/* relativity.studio - Kinetic Typography Exhibition */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --canvas-white: #F5F5F5;
    --near-white: #EBEBEB;
    --ink-black: #1A1A1A;
    --mid-gray: #6A6A6A;
    --soft-gray: #888888;
    --accent-blue: #3A5BA0;
    --velocity-red: #E63946;
}
body {
    background: var(--canvas-white);
    color: var(--ink-black);
    font-family: 'Albert Sans', sans-serif;
    font-weight: 400;
    overflow-x: hidden;
}

/* Kinetic Sections */
.kinetic-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    overflow: hidden;
}

/* Kinetic Words */
.kinetic-word {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(4rem, 12vw, 10rem);
    text-transform: uppercase;
    color: var(--ink-black);
    position: absolute;
    white-space: nowrap;
    opacity: 0.08;
    z-index: 0;
}
.kw-left {
    top: 20%;
    animation: slideLeft 20s linear infinite;
}
.kw-right {
    top: 55%;
    animation: slideRight 40s linear infinite;
}
.kw-oscillate {
    top: 15%;
    animation: oscillate 8s ease-in-out infinite;
}
.kw-scale {
    top: 20%;
    animation: pulseScale 4s ease-in-out infinite;
}

@keyframes slideLeft {
    0% { transform: translateX(100vw); }
    100% { transform: translateX(-100%); }
}
@keyframes slideRight {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100vw); }
}
@keyframes oscillate {
    0%, 100% { transform: translateX(-30vw); }
    50% { transform: translateX(30vw); }
}
@keyframes pulseScale {
    0%, 100% { transform: scale(1); opacity: 0.08; }
    50% { transform: scale(1.3); opacity: 0.12; }
}

/* Speed Pair */
.speed-pair {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}
.speed-word {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(3rem, 8vw, 7rem);
    text-transform: uppercase;
    position: absolute;
    opacity: 0.06;
}
.fast {
    top: 25%;
    color: var(--velocity-red);
    animation: slideLeft 10s linear infinite;
}
.slow {
    top: 65%;
    color: var(--accent-blue);
    animation: slideLeft 30s linear infinite;
}

/* Body Content */
.hero-body,
.section-body-wrap {
    position: relative;
    z-index: 1;
    max-width: 560px;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.hero-body.visible,
.section-body-wrap.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Typography */
.section-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    text-transform: uppercase;
    color: var(--ink-black);
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
}
.body-text {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--mid-gray);
}
.velocity-label {
    display: inline-block;
    margin-top: 1.5rem;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--velocity-red);
    letter-spacing: 0.1em;
    opacity: 0.6;
}

/* Section borders */
#motion { border-top: 1px solid var(--near-white); }
#frame { border-top: 1px solid var(--near-white); }
#time { border-top: 1px solid var(--near-white); }

/* Footer */
#footer {
    text-align: center;
    padding: 4rem 2rem;
    border-top: 1px solid var(--near-white);
}
.footer-text {
    font-size: 0.8rem;
    color: var(--soft-gray);
    opacity: 0.4;
}

@media (max-width: 600px) {
    .kinetic-section { padding: 3rem 1.5rem; }
    .kinetic-word { font-size: clamp(3rem, 15vw, 6rem); }
}