:root{--metu-red: #CC0000;--metu-red-light: #FF1A1A;--metu-gold: #CFB53B;--metu-gold-light: #E8D06F;--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a28;--bg-card: rgba(22, 22, 35, .85);--bg-hover: rgba(255, 255, 255, .04);--bg-active: rgba(204, 0, 0, .08);--text-primary: #f0f0f5;--text-secondary: #8b8b9e;--text-tertiary: #5a5a6e;--text-accent: var(--metu-red-light);--border-color: rgba(255, 255, 255, .06);--border-hover: rgba(255, 255, 255, .12);--glass-bg: rgba(18, 18, 26, .75);--glass-border: rgba(255, 255, 255, .08);--glass-shadow: 0 8px 32px rgba(0, 0, 0, .3);--gradient-primary: linear-gradient(135deg, var(--metu-red), #ff4444);--gradient-gold: linear-gradient(135deg, var(--metu-gold), var(--metu-gold-light));--gradient-subtle: linear-gradient(135deg, rgba(204,0,0,.15), rgba(207,181,59,.1));--font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-xs: .7rem;--font-sm: .8rem;--font-base: .9rem;--font-md: 1rem;--font-lg: 1.15rem;--font-xl: 1.35rem;--font-2xl: 1.75rem;--font-3xl: 2.25rem;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);--sidebar-width: 260px;--right-sidebar-width: 340px}[data-theme=light]{--bg-primary: #f5f5fa;--bg-secondary: #ffffff;--bg-tertiary: #eeeef4;--bg-card: rgba(255, 255, 255, .9);--bg-hover: rgba(0, 0, 0, .03);--bg-active: rgba(204, 0, 0, .06);--text-primary: #1a1a2e;--text-secondary: #5a5a6e;--text-tertiary: #8b8b9e;--border-color: rgba(0, 0, 0, .08);--border-hover: rgba(0, 0, 0, .15);--glass-bg: rgba(255, 255, 255, .8);--glass-border: rgba(0, 0, 0, .06);--glass-shadow: 0 8px 32px rgba(0, 0, 0, .08)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background:var(--bg-primary);color:var(--text-primary);font-size:var(--font-base);line-height:1.6;overflow:hidden;height:100vh}a{color:var(--text-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--metu-red-light)}input,textarea,select,button{font-family:inherit;font-size:inherit}img{max-width:100%;display:block}.hidden{display:none!important}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.glass{background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:var(--glass-shadow)}.accent{color:var(--metu-red-light)}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--bg-hover) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-sm);min-height:20px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.screen{display:none}.screen.active{display:flex}#auth-screen{min-height:100vh;background:var(--bg-primary);position:relative;overflow:auto}#auth-screen:before{content:"";position:fixed;top:-50%;right:-30%;width:600px;height:600px;background:radial-gradient(circle,rgba(204,0,0,.12) 0%,transparent 70%);pointer-events:none;animation:float-glow 8s ease-in-out infinite}#auth-screen:after{content:"";position:fixed;bottom:-40%;left:-20%;width:500px;height:500px;background:radial-gradient(circle,rgba(207,181,59,.08) 0%,transparent 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h1{font-size:var(--font-3xl);font-weight:800;letter-spacing:-1px}.auth-tagline{font-size:var(--font-lg);color:var(--text-secondary);max-width:360px;line-height:1.5}.auth-features{display:flex;flex-direction:column;gap:var(--space-md)}.feature-item{display:flex;align-items:center;gap:var(--space-md);color:var(--text-secondary);font-size:var(--font-base)}.feature-item .material-icons-round{color:var(--metu-red);font-size:24px}.auth-right{flex:1;max-width:440px;position:relative;z-index:1}.auth-card{padding:var(--space-xl);border-radius:var(--radius-xl);animation:fadeInUp .5s ease-out}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.auth-card h2{font-size:var(--font-2xl);font-weight:700;margin-bottom:var(--space-xs)}.auth-subtitle{color:var(--text-secondary);margin-bottom:var(--space-lg)}.input-group{position:relative;margin-bottom:var(--space-md)}.input-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-tertiary);font-size:20px;pointer-events:none}.input-group input,.input-group select{width:100%;padding:14px 16px 14px 46px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);transition:all var(--transition-fast);outline:none}.input-group select{appearance:none;cursor:pointer}.input-group input:focus,.input-group select:focus{border-color:var(--metu-red);box-shadow:0 0 0 3px #cc00001a}.input-group input::placeholder{color:var(--text-tertiary)}.btn-primary{width:100%;padding:14px 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var(--border-color);border-radius:var(--radius-md);font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:var(--space-sm);transition:all var(--transition-fast)}.btn-google:hover{background:var(--bg-hover);border-color:var(--border-hover)}.btn-icon{width:36px;height:36px;border-radius:var(--radius-full);border:none;background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.btn-icon:hover{background:var(--bg-hover);color:var(--text-accent)}.auth-divider{display:flex;align-items:center;gap:var(--space-md);margin:var(--space-lg) 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var(--glass-border);justify-content:space-around;align-items:center;z-index:1000;padding:0 var(--space-sm)}.mobile-nav-item{border:none;background:transparent;color:var(--text-tertiary);display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast)}.mobile-nav-item:hover,.mobile-nav-item.active{color:var(--text-primary)}.mobile-nav-item.active .material-icons-round{color:var(--metu-red)}.mobile-nav-item.fab{background:var(--gradient-primary);color:#fff;width:50px;height:50px;box-shadow:0 4px 12px #cc000059;transform:translateY(-8px)}.mobile-nav-item.fab .material-icons-round{color:#fff}.page-header{position:sticky;top:0;z-index:50;padding:var(--space-md) var(--space-lg);background:#0a0a0fd9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color)}[data-theme=light] .page-header{background:#f5f5fad9}.page-header 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img{width:100%;height:100%;object-fit:cover}.profile-actions{position:absolute;top:0;right:var(--space-lg);display:flex;gap:var(--space-sm)}.profile-name{font-size:var(--font-xl);font-weight:800;margin-top:var(--space-sm)}.profile-handle{color:var(--text-tertiary);font-size:var(--font-sm)}.profile-bio{margin-top:var(--space-sm);line-height:1.5}.profile-meta{display:flex;flex-wrap:wrap;gap:var(--space-md);margin-top:var(--space-sm);color:var(--text-tertiary);font-size:var(--font-sm)}.profile-meta-item{display:flex;align-items:center;gap:4px}.profile-meta-item .material-icons-round{font-size:16px}.profile-stats{display:flex;gap:var(--space-lg);margin-top:var(--space-md);font-size:var(--font-sm)}.profile-stat-value{font-weight:700;color:var(--text-primary)}.profile-stat-label{color:var(--text-tertiary)}.explore-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-md);padding:var(--space-lg)}.explore-card{border-radius:var(--radius-lg);padding:var(--space-lg);cursor:pointer;transition:all var(--transition-base)}.explore-card:hover{transform:translateY(-2px);border-color:var(--border-hover)}.explore-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-sm)}.explore-card-tag{font-weight:700;font-size:var(--font-lg)}.explore-card-count{font-size:var(--font-sm);color:var(--text-tertiary)}.resources-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--border-color)}.resource-card{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--border-color);transition:background var(--transition-fast);cursor:pointer}.resource-card:hover{background:var(--bg-hover)}.resource-icon{width:48px;height:48px;border-radius:var(--radius-md);background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center}.resource-icon .material-icons-round{font-size:24px;color:var(--metu-red)}.resource-info{flex:1;min-width:0}.resource-name{font-weight:600;font-size:var(--font-base);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.resource-meta{font-size:var(--font-xs);color:var(--text-tertiary);display:flex;gap:var(--space-sm);margin-top:2px}.resource-downloads{display:flex;align-items:center;gap:4px;color:var(--text-tertiary);font-size:var(--font-xs)}.messages-layout{display:flex;height:100%}.conversations-list{width:340px;border-right:1px solid var(--border-color);overflow-y:auto;flex-shrink:0}.conversation-item{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md);cursor:pointer;transition:background var(--transition-fast);border-bottom:1px solid var(--border-color)}.conversation-item:hover{background:var(--bg-hover)}.conversation-item.active{background:var(--bg-active)}.conv-info{flex:1;min-width:0}.conv-name{font-weight:600;font-size:var(--font-sm)}.conv-last-msg{font-size:var(--font-xs);color:var(--text-tertiary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-time{font-size:var(--font-xs);color:var(--text-tertiary)}.chat-area{flex:1;display:flex;flex-direction:column}.chat-header{padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--border-color);display:flex;align-items:center;gap:var(--space-sm)}.chat-messages{flex:1;overflow-y:auto;padding:var(--space-lg);display:flex;flex-direction:column;gap:var(--space-sm)}.chat-bubble{max-width:70%;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-lg);font-size:var(--font-sm);line-height:1.5}.chat-bubble.sent{align-self:flex-end;background:var(--gradient-primary);color:#fff;border-bottom-right-radius:4px}.chat-bubble.received{align-self:flex-start;background:var(--bg-tertiary);border-bottom-left-radius:4px}.chat-bubble-time{font-size:var(--font-xs);color:#fff9;text-align:right;margin-top:2px}.chat-bubble.received .chat-bubble-time{color:var(--text-tertiary)}.chat-input-area{padding:var(--space-md) var(--space-lg);border-top:1px solid var(--border-color);display:flex;gap:var(--space-sm);align-items:center}.chat-input-area input{flex:1;padding:10px 16px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-full);color:var(--text-primary);outline:none}.chat-input-area input:focus{border-color:var(--metu-red)}.toast-container{position:fixed;bottom:80px;left:50%;transform:translate(-50%);z-index:9999;display:flex;flex-direction:column;gap:var(--space-sm);pointer-events:none}.toast{padding:12px 24px;border-radius:var(--radius-full);font-size:var(--font-sm);font-weight:500;color:#fff;pointer-events:auto;animation:toastIn .3s ease-out;display:flex;align-items:center;gap:var(--space-sm);white-space:nowrap}.toast.success{background:#00ba7c}.toast.error{background:#f4212e}.toast.info{background:#1d9bf0}@keyframes toastIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.toast.out{animation:toastOut .3s ease-in forwards}@keyframes toastOut{to{opacity:0;transform:translateY(-10px)}}.spinner{width:32px;height:32px;border:3px solid var(--border-color);border-top-color:var(--metu-red);border-radius:50%;animation:spin .8s linear infinite;margin:var(--space-xl) auto}@keyframes spin{to{transform:rotate(360deg)}}.loading-more{text-align:center;padding:var(--space-lg);color:var(--text-tertiary)}.empty-state{text-align:center;padding:var(--space-2xl);color:var(--text-secondary)}.empty-state .material-icons-round{font-size:48px;color:var(--text-tertiary);margin-bottom:var(--space-md)}.empty-state h3{font-size:var(--font-lg);margin-bottom:var(--space-sm)}.edit-profile-modal .modal{max-width:500px}.edit-profile-form{display:flex;flex-direction:column;gap:var(--space-md);padding:var(--space-md) 0}.edit-profile-form label{font-size:var(--font-sm);font-weight:600;color:var(--text-secondary)}.edit-profile-form input,.edit-profile-form textarea,.edit-profile-form select{width:100%;padding:10px 14px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);outline:none}.edit-profile-form input:focus,.edit-profile-form textarea:focus,.edit-profile-form select:focus{border-color:var(--metu-red)}@media(max-width:1200px){.right-sidebar{display:none}}@media(max-width:768px){.sidebar{display:none}.mobile-nav{display:flex}.main-content{border-right:none;padding-bottom:70px}.compose-inline,.post-card,.page-header{padding:var(--space-sm) var(--space-md)}.messages-layout{flex-direction:column}.conversations-list{width:100%;border-right:none;max-height:40vh}.auth-container{flex-direction:column;padding:var(--space-lg);gap:var(--space-xl)}.auth-left{text-align:center;align-items:center}.auth-right{max-width:100%}.profile-cover{height:140px}}@media(max-width:480px){.auth-features{display:none}.auth-brand h1{font-size:var(--font-2xl)}}