark-brown) 8px,
        var(--color-dark-brown) 16px
    );
}

.footer-text {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--color-golden-honey);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.footer-sub {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--color-honeyed-grey);
    font-weight: 300;
    letter-spacing: 0.05em;
}

.footer-pixel-row {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 1.5rem;
}

.footer-pixel {
    display: block;
    width: 6px;
    height: 6px;
    opacity: 0.7;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .cards-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .cards-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    #card-grid {
        padding: 4rem 1.25rem 3rem;
    }

    .pixel-card {
        padding: 1.5rem 1.25rem 1.25rem;
    }

    .hero-title {
        text-shadow: 2px 2px 0 var(--color-golden-honey);
    }

    .lens-flare {
        width: 350px;
        height: 350px;
    }

    .lens-flare--secondary {
        width: 200px;
        height: 200px;
    }
}

/* --- Selection Color --- */
::selection {
    background: var(--color-golden-honey);
    color: var(--color-deep-amber);
}