/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica', 'Arial', sans-serif;
}

/* Corpo da página */
body {
    background-color: #1f1f1f;
    color: #f5f5f5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    scroll-behavior: smooth;
}

/* Header */
header {
    text-align: center;
    padding: 2rem 1rem;
    border-bottom: 1px solid #444;
}

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

header p {
    font-size: 1.2rem;
    color: #ccc;
}

/* Técnicas */
main {
    flex: 1;
    display: grid;
    gap: 2rem;
    padding: 2rem;
    max-width: 900px;
    margin: auto;
}

.technique {
    background-color: #2c2c2c;
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid #444;
    transition: transform 0.2s;
}

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

.technique h2 {
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

/* Navegação */
nav {
    display: flex;
    justify-content: center;
    padding: 1rem;
    gap: 1rem;
    background-color: #2c2c2c;
    border-top: 1px solid #444;
}

nav button {
    background-color: #444;
    border: none;
    color: #f5f5f5;
    padding: 0.7rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
}

nav button:hover {
    background-color: #555;
}