/* ATC E-Library — Main Stylesheet
   Palette: Navy #0E1F45 | Gold #C9A84C */

:root {
  --navy:#0E1F45; --gold:#C9A84C; --gold-dark:#A8893D; --white:#FFFFFF;
  --gray-50:#F9FAFB; --gray-100:#F3F4F6; --gray-200:#E5E7EB;
  --gray-400:#9CA3AF; --gray-600:#4B5563; --gray-900:#111827;
  --danger:#EF4444; --success:#22C55E; --info:#3B82F6;
  --radius:8px; --shadow:0 1px 3px rgba(0,0,0,.1);
  --sidebar-w:240px; --navbar-h:60px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px}
body{font-family:system-ui,-apple-system,sans-serif;background:var(--gray-50);color:var(--gray-900);line-height:1.6}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--gold-dark)}
img{max-width:100%}

/* Navbar */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--navbar-h);background:var(--navy);display:flex;align-items:center;gap:16px;padding:0 20px;box-shadow:0 2px 8px rgba(0,0,0,.25)}
.navbar-brand img{display:block}
.navbar-search{flex:1;max-width:480px;position:relative}
.navbar-search .search-wrap{position:relative}
.navbar-search .ti-search{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--gray-400);pointer-events:none}
.navbar-search input[type=search]{width:100%;padding:8px 12px 8px 38px;border-radius:6px;border:none;background:rgba(255,255,255,.12);color:#fff;outline:none;font-size:14px}
.navbar-search input::placeholder{color:rgba(255,255,255,.55)}
.navbar-search input:focus{background:rgba(255,255,255,.22)}
.navbar-user{display:flex;align-items:center;gap:12px;margin-left:auto}
.user-menu{position:relative}
.user-menu-toggle{display:flex;align-items:center;gap:8px;background:none;border:none;color:#fff;cursor:pointer;padding:6px 10px;border-radius:6px;font-size:14px}
.user-menu-toggle:hover{background:rgba(255,255,255,.1)}
.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--gold);color:var(--navy);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:13px}
.user-dropdown{display:none;position:absolute;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);box-shadow:var(--shadow);min-width:180px;z-index:200}
.user-dropdown a{display:flex;align-items:center;gap:8px;padding:10px 14px;color:var(--gray-900);font-size:14px}
.user-dropdown a:hover{background:var(--gray-50)}
.user-dropdown hr{border:none;border-top:1px solid var(--gray-200)}
.user-menu:hover .user-dropdown,.user-menu-toggle[aria-expanded=true]+.user-dropdown{display:block}

/* Layout */
body{padding-top:var(--navbar-h)}
.layout{display:flex;min-height:calc(100vh - var(--navbar-h))}
.main-content{flex:1;padding:24px 28px;min-width:0}

/* Sidebar */
.sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--white);border-right:1px solid var(--gray-200);padding:20px 0;overflow-y:auto;position:sticky;top:var(--navbar-h);height:calc(100vh - var(--navbar-h))}
.sidebar-nav{padding:0 12px 12px;border-bottom:1px solid var(--gray-200);margin-bottom:12px}
.sidebar-link{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:6px;font-size:14px;color:var(--gray-600);margin-bottom:2px;transition:background .15s,color .15s}
.sidebar-link:hover,.sidebar-link.active{background:rgba(14,31,69,.07);color:var(--navy)}
.sidebar-link.active{font-weight:600}
.sidebar-section{padding:0 12px}
.sidebar-heading{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--gray-400);margin-bottom:6px;padding:0 4px}
.category-list{list-style:none}
.category-link{display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:6px;font-size:13px;color:var(--gray-600);transition:background .15s,color .15s}
.category-link:hover,.category-link.active{background:rgba(14,31,69,.07);color:var(--navy)}

/* Page header */
.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:10px}
.page-header h1{font-size:22px;font-weight:700;color:var(--navy)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;font-size:14px;font-weight:500;border:none;cursor:pointer;transition:opacity .15s,background .15s;text-decoration:none}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:#1a2f5e;color:#fff}
.btn-outline{background:transparent;color:var(--navy);border:1.5px solid var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn-sm{padding:5px 10px;font-size:13px}
.btn-full{width:100%;justify-content:center}
.btn-icon{background:none;border:none;cursor:pointer;color:var(--gray-400);padding:4px;border-radius:4px;font-size:16px}
.btn-icon:hover{color:var(--navy);background:var(--gray-100)}

/* Stats */
.stats-bar{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap}
.stat-card{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);padding:14px 20px;flex:1;min-width:140px}
.stat-card .ti{font-size:24px;color:var(--gold)}
.stat-card strong{display:block;font-size:22px;font-weight:700;color:var(--navy)}
.stat-card span{font-size:12px;color:var(--gray-400)}

/* Sections */
.section{margin-bottom:32px}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.section-header h2{font-size:17px;font-weight:600;color:var(--navy)}
.see-all{font-size:13px;color:var(--gold-dark);display:flex;align-items:center;gap:4px}

/* Resource cards */
.resource-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.resource-list{display:flex;flex-direction:column;gap:10px}
.resource-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .15s;position:relative}
.resource-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.1)}
.card-type-bar{height:4px;flex-shrink:0}
.card-body{padding:14px;display:flex;flex-direction:column;flex:1}
.card-meta{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.type-badge{font-size:10px;font-weight:700;padding:2px 7px;border-radius:4px;color:#fff}
.category-badge{font-size:11px;padding:2px 7px;border-radius:4px;background:var(--gray-100);color:var(--gray-600)}
.card-title{font-size:14px;font-weight:600;margin-bottom:6px}
.card-title a{color:var(--navy)}
.card-title a:hover{color:var(--gold-dark)}
.card-desc{font-size:13px;color:var(--gray-600);flex:1;margin-bottom:10px}
.card-footer{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--gray-400);margin-top:auto}
.view-count{display:flex;align-items:center;gap:4px}
.card-date{margin-left:auto}
.bookmark-btn{background:none;border:none;cursor:pointer;color:var(--gray-400);font-size:16px;padding:2px}
.bookmark-btn:hover,.bookmark-btn.bookmarked{color:var(--gold-dark)}

/* Resource viewer */
.resource-header{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);padding:20px;margin-bottom:20px}
.resource-header h1{font-size:20px;color:var(--navy);margin:10px 0 6px}
.resource-author{color:var(--gray-400);font-size:14px;margin-bottom:8px}
.resource-desc{color:var(--gray-600);margin-bottom:12px}
.resource-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.resource-viewer{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);padding:20px;margin-bottom:24px;min-height:400px}
#pdf-viewer-wrap{display:flex;flex-direction:column;align-items:center;gap:12px}
#pdf-toolbar{display:flex;align-items:center;gap:12px}
#pdf-canvas{max-width:100%;border:1px solid var(--gray-200)}
.resource-video{width:100%;max-height:480px;background:#000;border-radius:6px}
.resource-audio{width:100%}
.youtube-embed{position:relative;padding-bottom:56.25%;height:0}
.youtube-embed iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none;border-radius:6px}
.link-preview,.download-prompt{text-align:center;padding:40px;display:flex;flex-direction:column;align-items:center;gap:14px}

/* Forms */
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:500;margin-bottom:5px;color:var(--gray-600)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:9px 12px;border:1.5px solid var(--gray-200);border-radius:6px;font-size:14px;background:#fff;color:var(--gray-900);transition:border-color .15s;outline:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--navy)}
.form-row{display:flex;gap:14px;flex-wrap:wrap}
.form-row .form-group{flex:1;min-width:160px}
.flex-2{flex:2}
.req{color:var(--danger)}
.form-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}
.checkbox-label{display:flex;align-items:center;gap:8px;font-size:14px;cursor:pointer}

/* Dropzone */
.dropzone{border:2px dashed var(--gray-200);border-radius:var(--radius);padding:32px;text-align:center;color:var(--gray-400);cursor:pointer;transition:border-color .15s}
.dropzone:hover,.dropzone.drag-over{border-color:var(--navy);color:var(--navy)}
.dropzone .ti{font-size:32px;margin-bottom:8px;display:block}
.dropzone input[type=file]{display:none}
.browse-link{color:var(--info);cursor:pointer;text-decoration:underline}

/* Alerts */
.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:16px;font-size:14px}
.alert-danger{background:#FEF2F2;color:#991B1B;border:1px solid #FCA5A5}
.alert-success{background:#F0FDF4;color:#166534;border:1px solid #86EFAC}
.alert-info{background:#EFF6FF;color:#1E40AF;border:1px solid #93C5FD}

/* Pagination */
.pagination{display:flex;gap:6px;justify-content:center;margin-top:24px;flex-wrap:wrap}
.pagination a{padding:7px 12px;border:1px solid var(--gray-200);border-radius:6px;font-size:14px;color:var(--navy)}
.pagination a.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.pagination a:hover:not(.active){background:var(--gray-100)}

/* Admin tables */
.admin-table{width:100%;border-collapse:collapse;font-size:14px}
.admin-table th{text-align:left;padding:10px 12px;border-bottom:2px solid var(--gray-200);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--gray-400)}
.admin-table td{padding:10px 12px;border-bottom:1px solid var(--gray-100);vertical-align:middle}
.admin-table tr:hover td{background:var(--gray-50)}
.row-inactive td{opacity:.5}
.status-badge{font-size:11px;padding:2px 8px;border-radius:10px;font-weight:600}
.status-badge.active{background:#D1FAE5;color:#065F46}
.status-badge.hidden{background:var(--gray-100);color:var(--gray-600)}
.status-badge.draft{background:#FEF3C7;color:#92400E}
.bulk-actions{display:flex;align-items:center;gap:10px;padding:10px 0;margin-bottom:10px}
.bulk-actions select{padding:7px 10px;border:1.5px solid var(--gray-200);border-radius:6px;font-size:13px}

/* Login */
.login-body{background:var(--navy);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-container{width:100%;max-width:420px}
.login-card{background:#fff;border-radius:12px;padding:36px;box-shadow:0 8px 32px rgba(0,0,0,.25)}
.login-logo{text-align:center;margin-bottom:24px}
.login-logo h1{font-size:22px;font-weight:700;color:var(--navy);margin-top:10px}
.login-logo p{color:var(--gray-400);font-size:13px}
.login-help{text-align:center;font-size:13px;color:var(--gray-400);margin-top:16px}

/* Search */
.search-bar-large{display:flex;align-items:center;gap:0;margin-bottom:20px;border:2px solid var(--gray-200);border-radius:8px;overflow:hidden}
.search-bar-large .ti-search{padding:0 12px;color:var(--gray-400);font-size:18px}
.search-bar-large input{flex:1;border:none;padding:12px 0;font-size:16px;outline:none}
.search-bar-large .btn{border-radius:0;padding:12px 20px}
.results-summary{font-size:13px;color:var(--gray-400);margin-bottom:12px}
mark{background:rgba(201,168,76,.3);border-radius:2px}
.search-suggestions{position:absolute;top:100%;left:0;right:0;background:#fff;border:1px solid var(--gray-200);border-radius:6px;z-index:300;box-shadow:var(--shadow)}
.search-suggestions a{display:flex;align-items:center;gap:8px;padding:9px 14px;font-size:14px;color:var(--gray-900)}
.search-suggestions a:hover{background:var(--gray-50)}

/* Misc */
.empty-msg{color:var(--gray-400);text-align:center;padding:32px;font-size:14px}
.active-filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:12px;font-size:13px}
.filter-tag{background:var(--gray-100);padding:4px 10px;border-radius:20px;color:var(--gray-600);display:flex;align-items:center;gap:4px}
.clear-all{color:var(--danger);font-size:12px}
.browse-controls{display:flex;align-items:center;gap:10px}
.view-toggle{display:flex;border:1px solid var(--gray-200);border-radius:6px;overflow:hidden}
.view-toggle button{background:none;border:none;padding:7px 10px;cursor:pointer;color:var(--gray-400)}
.view-toggle button.active{background:var(--navy);color:#fff}
.reports-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.full-width{grid-column:1 / -1}
.date-filter{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap;font-size:14px}
.date-filter input[type=date]{padding:7px 10px;border:1.5px solid var(--gray-200);border-radius:6px}
.admin-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.admin-nav-links{display:flex;flex-direction:column;gap:6px}
.admin-link{display:flex;align-items:center;gap:10px;padding:12px 14px;background:var(--gray-50);border-radius:6px;color:var(--navy);font-size:14px}
.admin-link:hover{background:var(--gray-100)}
.text-danger{color:var(--danger)!important}
.text-center{text-align:center}
.site-footer{background:var(--navy);color:rgba(255,255,255,.5);text-align:center;padding:20px;font-size:13px}
.site-footer a{color:var(--gold)}
.inline-search{padding:6px 10px;border:1px solid var(--gray-200);border-radius:6px;font-size:13px;margin-left:auto}
.upload-form{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);padding:24px;max-width:860px}
.progress-wrap{height:6px;background:var(--gray-200);border-radius:3px;overflow:hidden;margin-top:8px}
.progress-bar{height:100%;background:var(--gold);width:0%;transition:width .3s ease;border-radius:3px}

@media(max-width:768px){.sidebar{display:none}.main-content{padding:16px}.navbar-search{display:none}}