/* =========================================================
   KNOWLEDGE — ported 1:1 from "AVA Knowledge.dc.html" (+ mobile).
   The cards/rows are built with the prototype's inline styles in the
   markup; this file holds the shell, the prototype <style> hover helpers,
   the mobile app bar, the loading overlay and the progress bar.
   ========================================================= */

/* ===== Shell (page is the single scroll area, 1200px centred column inline) ===== */
.knowledge-page { height: 100%; overflow-y: auto; background: var(--ava-navy); }
.knowledge-shell,
.knowledge-content { display: block; }
.ku-wrapper { display: block; }

/* ===== Cards ===== */
.ku-card {
    border: 1px solid rgba(var(--ava-rgb-slate),0.10);
    border-radius: 16px;
    background: var(--ava-card);
    box-shadow: 0 14px 32px -16px rgba(var(--ava-rgb-black),0.55);
    overflow: hidden;
}

/* Card title (hover the title itself for any explanatory tooltip). */
.ku-cardtitle { display: flex; align-items: center; gap: 8px; font: 700 15px Inter; color: var(--ava-slate-100); }

/* ===== Master–detail (sources sidebar + content pane) ===== */
.ku-md {
    display: grid;
    grid-template-columns: 300px 1fr;
    border: 1px solid rgba(var(--ava-rgb-slate),0.10);
    border-radius: 16px;
    background: var(--ava-card);
    box-shadow: 0 14px 32px -16px rgba(var(--ava-rgb-black),0.55);
    overflow: hidden;
    min-height: 440px;
}

.ku-sources {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 14px;
    border-right: 1px solid rgba(var(--ava-rgb-slate),0.10);
    max-height: 640px;
    overflow-y: auto;
}
.ku-sources-head { padding: 4px 6px 8px; font: 600 10.5px Inter; letter-spacing: .6px; text-transform: uppercase; color: var(--ava-slate-700); }

.ku-src {
    display: flex;
    align-items: center;
    gap: 11px;
    width: 100%;
    text-align: left;
    padding: 10px 11px;
    border-radius: 12px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--ava-slate-100);
    cursor: pointer;
    transition: background .15s;
}
.ku-src:hover { background: rgba(var(--ava-rgb-white),0.04); }
.ku-src.is-on { background: rgba(var(--ava-rgb-slate),0.16); box-shadow: 0 0 0 1px rgba(var(--ava-rgb-slate),0.20) inset; }
.ku-src:disabled { cursor: default; }
.ku-src-ic { flex: 0 0 auto; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: rgba(var(--ava-rgb-slate),0.08); border: 1px solid rgba(var(--ava-rgb-slate),0.16); color: var(--ava-slate-500); font: 700 13px Inter; }
.ku-src-body { flex: 1; min-width: 0; }
.ku-src-name { display: block; font: 600 14px Inter; color: var(--ava-slate-100); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ku-src-sub { display: block; font: 400 12px Inter; color: var(--ava-slate-700); margin-top: 1px; }

.ku-src-row { display: flex; align-items: center; gap: 6px; }
.ku-src-row .ku-src { flex: 1; min-width: 0; }
.ku-src-del { flex: 0 0 auto; width: 32px; height: 32px; border-radius: 9px; border: 1px solid rgba(var(--ava-rgb-slate),0.18); background: transparent; color: var(--ava-slate-500); cursor: pointer; display: grid; place-items: center; opacity: 0; transition: opacity .15s, color .15s, border-color .15s; }
.ku-src-row:hover .ku-src-del { opacity: 1; }
.ku-src-del:hover { color: var(--ava-danger-text); border-color: rgba(var(--ava-rgb-brick),0.4); }
.ku-src-del:disabled { cursor: default; }

.ku-src-add { display: flex; gap: 8px; margin-top: 8px; }
.ku-src-add input { flex: 1; min-width: 0; background: var(--ava-navy); border: 1px solid rgba(var(--ava-rgb-slate),0.20); border-radius: 10px; color: var(--ava-slate-100); font: 500 13.5px Inter; padding: 9px 11px; outline: none; }
.ku-src-add input:focus { border-color: rgba(var(--ava-rgb-aqua),0.5); box-shadow: 0 0 0 3px rgba(var(--ava-rgb-aqua),0.13); }
.ku-src-add button { flex: 0 0 auto; width: 40px; border-radius: 10px; border: 1px solid rgba(var(--ava-rgb-slate),0.22); background: rgba(var(--ava-rgb-slate),0.08); color: var(--ava-slate-100); font: 700 18px Inter; cursor: pointer; }
.ku-src-add button:hover { background: rgba(var(--ava-rgb-slate),0.14); }

.ku-detail { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.ku-detail-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 18px; border-bottom: 1px solid rgba(var(--ava-rgb-slate),0.10); flex-wrap: wrap; }
.ku-detail-title { font: 700 15px Inter; color: var(--ava-slate-100); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.ku-detail-actions { display: flex; align-items: center; gap: 8px; flex: 0 1 auto; flex-wrap: wrap; }
.ku-detail-btn { border: 1px solid rgba(var(--ava-rgb-slate),0.20); border-radius: 9px; background: transparent; color: var(--ava-slate-500); font: 600 12px Inter; padding: 7px 11px; cursor: pointer; transition: background .15s, color .15s, border-color .15s; }
.ku-detail-btn:hover { background: rgba(var(--ava-rgb-slate),0.08); color: var(--ava-slate-100); }
.ku-detail-btn.is-danger { border-color: rgba(var(--ava-rgb-brick),0.34); color: var(--ava-danger-text); }
.ku-detail-btn.is-danger:hover { background: rgba(var(--ava-rgb-brick),0.12); color: var(--ava-danger-text); }
.ku-detail-btn:disabled { opacity: .5; cursor: default; }
.ku-detail-body { padding: 16px 18px; overflow-y: auto; display: flex; align-items: flex-start; gap: 16px; }

/* Left: the persisted (already uploaded) files. Right: files staged for upload, which only join the
   list on the left once the upload succeeds. */
.ku-detail-list { flex: 1 1 auto; min-width: 0; }
.ku-staging {
    flex: 0 0 300px;
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 14px;
    border-radius: 12px;
    background: rgba(var(--ava-rgb-white),0.02);
    border: 1px solid rgba(var(--ava-rgb-slate),0.14);
}
.ku-staging-head { font: 700 12.5px Inter; color: var(--ava-slate-500); }
.ku-staging-list { display: flex; flex-direction: column; gap: 8px; }

/* Compact upload control (header, or the user tab's sidebar) — click to pick, drop to add. */
.ku-upload-btn { display: inline-flex; align-items: center; gap: 7px; border: 1px solid rgba(var(--ava-rgb-slate),0.20); border-radius: 9px; background: rgba(var(--ava-rgb-slate),0.06); color: var(--ava-slate-100); font: 600 12px Inter; padding: 7px 12px; cursor: pointer; transition: background .15s, border-color .15s; }
.ku-upload-btn:hover { background: rgba(var(--ava-rgb-slate),0.12); }
.ku-upload-btn.is-dragover { background: rgba(var(--ava-rgb-aqua),0.10); border-color: rgba(var(--ava-rgb-aqua),0.45); }

/* User tab: the single source badge is not clickable (only one source), so it reads as a label. */
.ku-src.is-static { cursor: default; }
.ku-src.is-static:hover { background: rgba(var(--ava-rgb-slate),0.16); }

/* ===== Benutzerwissen — single card (upload strip on top, file tile grid below) ===== */
.ku-user { display: block; }
.ku-user-card { padding: 20px; display: flex; flex-direction: column; gap: 18px; }
.ku-user-head { display: flex; justify-content: flex-end; }
.ku-user-upload { display: flex; flex-direction: column; gap: 12px; }
.ku-user-files { display: block; }

/* Drop zone: click anywhere to pick, or drag files onto it. */
.ku-dz {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 26px 20px;
    border: 1.5px dashed rgba(var(--ava-rgb-slate),0.28);
    border-radius: 14px;
    background: rgba(var(--ava-rgb-white),0.02);
    color: var(--ava-slate-500);
    text-align: center;
    cursor: pointer;
    transition: background .15s, border-color .15s;
}
.ku-dz-text { font: 500 13.5px Inter; color: var(--ava-slate-500); }

/* Primary upload/save button (teal), full width under the drop zone / staging. */
.ku-save-btn {
    width: 100%;
    display: inline-flex; align-items: center; justify-content: center;
    border: none; border-radius: 11px;
    background: var(--ava-aqua); color: var(--ava-navy);
    font: 700 14px Inter; padding: 12px; cursor: pointer;
    transition: filter .15s, transform .05s;
}

/* Stored files as a three-column tile grid. */
.ku-file-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.ku-file-tile {
    display: flex; align-items: center; gap: 11px;
    min-width: 0; padding: 12px 13px;
    border-radius: 12px;
    background: rgba(var(--ava-rgb-white),0.02);
    border: 1px solid rgba(var(--ava-rgb-slate),0.10);
}
.ku-file-tile-badge { flex: 0 0 auto; width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center; font: 700 11px Inter; border: 1px solid transparent; }
.ku-file-tile-name { flex: 1 1 auto; min-width: 0; font: 600 13.5px Inter; color: var(--ava-slate-100); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ku-file-tile-act { flex: 0 0 auto; display: flex; align-items: center; gap: 6px; }
.ku-file-tile-act .open-btn,
.ku-file-tile-act .danger-ghost { display: inline-grid; place-items: center; width: 32px; height: 32px; padding: 0; border: 1px solid rgba(var(--ava-rgb-slate),0.20); border-radius: 9px; background: transparent; color: var(--ava-slate-500); cursor: pointer; transition: background .15s, color .15s, border-color .15s; }
.ku-file-tile-act .open-btn:disabled,
.ku-file-tile-act .danger-ghost:disabled { opacity: .45; cursor: not-allowed; }

.ku-file-empty { text-align: center; padding: 40px 12px; font: 400 14px Inter; color: var(--ava-slate-700); }

/* Pager under the file grid/list. */
.ku-pager { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 16px 4px 4px; }
.ku-pager .ghost-btn { border: 1px solid rgba(var(--ava-rgb-slate),0.20); border-radius: 9px; background: transparent; color: var(--ava-slate-500); font: 600 12.5px Inter; padding: 7px 14px; cursor: pointer; transition: background .15s, color .15s; }
.ku-pager-info { font: 500 12.5px Inter; color: var(--ava-slate-700); }

/* ===== Firmenwissen — upload entry, pool checkboxes, upload pane ===== */
/* Top "Hochladen" entry: switches the right pane into upload mode. */
.ku-sources-upload { width: 100%; justify-content: center; }
.ku-sources-upload.is-on { background: rgba(var(--ava-rgb-aqua),0.12); border-color: rgba(var(--ava-rgb-aqua),0.40); color: var(--ava-slate-100); }

/* Pool-row upload checkbox (upload mode only) — a sibling of the source button, so ticking it never
   triggers the row's file-view action. */
.ku-src-check { flex: 0 0 auto; display: grid; place-items: center; width: 32px; height: 32px; cursor: pointer; }
.ku-src-check input { width: 16px; height: 16px; accent-color: var(--ava-aqua); cursor: pointer; }

/* Right-pane upload screen. */
.ku-upload-pane { display: flex; flex-direction: column; gap: 14px; width: 100%; }
.ku-upload-target { font: 600 13.5px Inter; color: var(--ava-slate-500); }
.ku-upload-target strong { color: var(--ava-slate-100); font-weight: 700; }

@media (max-width: 900px) {
    .ku-md { grid-template-columns: 1fr; }
    .ku-sources { border-right: 0; border-bottom: 1px solid rgba(var(--ava-rgb-slate),0.10); max-height: 240px; }
    .ku-file-grid { grid-template-columns: repeat(2, 1fr); }

    /* stack the two columns: the staged files sit above the list so the upload button stays in view */
    .ku-detail-body { flex-direction: column; }
    .ku-detail-list { width: 100%; }
    .ku-staging { flex: 0 0 auto; width: 100%; position: static; order: -1; }

    /* the header actions get their own full-width row and wrap, so no button runs off the edge */
    .ku-detail-actions { width: 100%; justify-content: flex-start; }
    .ku-detail-actions > * { flex: 1 1 auto; justify-content: center; text-align: center; }
}

/* ===== prototype <style> helpers ===== */
.ava-scroll::-webkit-scrollbar { width: 9px; }
.ava-scroll::-webkit-scrollbar-thumb { background: rgba(var(--ava-rgb-slate),0.22); border-radius: 99px; }
.ava-scroll::-webkit-scrollbar-track { background: transparent; }

.krow:hover { background: rgba(var(--ava-rgb-white),0.03) !important; }
.krow:hover .krow-act { opacity: 1 !important; }

.btn-primary:hover { filter: brightness(1.06); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { filter: none; cursor: not-allowed; background: rgba(var(--ava-rgb-aqua),0.22) !important; color: rgba(var(--ava-rgb-navy),0.5) !important; }

.ghost-btn:hover { background: rgba(var(--ava-rgb-slate),0.08) !important; color: var(--ava-slate-100) !important; }
.ghost-btn:disabled { opacity: .45; cursor: not-allowed; }

.danger-ghost:hover { background: rgba(var(--ava-rgb-red),0.10) !important; color: var(--ava-coral-soft) !important; border-color: rgba(var(--ava-rgb-red),0.32) !important; }
.danger-ghost:disabled { opacity: .45; cursor: not-allowed; }

.danger-solid { display: inline-flex; align-items: center; gap: 8px; border: none; border-radius: 11px; background: var(--ava-coral); color: var(--ava-on-coral); font: 700 13.5px Inter; padding: 11px 20px; cursor: pointer; transition: filter .15s, transform .05s; }
.danger-solid:hover { filter: brightness(1.06); }
.danger-solid:active { transform: translateY(1px); }
.danger-solid:disabled { opacity: .45; cursor: not-allowed; }

.open-btn:hover { background: rgba(var(--ava-rgb-slate),0.10) !important; color: var(--ava-slate-100) !important; border-color: rgba(var(--ava-rgb-slate),0.30) !important; }
.pooltile:hover { border-color: rgba(var(--ava-rgb-slate),0.30) !important; }
.pill-x:hover { color: var(--ava-coral-soft) !important; }
.addbtn:hover { background: rgba(var(--ava-rgb-slate),0.14) !important; }

.ku-dz:hover { border-color: rgba(var(--ava-rgb-slate),0.35); }
.ku-dz.is-dragover,
#kuDropZone.is-dragover { background: rgba(var(--ava-rgb-aqua),0.07); border-color: rgba(var(--ava-rgb-aqua),0.45); }

.field::placeholder { color: var(--ava-slate-700); }
.field:focus { outline: none; border-color: rgba(var(--ava-rgb-aqua),0.5) !important; box-shadow: 0 0 0 3px rgba(var(--ava-rgb-aqua),0.13); }

@keyframes kuspin { to { transform: rotate(360deg); } }
.ku-spin { animation: kuspin .8s linear infinite; }

/* ===== Loading overlay ===== */
.ku-overlay {
    position: fixed;
    inset: 0;
    z-index: 90;
    background: rgba(var(--ava-rgb-overlay),0.55);
    display: grid;
    place-items: center;
}
.ku-loader { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.ku-loader-text { font: 600 14px Inter; color: var(--ava-slate-100); }

/* ===== Progress bar (shell) ===== */
.knowledge-progress { margin-top: 4px; }
.ava-progress { height: 3px; background: rgba(var(--ava-rgb-slate),0.12); border-radius: 99px; overflow: hidden; margin-top: 16px; }
.ava-progress-bar { height: 100%; background: var(--ava-aqua); transition: width .2s ease; }

.res-error {
    margin-top: 10px;
    padding: 10px 13px;
    border-radius: 10px;
    background: rgba(var(--ava-rgb-brick),0.14);
    border: 1px solid rgba(var(--ava-rgb-brick),0.40);
    color: var(--ava-danger-text);
    font: 500 13px Inter;
}

/* ===== Mobile app bar — ☰ opens the shared user drawer (same as chat) ===== */
.k-mobile-appbar { display: none; }

@media (max-width: 900px) {
    .ku-grid { grid-template-columns: 1fr !important; }
}

@media (max-width: 640px) {
    .ku-file-grid { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
    .k-head { display: none; }
    .knowledge-inner { padding: 8px 16px 22px !important; }

    /* stored/pool file actions can't rely on hover on touch → always visible */
    .krow-act { opacity: 1 !important; }

    .k-mobile-appbar {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 8px 16px 12px;
        padding-top: calc(8px + env(safe-area-inset-top));
        border-bottom: 1px solid rgba(var(--ava-rgb-slate),0.10);
        background: var(--ava-navy-deep);
        position: sticky;
        top: 0;
        z-index: 5;
    }
    .k-mbtn {
        width: 40px;
        height: 40px;
        flex: 0 0 auto;
        border-radius: 11px;
        border: 1px solid rgba(var(--ava-rgb-slate),0.16);
        background: transparent;
        color: var(--ava-slate-500);
        display: grid;
        place-items: center;
        cursor: pointer;
    }
    .k-mobile-title {
        flex: 1;
        min-width: 0;
        font: 700 16px Inter;
        color: var(--ava-slate-100);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

/* Confirm/action modal — 1:1 "AVA Knowledge.dc.html" (.modal-card): borderless card,
   warning-icon + title, ghost cancel + solid-red confirm. Replaces the old .ava-modal here. */
.ku-confirm-overlay {
    position: fixed; inset: 0; z-index: 2000060;
    background: rgba(var(--ava-rgb-overlay),0.66);
    display: grid; place-items: center; padding: 24px;
    animation: avaFadeIn .16s ease;
}
.ku-confirm-card {
    width: 420px; max-width: 100%;
    display: flex; flex-direction: column; gap: 14px;
    padding: 28px; border-radius: 18px;
    background: var(--ava-card); border: 1px solid rgba(var(--ava-rgb-red),0.24);
    box-shadow: 0 30px 80px rgba(var(--ava-rgb-black),0.55);
    animation: avaModalPop .16s ease;
}
.ku-confirm-icon {
    width: 42px; height: 42px; flex: 0 0 auto; border-radius: 50%;
    background: rgba(var(--ava-rgb-red),0.12); border: 1px solid rgba(var(--ava-rgb-red),0.34);
    display: grid; place-items: center;
}
.ku-confirm-cancel {
    border: 1px solid rgba(var(--ava-rgb-slate),0.22); border-radius: 11px; background: transparent;
    color: var(--ava-slate-500); font: 600 14px Inter; padding: 11px 20px; cursor: pointer;
    transition: background .15s, color .15s;
}
.ku-confirm-cancel:hover { background: rgba(var(--ava-rgb-slate),0.08); color: var(--ava-slate-100); }
.ku-confirm-ok {
    border: none; border-radius: 11px; background: var(--ava-coral); color: var(--ava-on-coral);
    font: 700 14px Inter; padding: 11px 22px; cursor: pointer;
    transition: filter .15s, transform .05s;
}
.ku-confirm-ok:hover { filter: brightness(1.06); }
.ku-confirm-ok:active { transform: translateY(1px); }
.ku-confirm-ok:disabled, .ku-confirm-cancel:disabled { opacity: .55; cursor: not-allowed; }

/* Phones: the card fills the available width, padding tightens, and the action
   buttons stretch full-width so nothing overflows a narrow screen. */
@media (max-width: 640px) {
    .ku-confirm-overlay { padding: 16px; }
    .ku-confirm-card { width: 100%; padding: 20px; border-radius: 16px; max-height: calc(100vh - 32px); overflow-y: auto; }
    .ku-confirm-card > div:last-child { flex-wrap: wrap; }
    .ku-confirm-card .ku-confirm-cancel,
    .ku-confirm-card .ku-confirm-ok { flex: 1 1 auto; text-align: center; }
}