/* ═══════════════════════════════════════════
   Tutorial, manifest preview, briefing, share, confirm dialog, system nav
   ═══════════════════════════════════════════ */

  /* ===== TUTORIAL OVERLAY ===== */
  #tutorial-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 600;
    background: rgba(0, 0, 0, 0.88);
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  #tutorial-overlay.active {
    display: flex;
    opacity: 1;
  }
  .tutorial-card {
    background: var(--bg2);
    border: 1px solid var(--accent);
    border-radius: 6px;
    box-shadow: 0 0 40px rgba(255, 179, 0, 0.1), inset 0 0 60px rgba(0, 0, 0, 0.5);
    width: 92%;
    max-width: 380px;
    padding: 20px 16px;
    transform: scale(0.85);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s ease;
  }
  #tutorial-overlay.active .tutorial-card {
    transform: scale(1);
    opacity: 1;
  }
  .tutorial-msg {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--white);
    line-height: 1.6;
    margin-bottom: 16px;
  }
  .tutorial-btn {
    display: block;
    width: 100%;
    padding: 10px;
    border: 1px solid var(--accent);
    background: transparent;
    color: var(--accent);
    font-family: 'Orbitron', monospace;
    font-size: 11px;
    letter-spacing: 2px;
    cursor: pointer;
    text-align: center;
  }
  .tutorial-btn:active {
    background: var(--accent-glow);
  }
  .tutorial-skip {
    display: block;
    margin-top: 8px;
    padding: 6px;
    border: none;
    background: transparent;
    color: var(--dim);
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
    cursor: pointer;
    text-align: center;
    letter-spacing: 1px;
  }
  .tutorial-highlight {
    animation: tutorialPulse 1.5s ease-in-out infinite;
  }
  @keyframes tutorialPulse {
    0%, 100% { box-shadow: 0 0 0 2px var(--accent); }
    50% { box-shadow: 0 0 12px 2px var(--accent); }
  }
  .tutorial-tip {
    background: rgba(255, 179, 0, 0.06);
    border: 1px solid var(--accent);
    border-radius: var(--r-xs);
    padding: 10px 12px;
    margin: 8px 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--white);
    line-height: 1.5;
  }

  /* ===== MANIFEST PREVIEW OVERLAY ===== */
  #manifest-preview-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 500;
    background: rgba(0, 0, 0, 0.88);
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  #manifest-preview-overlay.active {
    opacity: 1;
  }
  .manifest-preview-card {
    background: var(--glass-bg-heavy);
    border: 1px solid rgba(255,179,0,0.25);
    border-radius: 6px;
    box-shadow: 0 0 20px rgba(255, 179, 0, 0.06), 0 8px 32px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.04), inset 0 0 40px rgba(0, 0, 0, 0.3);
    width: 92%;
    max-width: 380px;
    transform: scale(0.85);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s ease;
    overflow: hidden;
  }
  #manifest-preview-overlay.active .manifest-preview-card {
    transform: scale(1);
    opacity: 1;
  }
  .preview-header {
    padding: 12px 14px 10px;
    border-bottom: 1px solid var(--grid);
  }
  .preview-signal-line {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
  }
  .preview-signal-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
  }
  .preview-family {
    font-family: 'Orbitron', monospace;
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.8;
  }
  .preview-title {
    font-family: 'Orbitron', monospace;
    font-size: 10px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 1px;
    margin-bottom: 4px;
    line-height: 1.3;
  }
  .preview-event-name {
    font-family: 'Share Tech Mono', monospace;
    font-size: 9px;
    color: var(--accent);
    margin-bottom: 4px;
    letter-spacing: 0.5px;
  }
  .preview-desc {
    font-size: 9px;
    color: var(--dim);
    line-height: 1.5;
  }
  .preview-stakes { padding: 8px 14px; }
  .preview-stake {
    font-size: 10px; line-height: 1.6; padding: 6px 10px; border-radius: var(--r-xs); margin-bottom: 4px;
  }
  .preview-stake strong { color: var(--white); }
  .preview-stake-icon { margin-right: 4px; }
  .preview-stake-rescue {
    background: rgba(0,255,136,0.06); border: 1px solid rgba(0,255,136,0.15); color: var(--green);
  }
  .preview-stake-danger {
    background: rgba(255,0,60,0.06); border: 1px solid rgba(255,0,60,0.2); color: var(--red);
  }
  .preview-actions {
    display: flex;
  }
  .preview-btn {
    flex: 1;
    padding: 10px;
    background: transparent !important;
    border: none !important;
    border-top: 1px solid var(--grid) !important;
    cursor: pointer;
    font-family: 'Orbitron', monospace;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    transition: background var(--dur-fast);
    box-shadow: none !important;
    text-shadow: none !important;
  }
  .preview-btn-deny {
    color: var(--red);
    border-right: 1px solid var(--grid) !important;
  }
  .preview-btn-deny:active { background: rgba(255, 0, 60, 0.1) !important; }
  .preview-btn-accept {
    color: var(--accent);
    border-left: 1px solid var(--grid) !important;
  }
  .preview-btn-accept:active { background: rgba(255, 179, 0, 0.08) !important; }
  .preview-btn-timer { color: var(--dim); font-size: 8px; letter-spacing: 1px; border-left: 1px solid var(--grid) !important; border-right: 1px solid var(--grid) !important; }
  .preview-btn-timer.timer-active { color: var(--accent); }
  .preview-btn-timer:active { background: rgba(255, 179, 0, 0.06) !important; }

  /* ===== CAPTAIN'S BRIEFING OVERLAY ===== */
  #briefing-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 550;
    background: rgba(0, 0, 0, 0.92);
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 16px 12px env(safe-area-inset-bottom, 16px);
  }
  #briefing-overlay.active { opacity: 1; }
  .briefing-card {
    background: var(--glass-bg-heavy);
    border: 1px solid rgba(255,179,0,0.2);
    border-radius: 6px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 0 20px rgba(255,179,0,0.06), 0 8px 32px rgba(0,0,0,0.5);
    width: 94%; max-width: 400px;
    transform: translateY(12px);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.25s ease;
    padding: 0 0 16px;
  }
  #briefing-overlay.active .briefing-card { transform: translateY(0); opacity: 1; }
  .briefing-header {
    text-align: center; padding: 18px 16px 12px;
    border-bottom: 1px solid var(--grid);
  }
  .briefing-title {
    font-family: 'Orbitron', monospace; font-size: 13px;
    letter-spacing: 3px; color: var(--accent);
  }
  .briefing-subtitle {
    font-family: 'JetBrains Mono', monospace; font-size: 9px;
    letter-spacing: 2px; color: var(--dim); margin-top: 4px;
  }
  .briefing-section {
    padding: 12px 16px 8px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
  }
  .briefing-section:last-of-type { border-bottom: none; }
  .briefing-section-title {
    font-family: 'Orbitron', monospace; font-size: 8px;
    letter-spacing: 2px; color: var(--accent); margin-bottom: 8px;
    opacity: 0.8;
  }
  .briefing-stat { margin-bottom: 8px; }
  .briefing-stat-label {
    font-family: 'JetBrains Mono', monospace; font-size: 9px;
    letter-spacing: 1px; color: var(--dim);
  }
  .briefing-stat-value {
    font-family: 'JetBrains Mono', monospace; font-size: 12px;
    color: var(--white); margin-top: 2px;
  }
  .briefing-bar-track {
    height: 4px; background: rgba(255,255,255,0.06); border-radius: 2px;
    margin-top: 4px; overflow: hidden;
  }
  .briefing-bar-fill {
    height: 100%; background: var(--accent); border-radius: 2px;
    transition: width 0.4s ease;
    box-shadow: 0 0 6px rgba(255,179,0,0.3);
  }
  .briefing-stat-row {
    display: flex; gap: 16px; margin-top: 4px;
  }
  .briefing-stat-inline {
    display: flex; flex-direction: column; flex: 1;
  }
  .briefing-goal {
    display: flex; align-items: center; gap: 8px;
    padding: 6px 0;
    font-family: 'JetBrains Mono', monospace; font-size: 11px;
    color: var(--white);
  }
  .briefing-goal-done { opacity: 0.5; }
  .briefing-goal-done .briefing-goal-label { text-decoration: line-through; }
  .briefing-goal-check {
    font-size: 13px; width: 18px; text-align: center;
    color: var(--dim);
  }
  .briefing-goal-done .briefing-goal-check { color: var(--green); }
  .briefing-goals-complete {
    text-align: center; font-family: 'JetBrains Mono', monospace;
    font-size: 10px; color: var(--green); letter-spacing: 1px;
    margin-top: 6px; padding: 4px 0;
  }
  .briefing-streak {
    display: flex; align-items: baseline; gap: 6px;
    flex-wrap: wrap;
  }
  .briefing-streak-count {
    font-family: 'Orbitron', monospace; font-size: 22px;
    color: var(--amber); line-height: 1;
  }
  .briefing-streak-label {
    font-family: 'JetBrains Mono', monospace; font-size: 10px;
    color: var(--dim); letter-spacing: 1px;
  }
  .briefing-streak-tally {
    font-family: 'JetBrains Mono', monospace; font-size: 14px;
    color: var(--amber); letter-spacing: 2px; opacity: 0.6;
    width: 100%; margin-top: 2px;
  }
  .briefing-log-entry {
    font-family: 'JetBrains Mono', monospace; font-size: 10px;
    color: var(--dim); padding: 4px 0 4px 8px;
    border-left: 2px solid var(--grid); margin-bottom: 4px;
    line-height: 1.4;
  }
  .briefing-dismiss {
    display: block; width: calc(100% - 32px); margin: 12px auto 0;
    padding: 10px 16px;
    font-family: 'Orbitron', monospace; font-size: 11px;
    letter-spacing: 2px; color: var(--accent);
    background: transparent !important;
    border: 1px solid rgba(255,179,0,0.3) !important;
    border-radius: 3px; cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
  }
  .briefing-dismiss:active {
    background: rgba(255,179,0,0.1) !important;
    border-color: var(--accent) !important;
  }

  /* ===== AUDIO SETTINGS MODAL ===== */
  #audio-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 525;
    background: rgba(0, 0, 0, 0.92);
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  #audio-modal.active { display: flex; opacity: 1; }
  .audio-card {
    background: var(--glass-bg-heavy);
    border: 1px solid rgba(255,179,0,0.2);
    border-radius: 6px;
    box-shadow: 0 0 20px rgba(255,179,0,0.06), 0 8px 32px rgba(0,0,0,0.5);
    width: 88%; max-width: 340px;
    padding: 20px 20px 16px;
    transform: scale(0.9);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s ease;
  }
  #audio-modal.active .audio-card { transform: scale(1); opacity: 1; }
  .audio-title {
    text-align: center;
    font-family: 'Orbitron', monospace; font-size: 11px;
    letter-spacing: 3px; color: var(--accent);
    margin-bottom: 20px;
  }
  .audio-channel {
    margin-bottom: 18px;
  }
  .audio-channel-label {
    font-family: 'JetBrains Mono', monospace; font-size: 9px;
    letter-spacing: 2px; color: var(--dim); margin-bottom: 8px;
  }
  .audio-stepper {
    display: flex; align-items: center; justify-content: center; gap: 0;
  }
  .audio-step-btn {
    width: 52px; height: 48px;
    background: rgba(255,255,255,0.04) !important;
    border: 1px solid rgba(255,179,0,0.2) !important;
    color: var(--accent);
    font-family: 'Orbitron', monospace; font-size: 20px;
    cursor: pointer;
    transition: background 0.1s;
    display: flex; align-items: center; justify-content: center;
  }
  .audio-step-btn:first-child { border-radius: 4px 0 0 4px; }
  .audio-step-btn:last-child { border-radius: 0 4px 4px 0; }
  .audio-step-btn:active {
    background: rgba(255,179,0,0.15) !important;
  }
  .audio-step-btn[disabled] {
    opacity: 0.25; cursor: default;
  }
  .audio-step-value {
    flex: 1; text-align: center;
    font-family: 'Orbitron', monospace; font-size: 18px;
    color: var(--white); letter-spacing: 1px;
    border-top: 1px solid rgba(255,179,0,0.2);
    border-bottom: 1px solid rgba(255,179,0,0.2);
    height: 48px;
    display: flex; align-items: center; justify-content: center;
    min-width: 80px;
  }
  .audio-step-value.audio-muted { color: var(--dim); }
  .audio-haptic-row {
    display: flex; gap: 8px; margin-top: 4px;
  }
  .audio-haptic-btn {
    flex: 1; padding: 10px 0;
    font-family: 'JetBrains Mono', monospace; font-size: 11px;
    letter-spacing: 1px; text-align: center;
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    border-radius: 3px; cursor: pointer;
    color: var(--dim);
    transition: all 0.15s;
  }
  .audio-haptic-btn.audio-haptic-active {
    color: var(--accent);
    border-color: rgba(255,179,0,0.3) !important;
    background: rgba(255,179,0,0.06) !important;
  }
  .audio-dismiss {
    display: block; width: 100%; margin-top: 20px;
    padding: 10px 16px;
    font-family: 'Orbitron', monospace; font-size: 10px;
    letter-spacing: 2px; color: var(--accent);
    background: transparent !important;
    border: 1px solid rgba(255,179,0,0.3) !important;
    border-radius: 3px; cursor: pointer;
    transition: background 0.15s;
  }
  .audio-dismiss:active {
    background: rgba(255,179,0,0.1) !important;
  }

  /* ===== SHARE OVERLAY ===== */
  .share-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
  }
  .share-menu {
    background: var(--bg2);
    border: 1px solid var(--amber);
    padding: 24px;
    max-width: 340px;
    width: 90%;
    text-align: center;
  }
  .share-menu-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    color: var(--amber);
    letter-spacing: 2px;
    margin-bottom: 8px;
  }
  .share-menu-subtitle {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--white);
    margin-bottom: 20px;
    opacity: 0.7;
  }
  .share-menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
  }
  .share-platform-btn {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: 1px;
    padding: 10px 16px;
    border: 1px solid var(--bg2);
    background: transparent;
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: border-color var(--dur-fast), background 0.2s;
  }
  .share-platform-btn:hover { background: var(--bg2); }
  .share-copy { border-color: var(--amber); color: var(--amber); }
  .share-download { border-color: var(--green); color: var(--green); }
  .share-preview-img {
    width: 100%;
    border: 1px solid var(--bg2);
    margin-bottom: 16px;
  }
  .share-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
  }
  .share-close-btn {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 2px;
    padding: 8px 20px;
    border: 1px solid var(--dim);
    background: transparent;
    color: var(--dim);
    cursor: pointer;
  }

  /* ===== CONFIRM DIALOG ===== */
  .confirm-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    color: var(--red);
    letter-spacing: 2px;
    margin-bottom: 12px;
  }
  .confirm-message {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--dim);
    line-height: 1.6;
    margin-bottom: 20px;
  }
  .confirm-buttons {
    display: flex;
    gap: 10px;
  }
  .confirm-btn {
    flex: 1;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 2px;
    padding: 12px;
    border: 1px solid !important;
    border-radius: var(--r-sm) !important;
    background: transparent !important;
    box-shadow: none !important;
    text-shadow: none !important;
    cursor: pointer;
    min-height: var(--touch-min);
    transition: all var(--dur-fast) var(--ease-out);
  }
  .confirm-yes {
    color: var(--accent) !important;
    border-color: var(--accent) !important;
  }
  .confirm-yes:hover {
    background: rgba(255,179,0,0.1) !important;
  }
  .confirm-no {
    color: var(--dim) !important;
    border-color: var(--dim) !important;
  }
  .confirm-no:hover {
    background: var(--bg2) !important;
  }

  /* ===== SYSTEM NAV ARROWS (inline header) ===== */
  .sys-nav-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
    touch-action: manipulation;
  }
  .sys-nav-sq {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg2);
    border: 1px solid var(--grid);
    color: var(--accent);
    font-size: 14px;
    cursor: pointer;
    touch-action: manipulation;
  }
  .sys-nav-sq:active {
    background: var(--accent);
    color: var(--bg);
  }
  .sys-nav-sq.disabled {
    opacity: 0.15;
    pointer-events: none;
  }
  .sys-nav-pos {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    color: var(--dim);
    letter-spacing: 2px;
  }