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.modal-content{width:calc(100% - 20px)!important;min-width:0!important;max-width:none!important;margin:0 auto!important;border-radius:18px;height:auto;max-height:90vh;max-height:90dvh}.modal-header{padding:18px 20px}.modal-title{font-size:1.05rem}.modal-close{width:30px;height:30px;font-size:1.1rem}.modal-body{padding:12px;gap:12px}.modal-option-card{padding:12px!important;gap:8px!important;align-items:center}.modal-option-letter{width:32px!important;height:32px!important;font-size:.9rem!important;flex-shrink:0}.modal-option-text{flex:1!important;min-width:0;font-size:.85rem!important;line-height:1.4}.modal-option-check{padding:6px 10px!important;font-size:.7rem!important;flex-shrink:0}.check-icon{font-size:.9rem}}@media(max-width:320px){.hero-section,.type-nav{margin-bottom:4px}.option-card{padding:8px 12px;min-height:48px}}@media(max-height:600px)and 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*{box-sizing:border-box!important;max-width:100%!important}#options-modal.modal-content .modal-body,#options-modal .modal-body{width:100%!important;max-width:100%!important;min-width:0!important;overflow-x:hidden!important;padding:16px!important}#options-modal.modal-content .modal-option-card,#options-modal .modal-option-card{width:100%!important;max-width:100%!important;box-sizing:border-box!important;flex-direction:row!important;flex-wrap:nowrap!important;align-items:center!important}#options-modal.modal-content .modal-option-left,#options-modal .modal-option-left{width:100%!important;max-width:100%!important;min-width:0!important;display:flex!important;align-items:center;gap:12px}#options-modal.modal-content .modal-option-letter,#options-modal .modal-option-letter{width:36px!important;height:36px!important;font-size:1rem!important;flex-shrink:0}#options-modal.modal-content .modal-option-text,#options-modal 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blur(12px)}html,body{overflow-y:auto;height:auto;margin:0}.study-posts-container{min-height:100vh;background-color:var(--bg-color);background-image:radial-gradient(circle at 0% 0%,rgba(99,102,241,.1) 0,transparent 40%);font-family:Plus Jakarta Sans,sans-serif;color:var(--text-main);padding:clamp(1.5rem,4vw,3rem) clamp(1rem,3vw,2rem)}.loading-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background-color:var(--bg-color)}.spinner{width:48px;height:48px;border:4px solid rgba(99,102,241,.1);border-top-color:var(--accent-blue);border-radius:50%;animation:spin 1s linear infinite}.header-section{max-width:1100px;margin:0 auto clamp(2rem,4vw,3rem);display:flex;justify-content:space-between;align-items:center;gap:clamp(1rem,3vw,2rem);flex-wrap:wrap}.title-group{flex:1;min-width:250px}.title-group h1{font-size:clamp(2rem,5vw,2.8rem);font-weight:800;letter-spacing:-.03em;margin:0 0 clamp(.3rem,1vw,.5rem) 0;line-height:1.1}.title-group p{color:var(--text-dim);font-size:clamp(.9rem,2vw,1rem);margin:0}.create-post-btn{background:#fff;color:#000;border:none;padding:clamp(.7rem,1.5vw,.8rem) clamp(1.2rem,2.5vw,1.6rem);border-radius:clamp(10px,2vw,14px);font-weight:700;font-size:clamp(.9rem,1.8vw,1rem);cursor:pointer;transition:all .3s ease;white-space:nowrap;display:flex;align-items:center;gap:.5rem}.create-post-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #fff3}.create-post-btn:active{transform:translateY(0)}.plus-icon{font-size:1.2em;line-height:1}.filter-bar{max-width:1100px;margin:0 auto clamp(1.5rem,3vw,2.5rem);display:grid;grid-template-columns:2fr 1fr;gap:clamp(1rem,2vw,1.5rem)}.input-wrapper{width:100%}.modern-input{width:100%;background:var(--card-bg);border:1px solid var(--border-color);padding:clamp(.8rem,1.5vw,1rem) clamp(1rem,2vw,1.2rem);border-radius:clamp(12px,2vw,16px);color:#fff;font-size:clamp(.9rem,1.8vw,1rem);transition:all .3s 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0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.date-label{font-size:clamp(.75rem,1.5vw,.8rem);color:var(--text-dim);display:block}.content-section{padding:0 clamp(1rem,2vw,2rem);border-left:1px solid rgba(255,255,255,.1);border-right:1px solid rgba(255,255,255,.1);min-width:0}.tag-row{display:flex;align-items:center;gap:clamp(.6rem,1.2vw,.8rem);margin-bottom:clamp(.4rem,1vw,.5rem);flex-wrap:wrap}.subject-tag{font-size:clamp(.7rem,1.4vw,.75rem);font-weight:700;color:var(--accent-blue);text-transform:uppercase;letter-spacing:.05em}.topic-badge{font-size:clamp(.7rem,1.4vw,.75rem);background:#6366f126;color:#a5b4fc;padding:.25rem .6rem;border-radius:6px;font-weight:600}.content-section h2{font-size:clamp(1.1rem,2.2vw,1.25rem);margin:0 0 clamp(.4rem,1vw,.5rem) 0;line-height:1.3;font-weight:700}.description-text{color:var(--text-dim);font-size:clamp(.85rem,1.7vw,.9rem);line-height:1.5;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.action-section{display:flex;flex-direction:column;align-items:flex-end;gap:clamp(.6rem,1.2vw,.8rem)}.status-indicator{width:100%;text-align:right}.live-badge{font-size:clamp(.75rem,1.5vw,.8rem);font-weight:600;color:#fbbf24;display:inline-block}.live-badge.pulse{animation:pulse 2s ease-in-out infinite}.idle-badge{font-size:clamp(.75rem,1.5vw,.8rem);font-weight:600;color:var(--text-dim);display:inline-block}.join-action-btn{width:100%;background:transparent;border:1px solid var(--accent-blue);color:#fff;padding:clamp(.6rem,1.2vw,.7rem);border-radius:clamp(10px,1.5vw,12px);font-weight:600;font-size:clamp(.85rem,1.7vw,.9rem);cursor:pointer;transition:all .3s ease;white-space:nowrap}.join-action-btn:hover{background:var(--accent-blue);box-shadow:0 0 20px #6366f166;transform:translateY(-2px)}.join-action-btn:active{transform:translateY(0)}.modal-overlay{position:fixed;inset:0;background-color:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:center;z-index:1000;padding:1rem;animation:fadeIn .2s ease;overflow-y:auto}.modal-content{background:#0f172a;border:1px solid var(--border-color);border-radius:clamp(12px,2vw,16px);padding:clamp(20px,3vw,24px);max-width:550px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #00000080;color:#fff;animation:slideUp .3s ease}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:clamp(20px,3vw,24px);gap:1rem}.modal-header h2{margin:0;font-size:clamp(1.3rem,3vw,1.5rem);color:#fff;font-weight:700;flex:1}.close-btn{background:#ffffff0d;border:1px solid var(--border-color);font-size:clamp(24px,4vw,28px);cursor:pointer;color:var(--text-dim);line-height:1;padding:0;width:clamp(32px,5vw,36px);height:clamp(32px,5vw,36px);border-radius:8px;display:flex;align-items:center;justify-content:center;transition:all .2s ease;flex-shrink:0}.close-btn:hover{background:#ffffff1a;color:#fff;border-color:#fff3}.modal-error{margin-bottom:1.5rem}.modern-form{display:flex;flex-direction:column;gap:clamp(16px,2.5vw,20px)}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{display:block;font-weight:600;color:#fff;font-size:clamp(.85rem,1.7vw,.9rem)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:clamp(12px,2vw,16px)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:clamp(10px,1.8vw,12px) clamp(12px,2vw,14px);background:#ffffff0d;border:1px solid var(--border-color);border-radius:clamp(8px,1.5vw,10px);color:#fff;font-size:clamp(.9rem,1.8vw,.95rem);font-family:inherit;transition:all .2s ease;box-sizing:border-box}.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-dim);opacity:.7}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent-blue);background:#ffffff14;box-shadow:0 0 0 3px #6366f11a}.form-group input:disabled,.form-group textarea:disabled{opacity:.6;cursor:not-allowed}.form-group textarea{resize:vertical;min-height:80px;line-height:1.5}.modal-actions{display:flex;gap:clamp(10px,2vw,12px);justify-content:flex-end;margin-top:clamp(12px,2vw,16px)}.cancel-btn,.submit-btn{padding:clamp(10px,1.8vw,12px) clamp(18px,3vw,20px);border-radius:clamp(8px,1.5vw,10px);font-size:clamp(.9rem,1.8vw,.95rem);font-weight:600;cursor:pointer;transition:all .2s ease;border:none;white-space:nowrap}.cancel-btn{background:transparent;border:1px solid var(--border-color);color:var(--text-dim)}.cancel-btn:hover:not(:disabled){background:#ffffff0d;color:#fff}.submit-btn{background:var(--accent-blue);color:#fff}.submit-btn:hover:not(:disabled){background:#5558e3;box-shadow:0 4px 12px #6366f14d}.cancel-btn:disabled,.submit-btn:disabled{opacity:.5;cursor:not-allowed}@media(max-width:1200px){.post-row-card{grid-template-columns:200px 1fr 160px}}@media(max-width:1024px){.post-row-card{grid-template-columns:180px 1fr;grid-template-areas:"user action" "content content"}.user-section{grid-area:user}.content-section{grid-area:content;border:none;border-top:1px solid rgba(255,255,255,.1);padding:1.5rem 0 0}.action-section{grid-area:action;align-items:flex-end}}@media(max-width:768px){.study-posts-container{padding:1.5rem 1rem}.header-section{flex-direction:column;align-items:flex-start;gap:1.5rem}.create-post-btn{width:100%;justify-content:center}.title-group 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.75rem}.title-group h1{font-size:1.5rem}.post-row-card{padding:1rem}.user-section{gap:.75rem}.content-section{padding-top:1rem}.modal-content{padding:16px;border-radius:12px}.modal-header h2{font-size:1.25rem}.form-group input,.form-group textarea{padding:10px 12px;font-size:.9rem}}@media(min-width:1400px){.study-posts-container{padding:3.5rem 3rem}.header-section,.filter-bar,.posts-list{max-width:1200px}.title-group h1{font-size:3rem}.post-row-card{grid-template-columns:240px 1fr 200px;padding:2rem 2.5rem}.avatar-squircle{width:56px;height:56px;font-size:1.4rem}.content-section h2{font-size:1.35rem}}@media(min-width:1920px){.header-section,.filter-bar,.posts-list{max-width:1400px}}:root{--bg-main: #0f172a;--bg-card: #1e293b;--bg-hover: #334155;--accent-primary: #6366f1;--accent-secondary: #a855f7;--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--glass: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1);--grad-linear: linear-gradient(135deg, 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4px)}.profile-header-content{position:absolute;bottom:0;left:0;right:0;padding:clamp(1.5rem,4vw,2rem);display:flex;align-items:flex-end;gap:clamp(1rem,3vw,1.5rem);background:linear-gradient(to top,rgba(10,14,26,.95),transparent)}.profile-avatar-large{width:clamp(80px,15vw,120px);height:clamp(80px,15vw,120px);background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border-radius:clamp(20px,3vw,28px);border:clamp(3px,.5vw,4px) solid var(--bg-primary);display:flex;align-items:center;justify-content:center;font-size:clamp(2rem,6vw,3rem);font-weight:700;color:#fff;box-shadow:var(--shadow-lg),var(--shadow-glow);flex-shrink:0}.profile-header-info{flex:1;padding-bottom:clamp(.5rem,2vw,.75rem);min-width:0}.profile-name{font-size:clamp(1.5rem,4vw,2.5rem);font-weight:800;margin-bottom:clamp(.25rem,1vw,.5rem);background:linear-gradient(135deg,var(--text-primary),var(--accent-primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.2}.profile-status{display:flex;align-items:center;gap:clamp(.5rem,1.5vw,.75rem);font-size:clamp(.85rem,1.8vw,.95rem);color:var(--text-secondary)}.status-dot{width:clamp(6px,1.2vw,8px);height:clamp(6px,1.2vw,8px);background:#10b981;border-radius:50%;animation:pulse-dot 2s infinite;flex-shrink:0}@keyframes pulse-dot{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.2)}}.tab-content-area{padding:0 clamp(1rem,3vw,2rem) 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ease-out}.input-group{margin-bottom:clamp(1.5rem,3vw,2rem)}.input-label{display:block;font-size:clamp(.85rem,1.7vw,.9rem);font-weight:600;color:var(--text-secondary);margin-bottom:clamp(.75rem,1.5vw,1rem);text-transform:uppercase;letter-spacing:.5px}.bio-textarea{width:100%;padding:clamp(1rem,2vw,1.25rem);background:#0f172a99;border:1px solid var(--border-glass);border-radius:var(--radius-md);color:var(--text-primary);font-family:inherit;font-size:clamp(.9rem,1.8vw,.95rem);line-height:1.6;resize:vertical;transition:all var(--transition-normal);min-height:120px}.bio-textarea:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #38bdf81a}.bio-textarea:read-only{cursor:not-allowed;opacity:.7}.bio-textarea::placeholder{color:var(--text-muted)}.save-btn{display:inline-flex;align-items:center;justify-content:center;gap:clamp(.5rem,1.5vw,.75rem);padding:clamp(.875rem,2vw,1rem) clamp(2rem,4vw,2.5rem);background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border:none;border-radius:var(--radius-md);color:#fff;font-size:clamp(.9rem,1.8vw,1rem);font-weight:600;cursor:pointer;transition:all var(--transition-normal);box-shadow:var(--shadow-sm),0 0 20px #38bdf833;position:relative;overflow:hidden}.save-btn:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#fff3;transform:translate(-50%,-50%);transition:width .6s,height .6s}.save-btn:hover:before{width:300px;height:300px}.save-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md),0 0 30px #38bdf866}.save-btn:active{transform:translateY(0)}.save-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes 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#38bdf84d;z-index:1}.privacy-toggle.private .toggle-slider{transform:translate(100%)}.toggle-text{position:relative;flex:1;text-align:center;font-size:clamp(.75rem,1.5vw,.8rem);font-weight:600;z-index:2;transition:color var(--transition-fast);text-transform:uppercase;letter-spacing:.5px}.privacy-toggle.public .toggle-text.public{color:#fff}.privacy-toggle.public .toggle-text.private,.privacy-toggle.private .toggle-text.public{color:var(--text-muted)}.privacy-toggle.private .toggle-text.private{color:#fff}.upload-trigger-btn{display:inline-flex;align-items:center;justify-content:center;gap:clamp(.5rem,1.5vw,.75rem);padding:clamp(.875rem,2vw,1rem) clamp(1.5rem,3vw,2rem);background:#1e293bcc;border:1px solid var(--border-glass);border-radius:var(--radius-md);color:var(--text-primary);font-size:clamp(.9rem,1.8vw,1rem);font-weight:600;cursor:pointer;transition:all var(--transition-normal);white-space:nowrap}.upload-trigger-btn.primary{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border:none;box-shadow:var(--shadow-sm),0 0 20px #38bdf833;color:#fff}.upload-trigger-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--accent-primary)}.upload-trigger-btn.primary:hover{box-shadow:var(--shadow-md),0 0 30px #38bdf866}.upload-trigger-btn:active{transform:translateY(0)}.btn-icon{font-size:clamp(1.1rem,2.2vw,1.2rem)}.notes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(clamp(250px,35vw,300px),1fr));gap:clamp(1rem,2.5vw,1.5rem)}.note-card{transition:all var(--transition-normal);cursor:pointer}.note-card:hover{transform:translateY(-4px);border-color:#38bdf84d;box-shadow:var(--shadow-md),0 0 20px #38bdf81a}.note-header{display:flex;justify-content:space-between;align-items:flex-start;gap:clamp(.75rem,1.5vw,1rem);margin-bottom:clamp(1rem,2vw,1.25rem)}.note-title{font-size:clamp(1rem,2vw,1.1rem);font-weight:600;color:var(--text-primary);flex:1;line-height:1.3}.visibility-badge{display:inline-flex;align-items:center;gap:4px;padding:clamp(3px,.6vw,4px) clamp(8px,1.5vw,10px);border-radius:8px;font-size:clamp(.7rem,1.4vw,.75rem);font-weight:600;text-transform:uppercase;letter-spacing:.5px;flex-shrink:0;white-space:nowrap}.visibility-badge.public{background:#10b98126;color:#10b981;border:1px solid rgba(16,185,129,.3)}.visibility-badge.private{background:#fb923c26;color:#fb923c;border:1px solid rgba(251,146,60,.3)}.note-preview{width:100%;height:clamp(180px,25vw,220px);border-radius:var(--radius-md);overflow:hidden;margin-bottom:clamp(1rem,2vw,1.25rem);background:var(--bg-secondary)}.note-preview img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}.note-card:hover .note-preview img{transform:scale(1.05)}.note-footer{display:flex;justify-content:space-between;align-items:center}.note-date{font-size:clamp(.8rem,1.6vw,.85rem);color:var(--text-muted)}.portfolio-section{animation:fadeInUp .6s ease-out .2s backwards}.portfolio-header-box{display:flex;justify-content:space-between;align-items:center;margin-bottom:clamp(1.5rem,3vw,2rem);gap:clamp(1.5rem,3vw,2rem);border-color:#38bdf833;box-shadow:0 0 30px #38bdf80d;flex-wrap:wrap}.ai-status{display:flex;align-items:center;gap:clamp(1rem,2vw,1.25rem);flex:1;min-width:0}.sparkle{font-size:clamp(1.75rem,4vw,2rem);animation:sparkle 2s infinite;flex-shrink:0}@keyframes 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p{font-size:clamp(.9rem,1.8vw,1rem);color:var(--text-muted);line-height:1.5}.loading-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);padding:clamp(1rem,3vw,2rem)}.skeleton-profile{max-width:600px;width:100%;padding:clamp(1rem,3vw,1.5rem)}.skeleton-banner{width:100%;height:clamp(150px,25vw,180px);background:linear-gradient(90deg,#1e293b66,#33415566,#1e293b66);border-radius:var(--radius-lg);margin-bottom:clamp(1rem,2.5vw,1.5rem);animation:shimmer-skeleton 2s infinite}.skeleton-avatar{width:clamp(80px,15vw,100px);height:clamp(80px,15vw,100px);margin:clamp(-40px,-7.5vw,-50px) auto clamp(1rem,2.5vw,1.5rem);background:linear-gradient(90deg,#1e293b99,#33415599,#1e293b99);border-radius:24px;animation:shimmer-skeleton 2s infinite}.skeleton-info{text-align:center}.skeleton-line{height:clamp(16px,3vw,20px);background:linear-gradient(90deg,#1e293b66,#33415566,#1e293b66);border-radius:10px;margin:clamp(.5rem,1.5vw,.75rem) 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p{font-size:clamp(1rem,2vw,1.1rem);color:var(--text-secondary);font-weight:500;line-height:1.5}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media(max-width:1024px){.profile-main{max-width:90vw}.notes-grid,.certificates-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}}@media(max-width:768px){.profile-header-content{flex-direction:column;align-items:center;text-align:center;padding:1.5rem}.profile-header-info{padding-bottom:0}.profile-status{justify-content:center}.tab-content-area{padding:0 1.5rem 3rem}.upload-header{flex-direction:column;align-items:stretch}.privacy-toggle-container{width:100%;justify-content:space-between}.portfolio-header-box{flex-direction:column;align-items:stretch}.upload-trigger-btn{width:100%}.notes-grid,.certificates-grid{grid-template-columns:1fr}}@media(max-width:600px){.profile-header-banner{height:clamp(180px,30vh,220px);margin-bottom:2rem}.tab-content-area{padding:0 1rem 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