:root{--primary: #296BEF;--primary-hover: #1a5ad4;--primary-light: #E9F1FF;--primary-bg: #F5F9FF;--success: #35C950;--success-light: #e8f9eb;--error: #FF7566;--error-light: #ffefed;--warning: #FFA601;--warning-light: #fff8e6;--text-primary: #0B1531;--text-secondary: #6B7799;--text-tertiary: #A3AECC;--text-link: #296BEF;--bg-primary: #FFFFFF;--bg-secondary: #F5F9FF;--bg-tertiary: #E9F1FF;--bg-overlay: rgba(11, 21, 49, .6);--border-light: #E9F1FF;--border-medium: #A3AECC;--shadow-sm: 0 1px 2px rgba(11, 21, 49, .04);--shadow-md: 0 4px 12px rgba(11, 21, 49, .08);--shadow-lg: 0 8px 24px rgba(11, 21, 49, .12);--shadow-xl: 0 16px 48px rgba(11, 21, 49, .16);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-2xl: 28px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--glass-bg: rgba(255, 255, 255, .8);--glass-border: rgba(255, 255, 255, .3);--nav-bg: rgba(255, 255, 255, .95)}@media(prefers-color-scheme:dark){:root{--primary: #4A8BFF;--primary-hover: #5E9AFF;--primary-light: #1E3A5F;--primary-bg: #1A2844;--success: #4ADE80;--success-light: #1C3A2A;--error: #FF8A7A;--error-light: #3A1E1C;--warning: #FFB938;--warning-light: #3A3018;--text-primary: #F0F4FF;--text-secondary: #A0B0CC;--text-tertiary: #6B7A99;--text-link: #4A8BFF;--bg-primary: #0F172A;--bg-secondary: #1E293B;--bg-tertiary: #334155;--bg-overlay: rgba(0, 0, 0, .7);--border-light: #334155;--border-medium: #475569;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .2);--shadow-md: 0 4px 12px rgba(0, 0, 0, .3);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .4);--shadow-xl: 0 16px 48px rgba(0, 0, 0, .5);--glass-bg: rgba(15, 23, 42, .8);--glass-border: rgba(51, 65, 85, .5);--nav-bg: rgba(15, 23, 42, .95)}}*{box-sizing:border-box}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color-scheme:light dark}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-secondary);color:var(--text-primary);line-height:1.5;margin:0;padding:0}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--text-tertiary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}@media(prefers-color-scheme:dark){::-webkit-scrollbar-thumb{background:var(--border-medium)}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}}*:focus{outline:none}*:focus-visible{outline:2px solid var(--primary);outline-offset:2px}button{cursor:pointer;font-family:inherit;border:none;background:none;padding:0;transition:all var(--transition-base)}button:disabled{cursor:not-allowed;opacity:.5}input,textarea,select{font-family:inherit;font-size:inherit;border:1px solid var(--border-light);background:var(--bg-primary);color:var(--text-primary);transition:all var(--transition-fast)}input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #296bef1a}input::placeholder,textarea::placeholder{color:var(--text-tertiary)}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slide-down{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes scale-in{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes bounce-subtle{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.animate-fade-in{animation:fade-in var(--transition-base) ease-out}.animate-slide-up{animation:slide-up var(--transition-slow) ease-out}.animate-slide-down{animation:slide-down var(--transition-slow) ease-out}.animate-scale-in{animation:scale-in var(--transition-base) ease-out}.animate-pulse{animation:pulse 2s ease-in-out infinite}.animate-bounce-subtle{animation:bounce-subtle 2s ease-in-out infinite}.glass{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.glass-dark{background:var(--bg-overlay);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.btn-primary{background:var(--primary);color:#fff;font-weight:600;padding:12px 24px;border-radius:var(--radius-lg);transition:all var(--transition-base)}.btn-primary:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--bg-tertiary);color:var(--primary);font-weight:600;padding:12px 24px;border-radius:var(--radius-lg);transition:all var(--transition-base)}.btn-secondary:hover:not(:disabled){background:var(--primary-light)}.btn-ghost{background:transparent;color:var(--text-secondary);font-weight:500;padding:8px 16px;border-radius:var(--radius-md);transition:all var(--transition-base)}.btn-ghost:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary)}.card{background:var(--bg-primary);border:1px solid var(--border-light);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);transition:all var(--transition-base)}.card:hover{box-shadow:var(--shadow-md)}.card-interactive{cursor:pointer}.card-interactive:hover{border-color:var(--primary);transform:translateY(-2px)}.card-interactive:active{transform:translateY(0)}.tag{display:inline-flex;align-items:center;padding:4px 10px;font-size:12px;font-weight:500;border-radius:var(--radius-sm);background:var(--bg-tertiary);color:var(--text-secondary)}.tag-primary{background:var(--primary-light);color:var(--primary)}.tag-success{background:var(--success-light);color:var(--success)}.tag-error{background:var(--error-light);color:var(--error)}.tag-warning{background:var(--warning-light);color:var(--warning)}.input-group{margin-bottom:16px}.input-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.input-field{width:100%;padding:12px 14px;border:1px solid var(--border-light);border-radius:var(--radius-md);font-size:14px;background:var(--bg-primary);transition:all var(--transition-fast)}.input-field:hover{border-color:var(--border-medium)}.input-field:focus{border-color:var(--primary);box-shadow:0 0 0 3px #296bef1a}.progress-bar{height:4px;background:var(--bg-tertiary);border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;background:var(--primary);border-radius:var(--radius-full);transition:width var(--transition-slow)}.divider{height:1px;background:var(--border-light);margin:16px 0}.nav-bar{background:var(--nav-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--border-light)}.nav-item{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 16px;color:var(--text-tertiary);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;transition:all var(--transition-fast)}.nav-item.active{color:var(--primary)}.nav-item:hover:not(.active){color:var(--text-secondary)}.avatar{width:48px;height:48px;border-radius:var(--radius-full);object-fit:cover;background:var(--bg-tertiary)}.avatar-lg{width:80px;height:80px}.avatar-sm{width:32px;height:32px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;text-align:center;color:var(--text-tertiary)}.empty-state-icon{width:64px;height:64px;border-radius:var(--radius-full);background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:24px}.app-container{width:100%;max-width:100%;min-height:100vh;margin:0 auto;position:relative;transition:all var(--transition-base)}@media(max-width:639px){.app-container{max-width:100%}.mobile-nav{position:fixed;bottom:0;left:0;right:0;height:60px;padding:8px 0;padding-bottom:calc(8px + env(safe-area-inset-bottom,0px));z-index:50}.app-content{padding-bottom:calc(70px + env(safe-area-inset-bottom,0px))}}@media(min-width:640px)and (max-width:1023px){.app-container{max-width:640px;box-shadow:var(--shadow-xl)}.mobile-nav{position:fixed;bottom:0;left:50%;transform:translate(-50%);max-width:640px;width:100%;height:60px;padding:8px 0;z-index:50}.app-content{padding-bottom:70px}.feed-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}}@media(min-width:1024px){body{background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-tertiary) 100%)}.app-container{max-width:1200px;display:flex;flex-direction:column;height:100vh;overflow:hidden}.app-container.with-sidebar{flex-direction:row}.desktop-sidebar{width:240px;height:100vh;position:fixed;left:50%;transform:translate(-600px);padding:24px 16px;background:var(--bg-primary);border-right:1px solid var(--border-light);flex-shrink:0;overflow-y:auto;z-index:40}.desktop-main{flex:1;min-width:0;height:100vh;overflow-y:auto;margin-left:240px}.app-content{padding-bottom:40px}.feed-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.feed-grid-2col{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.mobile-nav{display:none!important}.desktop-nav-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-lg);color:var(--text-secondary);font-size:14px;font-weight:500;transition:all var(--transition-fast);cursor:pointer;margin-bottom:4px}.desktop-nav-item:hover{background:var(--bg-tertiary);color:var(--text-primary)}.desktop-nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}.desktop-nav-item i{width:20px;text-align:center}}@media(min-width:1400px){.app-container{max-width:1400px}.feed-grid{grid-template-columns:repeat(4,1fr)}.desktop-sidebar{width:280px;transform:translate(-700px)}.desktop-main{margin-left:280px}}@media(hover:hover){.card-hover{transition:all var(--transition-base)}.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.card-hover:hover .card-image{transform:scale(1.05)}.card-hover-btn{opacity:0!important;transform:scale(.8)!important;transition:all var(--transition-fast)}.card-hover:hover .card-hover-btn{opacity:1!important;transform:scale(1)!important}}@media(min-width:768px){.profile-detail-container{max-width:720px;margin:0 auto}.profile-header-image{height:320px;border-radius:0 0 var(--radius-2xl) var(--radius-2xl)}.profile-stats-grid{grid-template-columns:repeat(4,1fr)}}@media(min-width:640px){.modal-content{max-width:480px;margin:auto;border-radius:var(--radius-2xl)}.filter-modal{align-items:center;justify-content:center}.filter-modal-content{max-width:500px;border-radius:var(--radius-2xl);margin:20px}}@media(min-width:640px){.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{max-width:420px;width:100%}}@media(min-width:768px){.list-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}}@media(min-width:1024px){.list-grid{grid-template-columns:repeat(3,1fr)}}.hide-mobile{display:none}.hide-desktop{display:block}@media(min-width:1024px){.hide-mobile{display:block}.hide-desktop{display:none}}@media(min-width:768px){.text-responsive-lg{font-size:1.25rem}.text-responsive-xl{font-size:1.5rem}}@media(min-width:640px){.form-grid-2col{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}}