:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-surface-subtle: #f1f5f9;--color-border: #e2e8f0;--color-border-dark: #cbd5e1;--color-dark: #0f172a;--color-dark-secondary: #334155;--color-primary: #f26522;--color-primary-hover: #d85417;--color-primary-subtle: #fff7ed;--color-success: #10b981;--color-success-dark: #059669;--color-danger: #e11d48;--color-danger-dark: #be123c;--color-warning: #f59e0b;--color-info: #0284c7;--gray-50: #f8fafc;--gray-100: #f1f5f9;--gray-200: #e2e8f0;--gray-300: #cbd5e1;--gray-400: #94a3b8;--gray-500: #64748b;--gray-600: #475569;--gray-700: #334155;--gray-800: #1e293b;--gray-900: #0f172a;--shadow-sm: none;--shadow-card: none;--shadow-hover: none;--shadow-modal: none;--font-heading: "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--container-width: 1200px;--header-height: 88px;--border-radius-pill: 9999px;--border-radius-card: 16px;--border-radius-sm: 10px;--transition-smooth: all .15s ease-in-out}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--color-bg);color:var(--color-dark);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:800;color:var(--color-dark);line-height:1.3;letter-spacing:-.02em}.highlight-bracket{color:var(--color-primary);font-weight:800}.container{width:100%;max-width:var(--container-width);margin:0 auto;padding:0 24px}.btn-pill,.btn-action{display:inline-flex;align-items:center;justify-content:center;gap:8px;background-color:var(--color-dark);color:#fff;padding:12px 24px;border-radius:var(--border-radius-pill);font-family:var(--font-heading);font-weight:700;font-size:.88rem;letter-spacing:.02em;border:1px solid var(--color-dark);cursor:pointer;box-shadow:none;transition:var(--transition-smooth);text-decoration:none}.btn-pill:hover,.btn-action:hover,.btn-primary-pill{background-color:var(--color-primary);border-color:var(--color-primary);color:#fff}.btn-primary-pill:hover{background-color:var(--color-primary-hover);border-color:var(--color-primary-hover);color:#fff}.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#fff;color:var(--color-dark);border:1px solid var(--color-border-dark);padding:10px 20px;border-radius:var(--border-radius-pill);font-family:var(--font-heading);font-weight:700;font-size:.85rem;cursor:pointer;box-shadow:none;transition:var(--transition-smooth);text-decoration:none}.btn-outline:hover{border-color:var(--color-dark);background:var(--color-surface-subtle)}.btn-sm{padding:8px 16px;font-size:.8rem}.card-dark,.card-light{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius-card);padding:24px;box-shadow:none;transition:var(--transition-smooth)}.card-dark:hover,.card-light:hover{border-color:var(--color-border-dark)}.locked-card-container{position:relative;overflow:hidden;border-radius:var(--border-radius-sm);cursor:not-allowed}.locked-card-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0f172aa6;-webkit-backdrop-filter:blur(1.5px);backdrop-filter:blur(1.5px);display:flex;align-items:center;justify-content:center;z-index:10;transition:background .3s ease}.locked-badge-morph{display:inline-flex;align-items:center;justify-content:center;background:var(--color-primary);color:#fff;border:none;border-radius:9999px;height:48px;width:48px;min-width:48px;max-width:48px;padding:0;cursor:not-allowed;-webkit-user-select:none;user-select:none;overflow:hidden;box-shadow:none;box-sizing:border-box;transition:max-width .35s cubic-bezier(.34,1.56,.64,1),width .35s cubic-bezier(.34,1.56,.64,1),padding .35s cubic-bezier(.34,1.56,.64,1),background-color .25s ease}.locked-badge-morph .lock-icon-wrapper{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:24px;height:24px;color:#fff}.locked-badge-morph .lock-text-content{display:inline-block;max-width:0;opacity:0;overflow:hidden;white-space:nowrap;font-family:var(--font-heading);font-size:.82rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:#fff;transition:max-width .35s cubic-bezier(.34,1.56,.64,1),opacity .25s ease .05s,margin-left .35s ease;margin-left:0}.locked-card-container:hover .locked-card-overlay{background:#0f172acc}.locked-card-container:hover .locked-badge-morph{width:auto;min-width:175px;max-width:220px;padding:0 18px;border-radius:9999px;background:var(--color-primary)}.locked-card-container:hover .locked-badge-morph .lock-text-content{max-width:150px;opacity:1;margin-left:8px}.teacher-activity-card{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;gap:16px;cursor:grab;transition:opacity .2s ease,border-color .2s ease,transform .15s ease}.teacher-activity-card.is-dimmed{opacity:.55}.teacher-activity-card.is-dimmed:hover{opacity:1!important;border-color:var(--color-border-dark)!important}.teacher-card-main-info{display:flex;align-items:center;gap:12px;min-width:0;flex:1}.teacher-card-title-text{font-size:1.02rem;color:var(--color-dark);font-weight:800;line-height:1.25;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:480px}.teacher-card-meta-desktop{display:flex;align-items:center;gap:8px;font-size:.76rem;color:var(--gray-500);font-weight:600;margin-top:3px;white-space:nowrap}.teacher-card-controls-row{display:flex;align-items:center;gap:12px;flex-shrink:0}.badge-bracket{display:inline-flex;align-items:center;font-family:var(--font-heading);font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;padding:5px 12px;border-radius:var(--border-radius-pill);background:var(--color-dark);color:#fff}.badge-open{background:var(--color-success);color:#fff}.badge-closed{background:var(--color-danger);color:#fff}.badge-locked{background:var(--gray-300);color:var(--gray-700)}.master-bar{background:#0f172a;border-bottom:1px solid rgba(255,255,255,.1);padding:10px 0;font-size:.85rem;position:sticky;top:0;z-index:1002}.master-bar-container{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap}.master-badge{display:flex;align-items:center;gap:8px;color:#fbbf24;font-weight:800;font-family:var(--font-heading);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.master-controls{display:flex;align-items:center;gap:8px}.master-role-btn{background:#1e293b;color:#94a3b8;border:1px solid #334155;padding:6px 14px;border-radius:var(--border-radius-pill);font-family:var(--font-heading);font-size:.78rem;font-weight:700;cursor:pointer;transition:var(--transition-smooth)}.master-role-btn.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.master-role-btn:hover:not(.active){background:#334155;color:#fff}.main-header{position:sticky;top:0;width:100%;min-height:var(--header-height);background:#fff;border-bottom:1px solid var(--color-border);z-index:1000;display:flex;align-items:center;padding:14px 0}.header-container{display:flex;align-items:center;justify-content:space-between;gap:20px}.subject-header-selector{display:inline-flex;align-items:center;gap:12px;background:transparent;border:none;cursor:pointer;padding:6px 10px;border-radius:var(--border-radius-sm);transition:var(--transition-smooth);text-align:left}.subject-header-selector:hover{background:var(--color-surface-subtle)}.subject-header-title{font-size:clamp(1.8rem,3.8vw,2.5rem);font-weight:900;color:var(--color-dark);letter-spacing:-.03em;line-height:1.15;font-family:var(--font-heading)}.subject-header-arrow{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--color-surface-subtle);border:1px solid var(--color-border-dark);color:var(--color-dark);transition:var(--transition-smooth)}.subject-header-selector:hover .subject-header-arrow{background:var(--color-dark);color:#fff;border-color:var(--color-dark)}.header-user-info{display:flex;align-items:center;gap:12px}.user-avatar-pill{display:flex;align-items:center;gap:10px;background:var(--color-surface-subtle);border:1px solid var(--color-border);padding:8px 16px;border-radius:var(--border-radius-pill)}.user-name{font-size:.85rem;font-weight:700;color:var(--color-dark)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172ab3;z-index:2000;display:flex;align-items:center;justify-content:center;padding:16px}.modal-content{background:#fff;border:1px solid var(--color-border-dark);border-radius:var(--border-radius-card);max-width:680px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:none;padding:30px;color:var(--color-dark)}.main-footer{background-color:#0f172a;color:#fff;padding-top:60px;margin-top:80px}.footer-container{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding-bottom:50px}.footer-desc{color:var(--gray-400);font-size:.95rem;line-height:1.6;margin-bottom:24px;max-width:480px}.btn-footer-cta{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:#fff;color:#0f172a;padding:12px 24px;border-radius:var(--border-radius-pill);font-family:var(--font-heading);font-weight:700;font-size:.85rem;letter-spacing:.04em;transition:var(--transition-smooth);text-decoration:none;border:1px solid #ffffff}.btn-footer-cta:hover{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.btn-footer-cta img,.btn-footer-cta svg{width:20px!important;height:20px!important;max-width:20px!important;max-height:20px!important;min-width:20px!important;min-height:20px!important;object-fit:contain;display:inline-block;flex-shrink:0}.footer-col-2{display:flex;flex-direction:column;align-items:flex-start}.footer-logo{margin-bottom:20px}.footer-logo img{height:48px;width:auto}.footer-contatos{list-style:none;display:flex;flex-direction:column;gap:14px}.contato-item{display:flex;align-items:center;gap:12px;color:#fff;font-size:.9rem;text-decoration:none;transition:var(--transition-smooth)}.contato-icon-wrapper{position:relative;width:24px;height:24px}.contato-icon-wrapper img{position:absolute;top:0;left:0;width:100%;height:100%;transition:opacity .3s ease,transform .3s ease}.contato-icon-wrapper .icon-hover{opacity:0;transform:scale(.85)}.contato-item:hover .icon-default{opacity:0;transform:scale(1.15)}.contato-item:hover .icon-hover{opacity:1;transform:scale(1)}.contato-item:hover span{color:var(--color-primary)}.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:.85rem;color:var(--gray-400)}.bottom-bar-container{display:flex;justify-content:space-between;align-items:center}.bottom-links a{color:var(--gray-400);text-decoration:none;font-weight:600}.bottom-links a:hover{color:var(--color-primary)}@media(max-width:768px){.footer-container{grid-template-columns:1fr;gap:30px}.bottom-bar-container{flex-direction:column;gap:10px;text-align:center}.subject-header-title{font-size:1.6rem}.teacher-activity-card{flex-direction:column!important;align-items:stretch!important;padding:12px 14px!important;gap:10px!important}.teacher-card-main-info{width:100%!important;align-items:center!important}.teacher-card-title-text{white-space:normal!important;max-width:100%!important;font-size:.95rem!important;line-height:1.3!important}.teacher-card-meta-desktop{display:none!important}.teacher-card-controls-row{width:100%!important;justify-content:flex-end!important;border-top:1px solid var(--color-border);padding-top:8px;margin-top:2px}}