/* Kno v3 — Dashboard (Dark) */
.dash-layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:50;transition:transform var(--transition)}
.sidebar-header{padding:20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}
.sidebar-logo{display:flex;align-items:center;gap:10px;font-size:1.1rem;font-weight:800}
.sidebar-close{display:none}
.sidebar-nav{flex:1;padding:8px 12px;overflow-y:auto}
.sidebar-section-label{padding:10px 14px 4px;font-size:0.68rem;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-muted)}
.sidebar-nav-item{display:flex;align-items:center;gap:12px;padding:9px 14px;border-radius:var(--radius-md);font-size:0.85rem;font-weight:500;color:var(--text-secondary);transition:var(--transition);margin-bottom:1px}
.sidebar-nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}
.sidebar-nav-item.active{background:var(--bg-tertiary);color:var(--text-primary);font-weight:600;border:1px solid var(--border)}
.sidebar-divider{height:1px;background:var(--border);margin:6px 4px}
.sidebar-footer{padding:14px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:3px}
.sidebar-user{display:flex;align-items:center;gap:10px;padding:10px 14px;font-size:0.82rem;font-weight:600;border-radius:var(--radius-md);background:var(--bg-hover);margin-bottom:6px}
.sidebar-footer-btn{display:flex;align-items:center;gap:10px;padding:7px 14px;border-radius:var(--radius-md);font-size:0.78rem;color:var(--text-muted);transition:var(--transition);width:100%;text-align:left}
.sidebar-footer-btn:hover{color:var(--text-primary);background:var(--bg-hover)}

.dash-main{margin-left:var(--sidebar-width);flex:1;display:flex;flex-direction:column;min-height:100vh}
.dash-topbar{display:flex;align-items:center;gap:12px;padding:14px 28px;border-bottom:1px solid var(--border);background:var(--bg-secondary);position:sticky;top:0;z-index:10}
.dash-menu-toggle{display:none}
.dash-title{font-weight:700;font-size:0.95rem}
.dash-content{flex:1;padding:28px;overflow-y:auto}

.page-header{display:flex;align-items:center;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.page-header h1{margin-right:auto}

.decks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.deck-card{text-align:center;padding:24px;display:flex;flex-direction:column;align-items:center;gap:8px}
.deck-icon{width:48px;height:48px;border-radius:var(--radius-md);background:var(--accent-bg);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;margin-bottom:4px}
.deck-actions{display:flex;gap:8px;margin-top:8px}

.maker-form{max-width:600px;display:flex;flex-direction:column;gap:16px}
.card-entry{display:flex;gap:10px;align-items:center;margin-bottom:10px}
.card-entry .form-input{flex:1}
.question-entry{padding:16px;margin-bottom:12px;display:flex;flex-direction:column;gap:10px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-tertiary)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

.class-info{margin-bottom:20px}
.students-list{display:flex;flex-direction:column;gap:8px}

/* Homework */
.hw-controls{display:flex;gap:16px;align-items:flex-end;flex-wrap:wrap;margin-bottom:24px}
.hw-controls .form-group{flex:1;min-width:150px}
.hw-problem{padding:20px;margin-bottom:16px}
.hw-num{margin-bottom:8px;font-weight:600;color:var(--text-muted)}
.hw-question{font-size:1.05rem;font-weight:700;margin-bottom:14px}
.hw-answer-area{display:flex;gap:10px;align-items:center}
.hw-answer-area .form-input{flex:1}
.hw-feedback{margin-top:12px;padding:12px 16px;border-radius:var(--radius-md);display:flex;align-items:flex-start;gap:10px;font-size:0.85rem;line-height:1.6}
.hw-correct{background:var(--sage-bg);color:var(--sage);border:1px solid rgba(52,211,153,0.2)}
.hw-wrong{background:var(--red-bg);color:var(--red);border:1px solid rgba(248,113,113,0.2)}
.hw-progress-row{display:flex;align-items:center;gap:12px;margin-bottom:14px}

.quiz-results{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 24px;min-height:400px;gap:12px}
.quiz-results-icon{opacity:0.8;margin-bottom:8px}

/* Lesson Planner */
.lp-output h3{margin:20px 0 8px;font-size:0.92rem;color:var(--text-primary)}
.lp-output p{font-size:0.85rem;color:var(--text-secondary);margin-bottom:8px;line-height:1.65}
.lp-list{margin-left:20px;margin-bottom:12px}
.lp-list li{list-style:disc;font-size:0.85rem;color:var(--text-secondary);margin-bottom:4px;line-height:1.6}

.detect-factor{margin-bottom:14px}

/* HW rows */
.hw-row{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;margin-bottom:8px;gap:16px}
.hw-row-left{display:flex;align-items:center;gap:14px}
.hw-row-icon{width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.hw-row-actions{display:flex;gap:8px;align-items:center;flex-shrink:0}

/* Classroom */
.class-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.class-card{padding:24px}
.class-card-header{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.class-card-icon{width:44px;height:44px;border-radius:var(--radius-md);background:var(--accent-bg);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.class-card-info h3{font-size:0.95rem;margin-bottom:4px}
.class-card-stats{display:flex;gap:10px;margin-bottom:16px}
.mini-stat{flex:1;text-align:center;padding:10px;background:var(--bg-tertiary);border-radius:var(--radius-md);border:1px solid var(--border)}
.mini-stat strong{display:block;font-size:1.05rem;font-family:var(--font-mono)}
.mini-stat span{font-size:0.65rem;color:var(--text-muted);text-transform:uppercase}
.class-card-actions{display:flex;gap:8px}
.class-tabs{display:flex;gap:4px;margin-bottom:20px}
.tab-row,.hw-tabs{display:flex;gap:4px;margin-bottom:20px}

/* Student Table */
.student-table{border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}
.st-header{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;padding:10px 16px;background:var(--bg-tertiary);font-size:0.72rem;font-weight:700;text-transform:uppercase;color:var(--text-muted)}
.st-row{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;padding:12px 16px;border-top:1px solid var(--border);font-size:0.82rem;align-items:center}
.st-row:hover{background:var(--bg-hover)}

/* Grade Book */
.gradebook{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-md)}
.gb-header{display:flex;background:var(--bg-tertiary);font-size:0.7rem;font-weight:700;text-transform:uppercase;color:var(--text-muted);border-bottom:2px solid var(--border)}
.gb-row{display:flex;border-top:1px solid var(--border);font-size:0.82rem}
.gb-row:hover{background:var(--bg-hover)}
.gb-cell{padding:10px 14px;min-width:80px;display:flex;align-items:center;gap:6px}
.gb-name{min-width:150px;font-weight:600}
.gb-avg{min-width:80px;font-weight:700;border-left:2px solid var(--border)}
.gb-pass{color:var(--sage)}.gb-fail{color:var(--red)}.gb-missing{color:var(--text-muted)}

/* Grading */
.grade-stats{margin-bottom:20px}
.stat-row{display:flex;gap:16px}
.stat-box{flex:1;text-align:center;padding:16px;background:var(--bg-tertiary);border-radius:var(--radius-md);border:1px solid var(--border)}
.stat-num{font-size:1.4rem;font-weight:800;font-family:var(--font-mono)}
.sub-row{display:flex;align-items:center;gap:12px;padding:14px 16px;margin-bottom:6px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md)}
.sub-info{flex:1;display:flex;flex-direction:column;gap:2px}
.sub-score{font-weight:800;font-size:1.05rem;font-family:var(--font-mono)}
.score-pass{color:var(--sage)}.score-fail{color:var(--red)}
.practice-setup{max-width:500px;display:flex;flex-direction:column;gap:16px;padding:24px}

/* Saved Notes */
.notes-list{display:flex;flex-direction:column;gap:10px}
.note-row{display:flex;align-items:center;gap:14px;padding:16px;cursor:pointer}
.note-row:hover{border-color:var(--text-muted)}
.note-icon{width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}

/* Lesson Listener */
.listener-area{max-width:600px}
.listener-status{display:flex;align-items:center;gap:12px;padding:20px;margin-bottom:20px}
.listener-dot{width:12px;height:12px;border-radius:50%;background:var(--text-muted);flex-shrink:0}
.listener-dot.recording{background:var(--red);animation:pulse 1.5s infinite}
.listener-transcript{min-height:200px;padding:20px;margin-bottom:16px;font-size:0.88rem;line-height:1.7;color:var(--text-secondary);white-space:pre-wrap}

/* Notepad / Paper Editor */
.notepad-layout{display:flex;flex-direction:column;height:calc(100vh - 120px);gap:0}
.notepad-toolbar{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg) var(--radius-lg) 0 0;gap:12px;flex-wrap:wrap}
.notepad-toolbar-left,.notepad-toolbar-right{display:flex;align-items:center;gap:8px}
.notepad-toolbar-center{display:flex;align-items:center;gap:2px}
.notepad-title-input{background:transparent;border:none;outline:none;font-size:1rem;font-weight:700;color:var(--text-primary);width:200px;padding:6px 10px;border-radius:var(--radius-sm)}
.notepad-title-input:focus{background:var(--bg-tertiary)}
.notepad-title-input::placeholder{color:var(--text-muted)}

.np-tool{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-muted);transition:var(--transition-fast)}
.np-tool:hover{background:var(--bg-hover);color:var(--text-secondary)}
.np-tool.active{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border)}
.np-divider{width:1px;height:20px;background:var(--border);margin:0 4px}

.np-paper-select{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 10px;font-size:0.78rem;color:var(--text-secondary);outline:none;cursor:pointer}

.np-colors{display:flex;gap:4px;align-items:center}
.np-color{width:20px;height:20px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:var(--transition-fast)}
.np-color:hover{transform:scale(1.15)}
.np-color.active{border-color:var(--text-primary);box-shadow:0 0 0 2px var(--bg-primary)}

.notepad-paper-wrap{flex:1;overflow:auto;background:var(--bg-tertiary);border:1px solid var(--border);border-top:none;border-radius:0 0 var(--radius-lg) var(--radius-lg)}
.notepad-paper{position:relative;min-height:100%;width:100%;background:#1A1A1D}

/* Paper type backgrounds */
.notepad-paper.lined{background-image:repeating-linear-gradient(transparent,transparent 31px,rgba(255,255,255,0.04) 31px,rgba(255,255,255,0.04) 32px);background-size:100% 32px;background-position:0 10px}
.notepad-paper.graph{background-image:linear-gradient(rgba(255,255,255,0.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.04) 1px,transparent 1px);background-size:24px 24px}
.notepad-paper.dotted{background-image:radial-gradient(circle,rgba(255,255,255,0.08) 1px,transparent 1px);background-size:20px 20px;background-position:10px 10px}

.notepad-paper canvas{position:absolute;inset:0;z-index:2;cursor:crosshair;touch-action:none}
.notepad-text-layer{position:relative;z-index:3;min-height:100%;padding:24px 32px;font-size:0.95rem;line-height:2;color:var(--text-primary);outline:none;white-space:pre-wrap;word-wrap:break-word}
.notepad-text-layer:empty::before{content:'Start typing your notes...';color:var(--text-muted);pointer-events:none}

@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .sidebar-close{display:flex}
  .dash-main{margin-left:0}
  .dash-menu-toggle{display:flex}
  .dash-content{padding:20px 16px}
  .hw-controls{flex-direction:column}
  .form-row{grid-template-columns:1fr}
  .stat-row{flex-direction:column;gap:10px}
  .hw-row{flex-direction:column;align-items:flex-start}
  .class-grid{grid-template-columns:1fr}
  .notepad-toolbar{flex-wrap:wrap}
  .notepad-toolbar-left,.notepad-toolbar-right{flex-wrap:wrap}
}