.neon-form-wrapper {
    --nf-bg: #ffffff;
    --nf-border: #e8e8e8;
    --nf-border-radius: 16px;
    --nf-padding: 32px;
    --nf-primary: #2271b1;
    --nf-primary-light: rgba(34, 113, 177, 0.08);
    --nf-success: #00a32a;
    --nf-error: #d63638;
    --nf-text: #1d2327;
    --nf-text-secondary: #646970;
    --nf-text-muted: #999;
    --nf-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    --nf-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.1);

    background: var(--nf-bg);
    border: 1px solid var(--nf-border);
    border-radius: var(--nf-border-radius);
    padding: var(--nf-padding);
    max-width: 640px;
    margin: 24px auto;
    box-shadow: var(--nf-shadow);
    box-sizing: border-box;
}

.neon-form-title {
    text-align: center;
    margin: 0 0 8px;
    color: var(--nf-text);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.neon-form-description {
    text-align: center;
    color: var(--nf-text-secondary);
    margin: 0 0 28px;
    font-size: 14px;
    line-height: 1.6;
}

.neon-form-fields {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.neon-field {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.neon-field > label {
    font-weight: 600;
    color: var(--nf-text);
    font-size: 14px;
    letter-spacing: 0.2px;
}

.neon-field > label .required {
    color: var(--nf-error);
    margin-left: 2px;
}

.neon-input {
    width: 100%;
    padding: 14px 16px;
    border: 1.5px solid var(--nf-border);
    border-radius: 10px;
    font-size: 15px;
    line-height: 1.5;
    color: var(--nf-text);
    background: #fafbfc;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    box-sizing: border-box;
    will-change: border-color, box-shadow;
}

.neon-input:hover {
    border-color: #d0d0d0;
}

.neon-input:focus {
    outline: none;
    border-color: var(--nf-primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px var(--nf-primary-light);
}

.neon-input::placeholder {
    color: var(--nf-text-muted);
}

.neon-input:disabled {
    background: #f5f5f5;
    cursor: not-allowed;
}

textarea.neon-input {
    min-height: 120px;
    resize: vertical;
}

.neon-input-file {
    width: 100%;
    padding: 16px;
    border: 2px dashed var(--nf-border);
    border-radius: 10px;
    background: #fafbfc;
    cursor: pointer;
    transition: all 0.2s ease;
    box-sizing: border-box;
    text-align: center;
}

.neon-input-file:hover {
    border-color: var(--nf-primary);
    background: var(--nf-primary-light);
}

.neon-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23646970' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.neon-radio-group,
.neon-checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.neon-radio-label,
.neon-checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 12px 16px;
    background: #fafbfc;
    border: 1.5px solid var(--nf-border);
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
    color: var(--nf-text);
    user-select: none;
}

.neon-radio-label:hover,
.neon-checkbox-label:hover {
    border-color: var(--nf-primary);
    background: var(--nf-primary-light);
}

.neon-radio-label:has(input:checked),
.neon-checkbox-label:has(input:checked) {
    border-color: var(--nf-primary);
    background: var(--nf-primary-light);
    color: var(--nf-primary);
}

.neon-radio-label input,
.neon-checkbox-label input {
    width: 18px;
    height: 18px;
    margin: 0;
    cursor: pointer;
    accent-color: var(--nf-primary);
}

.neon-form-footer {
    margin-top: 32px;
    text-align: center;
}

.neon-submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--btn-bg, #667eea);
    color: var(--btn-color, #ffffff);
    border: none;
    padding: 16px 48px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--btn-radius, 50px);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
    will-change: transform;
}

.neon-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(34, 113, 177, 0.4);
}

.neon-submit-btn:active:not(:disabled) {
    transform: translateY(0);
}

.neon-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.neon-submit-btn i {
    font-size: 14px;
}

.neon-form-message {
    margin-top: 20px;
    padding: 16px 20px;
    border-radius: 10px;
    text-align: center;
    font-weight: 500;
    line-height: 1.5;
    display: none;
}

.neon-form-message.show {
    display: block;
    animation: nf-fadeIn 0.3s ease;
}

.neon-form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.neon-form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.neon-form-error {
    color: var(--nf-error);
    padding: 24px;
    text-align: center;
    background: #f8d7da;
    border-radius: 10px;
    margin: 20px 0;
    font-weight: 500;
}

.neon-form-loading {
    opacity: 0.7;
    pointer-events: none;
}

.neon-form-loading .neon-submit-btn {
    position: relative;
}

.neon-form-loading .neon-submit-btn::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: nf-spin 0.8s linear infinite;
}

.neon-column-layout {
    gap: 20px;
}

.neon-heading-field h4 {
    margin: 8px 0;
    color: var(--nf-text);
    font-size: 16px;
    font-weight: 700;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--nf-primary);
}

@keyframes nf-fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes nf-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 768px) {
    .neon-form-wrapper {
        padding: 24px 20px;
        margin: 16px;
        border-radius: 12px;
    }

    .neon-form-title {
        font-size: 20px;
    }

    .neon-form-fields {
        gap: 20px;
    }

    .neon-radio-group,
    .neon-checkbox-group {
        flex-direction: column;
        gap: 10px;
    }

    .neon-radio-label,
    .neon-checkbox-label {
        width: 100%;
        box-sizing: border-box;
    }

    .neon-submit-btn {
        width: 100%;
        padding: 16px 32px;
    }

    .neon-column-layout {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .neon-submit-btn,
    .neon-input,
    .neon-radio-label,
    .neon-checkbox-label {
        transition: none;
        animation: none;
    }
}

@keyframes btn-shine {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

@keyframes btn-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}

@keyframes btn-slide {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.btn-anim-shine {
    background: linear-gradient(90deg, var(--btn-bg, #667eea) 0%, var(--btn-bg, #667eea) 50%, #fff 50%, #fff 100%);
    background-size: 200% 100%;
    animation: btn-shine 2s linear infinite;
    border: none !important;
}

.btn-anim-pulse {
    animation: btn-pulse 1.5s ease-in-out infinite;
}

.btn-anim-gradient {
    background: linear-gradient(135deg, var(--btn-bg, #667eea) 0%, #764ba2 50%, var(--btn-bg, #667eea) 100%);
    background-size: 200% 200%;
    animation: btn-slide 2s ease infinite;
}

.btn-anim-slide {
    position: relative;
    overflow: hidden;
}

.btn-anim-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.btn-anim-slide:hover::before {
    left: 100%;
}

.btn-anim-none {
    animation: none;
}