/* Captcha Styles - Single Row Design */

.captcha-container {
    margin-bottom: 1.25rem;
    padding: 0.875rem 1rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 249, 250, 0.98) 100%);
    border: 2px solid rgba(0, 0, 0, 0.08);
    border-radius: 0.625rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: fadeInUp 0.6s ease-out 0.6s both;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    position: relative;
    overflow: hidden;
}

.captcha-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.captcha-container.valid {
    border-color: var(--success-color);
    background: linear-gradient(135deg, rgba(25, 135, 84, 0.06) 0%, rgba(255, 255, 255, 0.95) 100%);
    box-shadow: 0 2px 8px rgba(25, 135, 84, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.captcha-container.valid::before {
    background: linear-gradient(90deg, var(--success-color) 0%, #20c997 100%);
    opacity: 1;
}

.captcha-container.invalid {
    border-color: var(--danger-color);
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.06) 0%, rgba(255, 255, 255, 0.95) 100%);
    box-shadow: 0 2px 8px rgba(220, 53, 69, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    animation: shake 0.4s ease;
}

.captcha-container.invalid::before {
    background: linear-gradient(90deg, var(--danger-color) 0%, #ff6b6b 100%);
    opacity: 1;
}

.captcha-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.captcha-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-color);
    white-space: nowrap;
    flex-shrink: 0;
}

.captcha-label i {
    color: var(--primary-light);
    font-size: 0.9rem;
}

.captcha-question {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.captcha-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
    height: 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 0.375rem;
    box-shadow: 0 2px 4px rgba(32, 69, 98, 0.2);
    transition: all 0.3s ease;
    padding: 0 0.375rem;
}

.captcha-container.valid .captcha-number {
    background: linear-gradient(135deg, var(--success-color) 0%, #20c997 100%);
    box-shadow: 0 2px 6px rgba(25, 135, 84, 0.25);
    transform: scale(1.05);
}

.captcha-operator,
.captcha-equals {
    font-size: 1.1rem;
    font-weight: 600;
    color: #6c757d;
    min-width: 0.75rem;
    text-align: center;
}

.captcha-input-wrapper {
    flex: 1;
    min-width: 80px;
    max-width: 100px;
    position: relative;
}

.captcha-input-wrapper .form-control {
    text-align: center;
    font-size: 1rem;
    font-weight: 700;
    padding: 0.5rem 0.75rem;
    border: 2px solid #dee2e6;
    border-radius: 0.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: #fff;
    color: var(--dark-color);
    height: 2rem;
}

.captcha-input-wrapper .form-control:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 0.2rem rgba(38, 158, 173, 0.15), 0 2px 4px rgba(38, 158, 173, 0.1);
    transform: translateY(-1px);
    background: #fff;
    outline: none;
}

.captcha-input-wrapper .form-control.valid {
    border-color: var(--success-color);
    background: linear-gradient(135deg, rgba(25, 135, 84, 0.08) 0%, rgba(255, 255, 255, 1) 100%);
    color: var(--success-color);
    box-shadow: 0 2px 6px rgba(25, 135, 84, 0.2);
}

.captcha-input-wrapper .form-control.invalid {
    border-color: var(--danger-color);
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.08) 0%, rgba(255, 255, 255, 1) 100%);
    color: var(--danger-color);
    animation: shake 0.4s ease;
    box-shadow: 0 2px 6px rgba(220, 53, 69, 0.2);
}

.captcha-refresh {
    background: rgba(38, 158, 173, 0.1);
    border: 1px solid rgba(38, 158, 173, 0.2);
    color: var(--primary-light);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
}

.captcha-refresh:hover {
    background: rgba(38, 158, 173, 0.15);
    border-color: var(--primary-light);
    color: var(--primary-color);
    transform: rotate(180deg) scale(1.1);
    box-shadow: 0 2px 6px rgba(38, 158, 173, 0.2);
}

.captcha-refresh:active {
    transform: rotate(180deg) scale(0.95);
}

.captcha-refresh i {
    font-size: 0.875rem;
    transition: transform 0.3s ease;
}

.captcha-status {
    position: absolute;
    bottom: -1.75rem;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    min-height: 1.5rem;
    animation: slideDown 0.3s ease;
    z-index: 10;
}

.captcha-status.success {
    color: var(--success-color);
    background: rgba(25, 135, 84, 0.1);
    border: 1px solid rgba(25, 135, 84, 0.2);
}

.captcha-status.error {
    color: var(--danger-color);
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.2);
}

.captcha-status i {
    font-size: 0.875rem;
}

/* Animations */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-6px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(6px);
    }
}

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

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 576px) {
    .captcha-container {
        padding: 0.75rem;
    }
    
    .captcha-row {
        gap: 0.5rem;
    }
    
    .captcha-label {
        font-size: 0.8rem;
        gap: 0.375rem;
    }
    
    .captcha-label span {
        display: none;
    }
    
    .captcha-number {
        min-width: 1.75rem;
        height: 1.75rem;
        font-size: 1rem;
    }
    
    .captcha-operator,
    .captcha-equals {
        font-size: 1rem;
    }
    
    .captcha-input-wrapper {
        min-width: 70px;
        max-width: 90px;
    }
    
    .captcha-input-wrapper .form-control {
        font-size: 0.95rem;
        padding: 0.45rem 0.625rem;
        height: 1.75rem;
    }
    
    .captcha-refresh {
        width: 1.75rem;
        height: 1.75rem;
        padding: 0.375rem;
    }
    
    .captcha-status {
        bottom: -1.5rem;
        font-size: 0.7rem;
        padding: 0.25rem 0.5rem;
    }
}