/* hil.st - Kinetic Typography */

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

:root {
    --void-black: #0A0A0A;
    --ivory-light: #F5F5F5;
    --signal-red: #E63946;
    --deep-navy: #1D3557;
    --maize-gold: #F4A261;
    --stone-gray: #6C757D;
    --pure-white: #FFFFFF;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background: var(--void-black);
}

.section {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

/* Hero */
#hero {
    background: var(--void-black);
}

.hero-word {
    font-weight: 900;
    font-size: clamp(8rem, 20vw, 16rem);
    letter-spacing: -0.04em;
    color: var(--ivory-light);
    line-height: 1;
    display: flex;
    align-items: baseline;
}

.hero-word .letter {
    display: inline-block;
    transform: translateY(-100vh);
    opacity: 0;
    animation: letter-drop 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
    animation-delay: var(--delay);
}

@keyframes letter-drop {
    0% {
        transform: translateY(-100vh);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Statement sections */
.statement-section {
    padding: 0;
}

#section-2 {
    background: var(--signal-red);
    color: var(--pure-white);
}

#section-3 {
    background: var(--deep-navy);
    color: var(--pure-white);
}

#section-4 {
    background: var(--maize-gold);
    color: var(--pure-white);
}

.statement {
    font-weight: 800;
    font-size: clamp(4rem, 10vw, 10rem);
    letter-spacing: -0.03em;
    text-align: center;
    line-height: 1.1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1em;
}

.statement .word {
    display: inline-flex;
}

.statement .letter {
    display: inline-block;
}

/* Cascade animation (section 2) */
[data-anim="cascade"] .letter {
    opacity: 0;
    transform: translateY(-80px);
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.55, 0, 1, 0.45);
}

[data-anim="cascade"].animated .letter {
    opacity: 1;
    transform: translateY(0);
}

/* Slide alternate (section 3) */
[data-anim="slide-alt"] .slide-word {
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-anim="slide-alt"] .slide-word:nth-child(odd) {
    transform: translateX(-100px);
}

[data-anim="slide-alt"] .slide-word:nth-child(even) {
    transform: translateX(100px);
}

[data-anim="slide-alt"].animated .slide-word {
    opacity: 1;
    transform: translateX(0);
}

/* Rotate animation (section 4) */
[data-anim="rotate"] .letter {
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

[data-anim="rotate"].animated .letter {
    opacity: 1;
    transform: rotate(0deg);
}

/* List Section */
#list-section {
    background: var(--void-black);
    height: auto;
    min-height: 100vh;
    padding: 8vh 0;
}

.list-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.list-item {
    font-weight: 300;
    font-size: clamp(2rem, 6vw, 5rem);
    color: var(--ivory-light);
    cursor: default;
    transition: font-weight 0.2s ease-in-out, opacity 0.2s ease-in-out;
    font-variation-settings: 'wght' 300;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

.list-item.active {
    font-variation-settings: 'wght' 900;
}

.list-item.dimmed {
    font-variation-settings: 'wght' 200;
    opacity: 0.6;
}

/* Footer */
#footer-section {
    background: var(--void-black);
    height: 50vh;
}

.footer-period {
    font-weight: 100;
    font-size: 30vw;
    color: var(--stone-gray);
    line-height: 1;
    animation: period-breathe 4s ease-in-out infinite;
}

@keyframes period-breathe {
    0% { opacity: 0.4; }
    50% { opacity: 0.8; }
    100% { opacity: 0.4; }
}