@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
:root{--navy:#0a1e3d;--navy-light:#0f2d5e;--blue:#1a56db;--blue-dark:#0f3d94;--blue-light:#edf2ff;--blue-pale:#f5f8ff;--white:#fff;--bg:#f4f6fb;--text:#0f1729;--text-sec:#475569;--text-muted:#8896ab;--border:#dce3ed;--border-light:#eef1f6;--green:#0d7c4a;--green-bg:#e6f5ee;--yellow:#a05e07;--yellow-bg:#fef6e7;--purple:#6730b3;--purple-bg:#f1ebfa;--red:#c02424;--red-bg:#fef0f0;--sidebar-w:264px;--radius:10px;--radius-lg:14px;--shadow-xs:0 1px 2px rgba(15,29,64,.04);--shadow-sm:0 1px 4px rgba(15,29,64,.06);--shadow:0 4px 16px rgba(15,29,64,.06);--tr:0.18s ease}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased}

/* LOGIN */
.login-page{min-height:100vh;display:flex;background:var(--navy);overflow:hidden}
.login-left{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:60px 40px;background:linear-gradient(160deg,var(--navy) 0%,var(--navy-light) 50%,var(--blue-dark) 100%);position:relative}
.login-left::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}
.login-brand{position:relative;z-index:1;text-align:center;color:var(--white);max-width:400px}
.brand-shield{width:80px;height:80px;background:rgba(255,255,255,0.1);border:2px solid rgba(255,255,255,0.2);border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:36px;margin:0 auto 24px;backdrop-filter:blur(10px)}
.login-brand h1{font-size:28px;font-weight:800;letter-spacing:-0.02em;margin-bottom:8px}
.login-brand .brand-sub{font-size:14px;color:rgba(255,255,255,0.55);line-height:1.7}
.brand-line{width:48px;height:3px;background:var(--blue);border-radius:2px;margin:20px auto 24px}
.brand-badges{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.brand-badge{padding:6px 14px;border-radius:50px;background:rgba(255,255,255,0.07);border:1px solid rgba(255,255,255,0.1);font-size:12px;font-weight:500;color:rgba(255,255,255,0.65)}
.login-right{width:480px;flex-shrink:0;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:60px;background:var(--white)}
.login-form-wrap{width:100%;max-width:360px}
.login-form-wrap h2{font-size:24px;font-weight:700;margin-bottom:4px}
.login-form-wrap .login-sub{color:var(--text-muted);font-size:14px;margin-bottom:32px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:12px;font-weight:700;color:var(--text-sec);margin-bottom:6px;text-transform:uppercase;letter-spacing:0.05em}
.form-input{width:100%;padding:13px 16px;border:1.5px solid var(--border);border-radius:8px;font-size:15px;font-family:inherit;outline:none;transition:border var(--tr),box-shadow var(--tr);background:var(--bg)}
.form-input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(26,86,219,0.1);background:var(--white)}
.btn-login{width:100%;padding:14px;background:var(--blue);color:var(--white);border:none;border-radius:8px;font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;transition:background var(--tr)}
.btn-login:hover{background:var(--blue-dark)}
.btn-login:disabled{opacity:0.5;cursor:not-allowed}
.error-box{background:var(--red-bg);color:var(--red);padding:10px 14px;border-radius:8px;font-size:13px;font-weight:500;margin-bottom:16px;display:none;border:1px solid rgba(192,36,36,0.08)}
.error-box.visible{display:block}
.login-footer{margin-top:40px;text-align:center;font-size:12px;color:var(--text-muted)}

/* SIDEBAR */
.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;background:var(--navy);display:flex;flex-direction:column;z-index:200;transition:transform 0.3s}
.sidebar-brand{padding:20px 20px 18px;border-bottom:1px solid rgba(255,255,255,0.07);display:flex;align-items:center;gap:12px;text-decoration:none}
.sb-icon{width:40px;height:40px;border-radius:10px;background:var(--blue);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.sb-text h2{font-size:14px;font-weight:700;color:var(--white);line-height:1.2}
.sb-text span{font-size:11px;color:rgba(255,255,255,0.4)}
.sidebar-nav{flex:1;padding:16px 12px;overflow-y:auto}
.nav-section{margin-bottom:22px}
.nav-label{font-size:10px;font-weight:700;color:rgba(255,255,255,0.28);text-transform:uppercase;letter-spacing:0.1em;padding:0 12px;margin-bottom:8px}
.nav-item{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:8px;color:rgba(255,255,255,0.5);text-decoration:none;font-size:13.5px;font-weight:500;transition:all var(--tr);margin-bottom:2px}
.nav-item:hover{background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.85)}
.nav-item.active{background:var(--blue);color:var(--white);font-weight:600;box-shadow:0 2px 8px rgba(26,86,219,0.3)}
.ni{width:18px;text-align:center;font-size:15px;flex-shrink:0;opacity:0.8}
.nav-item.active .ni{opacity:1}
.sidebar-footer{padding:14px 12px;border-top:1px solid rgba(255,255,255,0.06)}
.btn-logout-side{display:flex;align-items:center;gap:10px;width:100%;padding:10px 12px;border-radius:8px;background:rgba(192,36,36,0.12);color:#f87171;border:none;cursor:pointer;font-size:13px;font-weight:600;font-family:inherit;transition:background var(--tr)}
.btn-logout-side:hover{background:rgba(192,36,36,0.2)}

/* MAIN */
.main{margin-left:var(--sidebar-w);min-height:100vh}
.topbar{padding:18px 32px;display:flex;align-items:center;justify-content:space-between;background:var(--white);border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:100}
.topbar h1{font-size:20px;font-weight:700;letter-spacing:-0.01em}
.topbar-left{display:flex;align-items:center;gap:14px}
.hamburger{display:none;background:none;border:none;font-size:20px;cursor:pointer;color:var(--text);padding:4px}
.page-body{padding:28px 32px}
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin-bottom:28px}
.stat-card{background:var(--white);border-radius:var(--radius-lg);padding:22px 24px;box-shadow:var(--shadow-xs);border:1px solid var(--border-light);transition:transform var(--tr),box-shadow var(--tr)}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.stat-label{font-size:11px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:8px}
.stat-value{font-size:32px;font-weight:800;color:var(--blue);letter-spacing:-0.02em}
.stat-card.green .stat-value{color:var(--green)}
.stat-card.yellow .stat-value{color:var(--yellow)}
.stat-card.purple .stat-value{color:var(--purple)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.card{background:var(--white);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-xs);border:1px solid var(--border-light)}
.card-title{font-size:14px;font-weight:700;margin-bottom:16px;text-transform:uppercase;letter-spacing:0.03em}
.table-card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);border:1px solid var(--border-light);overflow:hidden}
.table-card table{width:100%;border-collapse:collapse;font-size:13px}
.table-card thead th{text-align:left;padding:13px 18px;background:var(--blue-pale);color:var(--text-sec);font-weight:700;font-size:11px;text-transform:uppercase;letter-spacing:0.05em;border-bottom:1px solid var(--border)}
.table-card tbody td{padding:12px 18px;border-bottom:1px solid var(--border-light)}
.table-card tbody tr:last-child td{border-bottom:none}
.table-card tbody tr:hover td{background:var(--blue-pale)}
.badge{display:inline-block;padding:3px 10px;border-radius:6px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:0.04em}
.badge-basic{background:var(--blue-light);color:var(--blue)}
.badge-intermediate{background:var(--green-bg);color:var(--green)}
.badge-advanced{background:var(--yellow-bg);color:var(--yellow)}
.badge-professional{background:var(--purple-bg);color:var(--purple)}
.correct-badge{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:6px;font-size:12px;font-weight:700;background:var(--green-bg);color:var(--green)}
.cert-yes{color:var(--green);font-weight:600} .cert-no{color:var(--text-muted)}
.text-truncate{max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.empty-state{text-align:center;padding:40px;color:var(--text-muted);font-size:14px}
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;border:none;transition:all var(--tr);text-decoration:none;font-family:inherit}
.btn-primary{background:var(--blue);color:var(--white)} .btn-primary:hover{background:var(--blue-dark)}
.btn-green{background:var(--green);color:var(--white)} .btn-green:hover{background:#096138}
.btn-danger{background:var(--red-bg);color:var(--red);padding:6px 12px;font-size:12px} .btn-danger:hover{background:#fde2e2}
.btn-secondary{background:var(--bg);color:var(--text-sec)} .btn-secondary:hover{background:var(--border)}
.form-card{background:var(--white);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-xs);border:1px solid var(--border-light);max-width:720px}
.form-control{width:100%;padding:11px 14px;border:1.5px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;outline:none;transition:all var(--tr);background:var(--white)}
.form-control:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(26,86,219,0.08)}
textarea.form-control{resize:vertical;min-height:80px}
.options-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.option-item{display:flex;align-items:center;gap:8px}
.option-item .letter{width:34px;height:34px;line-height:34px;text-align:center;background:var(--blue-light);color:var(--blue);border-radius:8px;font-weight:700;font-size:13px;flex-shrink:0}
.radio-group{display:flex;gap:20px}
.radio-item{display:flex;align-items:center;gap:6px;cursor:pointer;font-size:14px;font-weight:500}
.radio-item input[type="radio"]{width:18px;height:18px;accent-color:var(--blue)}
.btn-row{display:flex;gap:12px;margin-top:28px}
.filters{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.filter-select{padding:8px 14px;border:1.5px solid var(--border);border-radius:8px;font-size:13px;background:var(--white);cursor:pointer;outline:none;font-family:inherit;color:var(--text-sec)}
.filter-select:focus{border-color:var(--blue)}
.pagination{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-top:1px solid var(--border-light)}
.pag-info{font-size:12px;color:var(--text-muted);font-weight:500}
.pag-btns{display:flex;gap:4px}
.pag-btn{padding:6px 11px;border-radius:6px;border:1px solid var(--border);background:var(--white);font-size:13px;cursor:pointer;font-family:inherit;color:var(--text-sec);transition:all var(--tr)}
.pag-btn:hover{background:var(--bg)} .pag-btn.active{background:var(--blue);color:var(--white);border-color:var(--blue)}
.spinner-sm{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,0.3);border-top-color:#fff;border-radius:50%;animation:spin 0.6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.4);z-index:199} .sidebar-overlay.visible{display:block}
@media(max-width:768px){.sidebar{transform:translateX(-100%)}.sidebar.open{transform:translateX(0)}.main{margin-left:0}.hamburger{display:block}.grid-2{grid-template-columns:1fr}.options-grid{grid-template-columns:1fr}.stats-row{grid-template-columns:1fr 1fr}.page-body{padding:20px 16px}.topbar{padding:14px 16px}.login-left{display:none}.login-right{width:100%}}
@media(max-width:480px){.stats-row{grid-template-columns:1fr}}

/* ═══ MODAL ═══ */
.modal-overlay{position:fixed;inset:0;background:rgba(10,30,61,0.55);display:flex;align-items:center;justify-content:center;z-index:999;padding:16px}
.modal-box{background:var(--white);border-radius:var(--radius-lg);padding:28px 28px 24px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px rgba(10,30,61,0.18)}
.modal-lg{max-width:640px}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.modal-header h3{font-size:17px;font-weight:700}
.modal-close{background:var(--bg);border:none;border-radius:8px;width:32px;height:32px;font-size:16px;cursor:pointer;color:var(--text-sec);display:flex;align-items:center;justify-content:center}
.modal-close:hover{background:var(--border)}

/* ═══ FILE DROP ZONE ═══ */
.file-drop-zone{border:2px dashed var(--border);border-radius:10px;padding:32px;text-align:center;cursor:pointer;transition:all var(--tr);background:var(--bg)}
.file-drop-zone:hover{border-color:var(--blue);background:var(--blue-light)}
.file-drop-icon{font-size:32px;margin-bottom:8px}
.file-drop-text{font-size:13px;color:var(--text-muted);font-weight:500}

/* ═══ CATEGORY BADGE ═══ */
.cat-badge{display:inline-block;padding:3px 9px;border-radius:6px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:0.03em;background:var(--blue-light);color:var(--blue)}

/* ═══ VIDEO GRID ═══ */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.video-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-xs);border:1px solid var(--border-light);transition:transform var(--tr),box-shadow var(--tr)}
.video-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.video-inactive{opacity:0.55}
.video-thumb{position:relative;aspect-ratio:16/9;cursor:pointer;overflow:hidden;background:#0f1729}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.3s}
.video-thumb:hover img{transform:scale(1.04)}
.play-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.3);color:#fff;font-size:36px;opacity:0;transition:opacity 0.2s}
.video-thumb:hover .play-overlay{opacity:1}
.video-info{padding:14px 16px}
.video-title{font-size:14px;font-weight:700;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.video-desc{font-size:12px;color:var(--text-muted);line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-actions{display:flex;gap:8px;margin-top:8px}

/* ═══ ANNOUNCEMENTS ═══ */
.ann-list{display:flex;flex-direction:column;gap:12px}
.ann-row{display:flex;gap:12px;align-items:flex-start}
.ann-row-actions{display:flex;flex-direction:column;gap:8px;flex-shrink:0}
.ann-card{display:flex;gap:14px;padding:16px 18px;border-radius:var(--radius-lg);border-left:4px solid transparent}
.ann-card.info{background:#edf6ff;border-color:var(--blue)}
.ann-card.warning{background:#fef6e7;border-color:var(--yellow)}
.ann-card.success{background:#e6f5ee;border-color:var(--green)}
.ann-card.urgent{background:var(--red-bg);border-color:var(--red)}
.ann-type-icon{font-size:22px;flex-shrink:0;margin-top:1px}
.ann-title{font-size:14px;font-weight:700;margin-bottom:4px}
.ann-content{font-size:13px;color:var(--text-sec);line-height:1.6;white-space:pre-wrap}
.ann-meta{display:flex;gap:8px;align-items:center;margin-top:8px;flex-wrap:wrap}
.ann-preview{margin:16px 0;background:var(--bg);border-radius:10px;padding:14px}
.ann-preview-label{font-size:11px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:10px}

@media(max-width:768px){.video-grid{grid-template-columns:1fr}.ann-row{flex-direction:column}.ann-row-actions{flex-direction:row;width:100%}}