/* Op Art - Optical illusions and kinetic patterns */

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

:root {
    --black: #000000;
    --white: #ffffff;
    --accent: #ff3366;
}

body {
    min-height: 100vh;
    background: var(--white);
    font-family: 'Helvetica Neue', Arial, sans-serif;
    color: var(--black);
    overflow-x: hidden;
}

.canvas {
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.header {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--black);
    color: var(--white);
}

.header h1 {
    font-size: clamp(2rem, 8vw, 5rem);
    font-weight: 100;
    letter-spacing: 0.5em;
    margin-left: 0.5em;
}

.subtitle {
    margin-top: 1rem;
    font-size: 1rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    opacity: 0.7;
}

/* Gallery */
.gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
}

.artwork {
    aspect-ratio: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--white);
}

.artwork:nth-child(2),
.artwork:nth-child(3) {
    background: var(--black);
}

.label {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.6;
    white-space: nowrap;
}

.artwork:nth-child(2) .label,
.artwork:nth-child(3) .label {
    color: var(--white);
}

/* Concentric Circles */
.concentric {
    background: var(--white);
}

.ring {
    position: absolute;
    border-radius: 50%;
    border: 8px solid var(--black);
}

.ring-1 { width: 90%; height: 90%; }
.ring-2 { width: 78%; height: 78%; }
.ring-3 { width: 66%; height: 66%; }
.ring-4 { width: 54%; height: 54%; }
.ring-5 { width: 42%; height: 42%; }
.ring-6 { width: 30%; height: 30%; }
.ring-7 { width: 18%; height: 18%; }
.ring-8 { width: 6%; height: 6%; background: var(--black); }

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

@media (prefers-reduced-motion: no-preference) {
    .ring {
        animation: pulse 2s ease-in-out infinite;
    }
    .ring-2 { animation-delay: 0.1s; }
    .ring-3 { animation-delay: 0.2s; }
    .ring-4 { animation-delay: 0.3s; }
    .ring-5 { animation-delay: 0.4s; }
    .ring-6 { animation-delay: 0.5s; }
    .ring-7 { animation-delay: 0.6s; }
    .ring-8 { animation-delay: 0.7s; }
}

/* Checkerboard */
.checker-pattern {
    width: 90%;
    height: 90%;
    background:
        repeating-conic-gradient(
            var(--white) 0deg 90deg,
            var(--black) 90deg 180deg
        );
    background-size: 12.5% 12.5%;
}

@keyframes checker-wave {
    0%, 100% { transform: perspective(500px) rotateX(0deg); }
    50% { transform: perspective(500px) rotateX(5deg); }
}

@media (prefers-reduced-motion: no-preference) {
    .checker-pattern {
        animation: checker-wave 4s ease-in-out infinite;
    }
}

/* Waves */
.wave-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 10%;
}

.wave {
    height: 15%;
    background: repeating-linear-gradient(
        90deg,
        var(--white) 0px,
        var(--white) 10px,
        var(--black) 10px,
        var(--black) 20px
    );
    margin: 2% 0;
}

@keyframes wave-shift {
    0% { transform: translateX(0) scaleY(1); }
    25% { transform: translateX(-5px) scaleY(1.1); }
    50% { transform: translateX(0) scaleY(1); }
    75% { transform: translateX(5px) scaleY(0.9); }
    100% { transform: translateX(0) scaleY(1); }
}

@media (prefers-reduced-motion: no-preference) {
    .wave:nth-child(1) { animation: wave-shift 3s ease-in-out infinite; }
    .wave:nth-child(2) { animation: wave-shift 3s ease-in-out infinite 0.2s; }
    .wave:nth-child(3) { animation: wave-shift 3s ease-in-out infinite 0.4s; }
    .wave:nth-child(4) { animation: wave-shift 3s ease-in-out infinite 0.6s; }
    .wave:nth-child(5) { animation: wave-shift 3s ease-in-out infinite 0.8s; }
}

/* Spiral */
.spiral-pattern {
    width: 80%;
    height: 80%;
    background: repeating-conic-gradient(
        from 0deg,
        var(--black) 0deg 10deg,
        var(--white) 10deg 20deg
    );
    border-radius: 50%;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: no-preference) {
    .spiral-pattern {
        animation: rotate 20s linear infinite;
    }
}

/* Text Content */
.text-content {
    padding: 4rem 2rem;
    text-align: center;
    background: var(--white);
}

blockquote {
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: 300;
    font-style: italic;
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.artists {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.artists span {
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.6;
}

/* Stripes Section */
.stripes-section {
    height: 100px;
    overflow: hidden;
}

.stripes {
    width: 200%;
    height: 100%;
    background: repeating-linear-gradient(
        -45deg,
        var(--black) 0px,
        var(--black) 20px,
        var(--white) 20px,
        var(--white) 40px
    );
}

@keyframes stripe-move {
    from { transform: translateX(0); }
    to { transform: translateX(-56.57px); }
}

@media (prefers-reduced-motion: no-preference) {
    .stripes {
        animation: stripe-move 1s linear infinite;
    }
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background: var(--black);
    color: var(--white);
}

footer p {
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.blink {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

@media (prefers-reduced-motion: no-preference) {
    .blink {
        animation: blink 1s ease-in-out infinite;
    }
}

/* Responsive */
@media (max-width: 600px) {
    .gallery {
        grid-template-columns: 1fr;
    }

    .header {
        padding: 3rem 1rem;
    }

    .ring {
        border-width: 5px;
    }

    .artists {
        flex-direction: column;
        gap: 1rem;
    }
}