/* Keyboard Shortcut Help Modal */

.shortcut-help-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: none;
}

.shortcut-help-modal.visible {
    display: flex;
    align-items: center;
    justify-content: center;
}

.shortcut-help-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.shortcut-help-panel {
    position: relative;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    background: var(--surface-1);
    border-radius: 12px;
    box-shadow: var(--shadow-elevation-high);
    display: flex;
    flex-direction: column;
    animation: slideUp 0.2s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.shortcut-help-header {
    padding: 24px 24px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.shortcut-help-header h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.shortcut-help-close {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.2s;
    border-radius: 6px;
}

.shortcut-help-close:hover {
    color: var(--text-primary);
    background: var(--surface-2);
}

.shortcut-help-content {
    padding: 24px;
    overflow-y: auto;
}

.shortcut-category {
    margin-bottom: 32px;
}

.shortcut-category:last-child {
    margin-bottom: 0;
}

.shortcut-category-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin: 0 0 12px 0;
}

.shortcut-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.shortcut-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-radius: 6px;
    transition: background 0.15s;
}

.shortcut-row:hover {
    background: var(--surface-2);
}

.shortcut-description {
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.shortcut-key {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono, monospace);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Dark mode */
[data-theme="dark"] .shortcut-key {
    background: var(--surface-3);
    border-color: var(--border-color-dark);
}

/* =============================================================================
   Keyboard Shortcuts Hint Bar
   ============================================================================= */

.shortcuts-hint {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: none;                        /* hidden by default, shown via .visible */
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--surface-2);
    border-top: 1px solid var(--border-color);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    z-index: 100;
}

.shortcuts-hint.visible {
    display: flex;
    animation: hintSlideUp 0.3s ease-out;
}

.shortcuts-hint.hiding {
    animation: hintSlideDown 0.2s ease-in forwards;
}

@keyframes hintSlideUp {
    from { transform: translateY(100%); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}

@keyframes hintSlideDown {
    from { transform: translateY(0);    opacity: 1; }
    to   { transform: translateY(100%); opacity: 0; }
}

.shortcuts-hint__text {
    display: flex;
    align-items: center;
    gap: 6px;
}

.shortcuts-hint__text kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    background: var(--surface-3, var(--bg-surface));
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono, monospace);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.shortcuts-hint__dismiss {
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-muted);
    border-radius: 4px;
    transition: color 0.15s, background 0.15s;
    line-height: 0;
}

.shortcuts-hint__dismiss:hover {
    color: var(--text-primary);
    background: var(--surface-3, rgba(0, 0, 0, 0.05));
}

/* Hide on mobile -- keyboard shortcuts not relevant on touch devices */
@media (hover: none) and (pointer: coarse) {
    .shortcuts-hint {
        display: none !important;
    }
}

/* Dark mode */
[data-theme="dark"] .shortcuts-hint {
    background: var(--surface-2);
    border-top-color: var(--border-color-dark, var(--border-color));
}

[data-theme="dark"] .shortcuts-hint__text kbd {
    background: var(--surface-3);
    border-color: var(--border-color-dark, var(--border-color));
}

/* Mobile responsive */
@media (max-width: 640px) {
    .shortcut-help-panel {
        width: 100%;
        max-width: none;
        max-height: 100vh;
        border-radius: 0;
    }

    .shortcut-help-header {
        padding: 20px 20px 12px;
    }

    .shortcut-help-content {
        padding: 20px;
    }
}