/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: #fff9f3
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-logo {
    height: 50px;
    width: auto;
}

.site-name { color:#1e293b; font-size:1.35rem; font-weight:700; display:block; }
.site-tagline { color:#64748b; font-size:0.7rem; font-weight:600; letter-spacing:.08em; text-transform:uppercase; margin-top:2px; display:block; }

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a { text-decoration:none; color:#334155; font-weight:500; padding:.35rem .2rem; position:relative; transition:color .25s ease; line-height:1.2; }
.nav-menu a::after { content:""; position:absolute; left:0; bottom:-6px; height:2px; width:0; background:#3a8197; transition:width .3s ease; border-radius:2px; }
.nav-menu a:hover, .nav-menu a:focus-visible { color:#3a8197; }
.nav-menu a:hover::after, .nav-menu a:focus-visible::after, .nav-menu a.active::after { width:100%; }
.nav-menu a.active { color:#3a8197; }

.nav-toggle { display:none; background:none; border:1px solid transparent; cursor:pointer; padding:.55rem .6rem; border-radius:10px; transition:.25s; }
.nav-toggle:focus-visible { outline:2px solid #3a8197; outline-offset:3px; }
.nav-toggle .bar { width:26px; height:3px; background:#1e293b; margin:5px 0; border-radius:3px; transition:.4s cubic-bezier(.4,.2,.2,1); display:block; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(1){ transform:translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3){ transform:translateY(-8px) rotate(-45deg); }

@media (max-width: 900px) {
    .nav-toggle { display:flex; flex-direction:column; }
    .nav-menu { position:absolute; top:100%; right:1.25rem; background:#ffffff; flex-direction:column; gap:1rem; width:260px; padding:1.75rem 1.5rem; box-shadow:0 18px 45px -10px rgba(15,23,42,.25); border-radius:20px; transform:translateY(-14px) scale(.96); opacity:0; pointer-events:none; transition:.35s cubic-bezier(.4,.2,.2,1); }
    .nav-menu.active { transform:translateY(0) scale(1); opacity:1; pointer-events:auto; }
    .nav-menu a { padding:.65rem 0; font-size:1rem; }
}

/* Hero Section */
/* --- HERO REFINED --- */
.hero { min-height:70vh; display:flex; align-items:center; position:relative; padding:110px 0 60px; color:#1e293b; background:#ffffff; overflow:hidden; border-bottom:1px solid #e2e8f0; }
.hero::before { content:""; position:absolute; inset:0; background:repeating-linear-gradient(45deg,rgba(58,129,151,0.04) 0 14px, rgba(58,129,151,0) 14px 28px); opacity:.45; pointer-events:none; }
.hero-inner { display:flex; gap:3.5rem; align-items:center; justify-content:space-between; flex-wrap:wrap; width:100%; }
.hero-content { flex:1 1 520px; max-width:700px; }
.hero-content h1.hero-title { font-size:clamp(2.6rem,5vw,3.6rem); line-height:1.05; letter-spacing:-1px; margin:0 0 1rem; background:linear-gradient(90deg,#0f4c5c,#3a8197 60%,#58b8c7); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero-subtitle { font-size:clamp(1.15rem,2.3vw,1.55rem); font-weight:400; line-height:1.35; margin:0 0 1.2rem; color:#334155; text-wrap:balance; }
.hero-description { font-size:.95rem; font-weight:600; letter-spacing:.45px; text-transform:uppercase; margin:0 0 1.6rem; color:#64748b; }
.hero-buttons { display:flex; gap:.9rem; flex-wrap:wrap; align-items:center; }
.hero-buttons .btn { font-size:.95rem; }
.hero-buttons .btn-primary { background:linear-gradient(135deg,#ff8240,#ff3d3d); box-shadow:0 8px 25px -6px rgba(255,92,32,0.55); }
.hero-buttons .btn-primary:hover { background:#ff622e; filter:brightness(1.05); }
.hero-buttons .btn-secondary { border:2px solid #3a8197; color:#3a8197; background:#ffffff; }
.hero-buttons .btn-secondary:hover { background:#3a8197; color:#ffffff; }
.btn-youtube { font-weight:600; }
.hero-image { flex:1 1 340px; display:flex; justify-content:center; align-items:center; position:relative; }
.hero-graphic { width:210px; height:210px; background:linear-gradient(145deg,#f1f5f9,#e2f3f5); border:2px solid #cbd5e1; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:4rem; animation:float 5s ease-in-out infinite; box-shadow:0 10px 28px -10px rgba(0,0,0,0.25); }
.hero-graphic i { color:#3a8197; filter:drop-shadow(0 4px 8px rgba(0,0,0,.25)); }
@media (max-width:1100px){ .hero-inner { gap:2.5rem; } .hero-graphic{ width:230px; height:230px; font-size:4.2rem; } }
@media (max-width:900px){ .hero-inner{ flex-direction:column; text-align:center; } .hero-content h1.hero-title, .hero-subtitle, .hero-description { text-align:center; } .event-date-info { justify-content:center; } .hero-buttons { justify-content:center; } .hero-image { order:-1; } }
@media (max-width:600px){ .hero { padding:95px 0 50px; } .hero-subtitle{ font-size:1.15rem; } .hero-buttons .btn{ width:100%; justify-content:center; } .hero-buttons{ gap:.75rem; } }

.event-date-info { display:flex; gap:1.1rem; margin:2rem 0 2rem; flex-wrap:wrap; justify-content:center; }

.date-highlight, .time-highlight { display:flex; align-items:center; gap:.55rem; background:#f1f5f9; padding:.75rem 1.05rem; border-radius:14px; border:1px solid #d8e2e8; box-shadow:0 2px 6px rgba(0,0,0,0.05); transition:background .25s ease, transform .25s ease; }
.date-highlight:hover, .time-highlight:hover { background:#e2eef2; transform:translateY(-2px); }
.date-highlight i, .time-highlight i { color:#3a8197; font-size:1.05rem; }
.date-text, .time-text { font-weight:600; color:#1e293b; font-size:.9rem; letter-spacing:.25px; }

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    cursor: pointer;
}

.btn-primary {
    background: #3a8197;
    color: white;
}

.btn-primary:hover {
    background: #2d6a7a;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #ffffff;
    color: #3a8197;
    border: 2px solid #3a8197;
}

.btn-secondary:hover {
    background: #3a8197;
    color: #ffffff;
}

/* Botão YouTube */
.btn-youtube {
    background: #ff0000;
    color: #fff;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    box-shadow: 0 6px 18px rgba(255,0,0,0.3);
    position: relative;
}
.btn-youtube .fab.fa-youtube { font-size: 1.3rem; }
.btn-youtube .btn-note {
    font-weight: 500;
    background: rgba(255,255,255,0.15);
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    letter-spacing: .5px;
    text-transform: uppercase;
}
.btn-youtube:hover {
    background: #e00000;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255,0,0,0.4);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-graphic {
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Sections */
.section {
    padding: 5rem 0;
}

.bg-light { background:#d0e2e4; }

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: #64748b;
}

/* Challenge Stats */
.challenge-stats {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.stat-number {
    font-size: 4rem;
    font-weight: 700;
    color: #3a8197;
    margin-bottom: 1rem;
}

.stat-text {
    font-size: 1.2rem;
    color: #64748b;
}

.barriers h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #1e293b;
}

.barriers-list {
    list-style: none;
    margin-bottom: 2rem;
}

.barriers-list li {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.barriers-list i {
    color: #3a8197;
    margin-right: 1rem;
}

.solution {
    background: linear-gradient(135deg, #3a8197, #91c9cd);
    color: white;
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    font-size: 1.2rem;
}

/* Program Features */
.program-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.target-audience {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

.target-audience h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.audience-list {
    list-style: none;
    margin-top: 1rem;
}

.audience-list li {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.audience-list i {
    color: #10b981;
    margin-right: 1rem;
}

/* Talks Grid */
.talks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.talk-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.talk-header {
    background: linear-gradient(135deg, #3a8197, #91c9cd);
    color: white;
    padding: 1.5rem;
}

.talk-time {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.talk-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.talk-speaker {
    font-size: 1rem;
    opacity: 0.9;
}

.talk-content {
    padding: 1.5rem;
}

.talk-description {
    color: #64748b;
    margin-bottom: 1rem;
}

.talk-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: #fff9f3;
    color: #3a8197;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    border: 1px solid #91c9cd;
}

/* Schedule */
.schedule-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.schedule-item {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.schedule-time {
    background: #3a8197;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 10px;
    font-weight: 600;
    min-width: 100px;
    text-align: center;
}

.schedule-content h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.schedule-content p {
    color: #64748b;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #1e293b, #334155);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Contact */
.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.contact-item i {
    font-size: 2rem;
    color: #3a8197;
}

.contact-item h4 {
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.contact-item p {
    color: #64748b;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #91c9cd;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #91c9cd;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #3a8197;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #94a3b8;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 100px 1rem 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .event-date-info {
        flex-direction: column;
        gap: 1rem;
    }
    
    .date-highlight, .time-highlight {
        justify-content: center;
    }
    
    .challenge-stats {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .program-features {
        grid-template-columns: 1fr;
    }
    
    .talks-grid {
        grid-template-columns: 1fr;
    }
    
    .speakers-grid {
        grid-template-columns: 1fr;
    }
    
    .schedule-blocks {
        grid-template-columns: 1fr;
    }
    
    .schedule-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .date-text, .time-text {
        font-size: 0.9rem;
    }
    
    .date-highlight, .time-highlight {
        padding: 0.6rem 1rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 3rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading Animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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