*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --green: #00ff9a;
    --orange: #E84B2A;
    --black: #000;
    --dark: #0a0a0a;
    --dark2: #111;
    --white: #fff;
    --gray: #888;
    --border: #1a1a1a;
    --font-head: 'Oswald', sans-serif;
    --font-body: 'Nunito Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    background: #f3f3f3;
    color: #111;
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ─── HEADER ──────────────────────────────────────── */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 20px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    transition: border-color 0.3s;
}

.header__logo img {
    height: 26px;
    filter: brightness(0) invert(1);
}

.header__badge {
    font-family: var(--font-head);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--green);
    border: 1px solid rgba(0, 255, 154, 0.4);
    padding: 7px 16px;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}
.header__badge:hover {
    background: rgba(0, 255, 154, 0.08);
    border-color: rgba(0, 255, 154, 0.75);
}

/* ─── HERO ────────────────────────────────────────── */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
    background-image: url('../iaskipsia_billboardbrasil.jpg');
    background-size: cover;
    background-position: center;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.22);
    z-index: 0;
}

/* Card central */
/* Hero card — imagem clicável */
.hero-card-link {
    position: relative;
    z-index: 2;
    display: block;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.55);
    border-radius: 22px;
    overflow: hidden;
}

.hero-card-link:hover {
    transform: translateY(-4px);
    box-shadow: 0 44px 100px rgba(0, 0, 0, 0.65);
}

.hero-card-img {
    display: block;
    width: 440px;
    max-width: calc(100vw - 48px);
    height: auto;
}

/* ─── VÍDEO ───────────────────────────────────────── */
.video-section {
    background: #111;
    padding: 48px 24px;
    line-height: 0;
}

.video-wrap {
    max-width: 60%;
    margin: 0 auto;
    position: relative;
    aspect-ratio: 16 / 9;
    border-radius: 0;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

.video-play {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: opacity 0.3s;
}
.video-play__btn {
    width: 72px;
    height: 72px;
    background: rgba(0,0,0,0.75);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
}
.video-play:hover .video-play__btn {
    background: rgba(0,0,0,0.95);
    transform: scale(1.08);
}
.video-play.hidden {
    opacity: 0;
    pointer-events: none;
}

.video-wrap video,
.video-wrap iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    border: none;
    background: #000;
}

/* ─── STATS ───────────────────────────────────────── */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background-color: rgba(0, 255, 154, 0.15);
}

.stat {
    background: var(--green);
    padding: 52px 40px;
    text-align: center;
}

.stat__number {
    font-family: var(--font-head);
    font-size: clamp(3rem, 5vw, 5.5rem);
    font-weight: 700;
    color: var(--black);
    line-height: 1;
    margin-bottom: 10px;
}

.stat__label {
    font-size: 13px;
    font-weight: 600;
    color: rgba(0, 0, 0, 0.6);
    text-transform: uppercase;
    letter-spacing: 1px;
    line-height: 1.4;
}

/* ─── SECTION BASE ────────────────────────────────── */
.section {
    padding: 100px 48px;
    max-width: 1200px;
    margin: 0 auto;
}

.section--border { border-top: 1px solid #d5d5d5; }

.section__tag {
    font-family: var(--font-head);
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: #ff4d07;
    margin-bottom: 20px;
}

.section__title {
    font-family: var(--font-head);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 700;
    text-transform: uppercase;
    line-height: 1.1;
    margin-bottom: 32px;
    color: #000;
}

.section__body {
    color: #444;
    line-height: 1.85;
    font-size: 1rem;
}

.section__body p + p { margin-top: 20px; }

/* ─── CONTEXTO ────────────────────────────────────── */
.contexto__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contexto__quote {
    font-family: var(--font-head);
    font-size: clamp(1.4rem, 2.5vw, 2.1rem);
    font-weight: 600;
    text-transform: uppercase;
    line-height: 1.25;
    color: #111;
    padding: 44px;
    border: 1px solid #d5d5d5;
    background: #fff;
    position: sticky;
    top: 100px;
}

.contexto__quote span { color: #ff4d07; }

.contexto__quote cite {
    display: block;
    margin-top: 28px;
    font-family: var(--font-body);
    font-size: 12px;
    font-style: normal;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #aaa;
}

/* ─── IDEIA ───────────────────────────────────────── */
.ideia__grid {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    align-items: start;
}

.ideia__aside {
    position: sticky;
    top: 100px;
}

.ideia__number {
    font-family: var(--font-head);
    font-size: 100px;
    font-weight: 700;
    line-height: 1;
    color: #ddd;
    margin-bottom: -12px;
}

.ideia__callout {
    margin-top: 32px;
    padding: 28px 32px;
    border-left: 3px solid #ff4d07;
    font-size: 1.05rem;
    color: #ff4d07;
    font-weight: 600;
    line-height: 1.6;
    font-style: italic;
}

/* ─── COMO FUNCIONA ───────────────────────────────── */
.como-funciona {
    background: #e8e8e8;
    border-top: 1px solid #d0d0d0;
    border-bottom: 1px solid #d0d0d0;
    padding: 100px 48px;
}

.como-funciona__inner {
    max-width: 1200px;
    margin: 0 auto;
}

.como-funciona__header { margin-bottom: 60px; }

/* Cards */
.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3px;
}

.card {
    overflow: hidden;
    background: transparent;
}

/* PNG já tem todo o tratamento visual — só deixar fluir */
.card img {
    display: block;
    width: 100%;
    height: auto;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3px;
    margin-top: 32px;
}

.step {
    padding: 28px 24px 36px;
}

.step__title {
    font-family: var(--font-body);
    font-size: 1.15rem;
    font-weight: 700;
    text-transform: none;
    margin-bottom: 12px;
    display: flex;
    align-items: baseline;
    gap: 8px;
    color: #000;
}

.step__arrow {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 400;
    color: #555;
    letter-spacing: 1px;
}

.step__body {
    color: #555;
    font-size: 0.9rem;
    line-height: 1.75;
}

/* ─── CTA SECTION ─────────────────────────────────── */
.cta-section {
    background: var(--green);
    padding: 110px 48px;
    text-align: center;
}

.cta-section__label {
    font-family: var(--font-head);
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: rgba(0, 0, 0, 0.5);
    margin-bottom: 24px;
}

.cta-section__title {
    font-family: var(--font-head);
    font-size: clamp(2.2rem, 5vw, 4.5rem);
    font-weight: 700;
    text-transform: uppercase;
    color: var(--black);
    line-height: 1.1;
    margin-bottom: 44px;
}

.cta-section__btn {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    background: var(--black);
    color: var(--green);
    font-family: var(--font-head);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    padding: 20px 52px;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-section__btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.cta-section__note {
    margin-top: 20px;
    font-size: 12px;
    color: rgba(0, 0, 0, 0.45);
    letter-spacing: 1px;
}

/* ─── FOOTER ──────────────────────────────────────── */
.footer {
    background: #ebebeb;
    padding: 56px 48px;
    border-top: 1px solid #d0d0d0;
}

.footer__inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.footer__logo img {
    height: 22px;
    filter: brightness(0) invert(1);
    opacity: 0.5;
}

.footer__copy {
    font-size: 12px;
    color: #999;
    letter-spacing: 0.5px;
}

.footer__link {
    color: #ff4d07;
    text-decoration: none;
    font-size: 12px;
    letter-spacing: 1px;
    font-family: var(--font-head);
    text-transform: uppercase;
}

.footer__link:hover { text-decoration: underline; }

/* ─── FADE-IN ANIMATION ───────────────────────────── */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.65s ease, transform 0.65s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stats bar on light page — keep black text readable */
.stat__number { color: var(--black); }
.stat__label  { color: rgba(0,0,0,0.65); }

/* ─── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 960px) {
    .header { padding: 16px 24px; }

    .hero-card-img { width: calc(100vw - 48px); max-width: 420px; }

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

    .section { padding: 70px 28px; }

    .contexto__grid { grid-template-columns: 1fr; gap: 48px; }
    .contexto__quote { position: static; }

    .ideia__grid { grid-template-columns: 1fr; gap: 48px; }
    .ideia__aside { position: static; }

    .como-funciona { padding: 70px 28px; }
    .cards { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: 1fr; }

    .cta-section { padding: 70px 28px; }

    .footer { padding: 40px 28px; }
    .footer__inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .hero__title { font-size: 2.4rem; }
    .cards { grid-template-columns: repeat(2, 1fr); }
}