/**
 * AI Editor - Mobile Layout
 *
 * Single-panel mode with bottom tab bar at ≤768px.
 * Sidebar and chat become full-width overlays.
 * Editor is the persistent base layer.
 *
 * Panel switching is handled by .mobile-active class
 * toggled via js/mobile.js.
 */

/* ============================================
   BOTTOM TAB BAR (always rendered, hidden on desktop)
   ============================================ */

.mobile-tab-bar {
    display: none;          /* shown via media query below */
}

/* ============================================
   MOBILE BREAKPOINT (≤768px)
   ============================================ */

@media (max-width: 768px) {

    /* ---- Bottom tab bar ---- */

    .mobile-tab-bar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 52px;
        background: var(--bg-tertiary);
        border-top: 1px solid var(--border);
        z-index: 9000;
        justify-content: stretch;
        flex-shrink: 0;
        -webkit-tap-highlight-color: transparent;
    }

    .mobile-tab {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        border: none;
        background: none;
        color: var(--text-muted);
        font-size: 18px;
        padding: 4px 0;
        cursor: pointer;
        position: relative;
        min-height: 44px;       /* touch target */
        font-family: var(--font-sans);
        -webkit-tap-highlight-color: transparent;
        transition: color 0.15s;
    }

    .mobile-tab span {
        font-size: 10px;
        line-height: 1;
    }

    .mobile-tab.active {
        color: var(--accent);
    }

    .mobile-tab.active::after {
        content: '';
        position: absolute;
        top: 0;
        left: 25%;
        right: 25%;
        height: 2px;
        background: var(--accent);
        border-radius: 0 0 2px 2px;
    }

    .mobile-tab .mobile-badge {
        position: absolute;
        top: 4px;
        right: calc(50% - 16px);
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--accent);
        display: none;          /* shown by JS when panel has activity */
    }

    /* ---- Core layout overrides ---- */

    .app-container {
        padding-bottom: 52px;   /* room for tab bar */
    }

    .main-content {
        position: relative;
    }

    /* Sidebar: full-screen overlay, hidden by default */
    .sidebar {
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        width: 100% !important;
        z-index: 100;
        border-right: none;
        display: none;
    }

    .sidebar.mobile-active {
        display: flex;
    }

    /* Override the desktop .hidden toggle on mobile */
    .sidebar.hidden {
        display: none;
    }
    .sidebar.hidden.mobile-active {
        display: flex;
    }

    /* Chat: full-screen overlay, hidden by default */
    .chat-panel {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        width: 100% !important;
        z-index: 100;
        border-left: none;
        display: none;
    }

    .chat-panel.mobile-active {
        display: flex;
    }

    .chat-panel.hidden {
        display: none;
    }
    .chat-panel.hidden.mobile-active {
        display: flex;
    }

    /* Editor panel: always visible as base layer */
    .editor-panel {
        flex: 1;
        min-width: 0;
    }

    /* Hide resize handles */
    .resize-handle {
        display: none !important;
    }

    /* ---- Header simplification ---- */

    .app-header {
        padding: 0 0.5rem;
        gap: 0.25rem;
    }

    .app-header h1 {
        font-size: var(--font-base);
    }

    .app-header .version {
        display: none;
    }

    .header-actions {
        gap: 0.25rem;
    }

    /* Hide non-essential header buttons on mobile */
    #btnErrorLog,
    #btnLLMDebug,
    #btnHelp {
        display: none;
    }

    /* Make remaining header buttons touch-friendly */
    .header-actions .btn {
        min-width: 36px;
        min-height: 36px;
        padding: 0.25rem 0.4rem;
        font-size: var(--font-base);
    }

    /* Hide text on commit/revert buttons, show only icon */
    #btnCommit {
        font-size: 0;
    }
    #btnCommit::before {
        content: '📦';
        font-size: var(--font-base);
    }

    /* Cost tracker: compact */
    .header-cost-tracker {
        font-size: var(--font-xs);
        max-width: 100px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    /* ---- Editor toolbar ---- */

    .editor-tabs-bar {
        flex-wrap: nowrap;
    }

    .editor-toolbar {
        flex-shrink: 0;
    }

    .editor-toolbar .btn-toolbar {
        min-width: 36px;
        min-height: 32px;
        padding: 0.2rem 0.4rem;
        font-size: var(--font-sm);
    }

    /* Tabs scroll horizontally */
    .editor-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;      /* hide scrollbar on mobile */
    }

    .editor-tabs::-webkit-scrollbar {
        display: none;
    }

    .editor-tab {
        min-width: 80px;
        flex-shrink: 0;
        font-size: var(--font-sm);
    }

    /* ---- Chat panel mobile tweaks ---- */

    /* Model selector: stack vertically */
    .chat-header {
        flex-wrap: wrap;
        gap: 0.25rem;
        padding: 0.4rem 0.5rem;
    }

    .chat-header h3 {
        font-size: var(--chat-base);
    }

    .chat-header-actions {
        width: 100%;
        flex-wrap: wrap;
        gap: 0.25rem;
    }

    .model-selector {
        flex-wrap: wrap;
        gap: 0.25rem;
        width: 100%;
    }

    .model-selector select {
        flex: 1;
        min-width: 0;
        font-size: var(--chat-sm);
    }

    /* Chat input: more prominent on mobile */
    .chat-input-wrapper textarea {
        font-size: 16px;        /* prevents iOS zoom on focus */
        min-height: 44px;
    }

    .chat-input-actions button {
        min-width: 40px;
        min-height: 40px;
    }

    /* Issue focus bar: compact */
    .issue-focus-bar {
        font-size: var(--chat-sm);
    }

    .issue-focus-actions {
        flex-wrap: wrap;
        gap: 0.25rem;
    }

    /* ---- Sidebar mobile tweaks ---- */

    .sidebar-header {
        padding: 0.5rem 0.75rem;
    }

    .project-selector select,
    .branch-selector select {
        font-size: var(--font-base);
        min-height: 36px;
    }

    .sidebar-section-bottom .issues-panel,
    .sidebar-section-bottom .prs-panel {
        max-height: 250px;      /* more room in full-width view */
    }

    /* File tree: bigger touch targets */
    .tree-item {
        min-height: 36px;
        padding: 0.4rem 0.25rem 0.4rem 0;
    }

    /* ---- Modals: near full-screen ---- */

    .modal-overlay .modal {
        max-width: 100vw !important;
        max-height: 100vh !important;
        max-height: 100dvh !important;
        width: 100vw !important;
        height: 100vh !important;
        height: 100dvh !important;
        border-radius: 0;
        margin: 0;
    }

    /* Settings modal: full screen */
    #settingsModalInner {
        max-width: 100vw !important;
        width: 100vw !important;
        height: 100vh !important;
        height: 100dvh !important;
        border-radius: 0;
    }

    .settings-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Onboarding: full width */
    .onboard-modal {
        max-width: 100vw !important;
        width: 100vw !important;
        border-radius: 0;
        padding: 1.5rem 1rem;
    }

    /* ---- Status bar ---- */

    .editor-status {
        font-size: var(--font-xs);
        padding: 0 0.5rem;
    }

    /* ---- Quick open ---- */

    .quick-open-panel {
        width: 95vw;
        max-width: 95vw;
    }

    /* ---- Toast: above tab bar ---- */

    .toast-container {
        bottom: 62px;          /* above the 52px tab bar + margin */
    }

    /* ---- Form inputs: prevent iOS zoom ---- */

    input[type="text"],
    input[type="password"],
    input[type="number"],
    input[type="email"],
    input[type="url"],
    textarea,
    select {
        font-size: 16px;       /* ≥16px prevents iOS auto-zoom */
    }

    /* Issue/PR detail modals: full-width on mobile */
    #issueDetailModal .modal-resizable,
    #prDetailModal .modal-resizable {
        width: 95vw !important;
        height: 80vh !important;
        max-width: 95vw;
    }

    .modal-meta-row {
        gap: 0.3rem 0.4rem;
        font-size: var(--font-sm);
    }

    .pr-merge-controls,
    .modal-footer-right {
        flex-wrap: wrap;
    }

    .modal-footer-split {
        flex-direction: column;
        gap: 0.5rem;
    }

    .modal-footer-left,
    .modal-footer-right {
        justify-content: center;
    }
}

/* ============================================
   SMALL PHONE (≤480px) — further tightening
   ============================================ */

@media (max-width: 480px) {

    .app-header h1 {
        font-size: var(--font-sm);
    }

    .mobile-tab span {
        font-size: 9px;
    }

    .onboard-paths {
        gap: 0.35rem;
    }

    .onboard-path {
        padding: 0.5rem 0.75rem;
    }

    .onboard-path-icon {
        font-size: 20px;
    }
}