/* ══════════════════════════════════════════════════════
   UNQUIET — Mobile
   Same dark velvet & gem stones, recut for the palm.
   ══════════════════════════════════════════════════════ */


/* ────────────────────────────────────────────────────
   §0  MOBILE BANNER
   ──────────────────────────────────────────────────── */

.mobile-banner {
    display: none;
}

@media (max-width: 768px) {
    .mobile-banner {
        display: block;
        padding: 4px 0;
        background: var(--surface-header);
        border-bottom: 1px solid var(--border-subtle);
        text-align: center;
        font-family: var(--font-mono);
        font-size: 9px;
        letter-spacing: 0.5px;
        text-transform: lowercase;
        color: var(--gem-topaz);
        opacity: 0.7;
    }
}


/* ────────────────────────────────────────────────────
   §1  TOUCH DEVICES  (hover: none)
   Hover-gated UI → always faintly visible.
   ──────────────────────────────────────────────────── */

@media (hover: none) {
    /* Session delete */
    .session-item .delete-btn {
        opacity: 0.3;
    }

    /* Activity delete */
    .activity-delete {
        opacity: 0.3;
    }

    /* Essay chat timestamps (chat.css .message class) */
    .message.user .message-timestamp,
    .message.assistant .message-timestamp {
        opacity: 0.3;
    }

    /* Search chat timestamps (style.css .chat-message class) */
    .chat-message-user .chat-message-time,
    .chat-message-assistant .chat-message-time {
        opacity: 0.3;
    }

    /* Passage preview — don't hide behind hover */
    .chat-passage-cards .passage-text {
        max-height: none;
    }

    /* Reading list arrow */
    .reading-list-item .reading-list-link::after {
        opacity: 0.3;
    }

    /* Chat divider — no col-resize on touch */
    .chat-divider {
        cursor: default;
        pointer-events: none;
        width: 0;
        opacity: 0;
    }
}

/* Mobile-nav-link clones — hidden on desktop */
.mobile-nav-link {
    display: none;
}


/* ────────────────────────────────────────────────────
   §2  TABLET  (≤ 1024px)
   Reading list → slide-over. Tighten spacing.
   ──────────────────────────────────────────────────── */

@media (max-width: 1024px) {
    /*
     * Reading list panel → slide-over.
     *
     * Desktop reading-list.js uses inline style.display to toggle
     * panel/strip visibility. On mobile we override with !important:
     *   - Strip always display:flex (it's the trigger to open)
     *   - Panel always display:flex (hidden off-screen via transform)
     *   - Divider hidden (not used in overlay mode)
     *   - mobile-open class controls slide-in via transform
     */
    .reading-list-strip {
        position: fixed;
        right: 0;
        top: var(--header-height, 49px);
        z-index: 199;
        display: flex !important;
    }

    .reading-list-panel {
        position: fixed;
        right: 0;
        top: var(--header-height, 49px);
        bottom: 0;
        z-index: 200;
        transform: translateX(100%);
        transition: transform 0.3s var(--ease-dramatic);
        box-shadow: var(--shadow-dramatic);
        width: 320px;
        max-width: 85vw;
        display: flex !important;
    }

    .reading-list-panel.mobile-open {
        transform: translateX(0);
    }

    .reading-list-rail-divider {
        display: none !important;
    }

    .reading-list-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        top: var(--header-height, 49px);
        background: rgba(0, 0, 0, 0.5);
        z-index: 198;
    }

    .reading-list-backdrop.visible {
        display: block;
    }

    /* Search bottom bar */
    .search-container.search-results-mode {
        max-width: 600px;
        width: calc(100% - 32px);
    }

    /* Passage — reduce padding */
    .passage-container {
        max-width: 100%;
    }

    .passage-full {
        padding: 24px;
        padding-left: calc(var(--legal-pad-margin) + 12px);
    }

    .tab-content {
        padding: 24px 20px;
    }

    .activity-container {
        padding: 0 16px;
    }

    /* Search chat container */
    .search-chat-container {
        padding: 16px 16px 100px;
    }
}


/* ────────────────────────────────────────────────────
   §3  MOBILE  (≤ 768px)
   Sidebars → overlays. Single-column everywhere.
   ──────────────────────────────────────────────────── */

@media (max-width: 768px) {

    /* ── Session sidebar → overlay ── */

    .search-sidebar {
        transform: translateX(-260px);
        z-index: 300;
        box-shadow: var(--shadow-dramatic);
    }

    .search-sidebar.mobile-open {
        transform: translateX(0);
    }

    /* Override desktop collapsed class */
    .sidebar-collapsed .search-sidebar {
        transform: translateX(-260px);
    }

    .sidebar-collapsed .search-sidebar.mobile-open {
        transform: translateX(0);
    }

    .search-main-layout,
    .sidebar-collapsed .search-main-layout {
        margin-left: 0;
    }

    .sidebar-expand-btn {
        display: flex;
        z-index: 301;
    }

    .sidebar-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        top: var(--header-height, 49px);
        background: rgba(0, 0, 0, 0.5);
        z-index: 299;
    }

    .sidebar-backdrop.visible {
        display: block;
    }


    /* ── Chat sidebar → full-screen ── */

    .page-with-chat {
        flex-direction: column;
    }

    /* Fix virtual keyboard pushing content: use dvh where supported */
    body:has(.page-with-chat),
    body.has-chat-layout {
        height: 100vh;
        height: 100dvh;
    }

    .chat-sidebar {
        position: fixed;
        inset: 0;
        top: var(--header-height, 49px);
        width: 100%;
        max-width: 100%;
        min-width: 0;
        z-index: 400;
        transform: translateX(-100%);
        transition: transform 0.3s var(--ease-dramatic);
    }

    .chat-sidebar.mobile-open {
        transform: translateX(0);
    }

    /* Chat FAB */
    .chat-mobile-toggle {
        position: fixed;
        bottom: 20px;
        left: 16px;
        z-index: 100;
        width: 48px;
        height: 48px;
        border-radius: 50%;
        background: var(--gem-sapphire);
        color: #0D0D0D;
        border: 2px solid rgba(74, 144, 217, 0.3);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--font-mono);
        font-size: 16px;
        font-weight: 700;
        box-shadow: var(--shadow-lift);
        transition: transform 0.15s var(--ease-spring);
    }

    .chat-mobile-toggle:active {
        transform: scale(0.9);
    }

    /* Chat back button */
    .chat-mobile-back {
        display: flex;
        align-items: center;
        gap: 4px;
        background: none;
        border: none;
        color: var(--secondary-text);
        font-family: var(--font-mono);
        font-size: 14px;
        cursor: pointer;
        padding: 8px 12px 8px 8px;
        min-height: 44px;
        transition: color 0.15s;
    }

    .chat-mobile-back:active {
        color: var(--primary-text);
    }

    .content-area {
        width: 100%;
    }

    .content-area .container {
        padding: 24px 16px;
    }


    /* ── Header nav → collapse into hamburger ── */

    .nav {
        gap: 12px;
    }

    .nav > a {
        display: none;
    }

    .user-menu-dropdown {
        min-width: 160px;
    }

    .user-menu-dropdown .mobile-nav-link {
        display: block;
    }


    /* ── Search hero ── */

    .search-container.search-hero-mode {
        padding: 1.5rem 1rem;
        min-height: 70vh;
    }

    .search-container.search-hero-mode .search-form-wrapper {
        max-width: 100%;
    }

    .search-container.search-hero-mode .search-hero-ascii {
        font-size: clamp(16px, 5vw, 30px);
        margin-bottom: 1.5rem;
    }

    /* Assistant revolver — narrower */
    .assistant-revolver {
        width: 80px;
    }

    .assistant-revolver-slot {
        font-size: 11px;
    }

    .search-container.search-hero-mode .search-input,
    .search-container.search-results-mode .search-input {
        padding-left: 5.5rem;
    }

    .search-container.search-results-mode {
        bottom: 12px;
        width: calc(100% - 24px);
        max-width: 100%;
    }

    /* Search chat container */
    .search-chat-container {
        padding: 12px 12px 100px;
        max-width: 100%;
    }

    /* Results list */
    .results-list {
        padding: 0 0.75rem 120px 0.75rem;
        margin: 1.5rem auto;
    }

    .passage-card {
        padding: 16px;
    }

    /* Chat passage cards in results */
    .chat-passage-cards .passage-card {
        padding: 10px 0;
    }

    .chat-message-results .chat-message-content {
        padding: 10px 0 10px 8px;
    }

    .chat-message-assistant .chat-message-content {
        margin-left: 12px;
    }


    /* ── Passage reading — legal pad narrows ── */

    .passage-header {
        padding: 16px 20px;
    }

    .passage-title-text {
        font-size: 20px;
    }

    .breadcrumb-row {
        grid-template-columns: 1fr;
        gap: 12px;
        text-align: center;
    }

    .passage-nav-left,
    .passage-nav-right {
        justify-self: center;
    }

    .passage-full {
        --legal-pad-margin: 28px;
        padding: 20px;
        padding-left: calc(var(--legal-pad-margin) + 12px);
    }

    .passage-content {
        font-size: 14px;
        line-height: 28px;
        background-image: repeating-linear-gradient(
            transparent,
            transparent 27px,
            var(--surface-raised) 27px,
            var(--surface-raised) 28px
        );
    }

    .passage-content p {
        margin-bottom: 28px;
    }

    /* Summary textarea — match narrowed margin */
    .summary-textarea {
        --legal-pad-margin: 28px;
        padding-left: calc(var(--legal-pad-margin) + 8px);
    }

    .summary-popout-modal {
        width: calc(100vw - 24px);
        max-width: none;
        left: 12px;
        right: 12px;
    }

    /* Tab system */
    .tab-content {
        padding: 20px 16px;
        min-height: 200px;
    }

    .tab-btn {
        padding: 10px 12px;
        font-size: 12px;
    }

    /* Score cards */
    .score-card-header {
        padding: 10px 14px;
    }

    .score-badge {
        font-size: 11px;
        padding: 3px 10px;
    }

    .score-card-body {
        padding: 12px 14px;
    }

    .score-reasoning {
        font-size: 12px;
    }

    /* Similar passages */
    .similar-passages-section {
        margin: 32px auto 0;
        padding-top: 24px;
    }


    /* ── Essay page ── */

    .essay-container {
        max-width: 100%;
        padding: 24px 16px 100px;
    }

    .essay-title-input {
        font-size: 18px;
        padding-bottom: 16px;
    }

    .essay-content-textarea {
        min-height: 400px;
        font-size: 13px;
    }

    .essay-status-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 16px;
    }

    .essay-actions {
        flex-direction: column;
        gap: 12px;
        margin-top: 24px;
    }

    .essay-submit-btn {
        width: 100%;
        text-align: center;
        padding: 12px 20px;
    }

    .essay-reading-list-btn {
        text-align: center;
    }

    .essay-secondary-actions {
        flex-direction: column;
        gap: 12px;
        margin-top: 16px;
    }


    /* ── Note editor ── */

    .note-input-container {
        min-height: calc(100vh - 80px);
        min-height: calc(100dvh - 80px);
        padding: 24px 16px;
    }

    .note-input-wrapper {
        gap: 16px;
    }

    .note-greeting {
        margin-bottom: 20px;
    }

    .note-greeting h1 {
        font-size: 24px;
    }

    .note-greeting p {
        font-size: 14px;
    }

    .note-main-input {
        --legal-pad-margin: 28px;
    }

    .note-main-input::before {
        left: var(--legal-pad-margin);
    }

    .note-main-textarea {
        padding-left: calc(28px + 16px);
        font-size: 14px;
    }

    .note-input-controls {
        padding: 12px 16px;
        padding-left: 44px;
    }

    .note-source-input.show {
        min-width: 0;
        width: 100%;
        margin-left: 0;
        margin-top: 8px;
    }

    .note-control-left {
        flex-wrap: wrap;
    }

    .note-secondary-actions {
        flex-wrap: wrap;
        gap: 8px;
    }

    .note-side {
        padding: 0 16px 20px;
    }

    /* Note view */
    .note-content-display {
        --legal-pad-margin: 28px;
        padding-left: calc(28px + 12px);
    }

    .note-content-display::before {
        left: 28px;
    }

    .note-text {
        font-size: 14px;
    }

    .note-view-actions {
        padding: 12px 16px;
    }

    .note-greeting-edit h1 {
        font-size: 22px;
    }

    /* Command results */
    .command-result,
    .command-result.card {
        max-width: 100%;
    }


    /* ── Activity — reflow ── */

    .activity-pad {
        --activity-margin: 0px;
        padding-left: 12px;
    }

    .activity-pad::before {
        display: none;
    }

    .activity-date {
        position: static;
        width: auto;
        text-align: left;
        font-size: 11px;
        opacity: 0.5;
        flex-shrink: 0;
    }

    .activity-line {
        flex-wrap: wrap;
        height: auto;
        line-height: 1.5;
        padding: 8px;
        gap: 6px;
    }

    .activity-action {
        font-size: 12px;
        white-space: normal;
        line-height: 1.5;
    }

    .activity-stats {
        gap: 12px;
    }

    .activity-stat {
        font-size: 12px;
    }

    /* Pagination */
    .pagination-controls {
        flex-wrap: wrap;
        justify-content: center;
    }

    .pagination-controls .btn {
        min-width: 80px;
        padding: 10px 16px;
    }


    /* ── Touch targets — 44px minimum ── */

    .search-submit-btn {
        width: 44px;
        height: 44px;
    }

    .sidebar-collapse-btn {
        width: 44px;
        height: 44px;
    }

    .sidebar-expand-btn {
        width: 36px;
        height: 48px;
    }

    .chat-send-btn {
        width: 44px;
        height: 44px;
    }

    .reading-list-toggle-btn {
        min-width: 44px;
        min-height: 44px;
    }

    .chat-tool-btn {
        min-width: 44px;
        min-height: 44px;
    }

    /* Reading list checkbox — bigger target */
    .reading-list-checkbox {
        width: 22px;
        height: 22px;
    }

    .reading-list-checkbox:checked::after {
        font-size: 16px;
        left: 3px;
        top: -1px;
    }

    /* Reading list pin button */
    #reading-list-rail .reading-list-pin-btn {
        width: 28px;
        height: 28px;
        font-size: 14px;
    }

    .session-item {
        padding: 14px 12px;
    }

    .session-item .delete-btn {
        padding: 8px 10px;
        font-size: 16px;
    }

    /* Score toggle */
    .score-toggle-btn {
        min-width: 44px;
        min-height: 44px;
    }


    /* ── Typography floor — 11px minimum ── */

    .sidebar-section-title {
        font-size: 11px;
    }

    .session-meta {
        font-size: 11px;
    }

    .session-title {
        font-size: 13px;
    }

    .reading-list-title {
        font-size: 11px;
    }

    .chat-metadata {
        font-size: 11px;
    }

    #reading-list-rail .reading-list-section-header {
        font-size: 11px;
    }

    .reading-list-strip-label {
        font-size: 11px;
    }

    .reading-list-type-badge {
        font-size: 11px;
    }

    .reading-list-item {
        padding: 12px 14px;
    }

    .chat-messages {
        -webkit-overflow-scrolling: touch;
    }
}


/* ────────────────────────────────────────────────────
   §4  PHONE  (≤ 480px)
   Maximum density reduction.
   ──────────────────────────────────────────────────── */

@media (max-width: 480px) {
    /* Header */
    .header {
        padding: 8px 0;
    }

    .header-content {
        padding: 0 12px;
    }

    .logo {
        font-size: 15px;
        letter-spacing: 1.5px;
    }

    /* ASCII art */
    .search-container.search-hero-mode .search-hero-ascii {
        font-size: 16px;
        letter-spacing: 0;
        margin-bottom: 1rem;
    }

    /* Assistant revolver — tightest */
    .assistant-revolver {
        width: 56px;
    }

    .assistant-revolver-slot {
        font-size: 9px;
        letter-spacing: 0;
    }

    .search-container.search-hero-mode .search-input,
    .search-container.search-results-mode .search-input {
        padding-left: 4.25rem;
        font-size: 0.875rem;
    }

    .search-container.search-hero-mode .search-input {
        height: 44px;
    }

    /* Bottom search bar — near edge */
    .search-container.search-results-mode {
        bottom: 8px;
        width: calc(100% - 16px);
        border-radius: 4px;
    }

    /* Results */
    .results-list {
        padding: 0 0.5rem 100px 0.5rem;
        margin: 1rem auto;
    }

    .passage-card {
        padding: 14px;
        border-radius: 3px;
    }

    .passage-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 12px;
    }

    /* Passage — tightest legal pad */
    .passage-full {
        --legal-pad-margin: 20px;
        padding: 16px;
        padding-left: calc(var(--legal-pad-margin) + 8px);
    }

    .passage-header {
        padding: 14px 16px;
    }

    .passage-title-text {
        font-size: 18px;
        margin-bottom: var(--space-4);
    }

    .title-sticker {
        padding: 4px 8px;
        font-size: 9px;
    }

    .passage-content {
        font-size: 13.5px;
        line-height: 26px;
        background-image: repeating-linear-gradient(
            transparent,
            transparent 25px,
            var(--surface-raised) 25px,
            var(--surface-raised) 26px
        );
    }

    .passage-content p {
        margin-bottom: 26px;
    }

    /* Summary textarea */
    .summary-textarea {
        --legal-pad-margin: 20px;
        min-height: 200px;
        font-size: 13px;
    }

    .summary-actions {
        flex-direction: column;
        gap: 12px;
    }

    .save-btn,
    .score-btn {
        width: 100%;
        text-align: center;
        margin-left: 0;
    }

    /* Tab buttons — scrollable */
    .tab-header {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .tab-header::-webkit-scrollbar {
        display: none;
    }

    .tab-btn {
        white-space: nowrap;
        flex-shrink: 0;
        padding: 10px 14px;
    }

    .tab-content {
        padding: 16px 12px;
        min-height: 150px;
    }

    /* Score cards */
    .understanding-badge {
        font-size: 11px;
        padding: 6px 10px;
    }

    /* Chat — tighter */
    .chat-input {
        font-size: 14px;
        min-height: 48px;
    }

    .message-content {
        font-size: 13px;
    }

    .message.assistant .message-content {
        margin-left: 12px;
        padding: 10px 12px;
    }

    .chat-header {
        flex-wrap: wrap;
        gap: 8px;
    }

    .chat-metadata {
        flex-wrap: wrap;
        gap: 6px;
    }

    /* Essay — phone tightest */
    .essay-container {
        padding: 16px 12px 80px;
    }

    .essay-title-input {
        font-size: 16px;
    }

    .essay-content-textarea {
        min-height: 300px;
        font-size: 13px;
        line-height: 28px;
        background: repeating-linear-gradient(
            transparent,
            transparent 27px,
            var(--border-color-light) 27px,
            var(--border-color-light) 28px
        );
    }

    /* Note input — tightest */
    .note-main-input {
        --legal-pad-margin: 20px;
    }

    .note-main-textarea {
        padding: 16px;
        padding-left: calc(20px + 12px);
        font-size: 14px;
    }

    .note-content-display {
        --legal-pad-margin: 20px;
        padding: 16px;
        padding-left: calc(20px + 12px);
    }

    .note-content-display::before {
        left: 20px;
    }

    .note-greeting h1 {
        font-size: 20px;
    }

    .note-input-controls {
        padding: 10px 12px;
        padding-left: 32px;
        flex-wrap: wrap;
        gap: 8px;
    }

    /* Activity */
    .activity-title {
        font-size: 14px;
        margin-bottom: 20px;
    }

    .activity-stats {
        gap: 8px;
        flex-direction: column;
    }

    .activity-line {
        gap: 4px;
    }

    .activity-action {
        font-size: 12px;
    }

    /* Search history */
    .search-query-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .search-query-meta {
        width: 100%;
        justify-content: space-between;
    }

    /* Tips */
    .tips-examples li {
        font-size: 0.75rem;
        padding-left: 1rem;
    }

    .tips-header {
        font-size: 0.75rem;
    }

    /* Passage actions — stack */
    .passage-actions {
        flex-direction: column;
        gap: 8px;
    }

    .passage-actions .btn {
        width: 100%;
        text-align: center;
    }

    .passage-navigation {
        font-size: 11px;
    }

    .nav-link {
        padding: 8px 12px;
    }

    /* Pagination */
    .pagination {
        margin-top: 24px;
        padding-top: 16px;
    }

    .pagination-pages {
        font-size: 12px;
    }

    /* No results */
    .no-results {
        padding: 32px 16px;
        margin: 16px 8px;
    }

    /* Note actions */
    .note-actions {
        flex-wrap: wrap;
        gap: 8px;
    }

    .btn-primary, .btn-secondary, .btn-danger {
        padding: 10px 16px;
        font-size: 12px;
    }
}


/* ────────────────────────────────────────────────────
   §5  iOS SAFE AREAS
   ──────────────────────────────────────────────────── */

@supports (padding-bottom: env(safe-area-inset-bottom)) {
    @media (max-width: 768px) {
        .search-container.search-results-mode {
            bottom: calc(12px + env(safe-area-inset-bottom));
        }

        .chat-input-container {
            padding-bottom: calc(8px + env(safe-area-inset-bottom));
        }

        .chat-mobile-toggle {
            bottom: calc(20px + env(safe-area-inset-bottom));
        }

        .essay-container {
            padding-bottom: calc(100px + env(safe-area-inset-bottom));
        }
    }
}


/* ────────────────────────────────────────────────────
   §6  REDUCED MOTION
   ──────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    .search-sidebar,
    .chat-sidebar,
    .reading-list-panel,
    .chat-mobile-toggle {
        transition: none;
    }
}