:root {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --accent: #4361ee;
    --accent-hover: #3a56d4;
    --border: #dee2e6;
    --shadow: rgba(0, 0, 0, 0.1);
    --card-hover: #f1f3f5;
}

.dark-mode {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --text-primary: #f8f9fa;
    --text-secondary: #adb5bd;
    --accent: #5a6ff0;
    --accent-hover: #4d5fd4;
    --border: #343a40;
    --shadow: rgba(0, 0, 0, 0.3);
    --card-hover: #2a2a2a;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

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

header {
    background-color: var(--bg-secondary);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 25px;
}

nav a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 4px;
    transition: all 0.2s;
}

nav a:hover {
    background-color: var(--card-hover);
}

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.cards-section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
    color: var(--text-primary);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.card {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px var(--shadow);
}

.card-img {
    height: 180px;
    background-color: var(--card-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--accent);
}

.card-content {
    padding: 20px;
}

.card-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    padding: 30px;
    position: relative;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.close-modal:hover {
    color: var(--text-primary);
}

.modal-title {
    margin-bottom: 15px;
    color: var(--text-primary);
}

.modal-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 30px 0;
    margin-top: 40px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--accent);
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 992px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    nav ul {
        gap: 15px;
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Modificações: */

form{
    justify-self: center;
    width: 80%;
    display: grid;
    grid-auto-flow: row;
    grid-template-rows: 40px 40px 40px 40px 40px 40px 40px;
}

.form-group{
    font-weight: 600;
    display: grid;
    grid-auto-flow: column;
    grid-template-rows: 60%;
    grid-template-columns: 20% 80%;
}

.form-group:nth-child(7){
    grid-template-columns: 100%;
}

input[type="text"]{
    height: 80%;
    outline: none;
}

.submit{
    font-weight: 600;
    border: transparent;
    border-radius: 5px;
    color: #fff;
    background-color: var(--accent);
    cursor: pointer;
}

.submit:hover{
    background-color: var(--accent-hover);
}