body {
    margin: 0;
    background-color: #0a0f1a;
    font-family: Arial, Helvetica, sans-serif;
    cursor: none;
}

a,
button,
.logo h1 {
    cursor: none;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    /* background: linear-gradient(135deg, #020617, #0f172a, #0ea5e9); */
    background-color: #0f172a;
    color: white;

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 18px 40px;
    /* border-radius: 900px; */
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.logo h1 {
    margin: 0;
    font-size: 20px;
    letter-spacing: 1px;
    font-weight: bold;
    white-space: nowrap;
}

nav {
    display: flex;
    align-items: stretch;
    gap: 18px;
}

nav a {
    position: relative;
    display: flex;
    align-items: center;
    text-align: center;
    color: #dbeafe;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    /* max-width: 120px; */

    padding: 8px 12px;
    border-radius: 8px;

    transition: 0.25s;
}

nav a.active {
    background-color: transparent;
    color: white;
}

nav a:hover {
    background-color: rgba(14, 165, 233, 0.25);
    color: white;
    transform: translateY(-2px);
}

nav a.active::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 12px;
    right: 12px;
    height: 3px;
    background-color: #0ea5e9;
    border-radius: 4px;
    box-shadow: 0 -1px 8px rgba(14, 165, 233, 0.8);
}

main {
    margin-top: 76px;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 70vh;
    padding: 0px 60px;
    box-sizing: border-box;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;

    background:
        radial-gradient(circle at 85% 20%, rgba(14, 165, 233, 0.28), transparent 28%),
        linear-gradient(135deg, #020617, #0f172a 55%, #082f49);

    color: white;
}

.hero-text {
    max-width: 650px;
}

.hero-label {
    color: #38bdf8;
    font-size: 14px;
    font-weight: bold;
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.hero h2 {
    font-size: 45px;
    line-height: 1.1;
    margin: 0 0 24px;
}

.hero-text p {
    color: #cbd5e1;
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 30px;
}

.hero-visual {
    width: 600px;
    height: 600px;

    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hero-icon-card {
    width: 460px;
    height: 460px;

    border: 1px solid rgba(56, 189, 248, 0.5);
    border-radius: 28px;

    background: rgba(15, 23, 42, 0.85);
    box-shadow:
        0 0 35px rgba(14, 165, 233, 0.35),
        inset 0 0 25px rgba(56, 189, 248, 0.12);

    display: flex;
    align-items: center;
    justify-content: center;

    color: #38bdf8;
    font-weight: bold;
    letter-spacing: 1px;
}

.hero-icon {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.hero-icon img,
.hero-icon svg {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ===== GLOSSARY SECTIONS ===== */
.glossary-section {
    padding: 80px 60px;
}

.section-header {
    margin-bottom: 50px;
    max-width: 800px;
}

.section-header h2 {
    font-size: 38px;
    color: #f1f5f9;
    margin: 16px 0 16px;
    line-height: 1.2;
}

.section-desc {
    font-size: 17px;
    color: #94a3b8;
    line-height: 1.7;
    margin: 0;
}

.glossary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr));
    grid-auto-flow: dense;
    grid-auto-rows: minmax(210px, auto);
    gap: 24px;
    align-items: stretch;
}

.glossary-card {
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(56, 189, 248, 0.12);
    border-radius: 16px;
    padding: 28px 28px 28px 32px;
    position: relative;
    overflow: hidden;
    min-height: 210px;
    box-sizing: border-box;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    align-content: start;

    /* Hidden by default, animated in when visible */
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.glossary-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.glossary-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
    border-color: rgba(56, 189, 248, 0.35);
}

.glossary-card.is-expanded {
    grid-column: span 2;
    grid-row: span 2;
    grid-template-columns: var(--card-main-width, minmax(0, 1fr)) minmax(220px, 1fr);
    align-content: stretch;
    min-height: 444px;
    background: rgba(15, 23, 42, 0.9);
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow: 0 18px 50px rgba(14, 165, 233, 0.18);
}

.glossary-card.is-expanded:hover {
    transform: translateY(0);
}

.card-main {
    min-width: 0;
    transform-origin: top left;
    will-change: transform;
}

.card-extra {
    display: none;
    min-width: 0;
    min-height: 100%;
    border-radius: 14px;
    border: 1px solid rgba(56, 189, 248, 0.18);
    background:
        linear-gradient(135deg, rgba(56, 189, 248, 0.18), rgba(15, 23, 42, 0.16)),
        rgba(2, 6, 23, 0.38);
    overflow: hidden;
    position: relative;
}

.glossary-card.is-expanded .card-extra {
    display: block;
}

.card-extra img {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 100%;
    object-fit: cover;
}

.card-extra img[src$=".svg"] {
    box-sizing: border-box;
    padding: 32px;
    object-fit: contain;
}

.card-extra img[src$="information.png"],
.card-extra img[src$="lome.png"] {
    object-fit: contain;
    background: rgba(2, 6, 23, 0.32);
}

.glossary-card[data-extra-side="left"].is-expanded .card-extra {
    order: -1;
}

.glossary-card[data-extra-side="left"].is-expanded {
    grid-template-columns: minmax(220px, 1fr) var(--card-main-width, minmax(0, 1fr));
}

.second-section .card-extra {
    border-color: rgba(167, 139, 250, 0.24);
    background:
        linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(15, 23, 42, 0.16)),
        rgba(2, 6, 23, 0.38);
}

.third-section .card-extra {
    border-color: rgba(52, 211, 153, 0.24);
    background:
        linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(15, 23, 42, 0.16)),
        rgba(2, 6, 23, 0.38);
}

.card-accent {
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #0ea5e9, #38bdf8);
    border-radius: 4px 0 0 4px;
}

.second-accent {
    background: linear-gradient(180deg, #8b5cf6, #a78bfa);
}

.third-accent {
    background: linear-gradient(180deg, #10b981, #34d399);
}

.glossary-card h3 {
    font-size: 18px;
    color: #e2e8f0;
    margin: 0 0 12px;
    font-weight: 700;
}

.glossary-card p {
    font-size: 15px;
    color: #94a3b8;
    line-height: 1.65;
    margin: 0;
}

.glossary-card strong {
    color: #cbd5e1;
}

.second-section {
    background: linear-gradient(180deg, transparent, rgba(139, 92, 246, 0.03) 50%, transparent);
}

.second-section .section-header h2 {
    color: #f1f5f9;
}

.third-section {
    background: linear-gradient(180deg, transparent, rgba(16, 185, 129, 0.03) 50%, transparent);
}

.third-section .section-header h2 {
    color: #f1f5f9;
}

html {
    font-size: 1vmin;
}

.cursor {
    --corner-size: 1rem;
    --corner-border-width: 0.4rem;
    --corner-box-size: calc(var(--corner-size) + var(--corner-border-width));
    --corner-gap: 2rem;
    --corner-tl-x: calc(var(--corner-gap) * -1);
    --corner-tl-y: calc(var(--corner-gap) * -1);
    --corner-tr-x: calc(var(--corner-gap) - var(--corner-box-size));
    --corner-tr-y: calc(var(--corner-gap) * -1);
    --corner-br-x: calc(var(--corner-gap) - var(--corner-box-size));
    --corner-br-y: calc(var(--corner-gap) - var(--corner-box-size));
    --corner-bl-x: calc(var(--corner-gap) * -1);
    --corner-bl-y: calc(var(--corner-gap) - var(--corner-box-size));
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    pointer-events: none;
    will-change: transform;

    z-index: 10000;
}

.cursor-dot-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    pointer-events: none;
    z-index: 10001;
    mix-blend-mode: difference;
    will-change: transform;
}

.cursor-dot {
    position: absolute;
    left: -2px;
    top: -2px;
    width: 4px;
    height: 4px;
    border-radius: 9999px;
    background-color: white;
}

.cursor-press-ring {
    position: absolute;
    left: 0;
    top: 0;
    width: 10px;
    height: 10px;
    border: 1px solid white;
    border-radius: 9999px;
    display: none;
    transform: translate(-50%, -50%);
}

.cursor-dot-layer.is-pressed .cursor-press-ring {
    display: block;
}

.cursor-spin {
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    transform-origin: center center;
    will-change: transform;
}

.cursor-spin div {
    position: absolute;
    width: var(--corner-size);
    height: var(--corner-size);
    border-width: var(--corner-border-width);
    border-color: #dadfa3;
    will-change: transform;
}

.cursor-spin div:nth-child(1) {
    border-top-style: solid;
    border-left-style: solid;
    transform: translate(var(--corner-tl-x), var(--corner-tl-y));
}

.cursor-spin div:nth-child(2) {
    border-top-style: solid;
    border-right-style: solid;
    transform: translate(var(--corner-tr-x), var(--corner-tr-y));
}

.cursor-spin div:nth-child(3) {
    border-bottom-style: solid;
    border-left-style: solid;
    transform: translate(var(--corner-bl-x), var(--corner-bl-y));
}

.cursor-spin div:nth-child(4) {
    border-bottom-style: solid;
    border-right-style: solid;
    transform: translate(var(--corner-br-x), var(--corner-br-y));
}

/* ===== FOOTER ===== */
footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 40px;
    border-top: 1px solid rgba(56, 189, 248, 0.1);
    background: #060a14;
}

footer p,
footer a {
    margin: 0;
    color: #475569;
    font-size: 14px;
    letter-spacing: 0.5px;
}