/* Alphabet Bar Component */
.alphabet-bar-container {
    position: fixed;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    transition: transform 0.3s ease;
}

.alphabet-bar-container.collapsed {
    transform: translateY(-50%) translateX(-90%);
}

/* New visual indicator for when a letter is active and bar is collapsed */
.alphabet-bar-container.collapsed .toggle-alphabet-bar.has-active-letter {
    border-color: var(--lora-accent);
    background: oklch(var(--lora-accent) / 0.15);
}

.alphabet-bar-container.collapsed .toggle-alphabet-bar.has-active-letter::after {
    content: '';
    position: absolute;
    top: 7px;
    right: 7px;
    width: 8px;
    height: 8px;
    background-color: var(--lora-accent);
    border-radius: 50%;
    animation: pulse-active 2s infinite;
}

@keyframes pulse-active {
    0% { transform: scale(0.8); opacity: 0.7; }
    50% { transform: scale(1.1); opacity: 1; }
    100% { transform: scale(0.8); opacity: 0.7; }
}

.alphabet-bar {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0 var(--border-radius-xs) var(--border-radius-xs) 0;
    padding: 8px 4px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
    box-shadow: var(--shadow-side);
    max-height: 80vh;
    overflow-y: auto;
    scrollbar-width: thin;
}

.alphabet-bar::-webkit-scrollbar {
    width: 4px;
}

.alphabet-bar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.toggle-alphabet-bar {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 var(--border-radius-xs) var(--border-radius-xs) 0;
    padding: 8px 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    width: 20px;
    height: 40px;
    align-self: center;
    box-shadow: var(--shadow-side);
}

.toggle-alphabet-bar:hover {
    background: var(--bg-hover);
}

.toggle-alphabet-bar i {
    transition: transform 0.3s ease;
}

.alphabet-bar-container.collapsed .toggle-alphabet-bar i {
    transform: rotate(180deg);
}

.letter-chip {
    padding: 4px 2px;
    border-radius: var(--border-radius-xs);
    background: var(--bg-color);
    color: var(--text-color);
    cursor: pointer;
    min-width: 24px;
    text-align: center;
    font-size: 0.85em;
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.letter-chip:hover {
    background: var(--lora-accent);
    color: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.letter-chip.active {
    background: var(--lora-accent);
    color: white;
    border-color: var(--lora-accent);
}

.letter-chip.disabled {
    opacity: 0.5;
    pointer-events: none;
    cursor: default;
}

/* Hide the count by default, only show in tooltip */
.letter-chip .count {
    display: none;
}

.alphabet-bar-title {
    font-size: 0.75em;
    color: var(--text-color);
    opacity: 0.7;
    margin-bottom: 6px;
    writing-mode: vertical-lr;
    transform: rotate(180deg);
    white-space: nowrap;
}

@media (max-width: 768px) {
    .alphabet-bar-container {
        transform: translateY(-50%) translateX(-90%);
    }
    
    .alphabet-bar-container.active {
        transform: translateY(-50%) translateX(0);
    }
    
    .letter-chip {
        padding: 3px 1px;
        min-width: 20px;
        font-size: 0.75em;
    }
}

/* Keyframe animations for the active letter */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.letter-chip.active {
    animation: pulse 1s ease-in-out 1;
}