/* =========================================================================
   main.css — Biblio3 Manager
   Thème Noir & Blanc, entièrement piloté par variables CSS.
   Pour changer d'ambiance, modifiez uniquement le bloc :root ci-dessous.
   ========================================================================= */

/* ---- Variables --------------------------------------------------------- */
:root {
    --color-bg:      #ffffff;
    --color-text:    #000000;
    --color-accent:  #000000;
    --color-border:  #000000;
    --color-muted:   #888888;
    --color-hover:   #f0f0f0;
    --color-active:  #000000;
    --color-active-text: #ffffff;
    --color-error:   #cc0000;
    --color-orphan:  #ffeeee;
    --radius:        0px;
    --font:          "Courier New", Courier, monospace;
    --sidebar-width: 200px;
}

/* ---- Reset minimal ----------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    display: flex;
    min-height: 100vh;
}

/* ---- Sidebar ----------------------------------------------------------- */
#sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    border-right: 2px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow-y: auto;
}

#sidebar-logo {
    font-size: 1.3rem;
    font-weight: bold;
    letter-spacing: 0.1em;
    padding: 1rem;
    border-bottom: 2px solid var(--color-border);
    text-align: center;
}

.nav-section { padding: 0.5rem 0; border-bottom: 1px solid var(--color-border); }
.nav-section--bottom { margin-top: auto; }

.nav-section-title {
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    color: var(--color-muted);
    padding: 0.4rem 1rem 0.2rem;
}

.nav-btn {
    display: block;
    width: 100%;
    background: none;
    border: none;
    border-left: 3px solid transparent;
    text-align: left;
    font-family: var(--font);
    font-size: 0.78rem;
    padding: 0.45rem 1rem;
    cursor: pointer;
    color: var(--color-text);
    transition: background 0.1s;
}
.nav-btn:hover  { background: var(--color-hover); }
.nav-btn.active {
    border-left-color: var(--color-accent);
    font-weight: bold;
    background: var(--color-hover);
}

/* ---- Main -------------------------------------------------------------- */
#main {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1rem 1.5rem;
    overflow: hidden;
}

#context-title {
    font-size: 1rem;
    letter-spacing: 0.15em;
    margin-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 0.4rem;
}

/* ---- Orphan banner ----------------------------------------------------- */
.orphan-banner {
    font-size: 0.8rem;
    background: var(--color-orphan);
    border: 1px solid var(--color-border);
    padding: 0.3rem 0.8rem;
    margin-bottom: 0.5rem;
}

/* ---- Tab bar ----------------------------------------------------------- */
#tab-bar {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.tab-btn {
    background: none;
    border: 1px solid var(--color-border);
    border-bottom: none;
    font-family: var(--font);
    font-size: 0.72rem;
    padding: 0.4rem 0.8rem;
    cursor: pointer;
    color: var(--color-text);
    margin-right: 2px;
    position: relative;
    top: 2px;
}
.tab-btn:hover  { background: var(--color-hover); }
.tab-btn.active {
    background: var(--color-active);
    color: var(--color-active-text);
    font-weight: bold;
}

.tab-panel        { display: none; }
.tab-panel.active { display: flex; flex-direction: column; }

/* ---- Toolbar ----------------------------------------------------------- */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.toolbar-left { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }

select, input[type="text"], input[type="number"], textarea {
    font-family: var(--font);
    font-size: 0.78rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    padding: 0.25rem 0.4rem;
    border-radius: var(--radius);
}
select:focus, input:focus, textarea:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 1px;
}

/* ---- Buttons ----------------------------------------------------------- */
.btn {
    font-family: var(--font);
    font-size: 0.78rem;
    padding: 0.3rem 0.7rem;
    cursor: pointer;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    min-height: 44px;     /* accessible touch target */
    min-width: 44px;
}
.btn--primary {
    background: var(--color-active);
    color: var(--color-active-text);
}
.btn--primary:hover { opacity: 0.85; }

.btn--secondary {
    background: var(--color-bg);
    color: var(--color-text);
}
.btn--secondary:hover { background: var(--color-hover); }

.btn--danger {
    background: var(--color-bg);
    color: var(--color-error);
    border-color: var(--color-error);
}
.btn--danger:hover { background: var(--color-orphan); }

/* ---- Data table -------------------------------------------------------- */
.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    flex: 1;
}

#data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.78rem;
}

#data-table th, #data-table td {
    border: 1px solid var(--color-border);
    padding: 0.3rem 0.5rem;
    white-space: nowrap;
    text-align: left;
}

#filter-inputs-row th { padding: 0.2rem 0.3rem; }
#filter-inputs-row input {
    width: 100%;
    min-width: 60px;
    border: 1px solid var(--color-muted);
}

#table-headers-row th {
    background: var(--color-active);
    color: var(--color-active-text);
    font-weight: bold;
    cursor: pointer;
    user-select: none;
    letter-spacing: 0.05em;
}
#table-headers-row th:hover { opacity: 0.85; }

#table-body tr { cursor: pointer; }
#table-body tr:hover  { background: var(--color-hover); }
#table-body tr.selected { background: var(--color-hover); font-weight: bold; }

/* Underlined clickable names (filiation trigger) */
.filiation-trigger {
    text-decoration: underline;
    cursor: pointer;
    color: var(--color-text);
}
.filiation-trigger:hover { color: var(--color-muted); }

/* ---- Pagination -------------------------------------------------------- */
#table-pagination {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
    align-items: center;
}

.page-btn {
    font-family: var(--font);
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
}
.page-btn:hover    { background: var(--color-hover); }
.page-btn.current  {
    background: var(--color-active);
    color: var(--color-active-text);
    font-weight: bold;
}
.page-btn:disabled { opacity: 0.35; cursor: default; }

.page-info {
    font-size: 0.75rem;
    color: var(--color-muted);
    padding: 0 0.5rem;
    line-height: 44px;
}

/* ---- Forms ------------------------------------------------------------- */
.form-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 0.5rem 1rem;
    max-width: 700px;
    margin-top: 0.5rem;
}
.form-grid label  { font-size: 0.78rem; align-self: center; }
.form-grid input, .form-grid select, .form-grid textarea {
    width: 100%;
}
.form-error { color: var(--color-error); font-size: 0.75rem; }
.form-actions {
    grid-column: 1 / -1;
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

/* ---- Filiation section ------------------------------------------------- */
#filiation-section {
    margin-top: 1rem;
    border-top: 1px solid var(--color-border);
    padding-top: 0.75rem;
}

/* ---- Trash list -------------------------------------------------------- */
.trash-group { margin-bottom: 1.5rem; }
.trash-group-title {
    font-weight: bold;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.2rem;
    margin-bottom: 0.5rem;
}
.trash-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--color-border);
    margin-bottom: 0.25rem;
    font-size: 0.78rem;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.trash-actions { display: flex; gap: 0.5rem; }

/* ---- Utility ----------------------------------------------------------- */
.text-muted   { color: var(--color-muted); }
.text-error   { color: var(--color-error); }
.badge {
    font-size: 0.65rem;
    border: 1px solid var(--color-border);
    padding: 0.05rem 0.3rem;
    letter-spacing: 0.05em;
}

/* ---- Boutons icônes (Prompt 8c — gestion prêts) ------------------------ */
.btn-icon {
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    cursor: pointer;
    padding: .2rem .3rem;
    min-height: 36px;
    min-width: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 2px;
    vertical-align: middle;
}
.btn-icon img    { width: 20px; height: 20px; display: block; }
.btn-icon:hover  { background: var(--color-hover); }

/* Livre en prêt actif : icône "Prêter" inversée + désactivée */
.btn-icon--on-loan {
    background: var(--color-active);
    cursor: not-allowed;
    pointer-events: none;
}
.btn-icon--on-loan img { filter: invert(1); }

/* Ligne de la table correspondant à un livre prêté */
.book-row--on-loan { background: var(--color-hover) !important; }