body {
    background: #f4f7fa;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    color: #1f2937;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #ffffff;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.05);
    padding: 48px 36px;
    max-width: 520px;
    width: 100%;
    box-sizing: border-box;
}

h2 {
    font-size: 26px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 32px;
    color: #111827;
}

input.form-control {
    background-color: #f9fafb;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 15px;
    color: #111827;
    transition: all 0.2s ease;
}

input.form-control::placeholder {
    color: #9ca3af;
}

input.form-control:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    outline: none;
    background-color: #fff;
}

label {
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 4px;
}

.form-check-label {
    font-size: 14px;
    color: #374151;
}

.form-check-input {
    border-radius: 4px;
    border: 1px solid #d1d5db;
    transform: scale(1.05);
}

#password-checklist small {
    font-size: 13px;
    color: #6b7280;
    display: block;
    margin-bottom: 4px;
}

#password-checklist .form-check {
    margin-bottom: 6px;
}

#password-checklist .form-check-label {
    font-size: 13px;
    color: #4b5563;
}

.password-strength.weak {
    color: #ef4444;
}
.password-strength.medium {
    color: #f59e0b;
}
.password-strength.strong {
    color: #10b981;
}

.alert-danger {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 24px;
}

button.btn-primary {
    background-color: #2563eb;
    border: none;
    border-radius: 10px;
    padding: 12px;
    font-weight: 600;
    font-size: 15px;
    color: #fff;
    width: 100%;
    transition: background-color 0.2s;
}

button.btn-primary:hover {
    background-color: #1d4ed8;
}

a {
    color: #2563eb;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

.modal-content {
    border-radius: 16px;
    background-color: #ffffff;
    box-shadow: 0 4px 24px rgba(0,0,0,0.1);
}
.modal-title {
    color: #111827;
}
.modal-body p {
    color: #374151;
}
.modal-footer .btn-success {
    background-color: #10b981;
    border: none;
}
.modal-footer .btn-success:hover {
    background-color: #059669;
}

/* Responsivo */
@media (max-width: 576px) {
    .container {
        padding: 32px 24px;
    }
    h2 {
        font-size: 22px;
    }
}