:root {
    --bg: #111216;
    --bg-soft: #191a20;
    --paper: #f4f4f0;
    --white: #ffffff;
    --ink: #111216;
    --muted: #696a72;
    --border: #d9d9d3;

    --primary: #7357ff;
    --primary-soft: #9c8cff;
    --accent: #e8ff43;

    --philosophy: #7657ff;
    --history: #e46f30;
    --sociology: #dd376e;
    --geography: #29a870;
    --religion: #396ede;
    --life: #d8b820;

    --max-width: 1240px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: "Inter", sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

.topbar {
    min-height: 76px;
    padding: 0 max(24px, calc((100vw - var(--max-width)) / 2));
    background: var(--bg);
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 38px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-family: "Space Grotesk", sans-serif;
    font-weight: 700;
    letter-spacing: -.05em;
    white-space: nowrap;
}

.brand span {
    font-size: 22px;
}

.brand strong {
    background: var(--accent);
    color: var(--ink);
    padding: 5px 8px;
    font-size: 21px;
    transform: rotate(-2deg);
}

.desktop-nav {
    display: flex;
    gap: 30px;
    margin-left: auto;
}

.desktop-nav a,
.about-link {
    color: #c8c8cf;
    font-size: 14px;
    font-weight: 600;
}

.desktop-nav a:hover,
.desktop-nav a.active,
.about-link:hover {
    color: var(--white);
}

.about-link {
    margin-left: 15px;
}

.hero {
    background: var(--bg);
    color: var(--white);
    position: relative;
    overflow: hidden;
    min-height: 630px;
    display: flex;
    align-items: center;
}

.hero-content {
    width: min(var(--max-width), calc(100% - 48px));
    margin: 0 auto;
    padding: 84px 0 100px;
    position: relative;
    z-index: 3;
}

.eyebrow {
    color: var(--accent);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .14em;
    margin-bottom: 24px;
}

.hero h1 {
    font-family: "Space Grotesk", sans-serif;
    font-size: clamp(60px, 8vw, 112px);
    line-height: .87;
    letter-spacing: -.07em;
    margin: 0;
    max-width: 960px;
}

.hero h1 span {
    color: var(--primary-soft);
}

.hero-description {
    color: #bcbcc5;
    line-height: 1.7;
    max-width: 620px;
    font-size: 17px;
    margin: 34px 0;
}

.search-box {
    background: var(--white);
    display: flex;
    align-items: center;
    max-width: 850px;
    min-height: 68px;
    padding-left: 20px;
    border: 3px solid transparent;
}

.search-box:focus-within {
    border-color: var(--accent);
}

.search-icon {
    color: var(--ink);
    font-size: 30px;
    margin-right: 12px;
}

.search-box input {
    width: 100%;
    border: none;
    outline: none;
    color: var(--ink);
    font-size: 16px;
    min-width: 0;
}

.search-box button {
    align-self: stretch;
    padding: 0 32px;
    border: 0;
    background: var(--accent);
    color: var(--ink);
    font-weight: 800;
}

.discipline-links {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-top: 20px;
}

.discipline-links button {
    background: transparent;
    border: 1px solid #44454e;
    color: #d0d0d7;
    padding: 9px 13px;
}

.discipline-links button:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.hero-decoration {
    position: absolute;
    border: 1px solid rgba(255,255,255,.06);
    transform: rotate(35deg);
}

.decoration-one {
    width: 430px;
    height: 430px;
    right: -140px;
    top: 40px;
}

.decoration-two {
    width: 650px;
    height: 650px;
    right: -210px;
    bottom: -480px;
}

.section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 105px 24px;
}

.light-section {
    max-width: none;
    background: var(--paper);
    padding-left: max(24px, calc((100vw - var(--max-width)) / 2));
    padding-right: max(24px, calc((100vw - var(--max-width)) / 2));
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 50px;
    margin-bottom: 48px;
}

.section-heading > div {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.section-number {
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .08em;
}

.section-heading h2 {
    font-family: "Space Grotesk", sans-serif;
    font-size: clamp(38px, 5vw, 60px);
    letter-spacing: -.055em;
    line-height: .95;
    margin: 0;
}

.section-heading p {
    color: var(--muted);
    max-width: 420px;
    line-height: 1.65;
    margin: 0;
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--border);
    border-left: 1px solid var(--border);
}

.resource-card {
    min-height: 250px;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 26px;
    position: relative;
    transition: .2s ease;
}

.resource-card:hover {
    background: var(--white);
    transform: translateY(-4px);
}

.resource-index {
    font-size: 11px;
    color: var(--muted);
}

.resource-card h3 {
    font-family: "Space Grotesk", sans-serif;
    font-size: 28px;
    letter-spacing: -.04em;
    margin: 50px 0 12px;
}

.resource-card p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.6;
    max-width: 230px;
}

.card-arrow {
    position: absolute;
    right: 25px;
    bottom: 22px;
    font-size: 27px;
}

.featured-resource {
    background: var(--accent);
}

.featured-resource p,
.featured-resource .resource-index {
    color: #34351c;
}

.dark-resource {
    background: var(--bg);
    color: var(--white);
}

.dark-resource p {
    color: #aaaab3;
}

.materials-section {
    padding-top: 110px;
    padding-bottom: 120px;
}

.text-link {
    font-weight: 700;
    border-bottom: 1px solid var(--ink);
    padding-bottom: 4px;
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.material-card {
    background: var(--white);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: .2s ease;
}

.material-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,.08);
}

.material-cover {
    min-height: 260px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: var(--white);
}

.material-cover span {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .11em;
}

.material-cover strong {
    font-family: "Space Grotesk", sans-serif;
    font-size: 35px;
    line-height: .95;
    letter-spacing: -.06em;
}

.cover-filosofia {
    background: var(--philosophy);
}

.cover-historia {
    background: var(--history);
}

.cover-sociologia {
    background: var(--sociology);
}

.cover-geografia {
    background: var(--geography);
}

.material-info {
    padding: 22px;
}

.material-tag {
    color: var(--primary);
    font-weight: 800;
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.material-info h3 {
    font-family: "Space Grotesk", sans-serif;
    margin: 10px 0;
    font-size: 21px;
    letter-spacing: -.03em;
}

.material-info p {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.material-link {
    display: inline-block;
    font-size: 13px;
    font-weight: 800;
    margin-top: 10px;
}

.lesson-builder {
    background: var(--primary);
    color: var(--white);
    padding: 100px max(24px, calc((100vw - var(--max-width)) / 2));
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    gap: 90px;
}

.inverse {
    color: var(--accent);
}

.lesson-copy h2 {
    font-family: "Space Grotesk", sans-serif;
    font-size: clamp(60px, 7vw, 90px);
    line-height: .86;
    letter-spacing: -.07em;
    margin: 18px 0 30px;
}

.lesson-copy p {
    color: #ddd9ff;
    line-height: 1.7;
    max-width: 440px;
}

.lesson-form {
    display: grid;
    gap: 18px;
}

.lesson-form label {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.lesson-form select {
    display: block;
    width: 100%;
    margin-top: 8px;
    min-height: 54px;
    border: 0;
    background: var(--white);
    padding: 0 16px;
    color: var(--ink);
}

.primary-button {
    min-height: 58px;
    border: 0;
    background: var(--accent);
    color: var(--ink);
    font-weight: 900;
    text-transform: uppercase;
    margin-top: 8px;
}

.lesson-result {
    background: rgba(0,0,0,.18);
    padding: 18px;
    line-height: 1.6;
}

.inclusive-section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 120px 24px;
}

.inclusive-badge {
    display: inline-block;
    background: var(--ink);
    color: var(--accent);
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 900;
    letter-spacing: .12em;
}

.inclusive-content {
    margin-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 60px;
}

.inclusive-content h2 {
    font-family: "Space Grotesk", sans-serif;
    font-size: clamp(50px, 6vw, 78px);
    line-height: .9;
    letter-spacing: -.065em;
    margin: 0 0 24px;
}

.inclusive-content p {
    max-width: 650px;
    color: var(--muted);
    line-height: 1.7;
}

.outline-button {
    flex: 0 0 auto;
    border: 2px solid var(--ink);
    padding: 17px 20px;
    font-weight: 800;
}

.outline-button:hover {
    background: var(--ink);
    color: var(--white);
}

.collection-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.collection-card {
    min-height: 320px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    color: var(--white);
}

.collection-card span {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .1em;
}

.collection-card h3 {
    font-family: "Space Grotesk", sans-serif;
    font-size: 42px;
    letter-spacing: -.06em;
    line-height: .95;
    margin-top: auto;
}

.collection-card strong {
    font-size: 13px;
}

.collection-purple {
    background: var(--philosophy);
}

.collection-orange {
    background: var(--history);
}

.collection-pink {
    background: var(--sociology);
}

footer {
    background: var(--bg);
    color: var(--white);
    padding: 80px max(24px, calc((100vw - var(--max-width)) / 2));
    display: grid;
    grid-template-columns: 1.6fr .8fr 1fr;
    gap: 60px;
    position: relative;
}

.footer-brand p {
    color: #92939c;
    font-size: 14px;
    margin-top: 20px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 13px;
}

.footer-links a {
    color: #babac2;
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--accent);
}

.creator {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.creator > span:first-child {
    color: #7f8089;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .1em;
}

.creator strong {
    font-family: "Space Grotesk", sans-serif;
    font-size: 20px;
}

.filosofia-urbana {
    color: var(--accent);
    font-weight: 900;
    font-size: 12px;
    letter-spacing: .12em;
}

.copyright {
    grid-column: 1 / -1;
    border-top: 1px solid #2d2e35;
    padding-top: 28px;
    color: #72737c;
    font-size: 11px;
    letter-spacing: .08em;
}

.mobile-nav {
    display: none;
}

.simple-page {
    max-width: var(--max-width);
    margin: 0 auto;
    min-height: 70vh;
    padding: 100px 24px;
}

.simple-page .label {
    color: var(--primary);
    font-weight: 800;
    letter-spacing: .1em;
    font-size: 12px;
}

.simple-page h1 {
    font-family: "Space Grotesk", sans-serif;
    font-size: clamp(55px, 8vw, 96px);
    letter-spacing: -.07em;
    line-height: .9;
    margin: 18px 0;
}

.simple-page p {
    color: var(--muted);
    font-size: 17px;
    line-height: 1.7;
    max-width: 700px;
}

.back-button {
    display: inline-block;
    background: var(--ink);
    color: var(--white);
    padding: 15px 20px;
    margin-top: 26px;
    font-weight: 700;
}

@media (max-width: 980px) {

    .desktop-nav,
    .about-link {
        display: none;
    }

    .topbar {
        min-height: 65px;
    }

    .resource-grid,
    .materials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .lesson-builder {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .collection-grid {
        grid-template-columns: 1fr;
    }

    footer {
        grid-template-columns: 1fr 1fr;
        padding-bottom: 120px;
    }

    .mobile-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 30;
        background: var(--bg);
        border-top: 1px solid #34353c;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
    }

    .mobile-nav a {
        color: #a7a7af;
        min-height: 68px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3px;
        font-size: 10px;
    }

    .mobile-nav a span {
        font-size: 19px;
    }

    .mobile-nav a.active {
        color: var(--accent);
    }
}

@media (max-width: 640px) {

    .hero {
        min-height: auto;
    }

    .hero-content {
        width: calc(100% - 32px);
        padding: 65px 0 80px;
    }

    .hero h1 {
        font-size: 57px;
    }

    .hero-description {
        font-size: 15px;
    }

    .search-box {
        display: grid;
        grid-template-columns: 35px 1fr;
        padding: 12px;
    }

    .search-box button {
        grid-column: 1 / -1;
        min-height: 48px;
        margin-top: 10px;
    }

    .resource-grid,
    .materials-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding-top: 75px;
        padding-bottom: 75px;
    }

    .section-heading {
        display: block;
    }

    .section-heading p,
    .section-heading .text-link {
        display: block;
        margin-top: 25px;
    }

    .inclusive-content {
        display: block;
    }

    .outline-button {
        display: inline-block;
        margin-top: 26px;
    }

    footer {
        grid-template-columns: 1fr;
    }
}