:root {
    --edge: rgba(255, 255, 255, 0.11);
    --edge-soft: rgba(255, 255, 255, 0.06);
    --glow: rgba(255, 255, 255, 0.06);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", "Satoshi", "General Sans", "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at 8% 5%, rgba(255, 255, 255, 0.06) 0%, transparent 30%),
        radial-gradient(circle at 90% 10%, rgba(255, 255, 255, 0.03) 0%, transparent 28%),
        #060607;
}

a {
    text-decoration: none;
}

.shell {
    width: min(1120px, 100%);
    margin: 0 auto;
}

.demo-section {
    border: 1px solid var(--edge-soft);
    box-shadow: 0 24px 54px rgba(0, 0, 0, 0.32), inset 0 1px 0 var(--glow);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.hero-title {
    margin: 0;
    font-size: clamp(2rem, 4.7vw, 3.8rem);
    line-height: 1.03;
    letter-spacing: -0.04em;
    max-width: 14ch;
}

.hero-subtitle {
    margin: 0;
    max-width: 56ch;
}

.eyebrow {
    margin: 0;
    font-size: 0.77rem;
}

.brand-orb {
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #f5f5f7, #8f8f97);
    box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.04);
}

.nav-links {
    flex-wrap: wrap;
}

.nav-links a,
.cta-link,
.apply-btn,
.style-tag,
.feature-card,
.copy-btn,
.demo-section {
    transition: transform 0.22s ease, box-shadow 0.22s ease, color 0.22s ease, background-color 0.22s ease;
}

.nav-links a:hover {
    color: #fff !important;
}

.cta-link,
.apply-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.apply-btn {
    gap: 0.45rem;
}

.apply-btn-icon {
    display: inline-block;
    font-size: 0.92rem;
    line-height: 1;
}

.apply-btn.is-updating .apply-btn-icon {
    animation: apply-reload-spin 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.apply-btn.is-updating {
    animation: apply-btn-pulse 560ms cubic-bezier(0.22, 1, 0.36, 1);
}

.cta-link:hover,
.apply-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 25px rgba(255, 255, 255, 0.16);
}

.feature-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.feature-card {
    border: 1px solid var(--edge);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.34);
}

.border-demo {
    border-style: solid;
    border-color: rgba(255, 255, 255, 0.28);
}

.dot {
    width: 1rem;
    height: 1rem;
    border-radius: 999px;
}

.utility-code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.84rem;
    color: #d7d7df;
    background: #0b0c0f;
    border: 1px solid var(--edge);
    border-radius: 0.62rem;
    padding: 0.35rem 0.6rem;
    overflow-wrap: anywhere;
}

.copy-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: 1px solid var(--edge);
    border-radius: 0.62rem;
    background: #0b0c0f;
    color: #c8c8cf;
    cursor: pointer;
}

.copy-btn:hover {
    transform: scale(1.06);
}

.copy-btn svg {
    width: 0.95rem;
    height: 0.95rem;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.5;
}

.copy-feedback {
    position: absolute;
    right: calc(100% + 0.4rem);
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    pointer-events: none;
    font-size: 0.72rem;
    color: #f4f4f7;
    background: #17181d;
    border: 1px solid var(--edge);
    border-radius: 0.45rem;
    padding: 0.22rem 0.45rem;
}

.copy-btn.is-copied .copy-feedback {
    animation: fade-copy 1.1s ease;
}

.section-head {
    flex-wrap: wrap;
}

.section-head h2,
.section-head p {
    margin: 0;
}

.playground-input-wrap {
    flex-wrap: wrap;
}

.playground-input {
    border: 1px solid var(--edge);
    width: min(100%, 33rem);
    outline: none;
}

.playground-input:focus {
    border-color: rgba(255, 255, 255, 0.42);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.08);
}

.playground-preview {
    min-height: 6.5rem;
    display: flex;
    align-items: center;
}

.copy-playground-btn.is-copied {
    box-shadow: 0 0 0.8rem rgba(255, 255, 255, 0.2);
}

.tag-wrap {
    flex-wrap: wrap;
}

.quick-demo-grid {
    display: grid;
    gap: 0.8rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.quick-demo-card {
    border: 1px solid var(--edge);
}

.quick-demo-card p {
    margin-top: 0;
}

.utility-inline {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.79rem;
    color: #d7d7df;
}

.style-tag {
    border: 1px solid var(--edge);
}

.style-tag:hover {
    transform: translateY(-1px);
    color: #fff !important;
}

.footer-link {
    display: inline-block;
    margin-left: 0.35rem;
}

.footer-link:hover {
    color: #ffffff !important;
}

@keyframes fade-copy {
    0% {
        opacity: 0;
        transform: translateY(-50%) translateX(3px);
    }
    20% {
        opacity: 1;
        transform: translateY(-50%) translateX(0);
    }
    82% {
        opacity: 1;
        transform: translateY(-50%) translateX(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-50%) translateX(3px);
    }
}

@media (max-width: 780px) {
    .hero-title {
        max-width: 18ch;
    }

    .nav-links {
        gap: 0.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@keyframes apply-reload-spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes apply-btn-pulse {
    0% {
        transform: translateY(0) scale(1);
        box-shadow: 0 0 0 rgba(255, 255, 255, 0);
    }
    45% {
        transform: translateY(-1px) scale(1.03);
        box-shadow: 0 0 0.95rem rgba(255, 255, 255, 0.2);
    }
    100% {
        transform: translateY(0) scale(1);
        box-shadow: 0 0 0 rgba(255, 255, 255, 0);
    }
}