:root {
    --bg-main: #070a16;
    --bg-secondary: #0d1024;
    --bg-card: rgba(255, 255, 255, 0.075);
    --bg-card-strong: rgba(255, 255, 255, 0.12);

    --text-main: #ffffff;
    --text-muted: #b8bdd8;
    --text-soft: #858ba8;

    --blue: #00b8ff;
    --cyan: #24e4ff;
    --yellow: #ffbf00;
    --magenta: #e91e85;
    --purple: #6535d8;

    --border: rgba(255, 255, 255, 0.13);
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);

    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 28px;

    --container: 1180px;
}

/* Reset básico */

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg-main);
    color: var(--text-main);
    overflow-x: hidden;
}

/* Fundo */

.page-bg {
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(circle at 18% 18%, rgba(0, 184, 255, 0.22), transparent 32%),
        radial-gradient(circle at 82% 14%, rgba(233, 30, 133, 0.22), transparent 30%),
        radial-gradient(circle at 50% 95%, rgba(101, 53, 216, 0.28), transparent 36%),
        linear-gradient(135deg, #050712 0%, #0b0e22 45%, #070a16 100%);
}

.page-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0.75), transparent 90%);
}

/* Base */

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

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

img {
    max-width: 100%;
    display: block;
}

/* Header */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 18px 0;
    background: rgba(7, 10, 22, 0.78);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.brand {
    width: 250px;
    flex: 0 0 auto;
}

.brand img {
    width: 100%;
    height: auto;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 22px;
    font-size: 14px;
    color: var(--text-muted);
}

.main-nav a {
    transition: 0.25s ease;
}

.main-nav a:hover {
    color: #ffffff;
}

.nav-login {
    padding: 11px 18px;
    border-radius: 999px;
    color: #101010 !important;
    font-weight: 700;
    background: linear-gradient(135deg, var(--yellow), #ffdf64);
    box-shadow: 0 0 28px rgba(255, 191, 0, 0.28);
}

/* Hero */

.hero {
    padding: 84px 0 70px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.12fr 0.88fr;
    gap: 44px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    padding: 8px 13px;
    border: 1px solid rgba(255, 191, 0, 0.35);
    border-radius: 999px;
    color: #ffe293;
    background: rgba(255, 191, 0, 0.08);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.hero-text h1 {
    max-width: 740px;
    font-size: clamp(38px, 5vw, 72px);
    line-height: 0.98;
    letter-spacing: -2.7px;
    margin-bottom: 24px;
}

.hero-text p {
    max-width: 650px;
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 32px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border: 0;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 800;
    cursor: pointer;
    transition: 0.25s ease;
}

.btn-primary {
    color: #101010;
    background: linear-gradient(135deg, var(--yellow), #ffdd55);
    box-shadow: 0 0 36px rgba(255, 191, 0, 0.32);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 48px rgba(255, 191, 0, 0.45);
}

.btn-secondary {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.09);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-2px);
}

.hero-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 40px;
}

.hero-highlights div {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.055);
    backdrop-filter: blur(14px);
}

.hero-highlights strong {
    display: block;
    margin-bottom: 6px;
    color: #ffffff;
    font-size: 15px;
}

.hero-highlights span {
    display: block;
    color: var(--text-soft);
    font-size: 13px;
    line-height: 1.45;
}

/* Login */

.login-card {
    position: relative;
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.055)),
        rgba(255, 255, 255, 0.06);
    box-shadow: var(--shadow);
    backdrop-filter: blur(24px);
    overflow: hidden;
}

.login-card::before {
    content: "";
    position: absolute;
    inset: -2px;
    background:
        linear-gradient(135deg, rgba(255,191,0,0.55), transparent 30%),
        linear-gradient(315deg, rgba(0,184,255,0.45), transparent 30%),
        linear-gradient(45deg, rgba(233,30,133,0.35), transparent 35%);
    opacity: 0.55;
    z-index: -1;
}

.login-card::after {
    content: "";
    position: absolute;
    inset: 1px;
    background: rgba(9, 12, 29, 0.92);
    border-radius: calc(var(--radius-lg) - 1px);
    z-index: -1;
}

.login-card-header span {
    display: block;
    color: var(--yellow);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 10px;
}

.login-card-header h2 {
    font-size: 34px;
    margin-bottom: 8px;
}

.login-card-header p {
    color: var(--text-muted);
    line-height: 1.55;
    margin-bottom: 26px;
}

.login-form {
    display: grid;
    gap: 17px;
}

.form-group {
    display: grid;
    gap: 8px;
}

.form-group label {
    font-size: 13px;
    color: #ffffff;
    font-weight: 700;
}

.form-group input {
    width: 100%;
    height: 50px;
    padding: 0 15px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 14px;
    outline: none;
    background: rgba(255, 255, 255, 0.075);
    color: #ffffff;
    font-size: 15px;
    transition: 0.25s ease;
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.42);
}

.form-group input:focus {
    border-color: rgba(255, 191, 0, 0.75);
    box-shadow: 0 0 0 4px rgba(255, 191, 0, 0.11);
}

.btn-login {
    width: 100%;
    min-height: 52px;
    color: #101010;
    background: linear-gradient(135deg, var(--yellow), var(--magenta));
    margin-top: 4px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 34px rgba(233, 30, 133, 0.28);
}

.login-note {
    color: var(--text-soft);
    font-size: 13px;
    line-height: 1.55;
    text-align: center;
}

/* Sections */

.section {
    padding: 82px 0;
}

.section-title {
    max-width: 760px;
    margin-bottom: 36px;
}

.section-title span {
    display: inline-block;
    margin-bottom: 12px;
    color: var(--yellow);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

.section-title h2 {
    font-size: clamp(30px, 3.6vw, 48px);
    line-height: 1.08;
    letter-spacing: -1.4px;
    margin-bottom: 16px;
}

.section-title p {
    color: var(--text-muted);
    font-size: 17px;
    line-height: 1.7;
}

/* About */

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.9fr 0.9fr;
    gap: 18px;
}

.about-card,
.step-card,
.panel-card,
.security-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    backdrop-filter: blur(18px);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.23);
}

.about-card {
    min-height: 260px;
    padding: 28px;
}

.about-card h3 {
    font-size: 22px;
    margin-bottom: 14px;
}

.about-card p {
    color: var(--text-muted);
    line-height: 1.75;
}

.featured-card {
    background:
        linear-gradient(135deg, rgba(255,191,0,0.16), rgba(233,30,133,0.08)),
        rgba(255, 255, 255, 0.07);
}

/* Steps */

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.step-card {
    padding: 26px;
    min-height: 245px;
    position: relative;
    overflow: hidden;
}

.step-card::after {
    content: "";
    position: absolute;
    width: 120px;
    height: 120px;
    right: -42px;
    bottom: -42px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,184,255,0.18), transparent 70%);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 36px;
    margin-bottom: 22px;
    border-radius: 999px;
    color: #101010;
    background: linear-gradient(135deg, var(--yellow), #ffe28a);
    font-size: 14px;
    font-weight: 900;
}

.step-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.step-card p {
    color: var(--text-muted);
    line-height: 1.65;
}

/* Panels */

.panels-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.panel-card {
    padding: 22px;
    min-height: 310px;
}

.panel-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--magenta), var(--blue));
    font-weight: 900;
    box-shadow: 0 0 32px rgba(0, 184, 255, 0.2);
}

.panel-card h3 {
    font-size: 19px;
    margin-bottom: 16px;
}

.panel-card ul {
    list-style: none;
    display: grid;
    gap: 10px;
}

.panel-card li {
    position: relative;
    padding-left: 17px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.45;
}

.panel-card li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--yellow);
}

/* Security */

.security-grid {
    display: grid;
    grid-template-columns: 1fr 0.85fr;
    gap: 40px;
    align-items: center;
}

.security-grid h2 {
    font-size: clamp(30px, 3.6vw, 48px);
    line-height: 1.08;
    letter-spacing: -1.4px;
    margin-bottom: 18px;
}

.security-grid p {
    color: var(--text-muted);
    font-size: 17px;
    line-height: 1.75;
    margin-bottom: 16px;
}

.security-card {
    padding: 30px;
}

.security-card h3 {
    font-size: 24px;
    margin-bottom: 22px;
}

.security-item {
    padding: 18px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.security-item:last-child {
    border-bottom: 0;
}

.security-item strong {
    display: block;
    margin-bottom: 6px;
    color: #ffffff;
}

.security-item span {
    color: var(--text-muted);
    line-height: 1.55;
}

/* Footer */

.site-footer {
    padding: 34px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.09);
    background: rgba(5, 7, 18, 0.72);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    color: var(--text-soft);
    font-size: 14px;
}

.footer-content strong {
    display: block;
    color: #ffffff;
    margin-bottom: 5px;
}

.footer-content span {
    color: var(--text-soft);
}

/* Responsivo */

@media (max-width: 1080px) {
    .hero-grid,
    .security-grid {
        grid-template-columns: 1fr;
    }

    .login-card {
        max-width: 620px;
    }

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

    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .panels-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 820px) {
    .site-header {
        position: relative;
    }

    .header-content {
        align-items: flex-start;
        flex-direction: column;
    }

    .brand {
        width: 230px;
    }

    .main-nav {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 4px;
    }

    .hero {
        padding-top: 56px;
    }

    .hero-highlights {
        grid-template-columns: 1fr;
    }

    .steps-grid,
    .panels-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 520px) {
    .container {
        width: min(100% - 26px, var(--container));
    }

    .brand {
        width: 210px;
    }

    .main-nav {
        gap: 15px;
        font-size: 13px;
    }

    .hero-text h1 {
        font-size: 36px;
        letter-spacing: -1.6px;
    }

    .hero-text p,
    .section-title p,
    .security-grid p {
        font-size: 15px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .login-card {
        padding: 22px;
        border-radius: 22px;
    }

    .section {
        padding: 58px 0;
    }

    .about-card,
    .step-card,
    .panel-card,
    .security-card {
        border-radius: 22px;
    }
}