:root {
    /* Colors */
    --clr-black: #010404;
    --clr-green: #6FB03A;
    --clr-blue: #31A8A8;
    --clr-light: #E6E8E6;
    --clr-gray: #7d8482;
    --clr-dark-gray: #151a1a;
    
    /* Gradients */
    --gradient-brand: linear-gradient(135deg, var(--clr-green) 0%, var(--clr-blue) 100%);
    --gradient-glow: linear-gradient(135deg, rgba(111, 176, 58, 0.4) 0%, rgba(49, 168, 168, 0.4) 100%);
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif; /* Substituta de BioSans */
    --font-body: 'Montserrat', sans-serif;
    --font-bebas: 'Bebas Neue', sans-serif;
    
    /* Spacing & Layout */
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    
    /* Shapes */
    /* 2 pontas arredondadas (1/4 círculo) e 2 pontas retas (90deg) */
    --radius-brand: 24px 0px 24px 0px; 
    --radius-brand-alt: 0px 24px 0px 24px;
}

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

body {
    background-color: var(--clr-black);
    color: var(--clr-light);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Global Grid */
.global-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    background-image: 
        linear-gradient(rgba(49, 168, 168, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(49, 168, 168, 0.04) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.6;
}

/* Utility Classes */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.max-narrow {
    max-width: 800px;
}

.container-flex {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.text-center { text-align: center; }
.text-gradient {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}
.text-gray { color: var(--clr-gray); }

.font-outfit { font-family: var(--font-heading); font-weight: 700; }
.font-bebas { font-family: var(--font-bebas); letter-spacing: 2px;}
.font-bold { font-weight: 700; }

.mb-3 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

.shape-brand {
    border-radius: var(--radius-brand);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.shape-brand-alt {
    border-radius: var(--radius-brand-alt);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Typography styles */
h1, h2, h3, h4, .section-title {
    font-family: var(--font-heading);
    color: #fff;
    line-height: 1.2;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    font-weight: 800;
}

.section-title span {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.big-title {
    font-size: clamp(3rem, 6vw, 5rem);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-brand);
    transition: all 0.3s ease;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    border: none;
}

.btn-primary {
    background: var(--gradient-brand);
    color: var(--clr-black);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 100%; height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: all 0.4s ease;
    z-index: -1;
    transform: skewX(-15deg);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(49, 168, 168, 0.3);
}

.btn-secondary {
    background: rgba(49, 168, 168, 0.1);
    color: var(--clr-light);
    border: 1px solid rgba(49, 168, 168, 0.3);
}

.btn-secondary:hover {
    background: rgba(49, 168, 168, 0.2);
    border-color: var(--clr-blue);
}

.btn-outline {
    background: transparent;
    color: var(--clr-light);
    border: 1px solid var(--clr-gray);
}

.btn-outline:hover {
    border-color: var(--clr-blue);
    color: var(--clr-blue);
}

.btn-large {
    padding: 1.5rem 3rem;
    font-size: 1.1rem;
}

/* --- SECTIONS --- */
section {
    padding: var(--space-xl) 0;
    position: relative;
}

/* HEADER */
.main-header {
    position: fixed;
    top: 0; width: 100%;
    padding: 1.5rem 0;
    z-index: 100;
    background: rgba(1, 4, 4, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo-horizontal {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-a {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 900;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.main-nav a {
    color: var(--clr-light);
    text-decoration: none;
    margin: 0 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
}

.main-nav a:hover {
    color: var(--clr-green);
}

/* HERO SECTION */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    background: radial-gradient(circle at center, rgba(49, 168, 168, 0.1) 0%, var(--clr-black) 70%);
}

.hero-content {
    max-width: 800px;
}

.hero-event-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(111, 176, 58, 0.1);
    color: var(--clr-green);
    border: 1px solid var(--clr-green);
    border-radius: 4px;
    border-top-left-radius: 12px;
    border-bottom-right-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.hero-title span {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--clr-blue);
    margin-bottom: 1.5rem;
    padding-left: 1rem;
    border-left: 4px solid var(--clr-green);
}

.hero-text {
    font-size: 1.1rem;
    color: var(--clr-light);
    opacity: 0.9;
    margin-bottom: 2.5rem;
    max-width: 650px;
}

.hero-event-info {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    font-family: var(--font-heading);
}

.event-detail {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--clr-gray);
}

.event-detail i {
    color: var(--clr-blue);
    font-size: 1.5rem;
}

.hero-ctas {
    display: flex;
    gap: 1rem;
}

.decor-line {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 60%;
    background: linear-gradient(to bottom, transparent, var(--clr-blue), transparent);
    opacity: 0.5;
}

.decor-line.left { left: 40px; }
.decor-line.right { right: 40px; }

/* TWO COLUMNS */
.two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.two-columns.inverse {
    grid-template-columns: 1fr 0.8fr;
}

.auth-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--clr-light);
    opacity: 0.8;
}

/* BADGES */
.auth-badges {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.badge-card {
    background: var(--clr-dark-gray);
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: transform 0.3s ease;
}

.badge-card:hover {
    transform: translateX(-10px);
    background: rgba(49, 168, 168, 0.05);
    border-color: rgba(49, 168, 168, 0.3);
}

.badge-card i {
    font-size: 2.5rem;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge-info strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: #fff;
    line-height: 1.2;
}

.badge-info span {
    font-size: 0.9rem;
    color: var(--clr-gray);
}

/* TRANSFORMATION */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.benefit-card {
    background: var(--clr-dark-gray);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-brand);
    opacity: 0;
    transition: opacity 0.3s;
}

.benefit-card:hover {
    transform: translateY(-5px);
}

.benefit-card:hover::before {
    opacity: 1;
}

.benefit-card.wide {
    grid-column: span 2;
    background: linear-gradient(to right, var(--clr-dark-gray), rgba(49, 168, 168, 0.1));
}

.b-icon i {
    font-size: 2rem;
    color: var(--clr-green);
    margin-bottom: 1rem;
}

.benefit-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

/* MOTIVATION SECTION */
.highlight-p {
    font-size: 1.3rem;
    font-family: var(--font-heading);
    color: #fff;
    margin-bottom: 1rem;
}

.comparison-list {
    list-style: none;
    margin-top: 2rem;
}

.comparison-list li {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.comparison-list i {
    font-size: 1.5rem;
    margin-top: 2px;
}

/* Fake Interface / Mockup */
.mot-image {
    width: 100%;
    height: 400px;
    background: var(--clr-dark-gray);
    position: relative;
    border: 1px solid rgba(49, 168, 168, 0.2);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    overflow: hidden;
}

.fake-interface {
    width: 100%; height: 100%;
    display: flex; flex-direction: column;
}

.fi-header {
    height: 30px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    padding: 0 1rem;
    gap: 6px;
}

.fi-header span {
    width: 10px; height: 10px; border-radius: 50%;
    background: var(--clr-gray);
}

.fi-body {
    flex: 1;
    position: relative;
    padding: 2rem;
    background: linear-gradient(45deg, rgba(49, 168, 168, 0.05) 25%, transparent 25%, transparent 75%, rgba(49, 168, 168, 0.05) 75%, rgba(49, 168, 168, 0.05)),
                linear-gradient(45deg, rgba(49, 168, 168, 0.05) 25%, transparent 25%, transparent 75%, rgba(49, 168, 168, 0.05) 75%, rgba(49, 168, 168, 0.05));
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
}

.fi-layer {
    position: absolute;
    background: rgba(111, 176, 58, 0.2);
    border: 1px solid var(--clr-green);
    transform: rotateX(60deg) rotateZ(30deg);
    border-radius: 8px;
}

.l1 { width: 150px; height: 150px; top: 100px; left: 100px; }
.l2 { width: 180px; height: 120px; top: 180px; left: 180px;  background: rgba(49, 168, 168, 0.2); border-color: var(--clr-blue);}
.l3 { width: 100px; height: 100px; top: 50px; left: 220px; }

/* TIMELINE (Curriculum) */
.timeline {
    position: relative;
    padding-left: 2rem;
    margin-top: 3rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0; top: 0;
    width: 2px; height: 100%;
    background: linear-gradient(to bottom, var(--clr-green), var(--clr-blue));
}

.tl-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 1.5rem;
}

.tl-dot {
    position: absolute;
    left: -2rem; top: 5px;
    width: 16px; height: 16px;
    background: var(--clr-black);
    border: 2px solid var(--clr-blue);
    border-radius: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 10px var(--clr-blue);
}

.tl-item strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 0.2rem;
}

.tl-item span {
    font-size: 0.9rem;
    color: var(--clr-gray);
}

.how-it-works {
    background: var(--clr-dark-gray);
    padding: 2rem;
    text-align: center;
}

.how-it-works h3 { font-size: 1.5rem; margin-bottom: 1rem; color: var(--clr-green); }

/* OFFER SECTION */
.offer-box {
    flex: 1;
    min-width: 300px;
    background: var(--clr-dark-gray);
    padding: 3rem;
}

.custom-bullets {
    list-style: none;
}

.custom-bullets li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.custom-bullets li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--clr-green);
    font-family: monospace;
}

.change-steps {
    margin-top: 2rem;
}

.step {
    padding: 1rem;
    border-left: 2px solid rgba(255,255,255,0.1);
    margin-bottom: 1rem;
    transition: all 0.3s;
}

.step:hover {
    border-left-color: var(--clr-blue);
    background: rgba(255,255,255,0.02);
    padding-left: 1.5rem;
}

/* FACULTY */
.faculty-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}

.prof-card {
    background: var(--clr-dark-gray);
    padding: 2rem 1rem;
    width: 200px;
    text-align: center;
    transition: transform 0.3s;
}

.prof-card:hover { transform: translateY(-10px); }

.prof-img {
    width: 80px; height: 80px;
    margin: 0 auto 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem; color: var(--clr-gray);
    border: 2px solid var(--clr-blue);
    position: relative;
}

.prof-img::after {
    content: '';
    position: absolute;
    top: -5px; left: -5px; right: -5px; bottom: -5px;
    border: 1px dashed var(--clr-green);
    border-radius: 50%;
    animation: spin 10s linear infinite;
}

@keyframes spin { 100% { transform: rotate(360deg); } }

/* FAQ */
.faq-list {
    margin-top: 3rem;
}

.faq-item {
    background: var(--clr-dark-gray);
    margin-bottom: 1rem;
    border-radius: var(--radius-brand);
    border: 1px solid rgba(255,255,255,0.05);
    overflow: hidden;
}

.faq-q {
    padding: 1.5rem 2rem;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: rgba(255,255,255,0.02);
}

.faq-q i { transition: transform 0.3s; }
.faq-q.active i { transform: rotate(180deg); color: var(--clr-green); }

.faq-a {
    padding: 0 2rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    opacity: 0;
}

.faq-item.active .faq-a {
    padding: 1.5rem 2rem;
    max-height: 200px;
    opacity: 1;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* FOOTER */
.main-footer {
    background: var(--clr-dark-gray);
    border-top: 1px solid rgba(49, 168, 168, 0.3);
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 400px;
}

.footer-brand .logo-horizontal {
    margin-bottom: 1rem;
}

.footer-brand p { color: var(--clr-gray); }

.footer-event p {
    display: flex; align-items: center; gap: 0.5rem;
    margin-top: 0.5rem;
    color: var(--clr-light);
}

.footer-event i { color: var(--clr-green); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 2rem;
    color: var(--clr-gray);
    font-size: 0.9rem;
}

/* RESPONSIVE */
@media (max-width: 900px) {
    .two-columns, .two-columns.inverse { grid-template-columns: 1fr; }
    .hero-content { text-align: center; margin: 0 auto; }
    .hero-ctas, .hero-event-info { justify-content: center; }
    .header-cta { display: none; }
    .decor-line { display: none; }
    .benefits-grid { grid-template-columns: 1fr; }
    .benefit-card.wide { grid-column: span 1; }
    .cta-actions { display: flex; flex-direction: column; gap: 1rem; }
    section { padding: var(--space-lg) 0; }
}

@media (max-width: 600px) {
    .hero-title { font-size: 2rem; }
    .section-title { font-size: 1.8rem; }
    .big-title { font-size: 2.2rem; }
}