@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Poppins:wght@400;500;600;700;800;900&display=swap');

:root {
  color-scheme: dark;
  --color-bg: #0a0a0a;
  --color-surface: #111110;
  --color-surface-raised: #191918;
  --color-text: #f5f5f5;
  --color-muted: #9e9e9e;
  --color-accent: #ffcc00;
  --color-accent-ink: #151307;
  --color-line: rgb(245 243 236 / 16%);
  --font-body: 'DM Sans', Arial, sans-serif;
  --font-primary: 'Poppins', 'Arial Narrow', sans-serif;
  --font-display: var(--font-primary);
  --bg-black: #050505;
  --color-yellow: #ffcc00;
  --text-white: #fff;
  --text-muted: #a3a3a3;
  --space-1: .5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 5rem;
  --space-7: 8rem;
  --content-width: 78rem;
  --shadow-header: 0 1rem 3rem rgb(0 0 0 / 28%);
  --ease-out: cubic-bezier(.2, .7, .2, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body { margin: 0; min-width: 20rem; background: var(--color-bg); color: var(--color-text); font-family: var(--font-body); line-height: 1.5; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 5px; }
::selection { background: var(--color-accent); color: var(--color-accent-ink); }

.skip-link { position: fixed; z-index: 20; top: 1rem; left: 1rem; transform: translateY(-180%); padding: .75rem 1rem; background: var(--color-accent); color: var(--color-accent-ink); font-weight: 700; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; z-index: 10; top: 0; border-bottom: 1px solid var(--color-line); background: rgb(9 9 9 / 92%); box-shadow: var(--shadow-header); backdrop-filter: blur(16px); }
.header-inner { width: min(var(--content-width), calc(100% - 3rem)); min-height: 5.5rem; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }
.brand { display: inline-flex; align-items: center; gap: .75rem; flex: 0 0 auto; }
.brand-mark { position: relative; display: inline-block; color: var(--color-text); font: 800 2.15rem/.9 var(--font-display); letter-spacing: -.14em; padding-right: .14em; }
.brand-mark::after { position: absolute; top: -.08em; right: .08em; width: .42em; height: .16em; background: var(--color-accent); content: ''; }
.brand-image { display: block; width: 2.6rem; height: auto; }
.site-navigation { display: flex; align-items: center; gap: clamp(1rem, 2.3vw, 2rem); }
.site-navigation > a:not(.button), .footer-links a { color: var(--color-muted); font-size: .88rem; transition: color 180ms var(--ease-out); }
.site-navigation > a:not(.button):hover, .footer-links a:hover { color: var(--color-accent); }
.button { display: inline-flex; min-height: 3.5rem; align-items: center; justify-content: center; gap: .75rem; padding: .85rem 1.25rem; background: var(--color-accent); color: var(--color-accent-ink); font-weight: 700; transition: background 180ms var(--ease-out), transform 180ms var(--ease-out); }
.button:hover { transform: translateY(-2px); background: #ffdc47; }
.button-small { min-height: 2.8rem; padding: .65rem 1rem; font-size: .85rem; }
.menu-toggle { display: none; }

/* Hero editorial: identidade isolada do tratamento gráfico para preservar contraste e proporção. */
.hero-editorial { display: flex; min-height: 100vh; align-items: center; padding: 2rem 5%; background: var(--bg-black); }
.hero-container { display: grid; width: min(100%, 1400px); grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 4vw, 4rem); align-items: center; margin: 0 auto; }
.hero-col-text { min-width: 0; }
.hero-eyebrow { margin: 0; color: var(--color-yellow); font-size: .85rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }
.hero-eyebrow span { padding-inline: .4rem; color: var(--text-muted); }
.hero-logo-box { width: min(100%, 540px); margin: 1.5rem 0; }
.hero-logo { display: block; width: 100%; max-width: 520px; height: auto; }
.hero-description { max-width: 440px; margin: 0 0 2rem; color: var(--text-white); font-size: 1.25rem; line-height: 1.5; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; }
.hero-link-cta { display: inline-flex; align-items: center; gap: .5rem; padding-bottom: 4px; border-bottom: 2px solid var(--color-yellow); color: var(--color-yellow); font-size: 1rem; font-weight: 700; transition: transform .2s ease, opacity .2s ease; }
.hero-link-cta:hover { opacity: .85; transform: translateY(2px); }
.hero-link-secondary { display: inline-flex; align-items: center; gap: .5rem; color: var(--text-white); font-size: .95rem; font-weight: 600; transition: color 180ms var(--ease-out); }
.hero-link-secondary:hover { color: var(--color-yellow); }
.poster-card { position: relative; isolation: isolate; display: flex; width: 100%; height: min(580px, calc(100svh - 4rem)); min-height: 420px; flex-direction: column; justify-content: space-between; overflow: hidden; padding: clamp(1.5rem, 3vw, 2.5rem); border: 1px solid rgb(255 204 0 / 25%); border-radius: 8px; background: radial-gradient(circle at 50% 30%, #161616 0%, #080808 100%); box-shadow: 0 0 60px rgb(255 204 0 / 5%); }
.poster-card::before { position: absolute; z-index: -1; inset: 1rem; border: 1px solid rgb(245 245 245 / 7%); content: ''; pointer-events: none; }
.poster-card::after { position: absolute; z-index: -1; top: 10%; right: 14%; width: 1px; height: 80%; transform: rotate(28deg); background: linear-gradient(transparent, rgb(255 204 0 / 18%), transparent); content: ''; pointer-events: none; }
.poster-header, .poster-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.poster-tag { color: var(--text-muted); font-size: .75rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }
.poster-badge { padding: 2px 8px; border-radius: 2px; background: var(--color-yellow); color: #050505; font-size: .7rem; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; }
.poster-center { margin: auto 0; text-align: center; }
.poster-number { transform: scaleX(1.08) scaleY(1.15); color: var(--color-yellow); font: 600 clamp(16rem, 24vw, 22rem)/.85 var(--font-primary); letter-spacing: -8px; text-shadow: 0 0 40px rgb(255 204 0 / 20%); }
.poster-footer { justify-content: flex-end; }
.poster-lines { display: flex; align-items: center; gap: 6px; }
.poster-lines .line-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-yellow); }
.poster-lines .line-bar { width: 32px; height: 2px; background: rgb(255 204 0 / 50%); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); clip-path: inset(50%); white-space: nowrap; border: 0; }
.institution-section { width: min(var(--content-width), calc(100% - 3rem)); margin: 0 auto; padding-block: clamp(5rem, 9vw, 8rem); scroll-margin-top: 6rem; }
.section-heading { max-width: 46rem; margin-bottom: 3rem; }
.section-heading-row { display: flex; max-width: none; align-items: end; justify-content: space-between; gap: 2rem; }
.section-eyebrow { margin: 0 0 .9rem; color: var(--color-accent); font-size: .75rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.section-heading h2, .join-copy h2 { max-width: 50rem; margin: 0; font: 600 clamp(2rem, 4.6vw, 4rem)/1.06 var(--font-display); letter-spacing: -.055em; }
.section-heading > p:not(.section-eyebrow), .section-heading-row > p { max-width: 34rem; margin: 1.25rem 0 0; color: var(--color-muted); font-size: 1.05rem; line-height: 1.75; }
.section-heading-row > p { margin: 0 0 .35rem; }
.about-section { border-top: 1px solid var(--color-line); }
.about-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; border: 1px solid var(--color-line); background: var(--color-line); scroll-margin-top: 6rem; }
.about-card { min-height: 17rem; padding: clamp(1.5rem, 3vw, 2.5rem); background: var(--color-bg); }
.card-index { color: var(--color-accent); font: 700 .8rem var(--font-display); }
.about-card h3 { margin: 3.2rem 0 .75rem; font: 600 1.3rem/1.2 var(--font-display); }
.about-card p { max-width: 22rem; margin: 0; color: var(--color-muted); line-height: 1.7; }
.yellow-book-section { display: flex; align-items: center; justify-content: space-between; gap: 2rem; margin-top: 1.5rem; padding: 1.5rem; border: 1px solid rgb(255 204 0 / 24%); background: radial-gradient(ellipse at 100% 0%, rgb(255 204 0 / 7%), transparent 45%), #10100f; }
.yellow-book-section .section-eyebrow { margin-bottom: .5rem; }
.yellow-book-section h2 { max-width: 48rem; margin: 0; font: 600 clamp(1.15rem, 2.2vw, 1.6rem)/1.3 var(--font-display); }
.library-section { width: 100%; max-width: none; padding-inline: max(1.5rem, calc((100vw - var(--content-width)) / 2)); background: #0e0e0d; }
.library-support { width: min(100%, var(--content-width)); margin-inline: auto; }
.library-support .section-eyebrow { margin-bottom: 1rem; }
.library-support h2 { max-width: 56rem; margin: 0; font: 600 clamp(2.25rem, 5.5vw, 5rem)/1.05 var(--font-display); letter-spacing: -.055em; }
.library-support-links { display: grid; max-width: 56rem; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 2.5rem; }
.library-support-button { min-height: 4.5rem; justify-content: space-between; padding: 1.2rem 1.5rem; font-size: 1.05rem; }
.join-section { display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 3rem; padding: clamp(2.5rem, 7vw, 6rem) max(1.5rem, calc((100vw - var(--content-width)) / 2)); border-block: 1px solid var(--color-line); background: radial-gradient(ellipse at 90% 50%, rgb(255 204 0 / 8%), transparent 38%), #090909; scroll-margin-top: 6rem; }
.join-copy { max-width: 52rem; }
.join-copy > p:not(.section-eyebrow) { max-width: 46rem; margin: 1.25rem 0 0; color: #c4c4c1; font-size: 1rem; line-height: 1.75; }
.join-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 1.25rem; }
.join-secondary { color: var(--color-muted); font-size: .85rem; font-weight: 600; }
.join-secondary:hover { color: var(--color-accent); }
.join-membership { grid-column: 1 / -1; flex-direction: row; align-items: center; justify-content: space-between; gap: 1rem 2rem; margin-top: .5rem; padding-top: 1.5rem; border-top: 1px solid var(--color-line); }
.social-section { border-bottom: 1px solid var(--color-line); }
.social-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8rem; }
.social-card { width: 100%; min-width: 0; min-height: 4rem; justify-content: space-between; padding: .7rem .9rem; text-align: left; transition: background 180ms var(--ease-out), transform 180ms var(--ease-out); }
.social-card[href]:hover { transform: translateY(-2px); background: #ffdc47; }
.social-card-copy { display: grid; min-width: 0; gap: .15rem; }
.social-platform { color: var(--color-accent-ink); font-size: .62rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.social-handle { overflow-wrap: anywhere; color: var(--color-accent-ink); font: 700 .78rem/1.25 var(--font-body); }
.social-arrow { flex: 0 0 auto; color: var(--color-accent-ink); }
.social-page-section { padding: clamp(5rem, 9vw, 8rem) max(1.5rem, calc((100vw - var(--content-width)) / 2)); border-top: 1px solid var(--color-line); background: #0a0a0a; scroll-margin-top: 6rem; }
.social-page-section > .section-heading, .social-showcase { width: min(100%, var(--content-width)); margin-inline: auto; }
.social-showcase { padding: clamp(1.5rem, 4vw, 3rem); border: 1px solid var(--color-line); background: radial-gradient(ellipse at 85% 15%, rgb(255 204 0 / 8%), transparent 40%), #111110; }
.social-showcase > .section-eyebrow { margin-bottom: 1.25rem; }
.volunteer-areas, .volunteer-nextsteps, .volunteer-form-wrap { min-width: 0; }
.volunteer-areas { grid-column: 1 / -1; margin-top: 1.5rem; }
.volunteer-heading { margin-bottom: 1.25rem; }
.volunteer-heading .section-eyebrow, .volunteer-nextsteps .section-eyebrow, .volunteer-form-wrap .section-eyebrow { margin-bottom: .5rem; }
.volunteer-heading h3, .volunteer-nextsteps h3, .volunteer-form-wrap h3 { margin: 0; font: 600 clamp(1.4rem, 2.5vw, 2rem)/1.2 var(--font-display); }
.volunteer-area-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .75rem; }
.volunteer-area { min-height: 10rem; padding: 1.25rem; border: 1px solid var(--color-line); background: #10100f; }
.volunteer-area > span { color: var(--color-accent); font: 700 .72rem var(--font-display); }
.volunteer-area h4 { margin: 1.3rem 0 .4rem; font: 600 1rem/1.2 var(--font-display); }
.volunteer-area p { margin: 0; color: var(--color-muted); font-size: .82rem; line-height: 1.55; }
.volunteer-nextsteps { grid-column: 1; padding: 1.5rem; border: 1px solid var(--color-line); background: #10100f; }
.volunteer-nextsteps ol { display: grid; gap: .75rem; margin: 1.25rem 0; padding-left: 1.2rem; color: #d0d0cc; font-size: .9rem; line-height: 1.55; }
.volunteer-nextsteps li::marker { color: var(--color-accent); font-weight: 700; }
.volunteer-contact-note, .volunteer-form-intro, .volunteer-form-note { color: var(--color-muted); font-size: .85rem; line-height: 1.6; }
.volunteer-contact-note { margin: 1rem 0 0; }
.volunteer-form-wrap { grid-column: 2; padding: 1.5rem; border: 1px solid rgb(255 204 0 / 24%); border-top: 2px solid var(--color-accent); background: radial-gradient(ellipse at 100% 0%, rgb(255 204 0 / 7%), transparent 42%), #10100f; }
.volunteer-form-intro { margin: 1rem 0; }
.volunteer-form-button { width: 100%; min-height: 4rem; margin-top: .5rem; text-align: center; }
.volunteer-form-note { margin: .85rem 0 0; }
.anchor-target { display: block; scroll-margin-top: 6rem; }

.site-footer { margin-top: 0; border-top: 1px solid var(--color-line); background: var(--color-surface); }
.footer-main, .footer-bottom { width: min(var(--content-width), calc(100% - 3rem)); margin-inline: auto; }
.footer-main { display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; gap: var(--space-4); padding-block: var(--space-5); }
.footer-note { color: var(--color-muted); font-size: .9rem; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .75rem 1.25rem; }
.footer-links a { font-size: .8rem; }
.footer-bottom { display: flex; justify-content: space-between; gap: var(--space-3); padding-block: 1.25rem; border-top: 1px solid var(--color-line); color: var(--color-muted); }
.footer-bottom small { font-size: .72rem; }
.privacy-link { color: var(--color-muted); font-size: .72rem; transition: color 180ms var(--ease-out); }
.privacy-link:hover { color: var(--color-accent); }

.privacy-document { min-height: 100vh; background: var(--bg-black); }
.privacy-header { border-bottom: 1px solid var(--color-line); background: rgb(9 9 9 / 92%); }
.privacy-header-inner { display: flex; width: min(var(--content-width), calc(100% - 3rem)); min-height: 5.5rem; align-items: center; justify-content: space-between; gap: 1rem; margin-inline: auto; }
.privacy-back { color: var(--color-muted); font-size: .9rem; transition: color 180ms var(--ease-out); }
.privacy-back:hover, .privacy-topic a { color: var(--color-accent); }
.privacy-main { width: min(100% - 3rem, 47.5rem); margin: 0 auto; padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.privacy-main h1 { max-width: 45rem; margin: 0; color: var(--color-text); font: 600 clamp(2.2rem, 6vw, 4rem)/1.08 var(--font-display); letter-spacing: -.055em; }
.privacy-updated { margin: .9rem 0 2rem; color: var(--color-muted); font-size: .85rem; }
.privacy-intro { margin-bottom: 2.5rem; padding: 1.25rem 1.5rem; border-left: 2px solid var(--color-accent); background: #10100f; }
.privacy-intro p, .privacy-topic p, .privacy-disclaimer { color: #c4c4c1; font-size: 1rem; line-height: 1.75; }
.privacy-intro p { margin: 0; }
.privacy-topic { margin-top: 2.25rem; }
.privacy-topic h2 { margin: 0 0 .75rem; color: var(--color-text); font: 600 clamp(1.25rem, 3vw, 1.55rem)/1.25 var(--font-display); letter-spacing: -.025em; }
.privacy-topic p { margin: .75rem 0 0; }
.privacy-topic a { text-decoration: underline; text-underline-offset: .2em; }
.privacy-topic a:hover { color: #ffe066; }
.privacy-disclaimer { margin: 2.5rem 0 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--color-line); color: var(--color-muted); font-size: .85rem; }
.privacy-return-button { min-height: 3rem; }

@media (max-width: 62rem) {
  .hero-editorial { min-height: auto; padding: 4rem clamp(20px, 5%, 48px); }
  .hero-container { grid-template-columns: 1fr; gap: 3rem; }
  .hero-logo-box { max-width: 360px; }
  .poster-card { height: 380px; min-height: 0; }
  .poster-number { font-size: clamp(8rem, 24vw, 13rem); }
  .book-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .book-card { grid-template-columns: minmax(7rem, .6fr) 1.4fr; }
  .join-section { grid-template-columns: 1fr; gap: 2rem; }
  .join-actions { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .social-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .volunteer-area-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .volunteer-nextsteps, .volunteer-form-wrap { grid-column: 1 / -1; }
}

@media (max-width: 48rem) {
  .header-inner { width: calc(100% - 2rem); min-height: 4.75rem; }
  .menu-toggle { display: inline-flex; min-height: 2.75rem; align-items: center; gap: .65rem; padding: .5rem; border: 0; background: transparent; cursor: pointer; }
  .menu-toggle-label { color: var(--color-muted); font-size: .8rem; font-weight: 600; }
  .menu-icon { display: grid; width: 1.35rem; gap: 5px; }
  .menu-icon span { display: block; height: 2px; background: var(--color-accent); transition: transform 180ms var(--ease-out); }
  .menu-toggle[aria-expanded="true"] .menu-icon span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-icon span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .site-navigation { position: absolute; top: 100%; right: 0; left: 0; display: flex; max-height: 0; flex-direction: column; align-items: stretch; gap: 0; overflow: hidden; padding-inline: 1rem; border-bottom: 0 solid var(--color-line); background: var(--color-bg); opacity: 0; transition: max-height 260ms var(--ease-out), opacity 180ms var(--ease-out), padding 260ms var(--ease-out); }
  .site-navigation.is-open { max-height: calc(100vh - 4.75rem); overflow-y: auto; padding-block: .5rem 1.25rem; border-bottom-width: 1px; opacity: 1; }
  .site-navigation > a:not(.button) { padding: 1rem .25rem; border-bottom: 1px solid var(--color-line); }
  .site-navigation .button { margin-top: 1rem; }
  .institution-section { width: calc(100% - 2rem); padding-block: 4.5rem; }
  .section-heading-row { align-items: flex-start; flex-direction: column; gap: .75rem; }
  .section-heading { margin-bottom: 2rem; }
  .about-grid { grid-template-columns: 1fr; }
  .about-card { min-height: auto; }
  .about-card h3 { margin-top: 1.5rem; }
  .yellow-book-section { align-items: stretch; flex-direction: column; gap: 1.25rem; padding: 1.25rem; }
  .yellow-book-section .button { width: 100%; }
  .library-section { width: 100%; padding-inline: 1rem; }
  .library-support-links { grid-template-columns: 1fr; gap: .75rem; margin-top: 1.75rem; }
  .library-support-button { min-height: 4rem; padding: 1rem 1.1rem; font-size: 1rem; }
  .book-grid { width: 100%; grid-template-columns: 1fr; }
  .book-card { grid-template-columns: minmax(7rem, .65fr) 1.35fr; gap: 1rem; }
  .book-cover { min-height: 16rem; }
  .book-copy > p:not(.book-label):not(.book-author) { min-height: 0; }
  .join-section { padding-inline: 1rem; }
  .join-actions { align-items: flex-start; flex-direction: column; }
  .social-grid { grid-template-columns: 1fr; }
  .social-page-section { padding-inline: 1rem; }
  .social-page-section > .section-heading, .social-showcase { width: 100%; }
  .social-showcase { padding: 1.25rem; }
  .volunteer-area-grid { grid-template-columns: 1fr; }
  .footer-main { width: calc(100% - 2rem); grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .footer-note { grid-column: 1 / -1; grid-row: 2; margin: 0; }
  .footer-links { grid-column: 1 / -1; justify-content: flex-start; }
  .footer-bottom { width: calc(100% - 2rem); flex-direction: column; gap: .45rem; }
  .privacy-header-inner { width: calc(100% - 2rem); min-height: 4.75rem; }
  .privacy-main { width: calc(100% - 2rem); padding-block: 3rem; }
  .privacy-intro { padding: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}