.signup-container {
    min-height: calc(100vh - 120px);
    background: linear-gradient(135deg, #f0f4ff, #e6eeff);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px 24px;
    font-family: 'Poppins', sans-serif;
}

.signup-card {
    width: 100%;
    max-width: 400px;
    background: #fff;
    border-radius: 18px;
    padding: 32px 36px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    overflow: hidden;
    margin: auto;
    min-height: 520px;
}

    .signup-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 14px 40px rgba(0,0,0,0.10);
    }

    .signup-card h5 {
        margin: 0 0 6px;
        text-align: center;
        color: #7c3aed;
        font-weight: 600;
        font-size: clamp(1.25rem, 3.2vw, 1.5rem);
    }

    .signup-card p {
        margin: 0 0 20px;
        text-align: center;
        color: #6c757d;
        font-size: clamp(0.85rem, 1.8vw, 0.95rem);
    }

.form-label {
    font-weight: 500;
    color: #333;
    font-size: clamp(0.9rem, 1.6vw, 1rem);
}

.form-control {
    height: 44px;
    border-radius: 10px;
    border: 1px solid #d1d5db;
    padding: 0.5rem 0.75rem;
    font-size: clamp(0.9rem, 1.6vw, 1rem);
}

    .form-control:focus {
        outline: none;
        border-color: #7c3aed;
        box-shadow: 0 0 0 0.12rem rgba(124, 58, 237, 0.12);
    }

.btn-create {
    width: 100%;
    height: 46px;
    border-radius: 10px;
    background: #7c3aed;
    color: #fff;
    border: none;
    font-weight: 600;
    font-size: clamp(0.95rem, 1.8vw, 1rem);
    margin-top: 10px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

    .btn-create:hover {
        background: #6d28d9;
    }

.form-check-label {
    font-size: 0.92rem;
    color: #444;
}

    .form-check-label a {
        color: #7c3aed;
        text-decoration: none;
    }

        .form-check-label a:hover {
            text-decoration: underline;
        }

.bottom-text {
    margin-top: auto;
    text-align: center;
    color: #555;
    font-size: 0.95rem;
}

    .bottom-text a {
        color: #7c3aed;
        text-decoration: none;
        font-weight: 500;
    }

        .bottom-text a:hover {
            text-decoration: underline;
        }

.text-danger {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 5px;
}

.mb-3 {
    margin-bottom: 1rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

@media (max-width: 900px) {
    .signup-card {
        max-width: 360px;
        padding: 28px 26px;
    }
}

@media (max-width: 700px) {
    .signup-container {
        padding: 40px 18px;
    }

    .signup-card {
        max-width: 320px;
        padding: 26px 20px;
        border-radius: 16px;
    }

    .form-control {
        height: 42px;
    }

    .btn-create {
        height: 44px;
    }
}

@media (max-width: 480px) {
    .signup-card {
        max-width: 260px;
        padding: 20px 14px;
        border-radius: 14px;
    }

        .signup-card h5 {
            font-size: 1.2rem;
        }

        .signup-card p {
            margin-bottom: 14px;
            font-size: 0.9rem;
        }

    .form-control {
        height: 40px;
    }

    .btn-create {
        height: 42px;
    }
}

@media (max-width: 360px) {
    .signup-card {
        padding: 16px 12px;
    }

    .form-control {
        height: 38px;
        font-size: 0.95rem;
    }

    .btn-create {
        height: 40px;
    }

    .bottom-text {
        font-size: 0.9rem;
    }
}