/* ============================================================
   BBLIBRARY — Tasarım Sistemi v2
   ============================================================ */

:root {
  --bg:          #EAE8D9;
  --surface:     #FDFCF8;
  --surface-2:   #F2EFE4;
  --border:      #D5D0BC;
  --border-light:#E5E2D5;
  --navy:        #0F3460;
  --navy-dark:   #0A2245;
  --navy-light:  #1D50A2;
  --navy-xlight: #2A65C0;
  --accent:      #E07820;
  --blue-link:   #1A5BB5;
  --text:        #1E2C3E;
  --text-2:      #374F68;
  --text-muted:  #7A8FA8;
  --sidebar-w:   260px;
  --header-h:    56px;
  --font-ui:     'Assistant',-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;
  --font-read:   'Lora',Georgia,'Times New Roman',serif;
  --radius:      7px;
  --radius-lg:   12px;
  --shadow-sm:   0 1px 4px rgba(15,52,96,.07);
  --shadow:      0 3px 14px rgba(15,52,96,.10);
  --shadow-lg:   0 10px 40px rgba(15,52,96,.16);
  --tr:          .18s ease;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px}
body{font-family:var(--font-ui);background:var(--bg);color:var(--text);height:100vh;overflow:hidden;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}


/* ════════════════════════════════════════
   HEADER
════════════════════════════════════════ */
.header{height:var(--header-h);background:linear-gradient(135deg,var(--navy-dark),var(--navy) 50%,#163D76);box-shadow:0 2px 16px rgba(0,0,0,.3);position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center}
.header-inner{width:100%;display:flex;align-items:center}
.header-logo-zone{width:var(--sidebar-w);flex-shrink:0;display:flex;align-items:center;padding:0 18px;border-right:1px solid rgba(255,255,255,.08);height:var(--header-h)}
.logo{display:flex;align-items:center;gap:10px;user-select:none}
.logo-emblem{width:32px;height:32px;flex-shrink:0;opacity:.9}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-brand{font-size:12px;font-weight:800;letter-spacing:1.8px;color:#fff;text-transform:uppercase}
.logo-tagline{font-size:9px;color:rgba(255,255,255,.4);letter-spacing:.3px;margin-top:1px}

.header-main{flex:1;display:flex;align-items:center;padding:0 20px}
.search-wrap{flex:1;max-width:480px;position:relative}
.search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:15px;height:15px;pointer-events:none;opacity:.4}
.search-input{width:100%;padding:7px 16px 7px 36px;background:rgba(255,255,255,.09);border:1.5px solid rgba(255,255,255,.14);border-radius:20px;color:#fff;font-size:13px;transition:var(--tr);outline:none}
.search-input::placeholder{color:rgba(255,255,255,.3)}
.search-input:focus{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.35)}

.search-results{display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid var(--border);max-height:420px;overflow-y:auto;z-index:300}
.search-results.open{display:block}
.search-result-item{padding:10px 16px;cursor:pointer;border-bottom:1px solid var(--border-light);transition:background var(--tr);display:flex;align-items:flex-start;gap:10px}
.search-result-item:last-child{border:none}
.search-result-item:hover{background:#EDE9DA}
.sr-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0;margin-top:5px}
.sr-body{flex:1;min-width:0}
.sr-name{font-size:13px;font-weight:500;color:var(--text);line-height:1.4}
.sr-path{font-size:10.5px;color:var(--text-muted);margin-top:1px}
.sr-highlight{background:#fde68a;border-radius:2px;padding:0 1px}
.search-empty{padding:20px;text-align:center;color:var(--text-muted);font-size:13px}

.header-right{padding-right:18px;display:flex;align-items:center;gap:10px;flex-shrink:0}
.lang-pill{display:flex;align-items:center;gap:5px;padding:5px 11px;border-radius:16px;border:1.5px solid rgba(255,255,255,.18);cursor:pointer;user-select:none;transition:var(--tr);position:relative}
.lang-pill:hover{background:rgba(255,255,255,.1)}
.lang-code{font-size:11px;font-weight:700;color:#fff;letter-spacing:.8px}
.lang-caret{width:10px;opacity:.5}
.lang-dropdown{display:none;position:absolute;top:calc(100% + 8px);right:0;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-lg);border:1px solid var(--border);min-width:160px;overflow:hidden;z-index:200}
.lang-dropdown.open{display:block}
.lang-opt{display:flex;align-items:center;justify-content:space-between;padding:9px 14px;font-size:12.5px;cursor:pointer;transition:background var(--tr)}
.lang-opt:hover{background:#EDE9DA}
.lang-opt.active{font-weight:700;color:var(--navy)}

.menu-btn{display:none;flex-direction:column;gap:4px;padding:6px}
.menu-btn span{display:block;width:18px;height:2px;background:rgba(255,255,255,.8);border-radius:2px}


/* ════════════════════════════════════════
   LAYOUT
════════════════════════════════════════ */
.layout{display:flex;flex:1;margin-top:var(--header-h);height:calc(100vh - var(--header-h));overflow:hidden}


/* ════════════════════════════════════════
   SIDEBAR
════════════════════════════════════════ */
.sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;transition:transform var(--tr)}

/* ── Bölüm sekmeleri ── */
.section-tabs{display:flex;flex-direction:column;gap:1px;padding:8px 0;border-bottom:1px solid var(--border-light);flex-shrink:0}
.section-tab{display:flex;align-items:center;gap:9px;padding:8px 18px;font-size:12.5px;font-weight:500;color:var(--text-muted);cursor:pointer;transition:background var(--tr),color var(--tr);text-align:left;border-left:3px solid transparent}
.section-tab svg{width:16px;height:16px;flex-shrink:0;opacity:.6;transition:opacity var(--tr)}
.section-tab:hover{background:#EDE9DA;color:var(--text)}
.section-tab.active{color:var(--navy);font-weight:700;background:#E4E8F0;border-left-color:var(--navy)}
.section-tab.active svg{opacity:1}

/* ── Sidebar panel (makale ağacı) ── */
.sidebar-panel{flex:1;overflow-y:auto;padding:6px 0 16px}
.sidebar-panel::-webkit-scrollbar{width:3px}
.sidebar-panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}

/* ── Yazar grubu ── */
.author-group{margin-bottom:1px}
.author-header{display:flex;align-items:center;padding:9px 16px;cursor:pointer;user-select:none;transition:background var(--tr);gap:9px}
.author-header:hover{background:#EDE9DA}
.author-header.open{background:#E8E4D5}
.author-bar{width:3px;height:30px;border-radius:2px;flex-shrink:0}
.author-info{flex:1;min-width:0}
.author-name{font-size:12.5px;font-weight:700;color:var(--navy);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.author-dates{font-size:9.5px;color:var(--text-muted);margin-top:1px}
.author-count{font-size:10px;color:var(--text-muted);flex-shrink:0}
.author-caret{width:12px;flex-shrink:0;color:var(--text-muted);transition:transform var(--tr)}
.author-header.open .author-caret{transform:rotate(90deg)}
.author-children{display:none}
.author-children.open{display:block}

.coll-header{display:flex;align-items:center;gap:6px;padding:6px 14px 6px 28px;cursor:pointer;user-select:none;font-size:12px;font-weight:600;color:var(--text-2);transition:background var(--tr)}
.coll-header:hover{background:#EAE7D8}
.coll-header.open{color:var(--navy)}
.coll-caret{width:11px;flex-shrink:0;color:var(--text-muted);transition:transform var(--tr)}
.coll-header.open .coll-caret{transform:rotate(90deg)}
.coll-label{flex:1}
.coll-count{font-size:9.5px;color:var(--text-muted)}
.coll-children{display:none}
.coll-children.open{display:block}

.subcoll-header{display:flex;align-items:center;gap:6px;padding:5px 14px 5px 42px;cursor:pointer;user-select:none;font-size:11.5px;font-weight:500;color:var(--text-2);transition:background var(--tr)}
.subcoll-header:hover{background:#EAE7D8}
.subcoll-header.open{color:var(--navy)}
.subcoll-header.open .coll-caret{transform:rotate(90deg)}
.subcoll-children{display:none}
.subcoll-children.open{display:block}

.art-item{display:block;padding:4px 14px;font-size:11.5px;color:var(--text-muted);cursor:pointer;transition:background var(--tr),color var(--tr);line-height:1.5;border-left:2px solid transparent}
.art-item:hover{background:#EDE9DA;color:var(--text)}
.art-item.active{background:#DDE6F5;color:var(--navy);border-left-color:var(--navy);font-weight:600}


/* ════════════════════════════════════════
   ANA İÇERİK
════════════════════════════════════════ */
.content{flex:1;overflow-y:auto;overflow-x:hidden;background:var(--bg);position:relative}
.content::-webkit-scrollbar{width:5px}
.content::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}

.read-progress{position:fixed;top:var(--header-h);left:var(--sidebar-w);right:0;height:2px;z-index:50;pointer-events:none}
.read-progress-bar{height:100%;background:linear-gradient(90deg,var(--navy-xlight),var(--accent));width:0%;transition:width .1s}


/* ════════════════════════════════════════
   MEDYA LİSTESİ
════════════════════════════════════════ */
.media-shell{max-width:900px;margin:0 auto;padding:0 28px 60px}
.media-header{display:flex;align-items:baseline;gap:12px;padding:28px 0 16px;border-bottom:1px solid var(--border-light)}
.media-title{font-size:18px;font-weight:700;color:var(--navy)}
.media-count{font-size:12px;color:var(--text-muted)}

.media-list{display:flex;flex-direction:column;gap:6px;padding:16px 0}
.media-empty{padding:40px 20px;text-align:center;color:var(--text-muted);font-size:13px}

.media-card{display:flex;align-items:flex-start;gap:14px;padding:14px 18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr)}
.media-card:hover{transform:translateX(3px);box-shadow:var(--shadow-sm);border-color:var(--navy-light)}
.media-card.no-media{opacity:.5;cursor:default}
.media-card.no-media:hover{transform:none;box-shadow:none;border-color:var(--border)}
.media-card-icon{font-size:16px;color:var(--navy);flex-shrink:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:#E4E8F0;border-radius:50%}
.media-card-body{flex:1;min-width:0}
.media-card-name{font-size:13.5px;font-weight:600;color:var(--text);line-height:1.4;margin-bottom:3px}
.media-card-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:11px;color:var(--text-muted)}
.media-card-meta span{display:flex;align-items:center;gap:3px}

/* Yazar kartları (makale bölümü) */
.author-card{display:flex;align-items:flex-start;gap:14px;padding:16px 18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:transform var(--tr),box-shadow var(--tr);box-shadow:var(--shadow-sm)}
.author-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.card-icon{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:15px;font-weight:700}
.card-body{flex:1;min-width:0}
.card-name{font-size:13.5px;font-weight:700;color:var(--navy);margin-bottom:3px}
.card-sub{font-size:10.5px;color:var(--text-muted);line-height:1.5}
.card-count{font-size:10.5px;font-weight:600;margin-top:8px;display:inline-block;padding:2px 8px;border-radius:10px}


/* ════════════════════════════════════════
   SAYFALAMA
════════════════════════════════════════ */
.media-pager{display:flex;justify-content:center;gap:4px;padding:20px 0}
.pager-btn{padding:6px 12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);font-size:12px;color:var(--text-2);transition:var(--tr)}
.pager-btn:hover{border-color:var(--navy);color:var(--navy)}
.pager-btn.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.pager-dots{padding:6px 4px;color:var(--text-muted);font-size:12px}


/* ════════════════════════════════════════
   PLAYER
════════════════════════════════════════ */
.player-shell{max-width:900px;margin:0 auto;padding:0 28px 60px}
.player-back{display:inline-flex;align-items:center;gap:6px;padding:12px 0 16px;font-size:12.5px;color:var(--text-muted);cursor:pointer;transition:color var(--tr)}
.player-back:hover{color:var(--navy)}
.player-video-wrap{width:100%;border-radius:var(--radius-lg);overflow:hidden;background:#000;box-shadow:var(--shadow)}
.player-video-wrap video{width:100%;display:block}
.player-audio-wrap{width:100%;padding:20px 0}
.player-audio-wrap audio{width:100%}
.player-info{padding:20px 0 12px}
.player-title{font-size:17px;font-weight:700;color:var(--text);margin-bottom:6px}
.player-desc{font-size:13px;color:var(--text-muted);line-height:1.6}

.player-files{border-top:1px solid var(--border-light);padding-top:16px}
.pf-title{font-size:10px;font-weight:800;letter-spacing:1.5px;text-transform:uppercase;color:var(--text-muted);margin-bottom:10px}
.pf-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--radius);transition:background var(--tr);cursor:pointer}
.pf-item:hover{background:#EDE9DA}
.pf-icon{font-size:13px;color:var(--navy);width:20px;text-align:center;flex-shrink:0}
.pf-name{flex:1;font-size:11.5px;color:var(--text-2);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pf-meta{font-size:10.5px;color:var(--text-muted);flex-shrink:0;white-space:nowrap}


/* ════════════════════════════════════════
   MAKALe OKUYUCU
════════════════════════════════════════ */
.article-shell{max-width:780px;margin:0 auto;padding:0 28px 80px}
.article-topbar{display:flex;align-items:center;gap:10px;padding:12px 0;border-bottom:1px solid var(--border-light);position:sticky;top:0;background:var(--bg);z-index:20}
.nav-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius);border:1.5px solid var(--border);background:var(--surface);color:var(--text-muted);font-size:14px;transition:var(--tr);flex-shrink:0}
.nav-btn:hover:not(:disabled){border-color:var(--navy);color:var(--navy)}
.nav-btn:disabled{opacity:.3;cursor:not-allowed}
.topbar-info{flex:1;text-align:center;font-size:11px;color:var(--text-muted)}
.font-controls{display:flex;gap:3px}
.font-btn{padding:4px 9px;border-radius:4px;border:1.5px solid var(--border);background:var(--surface);color:var(--text-muted);font-family:var(--font-read);transition:var(--tr)}
.font-btn:hover{border-color:var(--navy);color:var(--navy)}
.font-btn.sm{font-size:11px}
.font-btn.lg{font-size:15px}

.article-crumb{padding:10px 0 16px;display:flex;flex-wrap:wrap;gap:3px;align-items:center;font-size:11px;color:var(--text-muted)}
.crumb-item{cursor:pointer;transition:color var(--tr)}
.crumb-item:hover{color:var(--navy)}
.crumb-sep{color:var(--border)}

.article-header-card{background:var(--surface);border-radius:var(--radius-lg) var(--radius-lg) 0 0;border-left:4px solid var(--navy);padding:18px 24px 14px;box-shadow:var(--shadow-sm);border:1px solid var(--border);border-bottom:none}
.article-author-label{font-size:9.5px;font-weight:800;letter-spacing:1.5px;text-transform:uppercase;color:var(--navy);margin-bottom:4px;display:flex;align-items:center;gap:7px}
.article-author-label::before{content:'';width:16px;height:2px;border-radius:1px;background:currentColor;flex-shrink:0}
.article-book-label{font-size:11.5px;color:var(--text-muted)}

.article-body{background:var(--surface);border-radius:0 0 var(--radius-lg) var(--radius-lg);box-shadow:var(--shadow-sm);padding:32px 40px 44px;font-family:var(--font-read);line-height:1.85;color:var(--text);font-size:17px;border:1px solid var(--border);border-top:none}
.article-body h1,.article-body .Chapter{font-size:21px;font-weight:700;color:var(--navy);margin-bottom:24px;line-height:1.3;font-family:var(--font-ui)}
.article-body h2{font-size:16px;font-weight:700;color:var(--navy);margin:28px 0 10px;font-family:var(--font-ui);padding-bottom:6px;border-bottom:1px solid var(--border-light)}
.article-body h3{font-size:14.5px;font-weight:600;color:var(--text-2);margin:22px 0 8px;font-family:var(--font-ui)}
.article-body p{margin-bottom:16px}
.article-body em{font-style:italic}
.article-body strong{font-weight:600}

.loading-block{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;gap:14px;color:var(--text-muted);font-size:13px}
.spinner{width:28px;height:28px;border-radius:50%;border:2.5px solid var(--border-light);border-top-color:var(--navy);animation:spin .75s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.overlay{display:none;position:fixed;inset:0;background:rgba(8,18,36,.5);z-index:90;backdrop-filter:blur(2px)}
.overlay.open{display:block}


/* ════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════ */
@media(max-width:900px){
  .menu-btn{display:flex}
  .header-logo-zone{width:auto;border:none;padding:0 12px}
  .logo-tagline{display:none}
  .header-main{padding:0 8px}
  .sidebar{position:fixed;top:var(--header-h);left:0;bottom:0;z-index:95;transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0);box-shadow:var(--shadow-lg)}
  .read-progress{left:0}
  .media-shell,.player-shell,.article-shell{padding:0 14px 60px}
  .article-body{padding:20px 16px 24px;font-size:15.5px}
  .media-header{padding:20px 0 12px}
  .nav-btn{width:38px;height:38px;font-size:16px}
}

@media(max-width:600px){
  .media-card{padding:10px 14px;gap:10px}
  .media-card-name{font-size:12.5px}
  .article-body{padding:16px 14px 20px}
  .player-video-wrap{border-radius:var(--radius)}
}


/* ════════════════════════════════════════
   RTL
════════════════════════════════════════ */
[dir="rtl"] .header-logo-zone{border-right:none;border-left:1px solid rgba(255,255,255,.08)}
[dir="rtl"] .header-right{padding-right:0;padding-left:18px}
[dir="rtl"] .lang-dropdown{right:auto;left:0}
[dir="rtl"] .search-icon{left:auto;right:13px}
[dir="rtl"] .search-input{padding:7px 36px 7px 16px}
[dir="rtl"] .sidebar{border-right:none;border-left:1px solid var(--border)}
[dir="rtl"] .section-tab{border-left:none;border-right:3px solid transparent}
[dir="rtl"] .section-tab.active{border-right-color:var(--navy)}
[dir="rtl"] .art-item{border-left:none;border-right:2px solid transparent}
[dir="rtl"] .art-item.active{border-right-color:var(--navy)}
[dir="rtl"] .article-header-card{border-left:none;border-right:4px solid var(--navy)}
[dir="rtl"] .read-progress{left:0;right:var(--sidebar-w)}
[dir="rtl"] .media-card:hover{transform:translateX(-3px)}