/* ===================================================================
   Cowork Knowledge — Frontend-Styling
   Namespaced-BEM: cw-kb-*, cw-btn-*, cw-quota-*, cw-badge-*
   =================================================================== */

:root {
    --cw-kb-bg:        #e8edf2;
    --cw-kb-surface:   #ffffff;
    --cw-kb-border:    #d4dae2;
    --cw-kb-text:      #1f2a37;
    --cw-kb-muted:     #6b7280;
    --cw-kb-primary:   #196297;
    --cw-kb-primary-d: #0f3f62;
    --cw-kb-accent:    #D4A84B;
    --cw-kb-danger:    #b8342d;
    --cw-kb-ok:        #2c8a5a;
    --cw-kb-warn:      #d97706;
    --cw-kb-critical:  #b8342d;
    --cw-kb-radius:    10px;
    --cw-kb-radius-sm: 6px;
    --cw-kb-shadow:    0 1px 2px rgba(15, 63, 98, 0.08), 0 4px 12px rgba(15, 63, 98, 0.06);
}

html { scroll-behavior: smooth; }

.cw-kb-body {
    margin: 0; padding: 0;
    background: var(--cw-kb-bg);
    color: var(--cw-kb-text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    line-height: 1.45;
}

.cw-kb-page {
    width: 100%; max-width: 1200px;
    margin: 0 auto;
    padding: 16px 16px 40px;
}

/* ------------------------- HEADER ---------------------------------- */

.cw-kb-header {
    background: var(--cw-kb-surface);
    border: 1px solid var(--cw-kb-border);
    border-radius: var(--cw-kb-radius);
    box-shadow: var(--cw-kb-shadow);
    padding: 12px 16px;
    margin-bottom: 16px;
}
.cw-kb-header__inner {
    display: flex; align-items: center; gap: 16px;
    justify-content: space-between; flex-wrap: wrap;
}
.cw-kb-header__brand {
    display: flex; align-items: center; gap: 12px; min-width: 0;
}
.cw-kb-header__logo {
    width: 36px; height: 36px;
    color: var(--cw-kb-primary);
    flex: 0 0 auto;
}
.cw-kb-header__title {
    margin: 0; font-size: 1.2rem; font-weight: 600; color: var(--cw-kb-primary-d);
}
.cw-kb-header__sub {
    font-size: 0.85rem; color: var(--cw-kb-muted);
}
.cw-kb-header__meta {
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}

/* ------------------------- BADGES & QUOTA -------------------------- */

.cw-badge {
    display: inline-block; padding: 3px 9px; font-size: 0.78rem;
    border-radius: 999px; background: #eef2f7; color: var(--cw-kb-primary-d);
    font-weight: 600; letter-spacing: 0.01em;
    text-decoration: none;
}
.cw-badge--admin { background: #fff4d6; color: #8a6a12; }
.cw-badge--dash  { background: #e4ecf4; }

.cw-quota {
    display: inline-flex; align-items: baseline; gap: 6px;
    padding: 4px 10px; border-radius: 999px;
    background: #e6f3ea; color: #1f6b42; font-size: 0.82rem;
    border: 1px solid #cfe6d8;
}
.cw-quota--warn     { background: #fef3dd; color: #8a5a0a; border-color: #f4dfa6; }
.cw-quota--critical { background: #fde1df; color: #92221d; border-color: #f4bcb7; }
.cw-quota__label    { font-weight: 600; }

/* ------------------------- BUTTONS --------------------------------- */

.cw-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 14px; border: 1px solid var(--cw-kb-border);
    border-radius: var(--cw-kb-radius-sm);
    background: #f2f4f7; color: var(--cw-kb-text);
    font-size: 0.9rem; font-weight: 500; cursor: pointer;
    text-decoration: none; line-height: 1.1;
    transition: background 120ms, border-color 120ms, color 120ms;
}
.cw-btn:hover           { background: #e4e8ef; }
.cw-btn--primary        { background: var(--cw-kb-primary); color: #fff; border-color: var(--cw-kb-primary); }
.cw-btn--primary:hover  { background: var(--cw-kb-primary-d); border-color: var(--cw-kb-primary-d); }
.cw-btn--ghost          { background: transparent; }
.cw-btn--danger         { background: #fff; color: var(--cw-kb-danger); border-color: #e7bcb9; }
.cw-btn--danger:hover   { background: #fde1df; }
.cw-btn--icon           { padding: 6px; border-radius: 50%; }
.cw-btn:disabled        { opacity: 0.6; cursor: not-allowed; }

/* ------------------------- PANELS / LAYOUT ------------------------- */

.cw-kb-panel {
    background: var(--cw-kb-surface);
    border: 1px solid var(--cw-kb-border);
    border-radius: var(--cw-kb-radius);
    box-shadow: var(--cw-kb-shadow);
    padding: 18px 20px; margin-bottom: 16px;
}
.cw-kb-panel--center { text-align: center; color: var(--cw-kb-muted); }
.cw-kb-panel__head {
    display: flex; justify-content: space-between; align-items: center;
    gap: 12px; flex-wrap: wrap; margin-bottom: 12px;
}
.cw-kb-panel h2, .cw-kb-panel h3 { margin: 0; color: var(--cw-kb-primary-d); }

.cw-kb-hint {
    color: var(--cw-kb-muted); font-size: 0.9rem; margin: 4px 0 14px;
}

/* ------------------------- SEARCH ---------------------------------- */

.cw-kb-search {
    background: var(--cw-kb-surface);
    border: 1px solid var(--cw-kb-border);
    border-radius: var(--cw-kb-radius);
    box-shadow: var(--cw-kb-shadow);
    padding: 14px 16px; margin-bottom: 16px;
}
.cw-kb-search__inner { display: flex; gap: 8px; flex-wrap: wrap; }
.cw-kb-search__input {
    flex: 1 1 300px; min-width: 0;
    padding: 10px 14px; font-size: 1rem;
    border: 1px solid var(--cw-kb-border); border-radius: var(--cw-kb-radius-sm);
    background: #fafbfc; color: var(--cw-kb-text);
}
.cw-kb-search__input:focus {
    outline: 2px solid var(--cw-kb-primary); outline-offset: -1px;
    background: #fff;
}

.cw-kb-filter {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px; margin-top: 12px;
}
.cw-kb-filter__group { display: flex; flex-direction: column; gap: 6px; }
.cw-kb-filter__label {
    font-size: 0.78rem; color: var(--cw-kb-muted); font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.04em;
}
.cw-kb-chips { display: flex; gap: 6px; flex-wrap: wrap; }
.cw-kb-chip {
    display: inline-block; padding: 4px 10px; font-size: 0.82rem;
    background: #eef2f7; color: var(--cw-kb-primary-d);
    border: 1px solid transparent; border-radius: 999px; cursor: pointer;
    user-select: none;
}
.cw-kb-chip--active {
    background: var(--cw-kb-primary); color: #fff;
}

/* ------------------------- RESULTS --------------------------------- */

.cw-kb-results {
    display: flex; flex-direction: column; gap: 10px;
}
.cw-kb-results__hint {
    padding: 14px; text-align: center; color: var(--cw-kb-muted);
}
.cw-kb-entry {
    background: var(--cw-kb-surface);
    border: 1px solid var(--cw-kb-border);
    border-radius: var(--cw-kb-radius);
    box-shadow: var(--cw-kb-shadow);
    padding: 14px 18px;
}
.cw-kb-entry__head {
    display: flex; justify-content: space-between; align-items: baseline;
    gap: 12px; flex-wrap: wrap;
}
.cw-kb-entry__title { margin: 0 0 6px; color: var(--cw-kb-primary-d); font-size: 1rem; }
.cw-kb-entry__meta  { font-size: 0.78rem; color: var(--cw-kb-muted); }
.cw-kb-entry__body  { margin: 6px 0 8px; white-space: pre-wrap; }
.cw-kb-entry__tags  { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.cw-kb-entry__tag   {
    font-size: 0.75rem; padding: 2px 8px; background: #eef2f7; color: var(--cw-kb-primary-d);
    border-radius: 999px;
}
.cw-kb-entry__score {
    font-size: 0.72rem; color: var(--cw-kb-muted); font-variant-numeric: tabular-nums;
}
.cw-kb-entry__actions {
    display: flex; gap: 6px; margin-top: 10px;
    padding-top: 10px; border-top: 1px dashed var(--cw-kb-border);
}

/* ------------------------- TABS ------------------------------------ */

.cw-kb-tabs {
    display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap;
    border-bottom: 1px solid var(--cw-kb-border);
}
.cw-kb-tabs__btn {
    background: none; border: 0; padding: 10px 16px;
    font-size: 0.92rem; color: var(--cw-kb-muted);
    border-bottom: 3px solid transparent; cursor: pointer;
    font-family: inherit;
}
.cw-kb-tabs__btn:hover { color: var(--cw-kb-primary-d); }
.cw-kb-tabs__btn--active {
    color: var(--cw-kb-primary-d); border-bottom-color: var(--cw-kb-primary);
    font-weight: 600;
}

/* ------------------------- FORMS ----------------------------------- */

.cw-kb-form__row {
    display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px;
}
.cw-kb-form__row span {
    font-size: 0.82rem; color: var(--cw-kb-muted); font-weight: 600;
}
.cw-kb-form__row input,
.cw-kb-form__row select,
.cw-kb-form__row textarea {
    padding: 9px 12px; font-size: 0.95rem;
    border: 1px solid var(--cw-kb-border); border-radius: var(--cw-kb-radius-sm);
    background: #fafbfc; font-family: inherit; color: var(--cw-kb-text);
}
.cw-kb-form__row input:focus,
.cw-kb-form__row select:focus,
.cw-kb-form__row textarea:focus {
    outline: 2px solid var(--cw-kb-primary); outline-offset: -1px;
    background: #fff;
}
.cw-kb-form__grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}
.cw-kb-form__actions {
    display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px;
}
.cw-kb-form__inline {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--cw-kb-muted); font-size: 0.88rem;
}
.cw-kb-form__error {
    margin: 6px 0; padding: 8px 12px;
    background: #fde1df; color: var(--cw-kb-danger);
    border: 1px solid #e7bcb9; border-radius: var(--cw-kb-radius-sm);
    font-size: 0.9rem;
}

/* ------------------------- ENTRY FORM ------------------------------ */

.cw-kb-entry-form {
    background: #f8fafc;
    border: 1px solid var(--cw-kb-border);
    border-radius: var(--cw-kb-radius);
    padding: 16px; margin-bottom: 16px;
}
.cw-kb-entry-form h3 { margin: 0 0 12px; color: var(--cw-kb-primary-d); }

.cw-kb-entry-list { display: flex; flex-direction: column; gap: 10px; }

/* ------------------------- META PANEL ------------------------------ */

.cw-kb-meta-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px; margin-top: 8px;
}
.cw-kb-meta-col h3 { margin: 0 0 8px; font-size: 1rem; color: var(--cw-kb-primary-d); }
.cw-kb-meta-list {
    display: flex; flex-direction: column; gap: 4px; margin-bottom: 8px;
}
.cw-kb-meta-row {
    display: grid; grid-template-columns: 120px 1fr auto;
    gap: 6px; align-items: center;
}
.cw-kb-meta-row input {
    padding: 6px 8px; font-size: 0.85rem;
    border: 1px solid var(--cw-kb-border); border-radius: var(--cw-kb-radius-sm);
    background: #fff;
}
.cw-kb-meta-row__key { font-family: monospace; color: var(--cw-kb-muted); }
.cw-kb-meta-del {
    background: none; border: 0; cursor: pointer;
    color: var(--cw-kb-danger); padding: 4px 6px; font-size: 0.9rem;
}
.cw-kb-meta-add {
    display: grid; grid-template-columns: 120px 1fr auto;
    gap: 6px; align-items: center; margin-top: 6px;
}

/* ------------------------- API PANEL ------------------------------- */

.cw-kb-api-status {
    display: flex; flex-direction: column; gap: 6px;
    padding: 10px 12px; background: #f2f4f7;
    border-radius: var(--cw-kb-radius-sm); margin-bottom: 14px;
    font-size: 0.9rem;
}
.cw-kb-api-result {
    margin-top: 10px; padding: 8px 12px;
    background: #e6f3ea; color: #1f6b42;
    border: 1px solid #cfe6d8; border-radius: var(--cw-kb-radius-sm);
    font-size: 0.88rem;
}
.cw-kb-api-result--error {
    background: #fde1df; color: var(--cw-kb-danger);
    border-color: #e7bcb9;
}

/* ------------------------- MODAL ----------------------------------- */

.cw-kb-modal {
    position: fixed; inset: 0; z-index: 100;
    display: flex; align-items: center; justify-content: center;
}
.cw-kb-modal[hidden] { display: none; }
.cw-kb-modal__backdrop {
    position: absolute; inset: 0; background: rgba(15, 63, 98, 0.4);
}
.cw-kb-modal__dialog {
    position: relative; background: #fff;
    border-radius: var(--cw-kb-radius);
    box-shadow: 0 10px 40px rgba(15, 63, 98, 0.3);
    padding: 18px 20px; max-width: 420px; width: 92%;
}
.cw-kb-modal__header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 12px;
}
.cw-kb-modal__header h2 {
    margin: 0; font-size: 1.1rem; color: var(--cw-kb-primary-d);
}

/* ------------------------- RESPONSIVE ------------------------------ */

@media (max-width: 640px) {
    .cw-kb-page { padding: 8px 8px 24px; }
    .cw-kb-header__inner { flex-direction: column; align-items: flex-start; }
    .cw-kb-tabs { overflow-x: auto; flex-wrap: nowrap; }
}