:root {
    --bg-color: #f4f7f6;
    --text-color: #2b2b2b;
    --card-bg: #ffffff;
    --primary: #007bff;
    --primary-hover: #0056b3;
    --whatsapp: #25D366;
    --whatsapp-hover: #1EBE5D;
    --border-radius: 16px;
    --transition: 0.3s ease-in-out;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --primary: #4da3ff;
    --primary-hover: #1a8cff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color var(--transition), color var(--transition);
}

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

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--card-bg);
    border: none;
    color: var(--text-color);
    padding: 10px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    z-index: 1000;
    transition: var(--transition);
}
.theme-toggle:hover {
    transform: scale(1.1);
}
.hidden { display: none; }

/* Hero Section */
.hero {
    text-align: center;
    padding: 100px 20px 60px;
}
.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    font-weight: 700;
}
.hero h1 span {
    color: var(--primary);
}
.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

/* Radar Button */
.btn-radar {
    position: relative;
    display: inline-block;
    padding: 15px 40px;
    font-size: 1.2rem;
    font-weight: 600;
    color: #fff;
    background: var(--primary);
    border-radius: 50px;
    text-decoration: none;
    z-index: 1;
}
.btn-radar::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: 50px;
    background: var(--primary);
    z-index: -1;
    animation: radar 1.5s infinite;
}
@keyframes radar {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.4); opacity: 0; }
}

/* Services */
.services {
    padding: 60px 0;
}
.services h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 50px;
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.card {
    background: var(--card-bg);
    padding: 40px 20px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
}
.card:hover {
    transform: translateY(-10px);
}
.card h3 {
    margin: 20px 0 15px;
    font-size: 1.5rem;
}
.card p {
    margin-bottom: 25px;
    opacity: 0.8;
    flex-grow: 1;
}
.btn-whatsapp {
    display: inline-block;
    background: var(--whatsapp);
    color: #fff;
    padding: 12px 25px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    width: 100%;
}
.btn-whatsapp:hover {
    background: var(--whatsapp-hover);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}
.modal-content {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 450px;
    position: relative;
    text-align: center;
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}
.close-modal {
    position: absolute;
    top: 15px; right: 20px;
    background: none; border: none;
    font-size: 1.5rem; cursor: pointer;
    color: var(--text-color);
}
.modal-content input {
    width: 100%;
    padding: 15px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background: transparent;
    color: var(--text-color);
    font-size: 1rem;
    outline: none;
}
.input-group {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 8px;
    padding-left: 15px;
}
.input-group input {
    border: none;
    margin-bottom: 0;
}
.flag { font-weight: 600; margin-right: 10px; }
.btn-submit {
    width: 100%;
    padding: 15px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.btn-submit:hover { background: var(--primary-hover); }
.hidden-msg { margin-top: 15px; font-weight: 600; color: var(--whatsapp); }

footer { text-align: center; padding: 30px; opacity: 0.7; }

/* Responsividade */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .btn-radar { font-size: 1rem; padding: 12px 30px; }
    .input-group { flex-direction: column; align-items: flex-start; padding: 10px; }
    .flag { margin-bottom: 5px; }
}