/* ==========================================================================
   acero-inoxidable.co — sunlit monochrome studio (DESIGN.md ref: Prisma Labs)
   White canvas · Ink Black type · Signal Yellow single accent · Alert Magenta
   notification dot only · organic blobs · FLAT (no shadows, no gradients)
   Manrope (Cofo Sans substitute, 500/700) + system Arial/Helvetica body
   ========================================================================== */

@font-face {
    font-family: 'Manrope';
    src: url('/fonts/manrope-500.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Manrope';
    src: url('/fonts/manrope-700.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

:root {
    --ink: #0d0d0d;
    --paper: #ffffff;
    --graphite: #333333;
    --yellow: #ffd600;
    --magenta: #ff0062;

    --font-display: 'Manrope', ui-sans-serif, system-ui, sans-serif;
    --font-body: Arial, Helvetica, system-ui, sans-serif;

    --max-w: 1200px;
    --gap-block: clamp(84px, 10vw, 124px);
    --r-card: 10px;
    --r-btn: 16px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
}
img { max-width: 100%; height: auto; }
a { color: var(--ink); }
a:focus-visible, button:focus-visible, input:focus-visible {
    outline: 3px solid var(--ink);
    outline-offset: 2px;
}
h1, h2, h3, h4 { margin: 0 0 16px; font-family: var(--font-display); font-weight: 700; letter-spacing: -0.007em; }

.skip-link { position: absolute; left: -9999px; top: 0; background: var(--yellow); color: var(--ink); padding: 12px 24px; z-index: 200; }
.skip-link:focus { left: 12px; top: 12px; }

/* layout */
.frame { max-width: var(--max-w); margin: 0 auto; padding: 0 clamp(24px, 6vw, 60px); }
.frame-narrow { max-width: 780px; }
.block { padding: calc(var(--gap-block) / 2) 0; }
.block-tight { padding-top: 0; }

/* universal fallback classes (shared legal views + autor.php) */
.section { padding: calc(var(--gap-block) / 2) 0; }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 clamp(24px, 6vw, 60px); }
.container-narrow { max-width: 780px; }
.legal-updated { color: var(--graphite); font-size: 14px; }

/* type */
.h-display {
    font-size: clamp(38px, 6vw, 72px);
    line-height: 1.0;
    letter-spacing: -0.007em;
    font-weight: 700;
    margin: 0 0 24px;
}
.h-display-md { font-size: clamp(28px, 4vw, 44px); line-height: 1.05; }
.kicker {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 14px;
    letter-spacing: .12em;
    text-transform: uppercase;
    margin: 0 0 16px;
}
.lede { font-size: 18px; line-height: 1.5; color: var(--graphite); max-width: 560px; margin: 0 0 32px; }
.quiet { color: var(--graphite); max-width: 560px; }
.micro { font-size: 12px; color: var(--graphite); }

/* buttons — 16px radius non-negotiable, flat */
.btn-yell {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--yellow);
    color: var(--ink);
    border: 0;
    border-radius: var(--r-btn);
    padding: 14px 26px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 18px;
    text-decoration: none;
    cursor: pointer;
}
.btn-big { padding: 16px 32px; font-size: 20px; }
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--paper);
    color: var(--ink);
    border: 1px solid var(--ink);
    border-radius: var(--r-btn);
    padding: 13px 26px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    cursor: pointer;
}

/* header */
.head { background: var(--paper); }
.head-in { display: flex; align-items: center; gap: 32px; min-height: 76px; }
.lockup { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.lockup span { font-family: var(--font-display); font-weight: 500; font-size: 17px; letter-spacing: .02em; }
.lockup b { font-weight: 700; }
.mainnav { display: flex; align-items: center; gap: 24px; margin-left: auto; }
.mainnav-a {
    position: relative;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 16px;
    color: var(--ink);
    text-decoration: none;
    padding: 6px 2px;
}
.mainnav-a:hover, .mainnav-a.is-here { text-decoration: underline; text-decoration-color: var(--yellow); text-decoration-thickness: 3px; text-underline-offset: 5px; }
.ndot { position: absolute; top: 2px; right: -6px; width: 4px; height: 4px; border-radius: 50%; background: var(--magenta); }
.burger { display: none; }

/* hero + splits */
.split-2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.split-rev > .blob-stage { order: -1; }
.blob-stage { display: flex; justify-content: center; }
.blob-stage-sm .blob-svg { max-width: 340px; }
.blob-svg { width: 100%; max-width: 440px; height: auto; }

/* cards */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px; }
.card-line {
    display: block;
    background: var(--paper);
    border: 1px solid var(--graphite);
    border-radius: var(--r-card);
    padding: 26px;
    text-decoration: none;
    color: var(--ink);
}
.card-line h3, .card-post-title { font-size: 22px; line-height: 1.1; letter-spacing: -0.007em; margin: 10px 0; }
.card-line p { margin: 0 0 16px; font-size: 14px; line-height: 1.43; color: var(--graphite); }
.card-line:hover h3, .card-line:hover .card-post-title { text-decoration: underline; text-decoration-color: var(--yellow); text-decoration-thickness: 3px; text-underline-offset: 4px; }
.tab-yell {
    display: inline-block;
    background: var(--yellow);
    color: var(--ink);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 12px;
    letter-spacing: .08em;
    border-radius: 6px;
    padding: 5px 10px;
}
.card-cta { font-family: var(--font-display); font-weight: 700; font-size: 14px; }
.card-post a { display: flex; flex-direction: column; height: 100%; text-decoration: none; color: var(--ink); }
.card-post .card-cta { margin-top: auto; }
.card-img { border-radius: 6px; margin-bottom: 12px; aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }

.row-head { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

.check-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.check-list li { padding-left: 34px; position: relative; }
.check-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 2px;
    width: 20px;
    height: 20px;
    border-radius: 6px;
    background: var(--yellow);
}
.check-list li::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 7px;
    width: 8px;
    height: 5px;
    border-left: 2.5px solid var(--ink);
    border-bottom: 2.5px solid var(--ink);
    transform: rotate(-45deg);
}
.check-list b { font-family: var(--font-display); }

.empty-note { border: 1px solid var(--graphite); border-radius: var(--r-card); padding: clamp(28px, 5vw, 56px); }

/* breadcrumbs */
.breadcrumb { margin: 0 0 28px; font-size: 13px; }
.breadcrumb-list { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; }
.breadcrumb-list li + li::before { content: '→'; margin-right: 6px; color: var(--graphite); }
.breadcrumb-list a { color: var(--graphite); text-decoration: none; }
.breadcrumb-list a:hover { color: var(--ink); text-decoration: underline; }
.breadcrumb-list [aria-current] { color: var(--ink); }

/* article */
.article-title { max-width: 18ch; }
.article-head { margin-bottom: 36px; }
.byline { display: flex; align-items: center; gap: 12px; }
.byline-img { border-radius: 50%; }
.byline-col { display: flex; flex-direction: column; gap: 2px; }
.byline-a { font-family: var(--font-display); font-weight: 700; text-decoration: none; color: var(--ink); }
.byline-a:hover { text-decoration: underline; text-decoration-color: var(--yellow); text-decoration-thickness: 3px; }
.article-cover { margin: 0 0 36px; }
.article-cover img { border-radius: var(--r-card); width: 100%; display: block; }

.toc { border-top: 3px solid var(--yellow); border-bottom: 1px solid var(--graphite); padding: 20px 0; margin: 0 0 40px; }
.toc .kicker { margin-bottom: 10px; }
.toc-list { margin: 0; padding: 0 0 0 20px; columns: 2; column-gap: 40px; }
.toc-list li { margin: 6px 0; break-inside: avoid; font-size: 15px; }
.toc-list a { color: var(--ink); text-decoration: none; font-family: var(--font-display); font-weight: 500; }
.toc-list a:hover { text-decoration: underline; text-decoration-color: var(--yellow); text-decoration-thickness: 3px; }

/* prose */
.prose { font-size: 17px; line-height: 1.65; }
.prose h2 { font-size: clamp(26px, 3.4vw, 34px); margin: 48px 0 16px; scroll-margin-top: 24px; }
.prose h3 { font-size: 22px; margin: 36px 0 12px; scroll-margin-top: 24px; }
.prose h4 { font-size: 18px; margin: 28px 0 10px; scroll-margin-top: 24px; }
.prose p { margin: 0 0 18px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 26px; }
.prose li { margin: 6px 0; }
.prose a { color: var(--ink); text-decoration-color: var(--yellow); text-decoration-thickness: 2.5px; text-underline-offset: 3px; }
.prose img { border-radius: var(--r-card); margin: 8px 0; }
.prose blockquote {
    margin: 28px 0;
    padding: 22px 26px;
    background: var(--paper);
    border: 1px solid var(--graphite);
    border-left: 6px solid var(--yellow);
    border-radius: var(--r-card);
    font-size: 15px;
}
.prose blockquote p { margin: 0; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; }
.prose th, .prose td { text-align: left; padding: 12px 14px; border: 1px solid var(--graphite); vertical-align: top; }
.prose th { background: var(--yellow); font-family: var(--font-display); font-weight: 700; }
@media (max-width: 767px) {
    .prose table { display: block; overflow-x: auto; white-space: nowrap; }
}
.prose hr { border: 0; border-top: 1px solid var(--graphite); margin: 40px 0; }
.prose svg { max-width: 100%; height: auto; }

/* newsletter */
.nl-split { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; border: 1px solid var(--ink); border-radius: var(--r-card); padding: clamp(28px, 5vw, 56px); }
.nl-form { display: flex; gap: 12px; flex-wrap: wrap; }
.nl-form input[type="email"] {
    flex: 1 1 220px;
    border: 1px solid var(--graphite);
    border-radius: var(--r-btn);
    padding: 14px 18px;
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--ink);
    background: var(--paper);
}
.nl-form input[type="email"]:focus { border-color: var(--ink); outline: none; }
.nl-side .micro { margin-top: 12px; display: block; }
.newsletter-ok { font-family: var(--font-display); font-weight: 700; }

/* footer */
.foot { border-top: 1px solid var(--ink); padding: 56px 0 32px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.foot-brand p { font-size: 14px; max-width: 320px; }
.foot-col { display: flex; flex-direction: column; gap: 10px; }
.foot-col h3 { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; margin: 0 0 4px; }
.foot-col a { color: var(--ink); text-decoration: none; font-size: 15px; }
.foot-col a:hover { text-decoration: underline; text-decoration-color: var(--yellow); text-decoration-thickness: 3px; }
.foot-base { border-top: 1px solid var(--graphite); padding-top: 20px; font-size: 13px; color: var(--graphite); }

/* cookie box */
.cookiebox {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 16px;
    z-index: 100;
    display: none;
    background: var(--paper);
    border: 2px solid var(--ink);
    border-radius: var(--r-card);
    max-width: 680px;
    margin: 0 auto;
}
.cookiebox.is-visible { display: block; }
.cookiebox-in { display: flex; gap: 20px; align-items: center; padding: 20px 26px; flex-wrap: wrap; }
.cookiebox-in p { margin: 0; font-size: 14px; line-height: 1.43; flex: 1 1 300px; }
.cookiebox-actions { display: flex; gap: 12px; }
.cookiebox-actions .btn-yell, .cookiebox-actions .btn-ghost { padding: 10px 20px; font-size: 14px; }

/* responsive */
@media (max-width: 1024px) {
    .cards-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
    .split-2 { grid-template-columns: 1fr; }
    .split-rev > .blob-stage { order: 0; }
    .cards-3 { grid-template-columns: 1fr; }
    .nl-split { grid-template-columns: 1fr; }
    .foot-grid { grid-template-columns: 1fr; gap: 28px; }
    .toc-list { columns: 1; }

    .burger {
        display: inline-flex;
        flex-direction: column;
        justify-content: center;
        gap: 6px;
        margin-left: auto;
        width: 46px;
        height: 46px;
        padding: 12px;
        background: var(--yellow);
        border: 0;
        border-radius: var(--r-btn);
        cursor: pointer;
    }
    .burger span { display: block; height: 2.5px; background: var(--ink); border-radius: 2px; transition: transform .15s ease; }
    .burger.is-open span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
    .burger.is-open span:nth-child(2) { transform: translateY(-4.5px) rotate(-45deg); }

    .head { position: relative; }
    .mainnav {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        z-index: 90;
        flex-direction: column;
        align-items: stretch;
        background: var(--paper);
        border-bottom: 2px solid var(--ink);
        padding: 12px 24px 24px;
        gap: 4px;
        margin: 0;
    }
    .mainnav.is-open { display: flex; }
    .mainnav-a { padding: 12px 4px; font-size: 19px; }
    body.nav-locked { overflow: hidden; }
}