/*
Theme Name: BiblioElectro
Theme URI: https://genieelectromecanique.com
Author: Génie Électromécanique
Description: Bibliothèque en ligne professionnelle pour livres et cours techniques PDF. Grid 4 colonnes, page livre avec couverture, téléchargement et partage.
Version: 1.0.0
Requires at least: 5.8
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: bibliotheque-electro
Tags: education, library, books, pdf, custom-menu, featured-images
*/

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Source+Sans+3:wght@300;400;600&display=swap');

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

:root{
  --green:#1a6b3a;
  --green-dark:#134d2a;
  --green-light:#e8f4ec;
  --green-mid:#2d8a4e;
  --gold:#c9a84c;
  --gold-light:#f5ecd0;
  --text:#1a1a1a;
  --text-muted:#666;
  --text-light:#999;
  --bg:#fafaf8;
  --bg-card:#ffffff;
  --border:#e5e0d8;
  --shadow-sm:0 2px 8px rgba(26,107,58,0.08);
  --shadow-md:0 8px 24px rgba(26,107,58,0.12);
  --radius:8px;
  --radius-lg:14px;
  --font-title:'Playfair Display',Georgia,serif;
  --font-body:'Source Sans 3',Arial,sans-serif;
}

html{font-size:16px;scroll-behavior:smooth;}
body{font-family:var(--font-body);font-size:15px;line-height:1.7;color:var(--text);background:var(--bg);}
a{color:var(--green);text-decoration:none;transition:color 0.2s;}
a:hover{color:var(--green-dark);}
img{max-width:100%;height:auto;display:block;}
ul,ol{list-style:none;padding:0;margin:0;}

.container{max-width:1240px;margin:0 auto;padding:0 20px;}

/* TOP BAR */
.top-bar{background:var(--green-dark);padding:6px 0;font-size:12px;}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;}
.top-bar span{color:rgba(255,255,255,0.7);}
.top-bar a{color:var(--gold);}
.top-bar a:hover{color:#fff;}

/* HEADER */
#masthead{background:#fff;border-bottom:3px solid var(--green);padding:14px 0;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm);}
#masthead .container{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.site-logo-wrap{display:flex;align-items:center;gap:12px;text-decoration:none;}
.site-logo-icon{width:40px;height:40px;background:var(--green);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.site-logo-icon svg{width:22px;height:22px;fill:#fff;}
.site-logo-text-wrap{}
.site-title-main{font-family:var(--font-title);font-size:24px;font-weight:700;color:var(--text);line-height:1.1;}
.site-title-main .accent{color:var(--green);}
.site-tagline{font-size:10px;color:var(--text-muted);letter-spacing:1.5px;text-transform:uppercase;}
.header-search{flex:1;max-width:360px;position:relative;}
.header-search input{width:100%;padding:9px 16px 9px 40px;border:1.5px solid var(--border);border-radius:24px;font-size:13px;background:var(--bg);transition:border-color 0.2s;}
.header-search input:focus{outline:none;border-color:var(--green);}
.header-search .si{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text-muted);}
.header-stats{display:flex;gap:20px;align-items:center;}
.stat-item{text-align:center;}
.stat-num{font-family:var(--font-title);font-size:18px;font-weight:700;color:var(--green);line-height:1;}
.stat-label{font-size:10px;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;}

/* NAV */
#site-navigation{background:var(--green);}
#site-navigation .container{display:flex;align-items:center;}
ul.main-navigation{display:flex;flex-wrap:wrap;}
ul.main-navigation>li{position:relative;}
ul.main-navigation li a{display:block;padding:12px 16px;color:rgba(255,255,255,0.85);font-size:14px;font-weight:600;white-space:nowrap;transition:all 0.2s;}
ul.main-navigation li a:hover,ul.main-navigation li.current-menu-item>a{background:rgba(255,255,255,0.15);color:#fff;}
ul.main-navigation li>ul{display:none;position:absolute;top:100%;left:0;background:var(--green-dark);min-width:200px;z-index:9999;border-top:2px solid var(--gold);box-shadow:var(--shadow-md);}
ul.main-navigation li>ul>li{display:block;width:100%;}
ul.main-navigation li>ul li a{padding:9px 16px;font-size:13px;border-bottom:0.5px solid rgba(255,255,255,0.1);}
.menu-toggle{display:none;}

/* BREADCRUMB */
.breadcrumb-wrap{background:var(--green-light);border-bottom:1px solid #c5deca;padding:7px 0;font-size:12px;color:var(--text-muted);}
.breadcrumb-wrap a{color:var(--green);font-weight:600;}
.breadcrumb-wrap .sep{margin:0 6px;color:var(--text-light);}

/* LAYOUT */
.site-content{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:28px;padding:28px 0 40px;align-items:start;}
@media(max-width:900px){.site-content{grid-template-columns:1fr;}.sidebar{display:none;}}

/* SECTION HEADING */
.section-heading{display:flex;align-items:center;gap:10px;margin-bottom:20px;}
.section-heading .bar{width:4px;height:24px;background:var(--green);border-radius:2px;flex-shrink:0;}
.section-heading h2{font-family:var(--font-title);font-size:20px;font-weight:700;color:var(--text);}
.section-heading .see-all{margin-left:auto;font-size:13px;color:var(--green);font-weight:600;}

/* BOOKS GRID */
.books-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-bottom:8px;}
@media(max-width:1100px){.books-grid{grid-template-columns:repeat(3,1fr);}}
@media(max-width:680px){.books-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:380px){.books-grid{grid-template-columns:1fr;}}

/* BOOK CARD */
.book-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;cursor:pointer;transition:transform 0.25s,box-shadow 0.25s,border-color 0.25s;position:relative;}
.book-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--green);}

.book-cover{position:relative;height:190px;overflow:hidden;background:var(--green-light);}
.book-cover img{width:100%;height:100%;object-fit:cover;transition:transform 0.35s;}
.book-card:hover .book-cover img{transform:scale(1.06);}

.book-cover-overlay{position:absolute;inset:0;background:rgba(26,107,58,0.88);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;opacity:0;transition:opacity 0.25s;}
.book-card:hover .book-cover-overlay{opacity:1;}

.overlay-view-btn{background:#fff;color:var(--green);padding:8px 18px;border-radius:20px;font-size:12px;font-weight:700;display:flex;align-items:center;gap:6px;transition:all 0.2s;text-decoration:none;}
.overlay-view-btn:hover{background:var(--gold);color:#1a1a1a;}
.overlay-view-btn svg{width:13px;height:13px;}

.book-cat-badge{position:absolute;top:10px;left:10px;background:var(--green);color:#fff;font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;padding:3px 8px;border-radius:4px;z-index:2;}
.book-pages-badge{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.55);color:#fff;font-size:9px;padding:2px 7px;border-radius:10px;z-index:2;}

.book-cover-placeholder{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,#e8f4ec,#d0e8d8);}
.book-cover-placeholder svg{width:44px;height:44px;stroke:var(--green);opacity:0.45;}

.book-info{padding:13px;}
.book-title{font-family:var(--font-title);font-size:13px;font-weight:700;color:var(--text);line-height:1.35;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.book-title a{color:inherit;}
.book-title a:hover{color:var(--green);}

.book-dl-btn{display:flex;align-items:center;justify-content:center;gap:6px;width:100%;background:var(--green);color:#fff;border:none;padding:8px;border-radius:6px;font-size:12px;font-weight:700;cursor:pointer;text-decoration:none;transition:background 0.2s;font-family:var(--font-body);}
.book-dl-btn:hover{background:var(--green-dark);color:#fff;}
.book-dl-btn svg{width:13px;height:13px;fill:currentColor;}

/* SINGLE BOOK */
.single-book{background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border);overflow:hidden;}
.single-book-hero{display:grid;grid-template-columns:280px 1fr;gap:0;}
@media(max-width:700px){.single-book-hero{grid-template-columns:1fr;}}

.single-book-cover-area{background:linear-gradient(160deg,var(--green) 0%,var(--green-dark) 100%);min-height:380px;display:flex;align-items:center;justify-content:center;padding:32px;position:relative;overflow:hidden;}
.single-book-cover-area::before{content:'';position:absolute;inset:0;background:repeating-linear-gradient(45deg,transparent,transparent 20px,rgba(255,255,255,0.03) 20px,rgba(255,255,255,0.03) 40px);}
.book-cover-3d{position:relative;z-index:1;width:180px;border-radius:4px;overflow:hidden;box-shadow:12px 12px 32px rgba(0,0,0,0.4),-2px 0 0 rgba(0,0,0,0.2);}
.book-cover-3d img{width:100%;height:auto;display:block;}
.book-cover-3d-placeholder{width:180px;height:240px;background:rgba(255,255,255,0.15);border-radius:4px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;box-shadow:12px 12px 32px rgba(0,0,0,0.4);}
.book-cover-3d-placeholder svg{width:48px;height:48px;stroke:#fff;opacity:0.7;}
.book-cover-3d-placeholder span{color:rgba(255,255,255,0.7);font-size:12px;text-align:center;padding:0 16px;}

.single-book-info{padding:32px;display:flex;flex-direction:column;gap:16px;background:#fff;}
.single-book-cat{display:inline-block;background:var(--green-light);color:var(--green);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:0.8px;padding:4px 12px;border-radius:4px;width:fit-content;}
.single-book-title{font-family:var(--font-title);font-size:26px;font-weight:700;color:var(--text);line-height:1.2;}
.single-book-meta{display:flex;flex-wrap:wrap;gap:14px;}
.meta-item{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);}
.meta-item svg{width:14px;height:14px;stroke:var(--green);}
.meta-item strong{color:var(--text);}

.single-book-desc{font-size:15px;line-height:1.75;color:var(--text-muted);border-top:1px solid var(--border);padding-top:16px;}

.dl-btn-main{display:inline-flex;align-items:center;gap:10px;background:var(--green);color:#fff;padding:14px 28px;border-radius:8px;font-size:15px;font-weight:700;text-decoration:none;transition:all 0.2s;border:none;cursor:pointer;font-family:var(--font-body);width:100%;justify-content:center;}
.dl-btn-main:hover{background:var(--green-dark);color:#fff;box-shadow:var(--shadow-sm);}
.dl-btn-main svg{width:20px;height:20px;fill:currentColor;}

.share-section{border-top:1px solid var(--border);padding-top:14px;}
.share-label{font-size:12px;color:var(--text-muted);margin-bottom:8px;font-weight:600;text-transform:uppercase;letter-spacing:0.5px;}
.share-btns{display:flex;gap:8px;flex-wrap:wrap;}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:6px;font-size:12px;font-weight:700;border:none;cursor:pointer;color:#fff;text-decoration:none;transition:opacity 0.2s;font-family:var(--font-body);}
.share-btn:hover{opacity:0.85;color:#fff;}
.share-btn svg{width:13px;height:13px;fill:currentColor;}
.share-fb{background:#1877f2;}
.share-wa{background:#25d366;}
.share-tw{background:#1da1f2;}
.share-tg{background:#0088cc;}
.share-copy{background:#555;}

.single-book-content{padding:28px 32px;border-top:1px solid var(--border);}
.single-book-content h2{font-family:var(--font-title);font-size:19px;color:var(--text);margin:24px 0 12px;padding-left:14px;border-left:3px solid var(--green);}
.single-book-content h2:first-child{margin-top:0;}
.single-book-content p{margin-bottom:14px;color:var(--text-muted);line-height:1.8;}

.related-books{padding:24px 32px;border-top:1px solid var(--border);background:var(--bg);}
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;}
@media(max-width:700px){.related-grid{grid-template-columns:repeat(2,1fr);}}

/* SIDEBAR */
.sidebar .widget{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px;margin-bottom:20px;}
.sidebar .widget-title{font-family:var(--font-title);font-size:13px;font-weight:700;color:var(--green);text-transform:uppercase;letter-spacing:0.8px;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--border);}

.sb-book-item{display:flex;gap:12px;margin-bottom:14px;align-items:flex-start;}
.sb-book-item:last-child{margin-bottom:0;}
.sb-book-cover{width:44px;height:56px;background:var(--green-light);border-radius:4px;flex-shrink:0;overflow:hidden;box-shadow:2px 2px 6px rgba(0,0,0,0.1);}
.sb-book-cover img{width:100%;height:100%;object-fit:cover;}
.sb-book-title{font-size:12px;font-weight:600;color:var(--text);line-height:1.35;margin-bottom:4px;}
.sb-book-title a{color:inherit;}
.sb-book-title a:hover{color:var(--green);}
.sb-book-dl{font-size:11px;color:var(--green);font-weight:700;}

.sb-cat-item{display:flex;justify-content:space-between;align-items:center;padding:7px 0;border-bottom:0.5px solid var(--border);font-size:13px;cursor:pointer;}
.sb-cat-item:last-child{border-bottom:none;}
.sb-cat-item:hover{color:var(--green);}
.sb-cat-item a{color:inherit;flex:1;}
.sb-cat-count{background:var(--green-light);color:var(--green);font-size:10px;font-weight:700;padding:2px 7px;border-radius:10px;}

/* PAGINATION */
.pagination{display:flex;justify-content:center;gap:6px;margin:28px 0;flex-wrap:wrap;}
.page-numbers{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:13px;font-weight:600;color:var(--text);background:#fff;transition:all 0.15s;}
.page-numbers:hover,.page-numbers.current{background:var(--green);color:#fff;border-color:var(--green);}

/* FOOTER */
#colophon{background:var(--green-dark);margin-top:12px;}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding:36px 0 24px;border-bottom:1px solid rgba(255,255,255,0.1);}
@media(max-width:760px){.footer-top{grid-template-columns:1fr 1fr;}}
.footer-col-title{font-family:var(--font-title);font-size:14px;color:var(--gold);margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid rgba(255,255,255,0.1);}
.footer-col p{font-size:13px;color:rgba(255,255,255,0.55);line-height:1.7;}
.footer-col a{display:block;font-size:13px;color:rgba(255,255,255,0.55);margin-bottom:7px;}
.footer-col a:hover{color:var(--gold);}
.footer-bottom{padding:14px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;}
.footer-bottom p{font-size:12px;color:rgba(255,255,255,0.35);}
.footer-bottom a{color:rgba(255,255,255,0.45);font-size:12px;}
.footer-bottom a:hover{color:var(--gold);}

.screen-reader-text{clip:rect(1px,1px,1px,1px);position:absolute;height:1px;width:1px;overflow:hidden;}
a:focus,button:focus{outline:2px solid var(--green);outline-offset:2px;}

/* RESPONSIVE */
@media(max-width:768px){
  .top-bar{display:none;}
  #masthead .container{flex-wrap:wrap;}
  .header-stats{display:none;}
  .header-search{max-width:100%;order:3;width:100%;}
  .site-title-main{font-size:20px;}
  .single-book-hero{grid-template-columns:1fr;}
  .single-book-cover-area{min-height:240px;}
  .single-book-info{padding:20px;}
  .single-book-title{font-size:20px;}
  ul.main-navigation{flex-direction:column;}
  ul.main-navigation>li{width:100%;}
}