/* Fase 4 — Modo sesión enfocada y overlay de atajos */

.app-toolbar-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.app-brand-bar {
    flex-wrap: wrap;
    gap: 8px;
}

.app-focus-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-main);
    font-size: 0.72rem;
    font-weight: 700;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.app-focus-toggle:hover,
.app-focus-toggle.is-on {
    border-color: var(--accent-color);
    background: color-mix(in srgb, var(--accent-color) 14%, var(--input-bg));
}

.app-focus-toggle i {
    font-size: 0.9rem;
}

.app-shortcuts-open {
    margin-left: 4px;
    padding: 8px 10px;
    border-radius: 12px;
    border: none;
    background: transparent;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 1rem;
}

.app-shortcuts-open:hover {
    color: var(--accent-color);
}

/* —— Modo sesión —— */
body.app-focus-session .onboarding-banner,
body.app-focus-session .practice-dashboard,
body.app-focus-session #zone-source,
body.app-focus-session #zone-session,
body.app-focus-session #zone-tools,
body.app-focus-session .stem-promo-banner:not(.stem-promo-sticky),
body.app-focus-session .shortcuts-hint {
    display: none !important;
}

body.app-focus-session .app-player-zone .gestion-playlist:has(#canvas-wave) {
    display: none;
}

body.app-focus-session .app-scroll {
    padding-bottom: 72px;
}

.focus-session-bar {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 900;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom, 0px));
    background: color-mix(in srgb, var(--bg-color) 92%, transparent);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-color);
    gap: 8px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

body.app-focus-session .focus-session-bar {
    display: flex;
}

.focus-bar-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-main);
    font-size: 0.75rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    font-family: inherit;
}

.focus-bar-btn:hover {
    border-color: var(--accent-color);
}

.focus-bar-btn-stem {
    border-color: #6c5ce7;
    background: color-mix(in srgb, #6c5ce7 18%, var(--input-bg));
}

.focus-bar-btn.is-active {
    border-color: var(--accent-color);
    background: color-mix(in srgb, var(--accent-color) 20%, var(--input-bg));
}

/* —— Overlay atajos —— */
.shortcuts-overlay {
    position: fixed;
    inset: 0;
    z-index: 1200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
}

.shortcuts-overlay.is-hidden {
    display: none;
}

.shortcuts-overlay-panel {
    width: min(480px, 100%);
    max-height: min(85vh, 640px);
    overflow-y: auto;
    border-radius: 18px;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    padding: 20px 18px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.shortcuts-overlay-panel h2 {
    margin: 0 0 4px;
    font-size: 1.15rem;
}

.shortcuts-overlay-hint {
    margin: 0 0 16px;
    font-size: 0.8rem;
    color: var(--text-dim);
}

.shortcuts-grid {
    display: grid;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.shortcuts-grid li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    background: var(--input-bg);
    font-size: 0.85rem;
}

.shortcuts-grid kbd {
    display: inline-block;
    min-width: 2rem;
    padding: 4px 8px;
    border-radius: 8px;
    background: var(--border-color);
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 800;
    text-align: center;
    flex-shrink: 0;
}

.shortcuts-overlay-close {
    margin-top: 16px;
    width: 100%;
}