* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
*::selection{
    background: orange;
}
:root {
    --yellow: #FFD700;
    --black: #1A1A1A;
    --red: #FF0000;
    --blue: #0066FF;
    --white: #FFFFFF;
    --transition: cubic-bezier(0.34, 1.56, 0.64, 1);
}

html, body {
    width: 100%;
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Courier New', monospace;
    background: linear-gradient(135deg, var(--yellow) 0%, #FFC700 100%);
    color: var(--black);
    line-height: 1.6;
    position: relative;
}


.container {
    min-height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 20px;
}


.hazard-tape-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(
            45deg,
            var(--black) 0px,
            var(--black) 20px,
            var(--yellow) 20px,
            var(--yellow) 40px
        );
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
    animation: tapeDrift 20s linear infinite;
}

@keyframes tapeDrift {
    0% {
        transform: translateX(0) translateY(0);
    }
    100% {
        transform: translateX(40px) translateY(40px);
    }
}


.siren-container {
    position: fixed;
    top: 30px;
    right: 30px;
    z-index: 100;
}

.siren {
    width: 60px;
    height: 60px;
    border: 4px solid var(--black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--white);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    animation: sirenRotate 2s linear infinite;
}

.siren-light {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    position: absolute;
    animation: lightPulse 0.5s ease-in-out infinite;
}

.siren-light.red {
    background: var(--red);
    left: 8px;
    animation: redPulse 0.5s ease-in-out infinite;
}

.siren-light.blue {
    background: var(--blue);
    right: 8px;
    animation: bluePulse 0.5s ease-in-out infinite;
}

@keyframes sirenRotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes redPulse {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 10px var(--red);
    }
    50% {
        opacity: 0.3;
        box-shadow: 0 0 20px var(--red);
    }
}

@keyframes bluePulse {
    0%, 100% {
        opacity: 0.3;
        box-shadow: 0 0 10px var(--blue);
    }
    50% {
        opacity: 1;
        box-shadow: 0 0 20px var(--blue);
    }
}


.content {
    position: relative;
    z-index: 10;
    text-align: center;
    width: 100%;
    max-width: 600px;
}

.hero-section {
    margin-bottom: 60px;
    animation: slideInDown 0.8s ease-out;
}

.hero-content {
    padding: 40px;
    background: rgba(255, 255, 255, 0.9);
    border: 4px solid var(--black);
    clip-path: polygon(0 8%, 100% 0, 100% 92%, 0 100%);
    box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.3);
}

.title {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: 4px;
    color: var(--black);
    text-transform: uppercase;
    margin-bottom: 20px;
    text-shadow: 3px 3px 0 var(--yellow);
    animation: titleBounce 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.subtitle {
    font-size: 1.2rem;
    color: var(--red);
    font-weight: bold;
    letter-spacing: 2px;
    animation: subtitleFade 1s ease-out 0.3s both;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes titleBounce {
    0% {
        transform: scale(0.8) translateY(-20px);
        opacity: 0;
    }
    60% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

@keyframes subtitleFade {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.hazard-tape-divider {
    height: 8px;
    background: repeating-linear-gradient(
        90deg,
        var(--black) 0px,
        var(--black) 15px,
        var(--yellow) 15px,
        var(--yellow) 30px
    );
    margin: 20px 0;
    animation: tapePulse 0.8s ease-in-out;
}

@keyframes tapePulse {
    0%, 100% {
        transform: scaleX(0);
    }
    50% {
        transform: scaleX(1);
    }
}

.button-section {
    margin-top: 40px;
    animation: slideInUp 0.8s ease-out 0.2s both;
}

.download-btn {
    width: 100%;
    max-width: 300px;
    padding: 25px 40px;
    font-size: 1.8rem;
    font-weight: 900;
    letter-spacing: 3px;
    text-transform: uppercase;
    background: var(--red);
    color: var(--white);
    border: 4px solid var(--black);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.1s var(--transition);
    box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.4);
    font-family: 'Courier New', monospace;
    clip-path: polygon(0 0, 95% 0, 100% 100%, 5% 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.download-btn:hover {
    transform: scale(1.08) translateY(-3px);
    box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.5), 0 0 30px rgba(255, 0, 0, 0.6);
    background: #FF3333;
}

.download-btn:active {
    transform: scale(0.95) translateY(2px);
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
}

.btn-text {
    display: inline-block;
}

.btn-icon {
    font-size: 1.5rem;
    animation: iconBounce 0.6s ease-in-out infinite;
}

@keyframes iconBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(8px);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.button-description {
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--black);
    font-weight: bold;
    letter-spacing: 1px;
    animation: fadeIn 1s ease-out 0.5s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}


.hazard-stripes {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 120px;
    display: flex;
    z-index: 5;
}

.stripe {
    flex: 1;
    background: repeating-linear-gradient(
        45deg,
        var(--black) 0px,
        var(--black) 20px,
        var(--yellow) 20px,
        var(--yellow) 40px
    );
    animation: stripeScroll 3s linear infinite;
}

.stripe:nth-child(2) {
    animation-delay: -1s;
}

.stripe:nth-child(3) {
    animation-delay: -2s;
}

@keyframes stripeScroll {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 40px 40px;
    }
}


.floating-symbols {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 1;
}

.symbol {
    position: absolute;
    font-size: 3rem;
    opacity: 0.15;
    animation: float 6s ease-in-out infinite;
}

.symbol:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.symbol:nth-child(2) {
    top: 20%;
    right: 15%;
    animation-delay: 1s;
    font-size: 2.5rem;
}

.symbol:nth-child(3) {
    bottom: 20%;
    left: 5%;
    animation-delay: 2s;
}

.symbol:nth-child(4) {
    bottom: 10%;
    right: 10%;
    animation-delay: 3s;
    font-size: 2.5rem;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-30px) rotate(5deg);
    }
}


@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
        letter-spacing: 2px;
    }

    .subtitle {
        font-size: 1rem;
        letter-spacing: 1px;
    }

    .hero-content {
        padding: 30px 20px;
    }

    .download-btn {
        padding: 20px 30px;
        font-size: 1.4rem;
        letter-spacing: 2px;
        max-width: 280px;
    }

    .btn-icon {
        font-size: 1.2rem;
    }

    .siren-container {
        top: 20px;
        right: 20px;
    }

    .siren {
        width: 50px;
        height: 50px;
        border-width: 3px;
    }

    .siren-light {
        width: 16px;
        height: 16px;
    }

    .symbol {
        font-size: 2rem;
    }

    .symbol:nth-child(2),
    .symbol:nth-child(4) {
        font-size: 1.8rem;
    }

    .hazard-stripes {
        height: 80px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }

    .title {
        font-size: 2rem;
        letter-spacing: 1px;
        text-shadow: 2px 2px 0 var(--yellow);
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .hero-content {
        padding: 20px 15px;
        border-width: 3px;
    }

    .download-btn {
        padding: 18px 25px;
        font-size: 1.2rem;
        letter-spacing: 1px;
        max-width: 100%;
        gap: 10px;
    }

    .button-description {
        font-size: 0.8rem;
    }

    .siren-container {
        top: 15px;
        right: 15px;
    }

    .siren {
        width: 45px;
        height: 45px;
        border-width: 2px;
    }

    .siren-light {
        width: 14px;
        height: 14px;
    }

    .symbol {
        font-size: 1.5rem;
    }

    .symbol:nth-child(2),
    .symbol:nth-child(4) {
        font-size: 1.3rem;
    }

    .hero-section {
        margin-bottom: 40px;
    }

    .button-section {
        margin-top: 30px;
    }

    .hazard-stripes {
        height: 60px;
    }
}


@media (hover: none) and (pointer: coarse) {
    .download-btn {
        min-height: 50px;
        min-width: 50px;
    }

    .download-btn:active {
        transform: scale(0.98) translateY(1px);
    }
}


html {
    scroll-behavior: smooth;
}

.download-btn,
.siren {
    user-select: none;
    -webkit-user-select: none;
}