/* Chain Reaction Styles */

.game-header {
    text-align: center;
    margin-bottom: 1rem;
}

.game-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.game-header .subtitle {
    color: var(--color-text-sub);
}

.word-targets {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.start-word, .end-word {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.start-word .label, .end-word .label {
    font-size: 0.8rem;
    color: var(--color-text-sub);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.start-word .word {
    padding: 16px 24px;
    background: rgba(16, 185, 129, 0.2);
    border: 2px solid var(--color-secondary);
    border-radius: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.end-word .word {
    padding: 16px 24px;
    background: rgba(139, 92, 246, 0.2);
    border: 2px solid var(--color-primary);
    border-radius: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.chain-arrow {
    font-size: 1.5rem;
    color: var(--color-text-sub);
}

.chain-display {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 60px;
    margin: 2rem 0;
    padding: 1rem;
    background: var(--color-surface);
    border-radius: 12px;
}

.chain-link {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chain-link .word {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid var(--color-border);
    border-radius: 20px;
    font-size: 1rem;
    color: var(--color-text-main);
}

.chain-link .word.valid {
    border-color: var(--color-secondary);
    background: rgba(16, 185, 129, 0.1);
}

.chain-link .word.target-reached {
    border-color: var(--color-primary);
    background: rgba(139, 92, 246, 0.2);
    animation: pulse 0.5s ease;
}

.chain-link .arrow {
    color: var(--color-text-sub);
}

.input-area {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 1rem;
}

.input-area input {
    flex: 1;
    max-width: 250px;
    padding: 12px 16px;
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-surface);
    color: var(--color-text-main);
}

.input-area input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.controls {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 1rem;
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: rgba(187, 134, 252, 0.1);
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.feedback {
    text-align: center;
    padding: 12px;
    border-radius: 8px;
    margin-top: 1rem;
}

.feedback.success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-secondary);
}

.feedback.error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-accent);
}

.feedback.hidden {
    display: none;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@media (max-width: 480px) {
    .word-targets {
        flex-direction: column;
        gap: 1rem;
    }

    .chain-arrow {
        transform: rotate(90deg);
    }
}