:root {
    --primary-color: #2c3e50;
    --secondary-color: #1abc9c;
    --dark-gray: #343a40;
    --light-gray: #f8f9fa;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

.hero-section {
    background: url('../img/hckathon-9-edicao-nasa.jpg') no-repeat center center;
    background-size: cover; /* Isso faz a imagem cobrir toda a área */
    color: white;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    z-index: 2;
}

.hackathon-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hackathon-subtitle {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    font-weight: 300;
}

.hackathon-logo {
    font-size: 5rem;
    font-weight: bold;
    margin-bottom: 2rem;
    color: var(--secondary-color);
}

.registration-box {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    max-width: 500px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.section-title:after {
    content: '';
    position: absolute;
    width: 50%;
    height: 4px;
    background: var(--secondary-color);
    bottom: -10px;
    left: 0;
}

.programming-card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
    margin-bottom: 20px;
}

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

.card-header {
    background-color: var(--primary-color);
    color: white;
    font-weight: bold;
}

.theme-badge {
    background-color: var(--secondary-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-right: 10px;
    margin-bottom: 10px;
    display: inline-block;
}

footer {
    background-color: var(--dark-gray);
    color: white;
    padding: 2rem 0;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
    z-index: 1;
}

.floating-element {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.btn-hackathon {
    background-color: var(--secondary-color);
    color: white;
    font-weight: bold;
    padding: 10px 25px;
    border-radius: 30px;
    border: none;
    transition: all 0.3s;
}

.btn-hackathon:hover {
    background-color: #16a085;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.form-control:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.25rem rgba(26, 188, 156, 0.25);
}

/* Estilos específicos para o menu */
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    transition: all 0.3s;
}

.hackathon-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary-color);
}

.nav-link {
    font-weight: 500;
    padding: 8px 15px !important;
    border-radius: 4px;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.navbar {
    background-color: transparent !important;
    box-shadow: none;
    padding: 15px 0;
    transition: all 0.3s;
}

.navbar.scrolled {
    padding: 10px 0;
    background-color: rgba(52, 58, 64, 0.95) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}