/* ============================================================
   LibrairieManager — Styles (vitrine + admin)
   ============================================================ */
:root{
  --brand:#1a5c3a; --brand-2:#14502f; --accent:#d97706;
  --ink:#1f2937; --muted:#6b7280; --line:#e5e7eb; --bg:#f6f7f9;
  --success:#16a34a; --danger:#dc2626; --warn:#d97706;
  --radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:'Segoe UI',system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-2)}
.container{max-width:1180px;margin:0 auto;padding:0 18px}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.25}
.muted{color:var(--muted)}
.mt{margin-top:14px}.mb{margin-bottom:14px}
.ok{color:var(--success);font-weight:700}.bad{color:var(--danger);font-weight:700}
.hint{color:var(--muted);font-size:12px}

/* ---------- Boutons ---------- */
.btn{display:inline-block;background:#fff;border:1px solid var(--line);color:var(--ink);
  padding:9px 16px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600;text-align:center}
.btn:hover{border-color:#cbd5e1}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2);color:#fff}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-block{display:block;width:100%}
.btn-link{background:none;border:0;color:var(--brand);cursor:pointer;padding:0;font-size:13px}
.btn-link.danger,.danger{color:var(--danger)}
button:disabled{opacity:.5;cursor:not-allowed}

/* ---------- Formulaires ---------- */
input,select,textarea{width:100%;padding:9px 11px;border:1px solid #d1d5db;border-radius:8px;font-size:14px;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand);outline-offset:0;border-color:var(--brand)}
label{display:block;font-size:13px;font-weight:600;margin:10px 0 4px}
fieldset{border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin:0 0 14px}
legend{font-weight:700;color:var(--brand);padding:0 6px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}
.form-grid .span2{grid-column:1/-1}
.inline-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.inline-form input,.inline-form select{width:auto;min-width:130px}

/* ---------- Alertes ---------- */
.alert{padding:11px 15px;border-radius:8px;margin:12px 0;font-size:14px}
.alert-success{background:#dcfce7;color:#166534}
.alert-error{background:#fee2e2;color:#991b1b}
.alert-info{background:#dbeafe;color:#1e40af}

/* ---------- Tables ---------- */
.table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden}
.table th,.table td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left;font-size:13.5px}
.table th{background:#f3f4f6;font-weight:700}
.table tr:last-child td{border-bottom:0}
.actions{display:flex;gap:6px;align-items:center;white-space:nowrap}

/* ---------- Tags & badges ---------- */
.tag{display:inline-block;padding:2px 9px;border-radius:999px;background:#eef2f6;font-size:11.5px;font-weight:600}
.tag-completed,.tag-active,.tag-available,.tag-paid{background:#dcfce7;color:#166534}
.tag-pending,.tag-issued{background:#fef3c7;color:#92400e}
.tag-cancelled,.tag-suspended,.tag-lost,.tag-overdue,.tag-unpaid,.tag-sold{background:#fee2e2;color:#991b1b}
.badge{display:inline-block;background:var(--accent);color:#fff;border-radius:999px;padding:1px 8px;font-size:12px}
.badge-red{background:var(--danger)}

/* ============================================================
   VITRINE
   ============================================================ */
.site-header{background:#fff;box-shadow:0 1px 8px rgba(0,0,0,.06);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;gap:18px;padding:12px 18px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-size:20px;font-weight:800;color:var(--brand)}
.brand-mark{font-size:26px}
.header-search{flex:1;display:flex;min-width:220px}
.header-search input{flex:1;border-radius:8px 0 0 8px}
.header-search button{border:1px solid var(--brand);background:var(--brand);color:#fff;padding:0 16px;border-radius:0 8px 8px 0;cursor:pointer}
.header-actions{display:flex;gap:14px;align-items:center;font-size:14px;font-weight:600}
.cart-link{position:relative}
.main-nav{display:flex;gap:22px;padding:8px 18px;border-top:1px solid var(--line);font-size:14px;font-weight:600;flex-wrap:wrap}
main.container{padding:26px 18px 40px;min-height:60vh}
.section-title{font-size:20px;font-weight:800;margin:26px 0 14px;color:var(--ink)}
.section-title::after{content:"";display:block;width:46px;height:4px;background:var(--accent);border-radius:2px;margin-top:6px}

/* Hero / slider */
.hero{background:var(--brand);color:#fff;border-radius:var(--radius);overflow:hidden}
.slide{padding:60px 40px;background-size:cover;background-position:center}
.slide-content h2{font-size:30px;margin-bottom:8px}
.hero-plain{padding:60px 40px}

/* Catégories */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-align:center;font-weight:600;color:var(--ink)}
.cat-card:hover{border-color:var(--brand);box-shadow:0 4px 14px rgba(0,0,0,.08)}
.cat-icon{font-size:28px;display:block;margin-bottom:6px}

/* Grille livres */
.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:16px}
.book-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.book-cover{position:relative;aspect-ratio:3/4;display:block;background:#eef2f6}
.book-cover img{width:100%;height:100%;object-fit:cover}
.cover-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:56px;font-weight:800;color:var(--brand);background:linear-gradient(135deg,#e8f1ec,#d5e6dc)}
.cover-placeholder.big{font-size:120px;aspect-ratio:3/4}
.tag-out{position:absolute;top:8px;right:8px;background:var(--danger);color:#fff;font-size:11px;padding:3px 8px;border-radius:6px}
.book-info{padding:12px;display:flex;flex-direction:column;gap:6px;flex:1}
.book-title{font-weight:700;color:var(--ink);font-size:14.5px;line-height:1.3}
.book-author{font-size:12.5px;color:var(--muted)}
.book-price{font-weight:800;color:var(--brand);font-size:15px}

/* Fiche livre */
.book-detail{display:grid;grid-template-columns:320px 1fr;gap:28px}
.book-detail-cover{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.book-detail-cover img{width:100%;display:block}
.crumb{font-size:13px;color:var(--muted);margin-bottom:6px}
.subtitle{color:var(--muted)}
.specs{width:100%;border-collapse:collapse;margin:14px 0;font-size:14px}
.specs td{padding:6px 10px;border-bottom:1px solid var(--line)}
.specs td:first-child{font-weight:600;color:var(--muted);width:160px}
.price-big{font-size:30px;font-weight:800;color:var(--brand);margin:14px 0}
.add-row{display:flex;gap:10px;align-items:center}
.add-row input{width:70px}
.description{margin-top:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.ebook-list{list-style:none;padding:0}

/* Shop */
.shop-layout{display:grid;grid-template-columns:250px 1fr;gap:22px}
.shop-filters{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;height:fit-content}
.shop-filters h3{margin-bottom:10px}

/* Panier / checkout */
.cart-summary{margin-top:14px;display:flex;justify-content:space-between;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px}
.checkout-grid{display:grid;grid-template-columns:1fr 380px;gap:24px}
.checkout-form,.checkout-summary{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.pay-options label{display:flex;align-items:center;gap:10px;font-weight:500;border:1px solid var(--line);border-radius:8px;padding:10px;margin:8px 0;cursor:pointer}
.pay-options input{width:auto}
.checkout-summary .line{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px dashed var(--line);font-size:14px}
.checkout-summary .total{font-size:18px;font-weight:800;border-bottom:0}

.order-success{text-align:center;padding:40px 0}
.order-success .icon{font-size:60px}
.notfound{text-align:center;padding:60px 0}
.faq-list{max-width:760px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin-bottom:10px}
.faq-item summary{font-weight:700;cursor:pointer}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.contact-grid>div{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.auth-card{max-width:420px;margin:30px auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.account-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:16px}
.page-content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;max-width:800px}

/* Footer */
.site-footer{background:#123024;color:#cbd5d1;margin-top:30px;padding:30px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.site-footer h4{color:#fff;margin-bottom:10px}
.site-footer p{margin:4px 0;font-size:14px}
.footer-bottom{border-top:1px solid #1f3d32;margin-top:20px;padding:14px 18px;text-align:center;font-size:13px}

/* Pagination */
.pagination{display:flex;gap:6px;margin:18px 0;flex-wrap:wrap}
.pagination a{background:#fff;border:1px solid var(--line);padding:6px 12px;border-radius:8px;font-size:13px;color:var(--ink)}
.pagination a.on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ============================================================
   ADMIN
   ============================================================ */
.admin-body{background:#eef1f4}
.admin-shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.admin-sidebar{background:#0f2920;color:#d1e0d8;padding:16px 12px;position:sticky;top:0;height:100vh;overflow-y:auto}
.admin-brand{color:#fff;font-weight:800;font-size:17px;padding:6px 10px 16px;border-bottom:1px solid #1f3d32;margin-bottom:10px}
.admin-sidebar nav a{display:block;color:#cfe0d7;padding:8px 10px;border-radius:8px;font-size:13.5px;margin:2px 0}
.admin-sidebar nav a:hover{background:#1a3a2e;color:#fff}
.admin-sidebar nav a.active{background:var(--brand);color:#fff;font-weight:700}
.nav-section{color:#7fa392;font-size:11px;text-transform:uppercase;letter-spacing:.5px;margin:14px 10px 4px;font-weight:700}
.admin-main{min-width:0}
.admin-topbar{background:#fff;padding:12px 22px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}
.admin-title{font-size:18px;font-weight:800}
.admin-top-actions{display:flex;gap:16px;align-items:center;font-weight:600;font-size:14px}
.admin-content{padding:22px}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:20px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;border-left:4px solid var(--brand)}
.kpi.green{border-left-color:var(--success)}
.kpi.warn{border-left-color:var(--warn)}
.kpi-label{display:block;font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.kpi-value{display:block;font-size:24px;font-weight:800;margin-top:4px}
.admin-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px;align-items:start}

/* POS */
.pos-layout{display:grid;grid-template-columns:1fr 440px;gap:18px;align-items:start}
.pos-left,.pos-right{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.pos-totals{margin:14px 0;padding:12px;background:#f8faf9;border-radius:10px;font-size:14px}
.pos-totals .grand{font-size:20px;font-weight:800;color:var(--brand);border-top:1px solid var(--line);margin-top:8px;padding-top:8px}
.search-results{margin-top:10px;display:flex;flex-direction:column;gap:6px}
.result-item{width:100%;text-align:left;background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px 12px;cursor:pointer;display:flex;justify-content:space-between}
.result-item:hover{border-color:var(--brand)}
.checkout-form-pos label{margin-top:8px}
.purchase-line{display:flex;gap:8px;margin:6px 0}
.purchase-line select{flex:2}
.purchase-line input{flex:1}

/* Notifications */
.notif-list{display:flex;flex-direction:column;gap:8px}
.notif-item button{width:100%;text-align:left;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;cursor:pointer;display:flex;flex-direction:column;gap:3px}
.notif-item.unread button{border-left:4px solid var(--accent);background:#fffdf5}
.notif-item strong{font-size:14px}
.notif-item small{color:var(--muted)}

/* Responsive */
@media(max-width:900px){
  .book-detail,.shop-layout,.checkout-grid,.pos-layout,.admin-shell{grid-template-columns:1fr}
  .admin-sidebar{height:auto;position:static}
  .form-grid{grid-template-columns:1fr}
}