* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(180deg, #f4f6f8, #eef2f7);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    color: #111827;
}

/* HEADER */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 40px;
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
}

.logo {
    font-weight: 700;
    font-size: 20px;
    color: #2563eb;
}

nav a {
    text-decoration: none;
    color: #111827;
    margin-left: 24px;
    font-size: 14px;
    transition: 0.3s;
}

nav a:hover {
    color: #2563eb;
}

/* CONTAINER */
.pix-container {
    max-width: 500px;
    margin: 80px auto;
    text-align: center;
    padding: 0 20px;
}

.pix-container h1 {
    font-size: 30px;
    margin-bottom: 10px;
}

.pix-container p {
    color: #6b7280;
    margin-bottom: 40px;
}

/* CARD */
.pix-card {
    background: white;
    padding: 40px;
    border-radius: 18px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.05);
}

.pix-qrcode {
    width: 220px;
    margin-bottom: 30px;
}

.copy-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 14px 20px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
    width: 100%;
}

.copy-btn:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

.status {
    display: block;
    margin-top: 15px;
    font-size: 14px;
}

.footer {
    margin-top: auto;
    padding: 20px;
    text-align: center;
    font-size: 13px;
    color: #6b7280;
}