:root {
    --cor-primaria: #0B0B0F;

    --cor-texto: #28292E;
    --cor-fundo: #f8f9fa;
    --cor-cartao: #ffffff;
    --cor-borda: #dee2e6;
    --cor-preta: #222;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    list-style: none;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--cor-fundo);
    color: var(--cor-texto);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

a {
    color: var(--cor-primaria);
    transition: color 0.3s ease;
}

a:hover {
    color: #0056b3;
}

.navbar {
    background-color: var(--cor-cartao);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
    border-bottom: 1px solid var(--cor-borda);
}

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

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

.nav-links {
    list-style: none;
    display: flex;
}

.nav-links li {
    margin-right: 2rem;
}

.nav-links a {
    color: #555;
    font-weight: 600;
}

.nav-links a:hover {
    color: #333;
}

.header {
    background-color: var(--cor-cartao);
    text-align: center;
    padding: 4rem 0;
    border-bottom: 1px solid var(--cor-borda);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.header p {
    font-size: 1.125rem;
    color: #666;
}

.main-content {
    padding: 3rem 0;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.app-card {
    background-color: var(--cor-cartao);
    border: 1px solid var(--cor-borda);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.03);
    display: flex;
    flex-direction: column;
}

.app-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--cor-preta);
}

.app-card p {
    flex-grow: 1;
    color: #555;
    margin-bottom: 1.5rem;
}

.app-button {
    display: block;
    width: 100%;
    text-align: center;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--cor-preta);

    background-color: var(--cor-cartao);
    border: 2px solid var(--cor-preta);
    border-radius: 8px;

    box-shadow: 0 4px 0 var(--cor-preta);

    cursor: pointer;
    transition: all 0.2s ease-out;
}

.app-button:hover {
    transform: scale(1.01);
    transition: ease-in-out .3s;
}

.app-button:active {
    transform: translateY(4px);
    box-shadow: none;
}

.footer {
    text-align: center;
    padding: 2.5rem 0;
    margin-top: 2rem;
    background-color: var(--cor-cartao);
    border-top: 1px solid var(--cor-borda);
    color: #777;
    font-size: 0.875rem;
}

.social-icons {
    margin-bottom: 1rem;
}

.social-icons a {
    margin: 0 0.75rem;
    color: #555;
    font-weight: 600;
}

.social-icons a:hover {
    color: var(--cor-preta);
}