/* -------------------------
   DESIGN SYSTEM
------------------------- */

:root {
    --background: #f3f5f8;
    --surface: #ffffff;
    --surface-alt: #e9edf3;

    --text: #172033;
    --muted: #687386;

    --blue: #2457a6;
    --blue-dark: #173d78;

    --border: #d8dee8;

    --shadow:
        0 10px 30px rgba(20, 35, 60, 0.06);

    --radius: 12px;
}


/* DARK THEME */

[data-theme="dark"] {
    --background: #080b10;
    --surface: #11151c;
    --surface-alt: #171c25;

    --text: #edf1f7;
    --muted: #8e99a9;

    --blue: #5b91ed;
    --blue-dark: #86adf4;

    --border: #252d39;

    --shadow:
        0 15px 40px rgba(0, 0, 0, 0.35);
}


/* -------------------------
   GLOBAL
------------------------- */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;

    background: var(--background);
    color: var(--text);

    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    line-height: 1.6;

    transition:
        background 0.25s ease,
        color 0.25s ease;
}

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

.container {
    width: min(1100px, calc(100% - 40px));
    margin: 0 auto;
}


/* -------------------------
   HEADER
------------------------- */

.site-header {
    height: 72px;

    border-bottom: 1px solid var(--border);

    background: var(--surface);
}

.nav {
    height: 100%;

    display: flex;
    align-items: center;
    gap: 36px;
}

.logo {
    margin-right: auto;

    font-size: 19px;
    font-weight: 750;
    letter-spacing: -0.5px;
}

.logo::before {
    content: "\25CA";
    display: inline-block;
    margin-right: 20px;
    color: var(--blue);
}

nav {
    display: flex;
    gap: 28px;
}

nav a {
    color: var(--muted);

    font-size: 14px;
    font-weight: 500;

    transition: color 0.2s;
}

nav a:hover {
    color: var(--blue);
}


/* -------------------------
   THEME BUTTON
------------------------- */

.theme-button {
    width: 38px;
    height: 38px;

    display: grid;
    place-items: center;

    border: 1px solid var(--border);
    border-radius: 9px;

    background: var(--surface);
    color: var(--text);

    font-size: 18px;

    cursor: pointer;

    transition:
        background 0.2s,
        border-color 0.2s,
        transform 0.2s;
}

.theme-button:hover {
    background: var(--surface-alt);
    transform: translateY(-1px);
}


/* -------------------------
   HERO
------------------------- */

.hero {
    min-height: 570px;

    display: flex;
    align-items: center;

    border-bottom: 1px solid var(--border);
}

.hero-content {
    max-width: 750px;
}

.eyebrow {
    margin: 0 0 14px;

    color: var(--blue);

    font-size: 12px;
    font-weight: 750;

    letter-spacing: 1.8px;
}

.hero h1 {
    margin: 0;

    font-family: Georgia, "Times New Roman", serif;

    font-size: clamp(45px, 6vw, 76px);
    line-height: 1.04;
    letter-spacing: -3px;
}

.hero-text {
    max-width: 620px;

    margin: 28px 0;

    color: var(--muted);

    font-size: 18px;
    line-height: 1.7;
}


/* -------------------------
   BUTTONS
------------------------- */

.hero-actions {
    display: flex;
    gap: 12px;
}

.button {
    display: inline-flex;

    padding: 11px 17px;

    border-radius: 8px;

    font-size: 14px;
    font-weight: 650;

    transition:
        transform 0.2s,
        background 0.2s;
}

.button:hover {
    transform: translateY(-2px);
}

.primary {
    background: var(--blue);
    color: white;
}

.primary:hover {
    background: var(--blue-dark);
}

.secondary {
    border: 1px solid var(--border);
    background: var(--surface);
}


/* -------------------------
   ARTICLES
------------------------- */

.articles {
    padding: 100px 0;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;

    margin-bottom: 35px;
}

.section-heading h2 {
    margin: 0;

    font-family: Georgia, "Times New Roman", serif;

    font-size: 38px;
    letter-spacing: -1.5px;
}

.view-all {
    color: var(--blue);

    font-size: 14px;
    font-weight: 650;
}

.article-grid {
    display: grid;

    grid-template-columns:
        1.3fr
        1fr
        1fr;

    gap: 18px;
}

.article-card {
    min-height: 330px;

    display: flex;
    flex-direction: column;

    padding: 28px;

    background: var(--surface);

    border: 1px solid var(--border);
    border-radius: var(--radius);

    box-shadow: var(--shadow);

    transition:
        transform 0.2s,
        border-color 0.2s;
}

.article-card:hover {
    transform: translateY(-4px);
    border-color: var(--blue);
}

.article-card.featured {
    background:
        linear-gradient(
            145deg,
            var(--surface),
            var(--surface-alt)
        );
}

.article-meta {
    display: flex;
    justify-content: space-between;

    color: var(--muted);

    font-size: 11px;
    font-weight: 700;

    letter-spacing: 1px;
}

.article-meta span:first-child {
    color: var(--blue);
}

.article-card h3 {
    margin: 30px 0 14px;

    font-family: Georgia, "Times New Roman", serif;

    font-size: 25px;
    line-height: 1.2;
    letter-spacing: -0.6px;
}

.article-card p {
    margin: 0;

    color: var(--muted);

    font-size: 14px;
}

.article-link {
    margin-top: auto;

    color: var(--blue);

    font-size: 13px;
    font-weight: 700;
}


/* -------------------------
   ABOUT
------------------------- */

.about {
    padding-bottom: 100px;
}

.about-box {
    display: grid;

    grid-template-columns: 1fr 1fr;
    gap: 60px;

    padding: 55px;

    background: var(--surface-alt);

    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.about-box h2 {
    margin: 0;

    font-family: Georgia, "Times New Roman", serif;

    font-size: 36px;
    line-height: 1.15;
}

.about-box > p {
    margin: 0;

    color: var(--muted);

    font-size: 16px;
}

.about-box .button {
    width: fit-content;
    align-self: end;
}


/* -------------------------
   FOOTER
------------------------- */

.site-footer {
    border-top: 1px solid var(--border);

    padding: 30px 0;

    color: var(--muted);

    font-size: 13px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
}

.footer-content div {
    display: flex;
    gap: 20px;
}

.footer-content a:hover {
    color: var(--blue);
}


/* -------------------------
   MOBILE
------------------------- */

@media (max-width: 750px) {

    nav {
        display: none;
    }

    .hero {
        min-height: 500px;
    }

    .hero h1 {
        font-size: 48px;
        letter-spacing: -2px;
    }

    .hero-text {
        font-size: 16px;
    }

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

    .about-box {
        grid-template-columns: 1fr;

        padding: 30px;

        gap: 25px;
    }

    .about-box .button {
        align-self: start;
    }

    .section-heading {
        align-items: start;
    }

    .view-all {
        margin-top: 8px;
    }

    .footer-content {
        flex-direction: column;
        gap: 15px;
    }
    blockquote {
    margin: 1.5rem 0;
    padding: 0.8rem 1.2rem;
    border-left: 4px solid #9ca3af;
    background: #f3f4f6;
    color: #4b5563;
    font-style: italic;
    border-radius: 0 6px 6px 0;
    }

    blockquote p {
    margin: 0;
}
}