/* ARU DBA learning materials — brand green from the ARU logo */
:root{
  --brand:#37ad49;--brand-dark:#26843a;--brand-soft:#eaf6eb;--brand-line:#cfe8d3;
  --gold:#b08c00;--gold-soft:#fff8d9;
  --ink:#1f2933;--ink-2:#4a5560;--muted:#7a8590;--line:#e4e8e6;--line-2:#eef1ef;
  --paper:#f5f7f5;--white:#fff;
  --danger:#b4433b;--danger-soft:#fdeeec;
  --radius:12px;--radius-sm:8px;
  --shadow:0 1px 2px rgba(20,40,30,.05),0 4px 14px rgba(20,40,30,.05);
  --shadow-lg:0 2px 4px rgba(20,40,30,.06),0 12px 30px rgba(20,40,30,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.5 'DM Sans',system-ui,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3,p{margin:0}
button,input,textarea{font:inherit;color:inherit}
.icon{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.hidden{display:none!important}

/* Mode visibility: staff tools only render in staff mode */
html:not(.admin-mode) .staff-only{display:none!important}
.admin-mode .student-only{display:none!important}
.drawer:not(.open){display:none!important}
.semester.unavailable{display:none}
.admin-mode .semester.unavailable{display:block}
.semester.filtered-out{display:none!important}

/* Sidebar */
.sidebar{position:fixed;inset:0 auto 0 0;width:248px;background:var(--white);border-right:1px solid var(--line);padding:24px 18px;display:flex;flex-direction:column;z-index:5}
.brand{display:block}
.brand-logo{display:block;width:100%;max-width:200px;height:auto}
.sidebar-label{font-size:10px;letter-spacing:1.4px;text-transform:uppercase;color:var(--muted);font-weight:700;margin:44px 10px 10px}
.nav-item{padding:11px 12px;color:var(--ink-2);text-decoration:none;border-radius:var(--radius-sm);font-weight:600;display:flex;gap:11px;align-items:center}
.nav-item.active{background:var(--brand-soft);color:var(--brand-dark)}
.sidebar-foot{margin-top:auto;border-top:1px solid var(--line);padding:16px 6px 2px;font-size:12px;font-weight:600;color:var(--ink-2)}
.sidebar-foot small{display:block;color:var(--muted);margin:4px 0 0 16px;font-size:11px;font-weight:500}
.status-dot{width:8px;height:8px;background:var(--brand);border-radius:50%;display:inline-block;margin-right:6px;box-shadow:0 0 0 3px var(--brand-soft)}

/* Top bar */
.main{margin-left:248px;min-height:100vh}
.topbar{position:sticky;top:0;z-index:4;height:66px;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 32px}
.crumb{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.crumb span{padding:0 8px;color:#c2c8c5}.crumb b{color:var(--ink);font-weight:600}
.topbar-right{display:flex;align-items:center;gap:18px}
.view-switch{display:flex;background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:3px}
.view-switch button{display:flex;align-items:center;gap:6px;border:0;background:transparent;padding:6px 13px;border-radius:999px;font-size:12px;font-weight:600;color:var(--muted);cursor:pointer;transition:.15s}
.view-switch button .icon{width:15px;height:15px}
.view-switch button.active{background:var(--white);color:var(--brand-dark);box-shadow:0 1px 3px rgba(0,0,0,.1)}
.admin-mode .view-switch button.active{background:var(--ink);color:#fff}
.profile{display:flex;align-items:center;gap:10px}
.profile-avatar{width:36px;height:36px;background:var(--brand-soft);border-radius:50%;display:grid;place-items:center;color:var(--brand-dark);font-weight:700;font-size:12px}
.admin-mode .profile-avatar{background:var(--ink);color:#fff}
.profile-text strong,.profile-text small{display:block}
.profile-text strong{font-size:13px}
.profile-text small{font-size:11px;color:var(--muted)}

/* Page */
.page-wrap{max-width:1160px;padding:32px 32px 24px;margin:auto}
.staff-banner{display:flex;align-items:flex-start;gap:10px;background:#1f2933;color:#e7ece9;border-radius:var(--radius);padding:12px 16px;margin-bottom:22px;font-size:13px}
.staff-banner .icon{color:#8fd99b;margin-top:1px}
.staff-banner strong{color:#fff}
.hero{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.eyebrow{color:var(--brand-dark);font-size:11px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase}
h1{font:800 32px/1.15 Manrope,sans-serif;margin:6px 0 6px;letter-spacing:-.8px}
.hero p{color:var(--muted);font-size:14px}
.current-pill{display:flex;align-items:center;gap:11px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:10px 16px 10px 10px;box-shadow:var(--shadow);white-space:nowrap}
.current-icon{width:38px;height:38px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center}
.current-pill small{display:block;font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--muted);font-weight:700}
.current-pill strong{font:700 15px Manrope,sans-serif}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:22px}
.stat-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;padding:14px 16px;gap:12px;box-shadow:var(--shadow)}
.stat-icon{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-dark)}
.stat-icon.gold{background:var(--gold-soft);color:var(--gold)}
.stat-card strong{display:block;font:800 20px/1.1 Manrope,sans-serif}
.stat-card span:not(.stat-icon){display:block;font-size:12px;color:var(--muted);line-height:1.35;margin-top:2px}
.stat-note strong{font-size:13px}
.stat-warn{border-color:#f1e2a8;background:#fffcf0}
.stat-warn .stat-icon{background:var(--gold-soft);color:var(--gold)}

/* Toast */
.toast{display:flex;align-items:center;gap:10px;border-radius:var(--radius-sm);padding:11px 12px 11px 14px;margin-bottom:18px;font-size:13px;font-weight:500;transition:opacity .4s,transform .4s}
.toast.success{background:var(--brand-soft);color:#1f6d30;border:1px solid var(--brand-line)}
.toast.error{background:var(--danger-soft);color:var(--danger);border:1px solid #f4cfca}
.toast span{flex:1}
.toast-close{border:0;background:transparent;cursor:pointer;color:inherit;opacity:.6;display:grid;padding:2px}
.toast-close:hover{opacity:1}
.toast.fade{opacity:0;transform:translateY(-4px);pointer-events:none}

/* Panels */
.panel,.aims{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.aims{margin-bottom:28px}
.aims-heading{display:flex;gap:12px;align-items:center;padding:14px 18px;cursor:pointer;list-style:none}
.aims-heading::-webkit-details-marker,.semester-head::-webkit-details-marker,.subject-summary::-webkit-details-marker{display:none}
.aims-star{height:36px;width:36px;border-radius:10px;background:var(--gold-soft);color:var(--gold);display:grid;place-items:center}
.aims-heading h2{font:700 15px Manrope,sans-serif}
.aims-heading p{font-size:12px;color:var(--muted)}
.chevron{margin-left:auto;color:var(--muted);display:grid;transition:transform .2s}
details[open]>summary>.chevron{transform:rotate(180deg)}
.aims-content{padding:0 18px 18px}
.aims-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 26px;list-style:none;padding:14px 0 0;margin:0;border-top:1px solid var(--line-2)}
.aims-grid li{font-size:13px;line-height:1.6;color:var(--ink-2);padding-left:16px;position:relative}
.aims-grid li:before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.aims-editor{display:flex;flex-direction:column;gap:10px;border-top:1px solid var(--line-2);margin-top:16px;padding-top:16px}
.aims-editor label{font-size:12px;font-weight:700;color:var(--ink-2)}
.aims-editor textarea{display:block;width:100%;margin-top:5px;padding:9px 11px;border:1px solid var(--line);border-radius:var(--radius-sm);font-size:13px;line-height:1.5;resize:vertical}
.aims-editor .button{align-self:flex-start}

/* Section heading + search */
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:14px}
.section-heading h2{font:800 19px Manrope,sans-serif}
.section-heading p{color:var(--muted);font-size:13px}
.search{display:flex;align-items:center;gap:8px;background:var(--white);border:1px solid var(--line);border-radius:999px;padding:0 14px;width:300px;color:var(--muted);transition:.15s}
.search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.search input{border:0;outline:0;background:transparent;padding:10px 0;width:100%;font-size:13px}
.no-results{background:var(--white);border:1px dashed var(--line);border-radius:var(--radius);padding:22px;text-align:center;color:var(--muted);margin-bottom:14px}

/* Semesters */
.semester-list{display:grid;gap:14px}
.semester{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:box-shadow .2s}
.semester[open]{box-shadow:var(--shadow-lg)}
.semester-head{display:flex;align-items:center;gap:13px;padding:16px 20px;cursor:pointer;list-style:none;border-radius:var(--radius)}
.semester-head:hover{background:#fafbfa}
.semester-badge{height:40px;width:40px;flex:0 0 40px;border-radius:11px;background:var(--brand-soft);color:var(--brand-dark);display:grid;place-items:center}
.semester-badge.is-current{background:var(--brand);color:#fff}
.unavailable .semester-badge{background:#f0f2f1;color:#98a19c}
.semester-title{min-width:0}
.semester-title h3{font:700 16px Manrope,sans-serif}
.semester-title span{font-size:12px;color:var(--muted)}
.access-badge{margin-left:auto;font-size:11px;font-weight:700;white-space:nowrap;border-radius:999px;padding:4px 10px;background:var(--brand-soft);color:var(--brand-dark)}
.access-badge.current{background:var(--brand);color:#fff}
.access-badge.locked{background:#f0f2f1;color:#6f7873}
.access-badge+.chevron{margin-left:0}
.semester-body{padding:4px 20px 20px;border-top:1px solid var(--line-2)}

/* Staff toolbar + drawers */
.staff-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:14px 0 4px}
.toolbar-right{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.toolbar-right form{margin:0}
.drawer{display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px;background:#f8faf8;border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px;margin:10px 0 4px;animation:drop .18s ease-out}
@keyframes drop{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.drawer-actions{display:flex;gap:6px;margin-left:auto}
.field{display:flex;flex-direction:column;gap:5px;font-size:12px;font-weight:700;color:var(--ink-2)}
.field em{font-style:normal;font-weight:500;color:var(--muted)}
.field.grow{flex:1 1 220px}
.field.code{flex:0 1 140px}
.field input,.add-semester input{border:1px solid #d9dfdb;background:var(--white);border-radius:var(--radius-sm);padding:9px 11px;font-size:13px;font-weight:500;outline:0;transition:.15s;min-width:0}
.field input:focus,.add-semester input:focus,.aims-editor textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);outline:0}
.field input[type=file]{padding:6px;font-size:12px}

/* Buttons */
.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;border-radius:var(--radius-sm);padding:8px 13px;white-space:nowrap;font-size:13px;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s,color .15s}
.button .icon{width:16px;height:16px}
.button.primary{background:var(--brand);color:#fff}
.button.primary:hover{background:var(--brand-dark)}
.button.ghost{background:var(--white);border-color:var(--line);color:var(--ink-2)}
.button.ghost:hover{border-color:#c9d1cc;background:#fafbfa;color:var(--ink)}
.button.danger{background:var(--white);border-color:#f0d6d2;color:var(--danger)}
.button.danger:hover{background:var(--danger-soft)}
.button.icon-only{padding:8px}
.button.full{width:100%}
.button.busy{opacity:.65;cursor:progress}
.link-button{display:inline-flex;align-items:center;gap:5px;border:0;background:transparent;padding:4px 2px;font-size:12px;font-weight:600;color:var(--ink-2);cursor:pointer}
.link-button .icon{width:15px;height:15px}
.link-button:hover{color:var(--brand-dark)}
.link-button.danger-text:hover{color:var(--danger)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* Courses */
.subject-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:14px;align-items:start}
.subject-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--white);min-width:0;transition:border-color .15s,box-shadow .15s}
.subject-card:hover{border-color:var(--brand-line)}
.subject-card[open]{grid-column:1/-1;border-color:var(--brand-line);box-shadow:var(--shadow)}
.subject-summary{display:flex;align-items:center;gap:12px;padding:14px;cursor:pointer;list-style:none;border-radius:var(--radius)}
.subject-icon{width:36px;height:36px;flex:0 0 36px;border-radius:10px;background:var(--brand-soft);color:var(--brand-dark);display:grid;place-items:center}
.course-summary{display:flex;flex:1;min-width:0;flex-direction:column;gap:3px}
.course-code{font-size:11px;font-weight:700;letter-spacing:.4px;color:var(--brand-dark)}
.course-summary strong{font:700 14px/1.4 Manrope,sans-serif}
.count-pill{font-size:11px;font-weight:700;color:var(--brand-dark);background:var(--brand-soft);border-radius:999px;padding:3px 9px;white-space:nowrap}
.count-pill.empty-pill{color:var(--muted);background:#f0f2f1}
.count-pill+.chevron{margin-left:0}
.subject-content{padding:0 14px 14px}
.course-tools{display:flex;gap:14px;align-items:center;padding:0 0 8px;margin-top:-4px}
.course-tools form{margin:0}

/* Materials */
.material-list{border-top:1px solid var(--line-2)}
.material-row{display:flex;align-items:center;gap:12px;padding:11px 4px;border-bottom:1px solid var(--line-2)}
.material-row:hover{background:#fafbfa}
.material-row form{margin:0}
.file-icon{width:38px;height:42px;flex:0 0 38px;border-radius:7px;display:grid;place-items:center;font-size:9px;font-weight:800;letter-spacing:.3px;background:#eef1f0;color:#5d6a64}
.file-icon.pdf{background:#fdeceb;color:#c2453b}
.file-icon.doc{background:#e8f0fc;color:#2c62b8}
.file-icon.ppt{background:#fdf0e6;color:#c4621d}
.file-icon.xls{background:#e6f5ea;color:#1f7a3a}
.material-info{min-width:0;flex:1}
.material-info strong{font-size:14px;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.material-info small{display:block;font-size:12px;color:var(--muted)}
.download{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:var(--radius-sm);background:var(--brand);color:#fff;text-decoration:none;font-size:12px;font-weight:600;transition:background .15s}
.download .icon{width:16px;height:16px}
.download:hover{background:var(--brand-dark)}
.icon-button{display:grid;width:32px;height:32px;place-items:center;border:1px solid var(--line);background:var(--white);border-radius:var(--radius-sm);color:var(--ink-2);cursor:pointer;padding:0}
.icon-button .icon{width:16px;height:16px}
.icon-button:hover{border-color:#c9d1cc;color:var(--ink)}
.icon-button.danger{color:var(--danger)}
.icon-button.danger:hover{background:var(--danger-soft);border-color:#f0d6d2}
.empty{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;padding:18px 4px}
.empty.small{padding:14px 4px}
.empty.panel{padding:22px}

/* Course sections: videos + documents */
.block-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:14px 0 8px}
.block-head h4{display:flex;align-items:center;gap:7px;margin:0;font:700 13px Manrope,sans-serif;text-transform:uppercase;letter-spacing:.6px;color:var(--ink-2)}
.block-head h4 .icon{width:16px;height:16px;color:var(--brand-dark)}
.muted-count{font:600 11px 'DM Sans',sans-serif;background:#f0f2f1;color:var(--muted);border-radius:999px;padding:1px 8px;letter-spacing:0}
.block-head-actions{display:flex;align-items:center;gap:6px}
.button.small{padding:6px 11px;font-size:12px}
.slider-arrow{width:32px;height:32px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;background:var(--white);color:var(--ink-2);cursor:pointer;padding:0;transition:.15s}
.slider-arrow .icon{width:16px;height:16px;transform:rotate(90deg)}
.slider-arrow.next .icon{transform:rotate(-90deg)}
.slider-arrow:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft)}
.pills{display:flex;gap:5px;align-items:center}
.video-pill{display:inline-flex;align-items:center;gap:3px;background:#fdecea;color:#c2392f}
.video-pill .icon{width:11px;height:11px;fill:currentColor;stroke:none}

.video-slider{position:relative;margin:0 -4px}
.video-track{display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;padding:2px 4px 8px;scrollbar-width:thin}
.video-card{flex:0 0 min(300px,88%);scroll-snap-align:start;display:flex;align-items:center;gap:12px;padding:8px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--white);transition:border-color .15s,box-shadow .15s}
.video-card:hover{border-color:var(--brand-line);box-shadow:var(--shadow)}
.video-thumb{position:relative;flex:0 0 112px;width:112px;aspect-ratio:16/9;border:0;margin:0;padding:0;border-radius:6px;overflow:hidden;cursor:pointer;color:#fff;background:#1f2933 center/cover no-repeat;text-decoration:none}
.video-thumb:after{content:"";position:absolute;inset:0;background:rgba(0,0,0,.18);transition:background .15s}
.video-thumb:hover:after{background:rgba(0,0,0,.05)}
.video-thumb.external{background:linear-gradient(135deg,#37ad49,#1f2933)}
.play-badge{position:absolute;left:50%;top:50%;z-index:1;transform:translate(-50%,-50%);width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.95);color:var(--brand-dark);display:grid;place-items:center;box-shadow:0 2px 8px rgba(0,0,0,.3);transition:transform .15s}
.play-badge .icon{width:13px;height:13px;fill:currentColor;stroke:none;margin-left:2px}
.video-thumb:hover .play-badge{transform:translate(-50%,-50%) scale(1.12)}
.video-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}
.video-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;border:0;background:none;padding:0;text-align:left;font:600 13px/1.35 'DM Sans',sans-serif;color:var(--ink);cursor:pointer;text-decoration:none}
.video-title:hover{color:var(--brand-dark)}
.video-actions{display:flex;align-items:center;gap:4px}
.video-actions form{margin:0;display:flex}
.video-source{font-size:11px;color:var(--muted);margin-right:auto}
.mini-button{width:26px;height:26px;display:grid;place-items:center;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--muted);cursor:pointer;padding:0}
.mini-button .icon{width:14px;height:14px}
.mini-button:hover{background:#f2f4f3;color:var(--ink)}
.mini-button.danger:hover{background:var(--danger-soft);color:var(--danger)}
.admin-mode .mini-button.staff-only{display:grid!important}

/* Pop-up player */
.video-modal{width:min(960px,94vw,calc((100vh - 90px) * 16 / 9));max-width:none;padding:0;border:0;border-radius:14px;background:#0f1512;color:#fff;box-shadow:0 30px 80px rgba(0,0,0,.45);overflow:hidden}
.video-modal::backdrop{background:rgba(10,16,13,.72);backdrop-filter:blur(3px)}
.video-modal[open]{animation:modal-in .2s ease-out}
@keyframes modal-in{from{opacity:0;transform:scale(.97)}to{opacity:1;transform:none}}
.video-modal-head{display:flex;align-items:center;gap:12px;padding:10px 10px 10px 18px}
.video-modal-head strong{flex:1;min-width:0;font:700 14px Manrope,sans-serif;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.video-modal-link{font-size:12px;color:#9fe0aa;text-decoration:none;white-space:nowrap}
.video-modal-link:hover{text-decoration:underline}
.video-modal-close{width:36px;height:36px;display:grid;place-items:center;border:0;border-radius:50%;background:rgba(255,255,255,.1);color:#fff;cursor:pointer}
.video-modal-close:hover{background:rgba(255,255,255,.2)}
.video-modal-player{aspect-ratio:16/9;background:#000}
.video-modal-player iframe{display:block;width:100%;height:100%;border:0}
body.modal-open{overflow:hidden}
@media (max-width:640px){
  .video-card{flex-basis:88%}
  .video-modal{width:100%;max-width:100%;max-height:100vh;border-radius:0;margin:auto 0;inset:0}
  .video-modal-link{display:none}
}
.video-form{flex-direction:column;align-items:stretch}
.drawer-hint{font-size:12px;color:var(--muted)}
.video-rows{display:flex;flex-direction:column;gap:8px}
.video-row{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}
.video-row .icon-button{margin-bottom:2px}
.drawer-actions.spread{width:100%;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-left:0}

/* Upload */
.upload-form{display:flex;flex-direction:column;gap:10px;margin-top:14px;padding:14px;border-radius:var(--radius-sm);background:#f8faf8;border:1px solid var(--line)}
.upload-title{display:flex;align-items:center;gap:7px;font:700 14px Manrope,sans-serif;color:var(--ink)}
.upload-title .icon{color:var(--brand-dark)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:-2px}
.chip{border:1px solid var(--line);background:var(--white);border-radius:999px;padding:4px 10px;font-size:12px;color:var(--ink-2);cursor:pointer;transition:.15s}
.chip:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft)}
.dropzone{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;text-align:center;border:2px dashed #cfd8d3;border-radius:var(--radius-sm);background:var(--white);padding:18px 14px;cursor:pointer;transition:.15s}
.dropzone:hover,.dropzone.dragging{border-color:var(--brand);background:var(--brand-soft)}
.dropzone.has-file{border-style:solid;border-color:var(--brand);background:var(--brand-soft)}
.dropzone input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}
.dz-icon{color:var(--brand-dark)}
.dz-icon .icon{width:24px;height:24px}
.dz-text{font-size:13px;color:var(--ink-2);word-break:break-all}
.dz-text strong{color:var(--brand-dark)}
.dropzone small{font-size:11px;color:var(--muted)}

/* Add semester (the "+" from the meeting) */
.add-semester{display:flex;align-items:center;gap:14px;flex-wrap:wrap;border:2px dashed #cfd8d3;border-radius:var(--radius);padding:16px 20px;background:rgba(255,255,255,.6);transition:.15s}
.add-semester:hover,.add-semester:focus-within{border-color:var(--brand);background:var(--white)}
.add-icon{width:40px;height:40px;border-radius:11px;background:var(--brand-soft);color:var(--brand-dark);display:grid;place-items:center}
.add-text{flex:1 1 200px}
.add-text strong{display:block;font:700 15px Manrope,sans-serif}
.add-text span{font-size:12px;color:var(--muted)}
.add-semester input{width:260px}

.flash-target{animation:glow 1.6s ease-out}
@keyframes glow{0%{box-shadow:0 0 0 4px rgba(55,173,73,.35)}100%{box-shadow:0 0 0 0 rgba(55,173,73,0)}}
footer{text-align:center;color:#9aa49f;font-size:12px;padding:30px 0 6px}
footer span{padding:0 6px}

/* Collapsible sidebar */
.sidebar,.main{transition:width .2s ease,margin-left .2s ease,padding .2s ease}
.sidebar{overflow:hidden}
.nav-item .icon{width:20px;height:20px}
.nav-text{white-space:nowrap}
.sidebar-foot{display:flex;align-items:baseline;gap:0}
.sidebar-foot .status-dot{flex:0 0 8px}
.sidebar-toggle{display:grid;place-items:center;width:36px;height:36px;flex:0 0 36px;margin-right:-6px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--white);color:var(--ink-2);cursor:pointer;transition:.15s}
.sidebar-toggle:hover{border-color:#c9d1cc;color:var(--brand-dark);background:var(--brand-soft)}
.topbar{justify-content:flex-start}
.topbar-right{margin-left:auto}
@media (min-width:641px){
  .sidebar-collapsed .sidebar{width:76px;padding:24px 14px}
  .sidebar-collapsed .main{margin-left:76px}
  .sidebar-collapsed .brand-logo{width:46px;height:46px;max-width:none;object-fit:cover;object-position:left center;margin:0 auto}
  .sidebar-collapsed .sidebar-label{visibility:hidden}
  .sidebar-collapsed .nav-text{display:none}
  .sidebar-collapsed .nav-item{justify-content:center;padding:11px 0}
  .sidebar-collapsed .sidebar-foot{justify-content:center;padding:16px 0 2px}
  .sidebar-collapsed .status-dot{margin:0}
}

/* Responsive */
@media (max-width:1000px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .profile-text{display:none}
}
@media (max-width:860px){
  .sidebar{width:208px}.main{margin-left:208px}
  .page-wrap{padding:26px 20px}.topbar{padding:0 20px}
  .subject-grid{grid-template-columns:1fr}
  .hero{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .sidebar{position:static;width:auto;flex-direction:row;align-items:center;padding:10px 16px;border-right:0;border-bottom:1px solid var(--line)}
  .brand-logo{max-width:160px}
  .sidebar-label,.nav-item,.sidebar-foot{display:none}
  .main{margin:0}
  .topbar{height:56px;padding:0 16px}
  .crumb{display:none}.topbar-right{margin-left:auto}.profile{display:none}.sidebar-toggle{display:none}
  .page-wrap{padding:20px 16px}
  h1{font-size:26px}
  .stats{gap:8px}.stat-card{padding:12px;gap:10px}.stat-note{grid-column:1/-1}
  .section-heading{flex-direction:column;align-items:stretch}
  .search{width:100%}
  .semester-head{flex-wrap:wrap;padding:14px}
  .semester-body{padding:4px 14px 14px}
  .access-badge{order:3;margin-left:53px}
  .semester-head .chevron{margin-left:auto}
  .aims-grid{grid-template-columns:1fr}
  .staff-toolbar{flex-direction:column;align-items:stretch}
  .toolbar-right{justify-content:flex-start}
  .material-row{flex-wrap:wrap}
  .material-info{flex-basis:calc(100% - 50px)}
  .download{margin-left:50px}
  .download span{display:inline}
  .drawer-actions{width:100%;justify-content:flex-end}
  .add-semester input{width:100%}
  .add-semester .button{width:100%}
}
.pills+.chevron{margin-left:0}
.upload-form+.block-head,.material-list+.block-head{margin-top:22px;padding-top:16px;border-top:1px solid var(--line-2)}