* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #f1f5f9; /* Fundo cinza bem claro, padrão SaaS */
    color: #334155;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

header {
    text-align: center;
    margin-bottom: 35px;
}

h1 {
    font-size: 24px;
    color: #0f172a;
    margin-bottom: 12px;
    font-weight: 700;
}

p {
    font-size: 15px;
    color: #64748b;
    line-height: 1.5;
}

.checklist-box {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 35px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    font-size: 16px;
    font-weight: 500;
    color: #1e293b;
    cursor: pointer;
    padding: 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.2s ease;
    user-select: none;
}

.checkbox-container:hover {
    border-color: #cbd5e1;
    background-color: #f8fafc;
}

.requirement-check {
    width: 22px;
    height: 22px;
    margin-right: 15px;
    accent-color: #10b981; /* Verde conversão */
    cursor: pointer;
}

button {
    width: 100%;
    padding: 18px;
    font-size: 16px;
    font-weight: 700;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-disabled {
    background-color: #e2e8f0;
    color: #94a3b8;
    cursor: not-allowed;
}

.btn-active {
    background-color: #10b981;
    color: #ffffff;
    box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.39);
}

.btn-active:hover {
    background-color: #059669;
    transform: translateY(-2px);
}