/* CAPTCHA Text Styling with Visual Noise */
.captcha-wrapper {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 2px solid var(--primary);
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.captcha-display {
    text-align: center;
    margin-bottom: 15px;
    position: relative;
}

.captcha-text {
    font-family: 'Courier New', monospace;
    font-size: 36px;
    letter-spacing: 12px;
    font-weight: bold;
    background: var(--bg-secondary);
    padding: 15px 25px;
    border-radius: 8px;
    display: inline-block;
    user-select: none;
    position: relative;
    text-shadow: 2px 2px 0px rgba(0, 229, 255, 0.3);
}

/* Visual noise - diagonal lines overlay */
.captcha-text::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 3px,
        rgba(0, 229, 255, 0.1) 3px,
        rgba(0, 229, 255, 0.1) 6px
    );
    border-radius: 8px;
    pointer-events: none;
}

/* Additional noise - random dots */
.captcha-text::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 20% 40%, rgba(255, 45, 117, 0.15) 1px, transparent 1px);
    background-size: 8px 8px;
    border-radius: 8px;
    pointer-events: none;
}

.captcha-input-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.captcha-input-group .form-control {
    flex: 2;
}

.btn-refresh {
    flex: 1;
    min-width: 120px;
    background: var(--gradient);
    padding: 12px 20px;
}

.captcha-hint {
    color: var(--text-light);
    display: block;
    margin-top: 10px;
    text-align: center;
    font-size: 12px;
}

/* Loading state */
.captcha-text.loading {
    opacity: 0.5;
    filter: blur(2px);
}

/* Alert messages */
.alert-message {
    z-index: 10000;
    font-weight: 500;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.alert-success {
    border-left-color: #00e5ff;
}

.alert-error {
    border-left-color: #ff2d75;
}

.alert-info {
    border-left-color: #7b61ff;
}

/* Responsive */
@media (max-width: 768px) {
    .captcha-text {
        font-size: 24px !important;
        letter-spacing: 8px !important;
        padding: 10px 15px !important;
    }
    
    .btn-refresh {
        min-width: 100px !important;
    }
    
    .captcha-input-group {
        flex-direction: column;
    }
}