/* Catarata Refrativa 2014 - Styles */
/* Cores: Azul claro e branco (visão, clareza) */

:root {
    --cor-azul-claro: #87CEEB;
    --cor-azul-medio: #4682B4;
    --cor-azul-escuro: #1e3a5f;
    --cor-branco: #ffffff;
    --cor-cinza-claro: #f8f9fa;
    --cor-cinza-medio: #e9ecef;
    --cor-cinza-escuro: #495057;
    --sombra-azul: 0 4px 15px rgba(135, 206, 235, 0.3);
    --sombra-cinza: 0 2px 8px rgba(0, 0, 0, 0.1);
    --borda-arredondada: 10px;
    --fonte-principal: 'Roboto', sans-serif;
}

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

body {
    font-family: var(--fonte-principal);
    line-height: 1.6;
    color: var(--cor-cinza-escuro);
    background: linear-gradient(135deg, #F8F9FA 0%, #FFFFFF 30%, #E6F7FF 70%, #F8F9FA 100%);
    background-attachment: fixed;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 30%, rgba(135, 206, 235, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(70, 130, 180, 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

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

/* Header */
.site-header {
    background: linear-gradient(135deg, #4682B4 0%, #5B9BD5 50%, #87CEEB 100%);
    background-size: 200% 200%;
    color: var(--cor-branco);
    padding: 2rem 0;
    box-shadow: 0 8px 32px rgba(135, 206, 235, 0.25),
                0 4px 12px rgba(70, 130, 180, 0.15);
    position: relative;
    backdrop-filter: blur(10px);
    animation: headerGradient 8s ease infinite;
}

@keyframes headerGradient {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.site-header::before {
    content: '🔬👁️🔬';
    position: absolute;
    top: -15px;
    right: 5%;
    font-size: 2rem;
    opacity: 0.3;
    transform: rotate(15deg);
}

.logo h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    background: linear-gradient(45deg, var(--cor-branco), #E0FFFF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo .tagline {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
}

.main-navigation ul {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-top: 2rem;
}

.main-navigation a {
    color: var(--cor-branco);
    text-decoration: none;
    font-weight: 500;
    padding: 0.8rem 1.5rem;
    border-radius: var(--borda-arredondada);
    transition: all 0.3s ease;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.main-navigation a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--cor-azul-claro) 0%, var(--cor-azul-medio) 100%);
    padding: 5rem 0;
    text-align: center;
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="medical" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="2" fill="%23FFFFFF" opacity="0.3"/><circle cx="5" cy="15" r="1" fill="%234682B4"/><circle cx="15" cy="5" r="1.5" fill="%2387CEEB"/></pattern></defs><rect width="100" height="100" fill="url(%23medical)"/></svg>');
    opacity: 0.1;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto 3rem auto;
}

.hero h2 {
    font-size: 4rem;
    margin-bottom: 2rem;
    color: var(--cor-branco);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: 700;
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 3rem;
    color: var(--cor-branco);
    font-weight: 300;
    line-height: 1.8;
    opacity: 0.95;
}

.cta-button {
    display: inline-block;
    background: var(--cor-branco);
    color: var(--cor-azul-medio);
    padding: 1.2rem 3rem;
    text-decoration: none;
    border-radius: var(--borda-arredondada);
    font-weight: 600;
    font-size: 1.2rem;
    transition: all 0.4s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '📋';
    position: absolute;
    left: -30px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.3rem;
    transition: left 0.5s ease;
}

.cta-button:hover::before {
    left: 20px;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    background: #F0F8FF;
}

.hero-image {
    position: relative;
    z-index: 1;
    max-width: 300px;
    margin: 0 auto;
}

.image-placeholder {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    background: var(--cor-branco);
    border-radius: var(--borda-arredondada);
    box-shadow: var(--sombra-azul);
}

.image-caption {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--cor-azul-medio);
    color: var(--cor-branco);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

/* Main Content */
.main-content {
    padding: 4rem 0;
}

.content-section {
    margin-bottom: 4rem;
    background: var(--cor-branco);
    border-radius: var(--borda-arredondada);
    padding: 3rem;
    box-shadow: var(--sombra-cinza);
    border: 1px solid var(--cor-cinza-medio);
}

.content-section h2 {
    font-size: 2.8rem;
    color: var(--cor-azul-medio);
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
    font-weight: 600;
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--cor-azul-claro), var(--cor-azul-medio));
    border-radius: 2px;
}

.content-section h3 {
    font-size: 1.9rem;
    color: var(--cor-azul-escuro);
    margin: 3rem 0 1.5rem 0;
    font-weight: 600;
}

.content-section p {
    margin-bottom: 1.5rem;
    text-align: justify;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--cor-cinza-escuro);
}

/* Programação */
.programacao-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.dia-programacao {
    background: var(--cor-cinza-claro);
    border-radius: var(--borda-arredondada);
    padding: 2rem;
    border-left: 4px solid var(--cor-azul-medio);
}

.dia-programacao h3 {
    color: var(--cor-azul-medio);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.dia-programacao ul {
    list-style: none;
}

.dia-programacao li {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--cor-cinza-medio);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.dia-programacao li:last-child {
    border-bottom: none;
}

.dia-programacao strong {
    color: var(--cor-azul-escuro);
    font-weight: 600;
    min-width: 120px;
}

/* Palestrantes */
.palestrantes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.palestrante-card {
    background: var(--cor-branco);
    border-radius: var(--borda-arredondada);
    overflow: hidden;
    box-shadow: var(--sombra-cinza);
    transition: all 0.3s ease;
    border: 2px solid var(--cor-azul-claro);
}

.palestrante-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(135, 206, 235, 0.3);
}

.palestrante-image {
    height: 180px;
    background: linear-gradient(135deg, var(--cor-azul-claro), var(--cor-azul-medio));
    display: flex;
    align-items: center;
    justify-content: center;
}

.palestrante-image .image-placeholder {
    font-size: 3rem;
}

.palestrante-info {
    padding: 1.5rem;
    text-align: center;
}

.palestrante-info h3 {
    color: var(--cor-azul-medio);
    margin-bottom: 0.5rem;
    font-size: 1.4rem;
    font-weight: 600;
}

.especialidade {
    color: var(--cor-azul-claro);
    font-weight: 500;
    margin-bottom: 1rem;
    font-style: italic;
}

.palestrante-info p {
    color: var(--cor-cinza-escuro);
    font-size: 1rem;
}

/* Expositores */
.expositores-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.expositor-card {
    background: var(--cor-cinza-claro);
    border-radius: var(--borda-arredondada);
    padding: 2rem;
    text-align: center;
    border: 2px solid var(--cor-azul-claro);
    transition: all 0.3s ease;
}

.expositor-card:hover {
    background: var(--cor-branco);
    transform: translateY(-3px);
    box-shadow: var(--sombra-azul);
}

.expositor-card h3 {
    color: var(--cor-azul-medio);
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.expositor-card p {
    color: var(--cor-cinza-escuro);
    font-size: 1rem;
    line-height: 1.6;
}

/* Arquivos */
.arquivos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.arquivo-card {
    background: var(--cor-branco);
    border-radius: var(--borda-arredondada);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--sombra-cinza);
    border: 2px solid var(--cor-azul-claro);
    transition: all 0.3s ease;
}

.arquivo-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(135, 206, 235, 0.3);
}

.arquivo-card h3 {
    color: var(--cor-azul-medio);
    margin-bottom: 1rem;
    font-size: 1.4rem;
    font-weight: 600;
}

.arquivo-card p {
    color: var(--cor-cinza-escuro);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.download-button {
    background: var(--cor-azul-medio);
    color: var(--cor-branco);
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: var(--borda-arredondada);
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.download-button:hover {
    background: var(--cor-azul-claro);
    transform: scale(1.05);
}

/* Footer */
.site-footer {
    background: var(--cor-azul-medio);
    color: var(--cor-branco);
    padding: 4rem 0 2rem 0;
    margin-top: 4rem;
    position: relative;
}

.site-footer::before {
    content: '🔬👁️📚';
    position: absolute;
    top: -25px;
    left: 10%;
    font-size: 2rem;
    opacity: 0.3;
    transform: rotate(-5deg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--cor-branco);
    position: relative;
    font-weight: 600;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--cor-azul-claro);
}

.footer-section p {
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.7;
}

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

.footer-section li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: #E0FFFF;
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

.footer-section a:hover {
    color: var(--cor-branco);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}

.footer-bottom p {
    margin-bottom: 0.5rem;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* WhatsApp Button */
.whatsapp-button {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #25d366;
    color: white;
    padding: 1.2rem 1.8rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
    transition: all 0.4s ease;
    z-index: 1000;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
}

.whatsapp-button:hover {
    transform: scale(1.1) translateY(-3px);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.5);
}

.whatsapp-button::before {
    content: '💬';
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--cor-cinza-claro);
}

::-webkit-scrollbar-thumb {
    background: var(--cor-azul-medio);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--cor-azul-claro);
}