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0}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--border)}.auth-divider span{font-size:12px;color:var(--text-4);font-weight:500}.auth-form{display:flex;flex-direction:column;gap:14px}.auth-field{display:flex;flex-direction:column;gap:4px}.auth-field label{font-size:13px;font-weight:600;color:var(--text-2)}.auth-field input{padding:11px 14px;background:var(--bg-warm);border:1px solid var(--border);border-radius:10px;color:var(--text);font-size:14px;font-family:inherit;outline:none;transition:all .2s ease}.auth-field input::placeholder{color:var(--text-4)}.auth-field input:focus{border-color:var(--red);box-shadow:0 0 0 3px #e6002314;background:var(--bg)}.auth-submit{width:100%;padding:12px;margin-top:4px;background:var(--red);border:none;border-radius:var(--r-full);color:#fff;font-size:15px;font-weight:700;font-family:inherit;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 14px #e6002340}.auth-submit:hover{box-shadow:0 6px 20px #e6002359;transform:translateY(-1px)}.auth-switch{text-align:center;margin-top:18px;font-size:13px;color:var(--text-3)}.auth-switch button{background:none;border:none;color:var(--red);font-weight:700;font-family:inherit;font-size:13px;cursor:pointer;text-decoration:underline}@media(max-width:800px){.auth-page{grid-template-columns:1fr}.auth-left{display:none}.auth-right{padding:24px}.auth-card{padding:28px 24px}}.profile-page,.friends-page{padding:32px 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.2s}.profile-id-box:hover{border-color:var(--red);background:#fff}.profile-id-box code{font-size:14px;font-weight:700;color:var(--text);font-family:Courier New,monospace}.copy-hint{font-size:11px;color:var(--text-4)}.profile-id-tip{font-size:12px;color:var(--text-4)}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}.stat-card{background:var(--bg-card);border-radius:var(--r);padding:20px;box-shadow:var(--shadow-sm);text-align:center;display:flex;flex-direction:column;gap:4px}.stat-value{font-size:28px;font-weight:900;color:var(--red)}.stat-label{font-size:12px;font-weight:600;color:var(--text-3);text-transform:uppercase;letter-spacing:.04em}.profile-section h3{font-size:16px;font-weight:700;margin-bottom:12px}.course-history{display:flex;flex-direction:column;gap:0}.history-item{display:flex;align-items:center;gap:12px;border-left:2px solid var(--border);margin-left:6px;padding:10px 0 10px 16px;position:relative}.history-dot{position:absolute;left:-5px;width:8px;height:8px;border-radius:50%;background:var(--red)}.history-skill{font-size:14px;font-weight:600}.history-time{font-size:12px;color:var(--text-4);margin-left:8px}.logout-btn{display:flex;align-items:center;gap:8px;margin-top:28px;padding:10px 20px;background:var(--bg-card);border:1px solid var(--border-hover);border-radius:var(--r-full);font-size:14px;font-weight:600;font-family:inherit;color:var(--red);cursor:pointer;transition:all .2s}.logout-btn:hover{background:#fef2f2;border-color:var(--red)}.friends-tabs{display:flex;gap:4px;margin-bottom:20px;background:var(--bg-pill);border-radius:var(--r-full);padding:4px;width:fit-content}.friends-tab{display:flex;align-items:center;gap:6px;padding:8px 18px;font-size:13px;font-weight:600;font-family:inherit;border:none;border-radius:var(--r-full);background:transparent;color:var(--text-3);cursor:pointer;transition:all 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22px;background:var(--red);color:#fff;border:none;border-radius:var(--r-full);font-size:14px;font-weight:700;font-family:inherit;cursor:pointer;transition:all .2s;white-space:nowrap}.add-friend-row button:hover{box-shadow:0 4px 14px #e600234d}.add-msg{font-size:13px;margin-top:8px;font-weight:600}.add-msg.success{color:var(--green)}.add-msg.error{color:var(--red)}.demo-ids{display:flex;align-items:center;gap:6px;margin-top:12px;flex-wrap:wrap}.demo-label{font-size:11px;color:var(--text-4);font-weight:600}.demo-id-chip{font-size:11px;padding:4px 10px;background:var(--bg-warm);border:1px solid var(--border);border-radius:6px;font-family:Courier New,monospace;cursor:pointer;color:var(--text-2);transition:all .2s}.demo-id-chip:hover{border-color:var(--red);color:var(--red)}.friends-list{display:flex;flex-direction:column;gap:8px}.friend-card{display:flex;align-items:center;justify-content:space-between;background:var(--bg-card);padding:14px 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h4{font-size:12px;font-weight:700;color:var(--text-3);text-transform:uppercase;letter-spacing:.05em;margin-bottom:10px}.friend-course-card{display:flex;align-items:flex-start;gap:12px;background:var(--bg-warm);border-radius:var(--r);padding:14px;border:1px solid var(--border)}.friend-course-icon{width:36px;height:36px;min-width:36px;border-radius:8px;background:var(--blue-soft);color:var(--blue);display:flex;align-items:center;justify-content:center}.friend-course-name{font-size:14px;font-weight:700;display:block;margin-bottom:4px}.friend-course-node{font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:4px}.friend-course-node strong{color:var(--text)}.friend-idle-text{font-size:13px;color:var(--text-4);font-style:italic}.remove-friend-btn{padding:8px 16px;background:transparent;border:1px solid var(--border-hover);border-radius:var(--r-full);font-size:13px;font-weight:600;color:var(--red);font-family:inherit;cursor:pointer;transition:all .2s}.remove-friend-btn:hover{background:#fef2f2;border-color:var(--red)}.notifications-content{display:flex;flex-direction:column;gap:8px}.mark-read-btn{align-self:flex-end;padding:6px 14px;background:transparent;border:1px solid var(--border);border-radius:var(--r-full);font-size:12px;font-weight:600;font-family:inherit;color:var(--text-3);cursor:pointer;transition:all .2s}.mark-read-btn:hover{background:var(--bg-warm)}.notifications-list{display:flex;flex-direction:column;gap:4px}.notif-item{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border-radius:var(--r);background:var(--bg-card);transition:all .2s;position:relative}.notif-item.unread{background:#fef8f8}.notif-icon-wrap{padding-top:2px}.notif-icon{width:30px;height:30px;border-radius:8px;display:flex;align-items:center;justify-content:center}.notif-icon.blue{background:var(--blue-soft);color:var(--blue)}.notif-icon.green{background:var(--green-soft);color:var(--green)}.notif-icon.purple{background:var(--purple-soft);color:var(--purple)}.notif-body p{font-size:13px;color:var(--text-2);line-height:1.4}.notif-body strong{color:var(--text);font-weight:700}.notif-time{font-size:11px;color:var(--text-4)}.unread-dot{position:absolute;top:18px;right:14px;width:8px;height:8px;border-radius:50%;background:var(--red)}.empty-state{text-align:center;padding:40px;color:var(--text-4);font-size:14px}.onboarding-page{min-height:100vh;width:100vw;display:flex;align-items:center;justify-content:center;background:var(--bg-warm);padding:40px}.onboarding-card{width:100%;max-width:480px;background:var(--bg);border-radius:var(--r-lg);padding:40px 36px;box-shadow:var(--shadow-lg)}.onboarding-header{text-align:center;margin-bottom:28px}.onboarding-header .auth-logo{margin:0 auto 16px}.onboarding-header h1{font-size:22px;font-weight:800;letter-spacing:-.04em;margin-bottom:6px}.onboarding-header p{font-size:14px;color:var(--text-3)}.onboarding-form{display:flex;flex-direction:column;gap:16px}.username-input-wrap{position:relative}.username-input-wrap input{width:100%}.username-preview{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:12px;font-weight:700;color:var(--text-4);font-family:Courier New,monospace}.color-picker{display:flex;gap:8px;flex-wrap:wrap}.color-swatch{width:32px;height:32px;border-radius:50%;border:3px solid transparent;cursor:pointer;transition:all .2s;outline:none}.color-swatch.active{border-color:var(--text);box-shadow:0 0 0 2px var(--bg),0 0 0 4px currentColor;transform:scale(1.1)}.color-swatch:hover{transform:scale(1.1)}.profile-preview{margin-top:4px}.preview-label{font-size:12px;font-weight:700;color:var(--text-3);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}.preview-card{display:flex;align-items:center;gap:14px;background:var(--bg-warm);border:1px solid var(--border);border-radius:var(--r);padding:14px}.preview-avatar{width:44px;height:44px;min-width:44px;border-radius:50%;color:#fff;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center}.preview-info{display:flex;flex-direction:column}.preview-name{font-size:15px;font-weight:700}.preview-tag{color:var(--text-4);font-weight:500}.preview-bio{font-size:12px;color:var(--text-3)}.discord-tag{color:var(--text-4);font-weight:500;font-size:.85em;margin-left:2px}.search-result-card{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding:14px;background:var(--bg-warm);border:1px solid var(--border);border-radius:var(--r);animation:slideIn .2s ease}@keyframes slideIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.search-result-left{display:flex;align-items:center;gap:12px}.search-result-info{display:flex;flex-direction:column}.search-result-bio{font-size:12px;color:var(--text-3)}.add-result-btn{padding:8px 16px;background:var(--green);color:#fff;border:none;border-radius:var(--r-full);font-size:13px;font-weight:700;font-family:inherit;cursor:pointer;transition:all .2s;white-space:nowrap}.add-result-btn:hover{box-shadow:0 4px 12px #0a87454d}.friend-courses-list{margin-bottom:14px}.friend-course-chip{display:inline-block;padding:4px 12px;margin:0 6px 6px 0;background:var(--bg-warm);border:1px solid var(--border);border-radius:var(--r-full);font-size:12px;font-weight:600;color:var(--text-2)}.page-heading-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-heading-row 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40px;max-width:800px}.home-hero{display:flex;align-items:center;gap:18px;margin-bottom:28px}.home-avatar{width:56px;height:56px;min-width:56px;border-radius:50%;color:#fff;font-weight:800;font-size:22px;display:flex;align-items:center;justify-content:center}.home-greeting{font-size:24px;font-weight:800;letter-spacing:-.04em;margin-bottom:2px}.home-subtitle{font-size:14px;color:var(--text-3)}.home-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:28px}.home-stat-card{display:flex;align-items:center;gap:14px;background:var(--bg-card);border-radius:var(--r);padding:18px;box-shadow:var(--shadow-sm)}.home-stat-icon{width:42px;height:42px;min-width:42px;border-radius:10px;display:flex;align-items:center;justify-content:center}.home-stat-icon.blue{background:var(--blue-soft);color:var(--blue)}.home-stat-icon.green{background:var(--green-soft);color:var(--green)}.home-stat-icon.purple{background:var(--purple-soft);color:var(--purple)}.home-stat-val{font-size:24px;font-weight:900;display:block}.home-stat-lbl{font-size:11px;font-weight:600;color:var(--text-3);text-transform:uppercase;letter-spacing:.04em}.home-section{margin-bottom:24px}.home-section h2{font-size:16px;font-weight:700;margin-bottom:12px}.home-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.home-action-card{display:flex;flex-direction:column;align-items:center;gap:10px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r);padding:20px 16px;font-size:13px;font-weight:600;font-family:inherit;color:var(--text);cursor:pointer;transition:all .2s}.home-action-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--border-hover)}.home-action-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center}.home-recent{display:flex;flex-direction:column;gap:0}.home-recent-item{display:flex;align-items:center;gap:12px;border-left:2px solid var(--border);margin-left:6px;padding:10px 0 10px 16px;position:relative}.home-recent-dot{position:absolute;left:-5px;width:8px;height:8px;border-radius:50%;background:var(--red)}.home-recent-skill{font-size:14px;font-weight:600;flex:1}.home-recent-date{font-size:12px;color:var(--text-4)}.courses-page{padding:32px 40px;max-width:800px}.courses-subtitle{font-size:14px;color:var(--text-3);margin-bottom:24px}.courses-search{margin-bottom:28px}.courses-search-wrap{display:flex;align-items:center;gap:10px;background:var(--bg-card);border:2px solid var(--border);border-radius:var(--r-full);padding:12px 18px;transition:all .2s}.courses-search-wrap:focus-within{border-color:var(--red);box-shadow:0 0 0 3px #e6002314}.courses-search-wrap svg{color:var(--text-4);flex-shrink:0}.courses-search-wrap input{flex:1;border:none;outline:none;background:transparent;font-size:15px;font-family:inherit;color:var(--text)}.courses-search-wrap input::placeholder{color:var(--text-4)}.courses-search-btn{width:34px;height:34px;border-radius:50%;background:var(--red);border:none;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;flex-shrink:0}.courses-search-btn:hover{box-shadow:0 4px 12px #e600234d}.courses-section{margin-bottom:28px}.courses-section h2{font-size:16px;font-weight:700;margin-bottom:12px}.courses-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.course-topic-card{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r);font-size:13px;font-weight:600;font-family:inherit;color:var(--text);cursor:pointer;transition:all .2s;white-space:nowrap}.course-topic-card:hover{box-shadow:var(--shadow-sm);border-color:var(--border-hover);transform:translateY(-1px)}.courses-history{display:flex;flex-direction:column;gap:8px}.course-history-card{display:flex;align-items:center;gap:12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r);padding:14px 16px;font-family:inherit;color:var(--text);cursor:pointer;transition:all .2s}.course-history-card:hover{box-shadow:var(--shadow-sm);border-color:var(--border-hover)}.course-history-icon{width:36px;height:36px;min-width:36px;border-radius:8px;background:var(--bg-warm);display:flex;align-items:center;justify-content:center;color:var(--text-3)}.course-history-info{flex:1;display:flex;flex-direction:column}.course-history-name{font-size:14px;font-weight:600}.course-history-date{font-size:12px;color:var(--text-4)}.course-arrow-icon{color:var(--text-4);flex-shrink:0}@media(max-width:700px){.home-page,.courses-page,.friends-page,.profile-page{padding:20px 16px}.home-stats,.home-actions{grid-template-columns:1fr}.courses-grid{grid-template-columns:repeat(2,1fr)}.stats-grid{grid-template-columns:1fr}.profile-card{flex-direction:column;text-align:center}}@media(max-width:500px){.courses-grid{grid-template-columns:1fr}.home-hero{flex-direction:column;text-align:center}}