:root {
    --primary-bg: #ffffff;
    --text-color: #212529;
    --card-bg: #f8f9fa;
    --gold-accent: #d4af37;
    --card-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --primary-bg: #1a1a1a;
    --text-color: #e9ecef;
    --card-bg: #2c2c2c;
    --gold-accent: #e6c200;
    --card-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-color);
    transition: all 0.3s ease;
}

header {
    background: linear-gradient(135deg, #212529, #343a40);
    box-shadow: var(--card-shadow);
}

.navbar-nav .nav-link {
    color: #ffffff !important;
    font-weight: 500;
    padding: 10px 15px;
    transition: color 0.3s ease, background 0.3s ease;
    border-radius: 5px;
}

.navbar-nav .nav-link:hover {
    color: var(--gold-accent) !important;
    background: rgba(255, 255, 255, 0.1);
}

.theme-toggle {
    width: 50px;
    position: fixed;
    top: 80px;
    right: 30px;
    background: rgb(194, 194, 194);
    border: none;
    border-radius: 5px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
    z-index: 9999;
}

.whatsapp-fix {
    width: 70px;
    height: 70px;
    padding: 0px;
    position: fixed;
    top: 80vh;
    right: 30px;
    background: rgb(0, 97, 13);
    border: 3px solid white;
    border-radius: 100px;
    box-shadow: #1a1a1a6e 2px 2px 2px;
    font-size: 2rem;
    cursor: pointer;
    z-index: 9999;
}

.whatsapp-fix i{
    color: #ffffff;
}

.whatsapp-fix:hover{
    background-color: rgb(0, 165, 8);
    border-color: #e7e7e7;
    box-shadow: #1a1a1a6e 5px 5px 5px;
    transform: translateY(-2px);
}

.voltar-topo  {
    width: 70px;
    height: 70px;
    padding: 0px;
    position: fixed;
    top: 90vh;
    right: 30px;
    background: var(--gold-accent);
    border: 3px solid white;
    border-radius: 100px;
    box-shadow: #1a1a1a6e 2px 2px 2px;
    font-size: 2rem;
    cursor: pointer;
    z-index: 9999;
}

.voltar-topo i{
    color: var(--text-color);
}

.voltar-topo:hover{
    background-color: #e6c200;
    border-color: #e7e7e7;
    box-shadow: #1a1a1a6e 5px 5px 5px;
    transform: translateY(-2px);
}

.btn-gold {
    background-color: var(--gold-accent);
    border-color: var(--gold-accent);
    color: #fff;
    font-weight: 500;
    padding: 12px 30px;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-gold:hover {
    background-color: #b8860b;
    border-color: #b8860b;
    transform: translateY(-2px);
}

.card {
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
    border: none;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

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

.hero-section {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 80px 0;
}

.floating-img {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

.portfolio-img {
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.portfolio-img:hover {
    transform: scale(1.05);
}

.form-control, .form-select {
    border-radius: 10px;
    border: 1px solid #ced4da;
    transition: border-color 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--gold-accent);
    box-shadow: 0 0 5px rgba(212, 175, 55, 0.5);
}

footer {
    background: linear-gradient(135deg, #212529, #343a40);
}

@media (max-width: 768px) {

    .btn-gold {
        padding: 10px 20px;
    }

    .navbar-nav {
        background: #343a40;
        padding: 15px;
        border-radius: 10px;
    }

    .sticky-top .navbar .container .nav-brand .brand-txt small{
        background-color: red;
        display: none;
    }

    .navbar-toggler{
        background-color: var(--gold-accent);
        color: #ffffff;
    }

    .navbar-toggler-icon{
        background-color: rgba(255, 0, 0, 0);
    }    
    
    .theme-toggle {
        top: 80px;
        right: 15px;
    }

    .whatsapp-fix{
        top: 95vh;
        right: 15px;
    }

    .voltar-topo{
        top:105vh;
        right: 15px;
    }

    .hero-section {
        padding: 40px 0;
    }

    .hero-section h2 {
        font-size: 2rem;
    }

    .hero-section .container #topo{background-color: rgba(255, 0, 0, 0);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column-reverse;
    }    
    
    .portfolio-img {
        margin-bottom: 20px;
    }
}