:root{--font:"Montserrat", -apple-system, BlinkMacSystemFont, sans-serif;--bg:#f4f5f7;--surface:#fff;--border:#e2e4e9;--border-light:#f0f1f3;--text-primary:#1a1d23;--text-secondary:#6b7280;--text-muted:#9ca3af;--primary:#4f46e5;--primary-light:#eef2ff;--primary-hover:#4338ca;--success:#10b981;--success-light:#d1fae5;--warning:#f59e0b;--warning-light:#fef3c7;--shadow-xs:0 1px 2px #0000000f;--shadow-sm:0 2px 8px #00000012;--shadow-md:0 4px 20px #0000001a;--shadow-lg:0 8px 40px #00000024;--radius-xs:4px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--mat-linguagens:#6366f1;--mat-redacao:#ec4899;--mat-historia:#f97316;--mat-geo:#14b8a6;--mat-filosofia:#8b5cf6;--mat-sociologia:#06b6d4;--mat-matematica:#3b82f6;--mat-quimica:#ef4444;--mat-fisica:#f59e0b;--mat-biologia:#22c55e;--mat-simulados:#334155}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}a{color:inherit;text-decoration:none}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,select,textarea{font-family:inherit}.app-shell{height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--surface);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;gap:.5rem;width:220px;padding:1.5rem 1rem;display:flex}.sidebar-logo{color:var(--primary);border-bottom:1px solid var(--border-light);letter-spacing:-.5px;margin-bottom:.5rem;padding:0 .5rem 1.25rem;font-size:1rem;font-weight:800}.sidebar-logo span{color:var(--text-secondary);font-weight:500}.nav-item{border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;align-items:center;gap:.625rem;padding:.6rem .75rem;font-size:.875rem;font-weight:500;transition:all .15s;display:flex}.nav-item:hover{background:var(--bg);color:var(--text-primary)}.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}.sidebar-footer{border-top:1px solid var(--border-light);margin-top:auto;padding-top:1rem}.main-content{background:var(--bg);flex-direction:column;flex:1;display:flex;overflow:hidden}.page-header{background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.75rem;display:flex}.page-header h1{letter-spacing:-.3px;font-size:1.125rem;font-weight:700}.page-header p{color:var(--text-secondary);margin-top:.1rem;font-size:.8rem}.page-body{flex:1;padding:1.5rem 1.75rem;overflow:auto}.btn{border-radius:var(--radius-sm);font-family:var(--font);white-space:nowrap;cursor:pointer;justify-content:center;align-items:center;gap:.4rem;padding:.5rem 1.1rem;font-size:.8rem;font-weight:600;transition:all .15s;display:inline-flex}.btn-primary{background:var(--primary);color:#fff;border:1px solid var(--primary)}.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.btn-success{background:var(--success);color:#fff;border:1px solid var(--success)}.btn-success:hover{opacity:.9;transform:translateY(-1px)}.btn-ghost{color:var(--text-secondary);border:1px solid var(--border);background:0 0}.btn-ghost:hover{background:var(--bg);color:var(--text-primary)}.btn-danger{color:#ef4444;background:0 0;border:none;padding:.4rem .6rem;font-size:.8rem}.btn-danger:hover{background:#fef2f2}.btn-icon{border-radius:var(--radius-xs);border:1px solid var(--border);background:var(--surface);color:var(--text-secondary);padding:.5rem;transition:all .15s}.btn-icon:hover{background:var(--bg);color:var(--text-primary)}.btn-icon.active{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.form-group{flex-direction:column;gap:.4rem;display:flex}.form-label{color:var(--text-primary);font-size:.8rem;font-weight:600}.form-control{border:1.5px solid var(--border);border-radius:var(--radius-sm);width:100%;font-family:var(--font);background:var(--surface);color:var(--text-primary);outline:none;padding:.6rem .875rem;font-size:.875rem;transition:border-color .15s}.form-control:focus{border-color:var(--primary)}.form-control::placeholder{color:var(--text-muted)}.card{background:var(--surface);border-radius:var(--radius-md);border:1px solid var(--border);box-shadow:var(--shadow-xs);padding:1.25rem}.card-hoverable{cursor:pointer;transition:box-shadow .2s,transform .2s}.card-hoverable:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.avatar{color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:1rem;font-weight:700;display:flex}.badge{border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.5px;align-items:center;gap:.25rem;padding:.2rem .6rem;font-size:.7rem;font-weight:700;display:inline-flex}.badge-draft{background:var(--warning-light);color:#92400e}.badge-published{background:var(--success-light);color:#065f46}.badge-admin{background:var(--primary-light);color:var(--primary)}.calendar-wrapper{background:var(--surface);border-radius:var(--radius-md);border:1px solid var(--border);box-shadow:var(--shadow-xs);flex-direction:column;display:flex;overflow:hidden}.calendar-header-row{background:var(--bg);border-bottom:2px solid var(--border);flex-shrink:0;grid-template-columns:64px repeat(7,1fr);display:grid}.calendar-header-cell{text-align:center;text-transform:uppercase;letter-spacing:.8px;color:var(--text-secondary);padding:.625rem .5rem;font-size:.7rem;font-weight:700}.calendar-header-cell.day-today{color:var(--primary)}.calendar-header-cell:not(:last-child){border-right:1px solid var(--border)}.calendar-body{flex:1;overflow-y:auto}.calendar-row{border-bottom:1px solid var(--border-light);grid-template-columns:64px repeat(7,1fr);height:85px;display:grid}.calendar-row:last-child{border-bottom:none}.calendar-time-cell{color:var(--text-muted);text-align:center;border-right:1px solid var(--border);background:var(--bg);flex-shrink:0;padding:.5rem .5rem 0;font-size:.68rem;font-weight:600;line-height:1.2}.calendar-cell{border-right:1px solid var(--border-light);height:85px;padding:3px;transition:background .1s;position:relative;overflow:hidden}.calendar-cell:last-child{border-right:none}.calendar-cell.mentor-mode:hover{background:#f8f9ff}.calendar-cell-add-btn{opacity:0;justify-content:center;align-items:center;transition:opacity .15s;display:flex;position:absolute;inset:0}.calendar-cell.mentor-mode:hover .calendar-cell-add-btn{opacity:1}.calendar-cell-add-inner{border:1.5px dashed var(--primary);width:28px;height:28px;color:var(--primary);background:var(--primary-light);border-radius:50%;justify-content:center;align-items:center;display:flex}.subject-block{border-radius:var(--radius-xs);cursor:pointer;flex-direction:column;gap:2px;width:100%;height:calc(100% - 2px);max-height:78px;padding:.4rem .5rem;transition:filter .15s,transform .15s,box-shadow .15s;display:flex;position:relative;overflow:hidden}.subject-block:hover{filter:brightness(.95);box-shadow:var(--shadow-sm);z-index:5;transform:scale(1.02)}.subject-block .mat-name{text-transform:uppercase;letter-spacing:.5px;color:#fff;-webkit-line-clamp:1;line-clamp:1;word-break:break-all;text-shadow:0 1px 2px #0003;-webkit-box-orient:vertical;font-size:.68rem;font-weight:800;display:-webkit-box;overflow:hidden}.subject-block .mat-note{color:#ffffffd9;-webkit-line-clamp:2;line-clamp:2;word-break:break-all;-webkit-box-orient:vertical;font-size:.62rem;line-height:1.2;display:-webkit-box;overflow:hidden}.subject-block .draft-ribbon{color:#fff;text-transform:uppercase;letter-spacing:.5px;border-radius:0 var(--radius-xs) 0 var(--radius-xs);background:#00000040;padding:1px 5px;font-size:.55rem;font-weight:700;position:absolute;top:0;right:0}.modal-overlay{z-index:100;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#00000073;justify-content:center;align-items:center;padding:1rem;animation:.15s fadeIn;display:flex;position:fixed;inset:0}.modal-box{background:var(--surface);border-radius:var(--radius-lg);width:100%;max-width:440px;box-shadow:var(--shadow-lg);animation:.2s slideUp;overflow:hidden}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:1rem 1.25rem;display:flex}.modal-header h2{font-size:1rem;font-weight:700}.modal-close{border-radius:var(--radius-sm);width:28px;height:28px;color:var(--text-secondary);justify-content:center;align-items:center;transition:background .15s;display:flex}.modal-close:hover{background:var(--bg)}.modal-body{flex-direction:column;gap:1rem;padding:1.25rem;display:flex}.modal-footer{border-top:1px solid var(--border);justify-content:space-between;align-items:center;padding:.875rem 1.25rem;display:flex}.color-palette{flex-wrap:wrap;gap:.5rem;display:flex}.color-swatch{cursor:pointer;border:3px solid #0000;border-radius:50%;width:30px;height:30px;transition:transform .15s,border-color .15s;box-shadow:0 1px 4px #0000001f}.color-swatch:hover{transform:scale(1.15)}.color-swatch.selected{border-color:var(--text-primary);box-shadow:0 0 0 2px #fff, 0 0 0 4px var(--text-primary);transform:scale(1.1)}.popover-overlay{z-index:80;position:fixed;inset:0}.popover-box{background:var(--surface);border-radius:var(--radius-md);border:1px solid var(--border);box-shadow:var(--shadow-lg);z-index:90;min-width:200px;max-width:280px;padding:.875rem 1rem;animation:.15s slideUp;position:absolute}.popover-box .popover-title{text-transform:uppercase;letter-spacing:.5px;margin-bottom:.4rem;font-size:.75rem;font-weight:700}.popover-box .popover-note{color:var(--text-secondary);font-size:.82rem;line-height:1.5}.popover-box .popover-empty{color:var(--text-muted);font-size:.8rem;font-style:italic}.login-page{background:linear-gradient(135deg,#4f46e5 0%,#7c3aed 50%,#ec4899 100%);justify-content:center;align-items:center;min-height:100vh;padding:1.5rem;display:flex}.login-card{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:var(--radius-xl);background:#fffffff7;width:100%;max-width:420px;padding:2.5rem;box-shadow:0 20px 60px #00000040}.login-logo{color:var(--primary);text-align:center;letter-spacing:-1px;margin-bottom:.25rem;font-size:1.5rem;font-weight:800}.login-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:2rem;font-size:.85rem}.role-toggle{background:var(--bg);border-radius:var(--radius-sm);grid-template-columns:1fr 1fr;gap:.5rem;margin-bottom:1.5rem;padding:.3rem;display:grid}.role-btn{border-radius:var(--radius-xs);text-align:center;cursor:pointer;color:var(--text-secondary);background:0 0;border:none;padding:.55rem;font-family:inherit;font-size:.8rem;font-weight:600;transition:all .15s}.role-btn.active{background:var(--surface);color:var(--primary);box-shadow:var(--shadow-xs)}.login-form{flex-direction:column;gap:1rem;display:flex}.input-login{border:1.5px solid var(--border);border-radius:var(--radius-sm);width:100%;font-family:var(--font);background:var(--surface);color:var(--text-primary);outline:none;padding:.75rem 1rem;font-size:.875rem;transition:border-color .15s}.input-login:focus{border-color:var(--primary)}.input-login::placeholder{color:var(--text-muted)}.btn-login{color:#fff;border-radius:var(--radius-sm);width:100%;font-family:var(--font);cursor:pointer;letter-spacing:.3px;background:linear-gradient(135deg,#4f46e5,#7c3aed);border:none;margin-top:.5rem;padding:.8rem;font-size:.9rem;font-weight:700;transition:opacity .15s,transform .15s}.btn-login:hover{opacity:.92;box-shadow:var(--shadow-md);transform:translateY(-1px)}.login-hint{text-align:center;color:var(--text-muted);background:var(--bg);border-radius:var(--radius-sm);margin-top:1.25rem;padding:.625rem 1rem;font-size:.75rem;line-height:1.6}.student-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem;display:grid}.student-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;box-shadow:var(--shadow-xs);padding:1.25rem;transition:box-shadow .2s,transform .2s}.student-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.toolbar{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-xs);align-items:center;gap:.5rem;padding:.4rem .75rem;display:flex}.toolbar-label{color:var(--text-secondary);border-right:1px solid var(--border);margin-right:.25rem;padding-right:.5rem;font-size:.75rem;font-weight:500}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.items-start{align-items:flex-start}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-1{gap:.25rem}.gap-2{gap:.5rem}.gap-3{gap:.75rem}.gap-4{gap:1rem}.gap-6{gap:1.5rem}.w-full{width:100%}.h-full{height:100%}.flex-1{flex:1}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.font-semibold{font-weight:600}.font-bold{font-weight:700}.text-muted{color:var(--text-secondary)}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.mt-auto{margin-top:auto}