@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ═══════════════════════════════════════════════════
   NU CASHBACK — design system
   Identidade oficial Nubank: roxo + branco, sóbrio.
   ═══════════════════════════════════════════════════ */
:root {
    --nu-purple: #820AD1;
    --nu-purple-dark: #6A0DAD;
    --nu-purple-deeper: #530A8A;
    --nu-purple-light: #9B4DCA;
    --nu-purple-soft: #F5ECFB;
    --nu-purple-tint: #FAF6FD;
    --nu-lavender: #EFE3FA;

    --nu-white: #FFFFFF;
    --nu-gray-50: #FAFAFA;
    --nu-gray-100: #F5F5F5;
    --nu-gray-200: #EDEDED;
    --nu-gray-300: #D1D1D1;
    --nu-gray-500: #767676;
    --nu-gray-700: #3A3A3A;
    --nu-gray-900: #111111;
    --nu-ink: #1A1A1A;
    --ease: cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    max-width: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--nu-white);
    color: var(--nu-gray-900);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    max-width: 100%;
    line-height: 1.5;
    letter-spacing: -.005em;
}

.container { max-width: 1120px; }

.section-eyebrow {
    display: inline-block;
    font-size: .72rem; font-weight: 700;
    color: var(--nu-purple);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 18px;
}

/* ═══════════════════════════════════════════════════
   SPLASH
   ═══════════════════════════════════════════════════ */
#splash-screen {
    position: fixed; inset: 0;
    background: var(--nu-purple);
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    gap: 18px;
    z-index: 10000;
    transition: opacity .6s ease;
}
#splash-screen.fade-out { opacity: 0; pointer-events: none; }
#splash-logo {
    width: 120px; height: auto;
    filter: brightness(0) invert(1);
    animation: nuPulse 2.2s ease-in-out infinite;
}
#splash-screen .splash-tag {
    color: rgba(255,255,255,.72);
    font-size: .78rem; font-weight: 600;
    letter-spacing: .16em; text-transform: uppercase;
}
@keyframes nuPulse {
    0%,100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.03); opacity: .86; }
}

/* ═══════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════ */
.header {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 500;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,.05);
    transition: box-shadow .3s ease;
}
.header.scrolled { box-shadow: 0 1px 12px rgba(0,0,0,.06); }
.header-inner {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 32px;
    max-width: 1120px; margin: 0 auto;
}
.logo-lockup { display: flex; align-items: center; gap: 10px; }
.logo-nu { height: 28px; width: auto; }
.logo-pill {
    font-size: .68rem; font-weight: 700;
    color: var(--nu-purple);
    border-left: 1px solid var(--nu-gray-200);
    padding-left: 10px;
    letter-spacing: .04em;
}
.header-cta {
    display: inline-flex; align-items: center;
    background: var(--nu-purple);
    color: var(--nu-white);
    font-family: inherit;
    font-size: .88rem; font-weight: 700;
    padding: 11px 24px;
    border-radius: 100px;
    border: none; cursor: pointer;
    letter-spacing: -.005em;
    transition: background .2s var(--ease), transform .2s var(--ease);
}
.header-cta:hover { background: var(--nu-purple-dark); transform: translateY(-1px); }

/* ═══════════════════════════════════════════════════
   TRUST RIBBON — aviso de autenticidade, sóbrio
   ═══════════════════════════════════════════════════ */
.trust-ribbon {
    background: var(--nu-purple-tint);
    border-bottom: 1px solid var(--nu-purple-soft);
    margin-top: 59px;
}
.trust-ribbon-inner {
    max-width: 1120px; margin: 0 auto;
    display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 9px 24px;
    font-size: .76rem; font-weight: 500;
    color: var(--nu-gray-500);
    letter-spacing: .01em;
    text-align: center;
}
.trust-ribbon strong { font-weight: 600; color: var(--nu-purple-deeper); }
.trust-ribbon .sep { color: var(--nu-gray-300); margin: 0 2px; }
.trust-ribbon svg { flex-shrink: 0; color: var(--nu-purple); }

/* ═══════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════ */
.hero {
    position: relative;
    padding: 80px 0 72px;
    background: var(--nu-white);
    overflow: hidden;
}
.hero-eyebrow {
    display: inline-block;
    font-size: .76rem; font-weight: 700;
    color: var(--nu-purple);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 22px;
}
.hero-title {
    font-size: clamp(2.4rem, 5.6vw, 4.05rem);
    font-weight: 800;
    color: var(--nu-gray-900);
    line-height: 1.04;
    letter-spacing: -.035em;
    margin-bottom: 24px;
}
.hero-title-soft { color: var(--nu-purple); }
.hero-sub {
    font-size: clamp(1.04rem, 1.5vw, 1.22rem);
    color: var(--nu-gray-700);
    line-height: 1.55;
    margin-bottom: 36px;
    max-width: 520px;
    font-weight: 400;
}
.hero-sub b { color: var(--nu-gray-900); font-weight: 700; }

/* CPF entry card */
.cpf-card {
    background: var(--nu-white);
    border: 1px solid var(--nu-gray-200);
    border-radius: 20px;
    padding: 30px 28px;
    max-width: 460px;
    box-shadow: 0 14px 44px rgba(17,17,17,.06);
}
.cpf-card-label {
    font-size: .92rem; font-weight: 700;
    color: var(--nu-gray-900);
    margin-bottom: 16px;
}
.cpf-field { position: relative; margin-bottom: 14px; }
.cpf-input {
    width: 100%;
    padding: 17px 18px;
    background: var(--nu-gray-100);
    border: 1.5px solid transparent;
    border-radius: 14px;
    font-family: inherit;
    font-size: 1.2rem; font-weight: 700;
    color: var(--nu-gray-900);
    letter-spacing: .02em;
    outline: none;
    transition: border-color .15s, background .15s;
}
.cpf-input::placeholder { color: var(--nu-gray-300); font-weight: 600; }
.cpf-input:focus { border-color: var(--nu-purple); background: var(--nu-white); }
.cpf-input.invalid { border-color: #D92D20; background: #FFF6F5; }
.cpf-error {
    font-size: .82rem; font-weight: 500; color: #D92D20;
    margin: -4px 0 12px; display: none;
}
.cpf-error.show { display: block; }
.cpf-btn {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    width: 100%;
    background: var(--nu-purple);
    color: var(--nu-white);
    padding: 17px 28px;
    border-radius: 100px;
    font-family: inherit;
    font-size: 1.02rem; font-weight: 700;
    border: none; cursor: pointer;
    transition: all .25s var(--ease);
    letter-spacing: -.005em;
}
.cpf-btn:hover { background: var(--nu-purple-dark); transform: translateY(-1px); }
.cpf-btn:active { transform: translateY(0); }
.cpf-btn svg { transition: transform .25s ease; }
.cpf-btn:hover svg { transform: translateX(4px); }
.cpf-micro {
    font-size: .82rem; color: var(--nu-gray-500);
    margin-top: 16px; line-height: 1.55;
    display: flex; align-items: flex-start; gap: 8px;
    font-weight: 400;
}
.cpf-micro svg { flex-shrink: 0; margin-top: 1px; color: var(--nu-purple); }

/* Hero visual — cartão estático, sóbrio */
.hero-visual {
    position: relative;
    display: flex; align-items: center; justify-content: center;
    min-height: 360px;
}
.cash-card {
    position: relative;
    width: 330px;
    background: linear-gradient(150deg, #820AD1 0%, #5B0E96 100%);
    border-radius: 24px;
    padding: 30px 28px 26px;
    color: #fff;
    box-shadow: 0 26px 60px rgba(83,10,138,.32);
}
.cash-card-top {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 36px;
}
.cash-card-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: .92rem; letter-spacing: .01em; }
.cash-card-brand img { height: 17px; filter: brightness(0) invert(1); }
.cash-card-chip {
    width: 36px; height: 27px;
    background: linear-gradient(135deg, rgba(255,255,255,.55), rgba(255,255,255,.25));
    border-radius: 6px;
}
.cash-card-label { font-size: .72rem; opacity: .78; text-transform: uppercase; letter-spacing: .1em; font-weight: 600; margin-bottom: 8px; }
.cash-card-value { font-size: 2.7rem; font-weight: 800; letter-spacing: -.03em; line-height: 1; margin-bottom: 20px; }
.cash-card-foot { display: flex; align-items: center; justify-content: space-between; font-size: .78rem; opacity: .82; font-weight: 500; }
.cash-card-pct {
    background: rgba(255,255,255,.16);
    color: #fff;
    padding: 5px 13px; border-radius: 100px;
    font-weight: 700; font-size: .8rem;
}

/* ═══════════════════════════════════════════════════
   HOW IT WORKS (3 passos)
   ═══════════════════════════════════════════════════ */
.how-section { background: var(--nu-purple-tint); padding: 96px 0; }
.how-head { text-align: center; margin-bottom: 54px; }
.how-title {
    font-size: clamp(1.85rem, 3.6vw, 2.55rem);
    font-weight: 800; color: var(--nu-gray-900);
    letter-spacing: -.03em; line-height: 1.1;
}
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.how-step {
    background: var(--nu-white);
    border-radius: 20px;
    padding: 34px 30px;
    border: 1px solid var(--nu-purple-soft);
    transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.how-step:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(83,10,138,.07); }
.how-step-num {
    width: 44px; height: 44px;
    background: var(--nu-purple); color: #fff;
    font-size: 1.05rem; font-weight: 800;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 22px;
}
.how-step h3 {
    font-size: 1.16rem; font-weight: 700;
    color: var(--nu-gray-900);
    margin-bottom: 9px; letter-spacing: -.015em;
}
.how-step p { font-size: .96rem; color: var(--nu-gray-700); line-height: 1.6; font-weight: 400; }

/* ═══════════════════════════════════════════════════
   ABOUT (de onde vem) + exemplos
   ═══════════════════════════════════════════════════ */
.about-section { background: var(--nu-white); padding: 100px 0; }
.about-title {
    font-size: clamp(1.85rem, 3.6vw, 2.6rem);
    font-weight: 800; color: var(--nu-gray-900);
    letter-spacing: -.03em; line-height: 1.1; margin-bottom: 20px;
}
.about-text {
    font-size: 1.08rem; color: var(--nu-gray-700);
    line-height: 1.7; font-weight: 400; max-width: 460px;
}
.about-text strong { color: var(--nu-gray-900); font-weight: 700; }
.example-card {
    background: var(--nu-purple);
    border-radius: 24px;
    padding: 38px 34px;
    color: #fff;
}
.example-card-eyebrow {
    font-size: .72rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 1.6px; margin-bottom: 24px;
    color: rgba(255,255,255,.7);
}
.example-row {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,.16);
}
.example-row:last-child { border-bottom: none; padding-bottom: 0; }
.example-row:first-of-type { padding-top: 0; }
.example-spent { font-size: 1rem; font-weight: 500; color: rgba(255,255,255,.92); }
.example-spent small { display: block; font-size: .74rem; opacity: .6; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 3px; }
.example-arrow { color: rgba(255,255,255,.55); flex-shrink: 0; }
.example-cash { font-size: 1.55rem; font-weight: 800; letter-spacing: -.02em; text-align: right; }
.example-cash small { display: block; font-size: .72rem; opacity: .65; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
/* About trust checklist */
.about-trust { display: flex; flex-direction: column; gap: 20px; }
.about-trust-item { display: flex; align-items: flex-start; gap: 14px; }
.about-trust-icon { width: 32px; height: 32px; border-radius: 50%; background: var(--nu-purple-soft); display: flex; align-items: center; justify-content: center; color: var(--nu-purple); flex-shrink: 0; margin-top: 2px; }
.about-trust-item strong { display: block; font-size: .95rem; color: var(--nu-dark); font-weight: 700; margin-bottom: 3px; }
.about-trust-item span { font-size: .85rem; color: #6B6B6B; line-height: 1.5; }

/* ═══════════════════════════════════════════════════
   URGENCY
   ═══════════════════════════════════════════════════ */
.urgency-section { background: var(--nu-purple-tint); padding: 84px 0; }
.urgency-card {
    max-width: 820px; margin: 0 auto;
    background: var(--nu-white);
    border-radius: 24px;
    padding: 48px 44px;
    text-align: center;
    border: 1px solid var(--nu-purple-soft);
}
.urgency-pill {
    display: inline-flex; align-items: center; gap: 7px;
    font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1.4px;
    color: var(--nu-purple); background: var(--nu-purple-soft);
    padding: 6px 14px; border-radius: 100px; margin-bottom: 20px;
}
.urgency-title {
    font-size: clamp(1.55rem, 3vw, 2.15rem);
    font-weight: 800; color: var(--nu-gray-900);
    letter-spacing: -.025em; line-height: 1.12; margin-bottom: 16px;
}
.urgency-text { font-size: 1.04rem; color: var(--nu-gray-700); line-height: 1.65; font-weight: 400; max-width: 560px; margin: 0 auto 30px; }
.urgency-text strong { color: var(--nu-gray-900); font-weight: 700; }
.urgency-stats { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.urgency-stat-num { font-size: 1.7rem; font-weight: 800; color: var(--nu-purple); letter-spacing: -.02em; line-height: 1; margin-bottom: 6px; }
.urgency-stat-cap { font-size: .82rem; color: var(--nu-gray-500); font-weight: 500; }

/* ═══════════════════════════════════════════════════
   FINAL CTA (purple banner)
   ═══════════════════════════════════════════════════ */
.cta-banner {
    background: linear-gradient(155deg, #820AD1 0%, #530A8A 100%);
    padding: 92px 0; text-align: center; color: var(--nu-white);
    scroll-margin-top: 80px;
}
.cta-banner-inner { max-width: 620px; margin: 0 auto; padding: 0 20px; }
.cta-eyebrow {
    display: inline-block;
    font-size: .74rem; font-weight: 700;
    color: rgba(255,255,255,.82);
    text-transform: uppercase; letter-spacing: 2.4px;
    margin-bottom: 16px;
}
.cta-banner-title {
    font-size: clamp(1.85rem, 3.8vw, 2.85rem); font-weight: 800;
    color: var(--nu-white); margin-bottom: 16px;
    letter-spacing: -.03em; line-height: 1.06;
}
.cta-banner-sub { font-size: 1.06rem; color: rgba(255,255,255,.8); margin-bottom: 34px; line-height: 1.6; font-weight: 400; }
.cta-banner-btn {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--nu-white); color: var(--nu-purple);
    padding: 18px 38px; border-radius: 100px;
    font-family: inherit; font-size: 1.02rem; font-weight: 700;
    border: none; cursor: pointer;
    transition: all .25s var(--ease);
    box-shadow: 0 10px 30px rgba(0,0,0,.18); letter-spacing: -.01em;
}
.cta-banner-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 38px rgba(0,0,0,.26); }
.cta-banner-btn svg { transition: transform .25s ease; }
.cta-banner-btn:hover svg { transform: translateX(4px); }
.cta-trust { display: flex; flex-wrap: wrap; justify-content: center; gap: 24px; margin-top: 28px; }
.cta-trust span { display: inline-flex; align-items: center; gap: 8px; font-size: .88rem; font-weight: 500; color: rgba(255,255,255,.88); }
.cta-trust svg { color: rgba(255,255,255,.7); }

/* ═══════════════════════════════════════════════════
   FOOTER + segurança
   ═══════════════════════════════════════════════════ */
.footer-nu { background: var(--nu-ink); padding: 52px 32px 34px; color: rgba(255,255,255,.55); font-size: .85rem; }
.footer-nu-inner { max-width: 1040px; margin: 0 auto; }
.footer-security {
    display: flex; align-items: flex-start; gap: 14px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 16px; padding: 22px 24px; margin-bottom: 30px;
}
.footer-security svg { flex-shrink: 0; color: rgba(255,255,255,.85); margin-top: 2px; }
.footer-security p { color: rgba(255,255,255,.74); font-size: .9rem; line-height: 1.6; font-weight: 400; }
.footer-security strong { color: #fff; font-weight: 600; }
.footer-nu-logo { height: 26px; width: auto; filter: brightness(0) invert(1); opacity: .9; margin-bottom: 16px; display: block; }
.footer-nu-legal { font-size: .78rem; color: rgba(255,255,255,.42); line-height: 1.65; max-width: 720px; margin-bottom: 18px; }
.footer-nu-divider { border: none; border-top: 1px solid rgba(255,255,255,.1); margin: 26px 0; }
.footer-nu-copyright { font-size: .74rem; color: rgba(255,255,255,.32); line-height: 1.5; }

/* ═══════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════ */

/* Tablet — Bootstrap lg breakpoint */
@media(max-width: 991px){
    /* Zera o gutter horizontal do Bootstrap 5 para evitar sangria lateral */
    .row { --bs-gutter-x: 0; }
    .hero { padding: 52px 0 60px; text-align: center; }
    .hero-sub { margin-left: auto; margin-right: auto; }
    .cpf-card { margin: 0 auto; text-align: left; }
    .how-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
    .about-trust { max-width: 500px; margin: 0 auto; }
    .about-section .row > div:last-child { margin-top: 36px; }
}

/* Phablet / large phone */
@media(max-width: 768px){
    /* Header */
    .header-inner { padding: 12px 16px; }
    .logo-nu { height: 24px; }
    .header-cta { padding: 9px 16px; font-size: .82rem; }
    /* Trust ribbon */
    .trust-ribbon { margin-top: 49px; }
    .trust-ribbon-inner { font-size: .72rem; padding: 8px 14px; gap: 6px; }
    .trust-ribbon .tr-extra { display: none; }
    /* Hero */
    .hero { padding: 40px 0 52px; }
    .hero-sub { font-size: 1rem; }
    /* Sections */
    .how-section { padding: 64px 0; }
    .about-section { padding: 64px 0; }
    .about-section .row > div:first-child { margin-bottom: 32px; }
    .about-section .row > div:last-child { margin-top: 0; }
    /* Urgency */
    .urgency-section { padding: 56px 0; }
    .urgency-card { padding: 34px 22px; }
    .urgency-stats { gap: 24px; }
    /* CTA */
    .cta-banner { padding: 60px 0; }
    .cta-banner-btn { padding: 15px 28px; font-size: .96rem; }
    /* Footer */
    .footer-nu { padding: 40px 18px 24px; }
    .footer-security { padding: 18px 18px; }
}

/* Small phone (most Android / iPhone SE) */
@media(max-width: 480px){
    /* Header — esconde botão do header no espaço mínimo, CTA da seção já cobre */
    .header-cta { display: none; }
    /* Hero */
    .hero { padding: 32px 0 44px; }
    .hero-title { font-size: 2rem; letter-spacing: -.03em; }
    .hero-eyebrow { font-size: .68rem; letter-spacing: 1.6px; margin-bottom: 16px; }
    .hero-sub { font-size: .96rem; margin-bottom: 28px; }
    /* CPF card */
    .cpf-card { padding: 22px 18px; border-radius: 16px; }
    .cpf-input { font-size: 1.1rem; padding: 15px 16px; }
    .cpf-btn { padding: 15px 20px; font-size: .96rem; }
    /* How */
    .how-step { padding: 26px 22px; }
    /* About trust */
    .about-trust { gap: 16px; }
    /* Urgency */
    .urgency-stats { flex-direction: column; align-items: center; gap: 18px; }
    .urgency-stat-num { font-size: 1.5rem; }
    .urgency-card { padding: 28px 18px; border-radius: 18px; }
    /* CTA */
    .cta-banner-title { font-size: 1.7rem; }
    .cta-banner-btn { padding: 15px 22px; font-size: .94rem; width: 100%; justify-content: center; }
    .cta-trust { gap: 12px; font-size: .82rem; }
    /* Footer */
    .footer-security { flex-direction: column; gap: 10px; border-radius: 12px; }
    .footer-nu-legal { font-size: .74rem; }
    .footer-nu-copyright { font-size: .7rem; }
}

/* Extra small — iPhone SE 1st gen, Galaxy A series */
@media(max-width: 360px){
    .hero-title { font-size: 1.78rem; }
    .cpf-card { padding: 18px 14px; }
    .cpf-input { font-size: 1rem; padding: 13px 14px; }
    .cta-banner-title { font-size: 1.5rem; }
}