/* ===========================
   RESET & BASE STYLES
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Post-apocalyptic color palette */
    --color-blood: #8b0000;
    --color-rust: #b7410e;
    --color-decay: #4a5d23;
    --color-ash: #2a2a2a;
    --color-bone: #d4d4d4;
    --color-toxic: #39ff14;
    --color-danger: #ff3333;
    --color-warning: #ff9500;

    /* Background colors */
    --bg-dark: #0a0a0a;
    --bg-darker: #050505;
    --bg-wasteland: #1a1510;

    /* Accent colors */
    --accent-primary: var(--color-blood);
    --accent-secondary: var(--color-rust);
    --accent-glow: var(--color-toxic);

    /* Typography */
    --font-pixel: 'Press Start 2P', cursive;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-pixel);
    background: var(--bg-dark);
    color: var(--color-bone);
    overflow-x: hidden;
    line-height: 1.8;
    font-size: 14px;
}

/* ===========================
   PARTICLE BACKGROUND
   =========================== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background:
        radial-gradient(ellipse at top, rgba(139, 0, 0, 0.15), transparent 50%),
        radial-gradient(ellipse at bottom, rgba(26, 21, 16, 0.3), transparent 50%),
        var(--bg-dark);
}

.glitch-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15),
        rgba(0, 0, 0, 0.15) 1px,
        transparent 1px,
        transparent 2px
    );
    animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
    0% { transform: translateY(0); }
    100% { transform: translateY(100px); }
}

/* ===========================
   TYPOGRAPHY
   =========================== */
.glitch {
    position: relative;
    text-shadow:
        2px 2px 0px var(--color-blood),
        -2px -2px 0px var(--color-toxic);
    animation: glitch 3s infinite;
}

.glitch:hover {
    animation: glitch-intense 0.3s infinite;
}

@keyframes glitch {
    0%, 90%, 100% {
        text-shadow:
            2px 2px 0px var(--color-blood),
            -2px -2px 0px var(--color-toxic);
    }
    95% {
        text-shadow:
            -2px 2px 0px var(--color-blood),
            2px -2px 0px var(--color-toxic);
    }
}

@keyframes glitch-intense {
    0%, 100% {
        text-shadow:
            2px 2px 0px var(--color-blood),
            -2px -2px 0px var(--color-toxic);
    }
    25% {
        text-shadow:
            -2px 2px 0px var(--color-blood),
            2px -2px 0px var(--color-toxic);
    }
    50% {
        text-shadow:
            2px -2px 0px var(--color-blood),
            -2px 2px 0px var(--color-toxic);
    }
    75% {
        text-shadow:
            -2px -2px 0px var(--color-blood),
            2px 2px 0px var(--color-toxic);
    }
}

/* ===========================
   NAVIGATION
   =========================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    border-bottom: 2px solid var(--color-blood);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1rem;
    color: var(--color-bone);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-bone);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
}

.nav-link:hover {
    color: var(--color-blood);
    border-color: var(--color-blood);
    box-shadow: 0 0 10px rgba(139, 0, 0, 0.5);
}

.cta-link {
    background: var(--color-blood);
    border-color: var(--color-blood);
    color: var(--color-bone);
}

.cta-link:hover {
    background: transparent;
    box-shadow: 0 0 20px rgba(139, 0, 0, 0.8);
}

/* ===========================
   CONTAINER
   =========================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-pixel);
    font-size: 0.8rem;
    text-decoration: none;
    border: 2px solid;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--color-blood);
    border-color: var(--color-blood);
    color: var(--color-bone);
}

.btn-primary:hover {
    background: transparent;
    box-shadow: 0 0 20px rgba(139, 0, 0, 0.8), inset 0 0 20px rgba(139, 0, 0, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    border-color: var(--color-rust);
    color: var(--color-rust);
}

.btn-secondary:hover {
    background: var(--color-rust);
    color: var(--color-bone);
    box-shadow: 0 0 20px rgba(183, 65, 14, 0.8);
    transform: translateY(-2px);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
}

.btn-steam {
    background: linear-gradient(135deg, #1b2838 0%, #2a475e 100%);
    border-color: #66c0f4;
    color: #66c0f4;
    position: relative;
}

.btn-steam:hover {
    background: linear-gradient(135deg, #2a475e 0%, #1b2838 100%);
    border-color: #66c0f4;
    box-shadow: 0 0 30px rgba(102, 192, 244, 0.6), inset 0 0 20px rgba(102, 192, 244, 0.2);
    transform: translateY(-2px);
    color: #ffffff;
}

.btn-steam svg {
    width: 32px;
    height: 32px;
}

/* ===========================
   HERO SECTION
   =========================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: 60px;
    background:
        radial-gradient(ellipse at center, rgba(139, 0, 0, 0.1), transparent 70%),
        var(--bg-dark);
}

.hero-content {
    max-width: 1400px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-text {
    z-index: 2;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    color: var(--color-bone);
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--color-rust);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--color-blood);
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    color: var(--color-blood);
    text-shadow: 0 0 10px rgba(139, 0, 0, 0.8);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--color-rust);
    margin-top: var(--spacing-xs);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    z-index: 1;
}

.character-showcase {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    filter: drop-shadow(0 0 30px rgba(139, 0, 0, 0.5));
}

.player-img {
    width: 100%;
    max-width: 300px;
    display: block;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.zombie-swarm {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.zombie {
    position: absolute;
    width: 120px;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    opacity: 0.8;
}

.zombie-1 {
    top: 10%;
    left: -10%;
    animation: float 3s ease-in-out infinite;
}

.zombie-2 {
    top: 30%;
    right: -15%;
    animation: float 4s ease-in-out infinite 0.5s;
}

.zombie-3 {
    bottom: 15%;
    left: 0%;
    animation: float 3.5s ease-in-out infinite 1s;
}

.zombie-4 {
    bottom: 10%;
    right: 0%;
    animation: float 4.5s ease-in-out infinite 1.5s;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 20px rgba(139, 0, 0, 0.8));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 40px rgba(139, 0, 0, 1));
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(-5deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

.float {
    animation: float 3s ease-in-out infinite;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-left: 3px solid var(--color-blood);
    border-bottom: 3px solid var(--color-blood);
    transform: rotate(-45deg);
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ===========================
   SECTION TITLES
   =========================== */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-bone);
}

.section-subtitle {
    text-align: center;
    color: var(--color-rust);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
}

/* ===========================
   FEATURES SECTION
   =========================== */
.features {
    padding: var(--spacing-xl) 0;
    background: var(--bg-wasteland);
    border-top: 3px solid var(--color-blood);
    border-bottom: 3px solid var(--color-blood);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: rgba(26, 21, 16, 0.5);
    border: 2px solid var(--color-rust);
    padding: var(--spacing-md);
    transition: all 0.3s ease;
    position: relative;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover {
    border-color: var(--color-blood);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(139, 0, 0, 0.3);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-blood);
    background: rgba(139, 0, 0, 0.1);
    position: relative;
}

.feature-icon img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-blood);
    text-align: center;
}

.feature-card p {
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--color-bone);
    opacity: 0.8;
}

/* ===========================
   GAMEPLAY SECTION
   =========================== */
.gameplay {
    padding: var(--spacing-xl) 0;
    background: var(--bg-dark);
}

.gameplay-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.gameplay-visual {
    position: relative;
}

.game-screenshot-frame {
    position: relative;
    border: 4px solid var(--color-blood);
    background: var(--bg-darker);
    padding: var(--spacing-md);
    box-shadow:
        0 0 20px rgba(139, 0, 0, 0.5),
        inset 0 0 30px rgba(139, 0, 0, 0.2);
}

.scanlines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15),
        rgba(0, 0, 0, 0.15) 2px,
        transparent 2px,
        transparent 4px
    );
    pointer-events: none;
    z-index: 2;
}

.screenshot-content {
    position: relative;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

.zombie-showcase {
    display: flex;
    justify-content: center;
}

.boss-zombie {
    width: 200px;
    height: 200px;
    object-fit: contain;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    animation: pulse 2s ease-in-out infinite;
}

.weapon-showcase {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.weapon {
    width: 80px;
    height: 80px;
    object-fit: contain;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    transition: transform 0.3s ease;
}

.weapon:hover {
    transform: scale(1.2) rotate(5deg);
    filter: drop-shadow(0 0 10px rgba(139, 0, 0, 0.8));
}

.gameplay-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.gameplay-feature {
    border-left: 4px solid var(--color-blood);
    padding-left: var(--spacing-md);
    position: relative;
}

.feature-number {
    position: absolute;
    left: -15px;
    top: 0;
    background: var(--color-blood);
    color: var(--color-bone);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    border: 2px solid var(--bg-dark);
}

.gameplay-feature h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-blood);
}

.gameplay-feature p {
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--color-bone);
    opacity: 0.8;
}

/* ===========================
   ENEMIES SECTION
   =========================== */
.enemies {
    padding: var(--spacing-xl) 0;
    background: var(--bg-wasteland);
    border-top: 3px solid var(--color-blood);
}

.enemies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.enemy-card {
    background: rgba(10, 10, 10, 0.8);
    border: 2px solid var(--color-rust);
    padding: var(--spacing-md);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.enemy-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 0, 0, 0.2), transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.enemy-card:hover {
    border-color: var(--color-blood);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(139, 0, 0, 0.5);
}

.enemy-card:hover::before {
    opacity: 1;
}

.enemy-card img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    transition: transform 0.3s ease;
}

.enemy-card:hover img {
    transform: scale(1.1);
    filter: drop-shadow(0 0 15px rgba(139, 0, 0, 1));
}

.enemy-card h3 {
    font-size: 1rem;
    color: var(--color-blood);
    margin-bottom: var(--spacing-xs);
}

.enemy-card p {
    font-size: 0.7rem;
    color: var(--color-bone);
    opacity: 0.7;
}

/* ===========================
   DOWNLOAD SECTION
   =========================== */
.download {
    padding: var(--spacing-xl) 0;
    background:
        linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-wasteland) 100%);
    border-top: 3px solid var(--color-blood);
    text-align: center;
}

.download-content {
    max-width: 800px;
    margin: 0 auto;
}

.download-subtitle {
    font-size: 1rem;
    color: var(--color-rust);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.steam-cta {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.download-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.download-info {
    font-size: 0.75rem;
    color: var(--color-bone);
    opacity: 0.7;
    margin-bottom: var(--spacing-md);
}

.version-info {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.version-badge,
.status-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid;
    font-size: 0.7rem;
}

.version-badge {
    border-color: var(--color-rust);
    color: var(--color-rust);
}

.status-badge {
    border-color: var(--color-blood);
    color: var(--color-blood);
    background: rgba(139, 0, 0, 0.2);
    animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
    0%, 100% {
        box-shadow: 0 0 5px rgba(139, 0, 0, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(139, 0, 0, 1);
    }
}

/* ===========================
   FOOTER
   =========================== */
.footer {
    background: var(--bg-darker);
    border-top: 3px solid var(--color-blood);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    font-size: 0.75rem;
    color: var(--color-rust);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.footer-column h4 {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-blood);
}

.footer-column a {
    display: block;
    font-size: 0.7rem;
    color: var(--color-bone);
    text-decoration: none;
    margin-bottom: var(--spacing-xs);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.footer-column a:hover {
    opacity: 1;
    color: var(--color-blood);
    padding-left: var(--spacing-xs);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-rust);
    font-size: 0.7rem;
    color: var(--color-bone);
    opacity: 0.5;
}

.footer-bottom p {
    margin-bottom: var(--spacing-xs);
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 968px) {
    body {
        font-size: 12px;
    }

    .hero-content,
    .gameplay-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .nav-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .zombie {
        width: 80px;
    }
}

@media (max-width: 640px) {
    body {
        font-size: 10px;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.2rem;
    }

    .features-grid,
    .enemies-grid {
        grid-template-columns: 1fr;
    }

    .btn-large {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.8rem;
    }

    .download-buttons {
        flex-direction: column;
    }
}