:root{--color-bg-primary: #ffffff;--color-bg-secondary: #f5f5f7;--color-bg-tertiary: #ffffff;--color-text-primary: #1d1d1f;--color-text-secondary: #6e6e73;--color-text-tertiary: #86868b;--color-accent: #007aff;--color-accent-hover: #0056b3;--color-success: #34c759;--color-warning: #ff9500;--color-danger: #ff3b30;--border-color: #d2d2d7;--border-radius: 8px;--border-radius-lg: 12px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-size-xs: 11px;--font-size-sm: 13px;--font-size-md: 15px;--font-size-lg: 17px;--font-size-xl: 20px;--font-size-2xl: 24px;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 20px;--spacing-2xl: 24px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .3s cubic-bezier(.4, 0, .2, 1)}@media(prefers-color-scheme:dark){:root{--color-bg-primary: #1c1c1e;--color-bg-secondary: #2c2c2e;--color-bg-tertiary: #3a3a3c;--color-text-primary: #f5f5f7;--color-text-secondary: #98989d;--color-text-tertiary: #6e6e73;--border-color: #38383a}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);font-size:var(--font-size-md);line-height:1.5;color:var(--color-text-primary);background-color:var(--color-bg-primary);overflow-x:hidden}#root{min-height:100vh;display:flex;flex-direction:column}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn var(--transition-normal) ease-out}.animate-slide-up{animation:slideUp var(--transition-normal) cubic-bezier(.16,1,.3,1)}.layout-container{display:flex;min-height:100vh;background-color:var(--bg-color)}.sidebar-desktop{display:none}.sidebar-mobile{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:95}.sidebar-mobile-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#00000080;z-index:95}.sidebar-mobile-panel{display:none;transform:translate(-100%);transition:transform .2s ease}.sidebar-mobile-panel.open{transform:translate(0)}.main-content{flex:1;margin-left:64px;margin-top:56px;transition:margin-left .2s ease}.main-content-expanded{margin-left:240px}.main-content-inner{padding:24px;min-height:calc(100vh - 56px)}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;border-bottom:1px solid var(--border-color);background-color:var(--header-bg);position:fixed;top:0;left:0;right:0;height:56px;z-index:90}.topbar-left{display:flex;align-items:center;gap:16px}.topbar-right{display:flex;align-items:center;gap:12px}.topbar-title{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0}.topbar-mobile-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;border-radius:4px;color:var(--text-secondary)}.topbar-theme-toggle{background:none;border:none;cursor:pointer;padding:8px;border-radius:4px;color:var(--text-secondary);font-size:18px}.topbar-user{display:flex;align-items:center;gap:8px;padding:4px 8px;border-radius:8px;background-color:var(--accent-color)}.topbar-user-avatar{width:32px;height:32px;border-radius:50%;background-color:var(--primary-color);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:14px}.topbar-user-name{font-size:14px;color:var(--text-primary);display:none}@media(min-width:768px){.sidebar-desktop,.topbar-user-name{display:block}}@media(max-width:767px){.sidebar-mobile,.sidebar-mobile-panel,.topbar-mobile-toggle{display:block}.main-content{margin-left:0}}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background-color:var(--color-bg-secondary);padding:24px}.auth-container{width:100%;max-width:420px}.auth-card{box-shadow:var(--shadow-lg)}.auth-header{text-align:center;margin-bottom:24px}.auth-title{font-size:var(--font-size-2xl);font-weight:700;color:var(--color-text-primary);margin-bottom:8px}.auth-subtitle{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin:0}.auth-form{display:flex;flex-direction:column;gap:16px}.auth-form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.auth-error{display:flex;align-items:center;gap:8px;padding:12px;border-radius:var(--border-radius);background-color:#ff3b301a;color:var(--color-danger);font-size:var(--font-size-sm)}.auth-error-icon{font-size:16px}.auth-submit-btn{width:100%;margin-top:8px}.auth-footer{text-align:center;margin-top:20px;padding-top:20px;border-top:1px solid var(--border-color);font-size:var(--font-size-sm);color:var(--color-text-secondary)}.auth-link{color:var(--color-accent);text-decoration:none;font-weight:500;transition:color var(--transition-fast)}.auth-link:hover{color:var(--color-accent-hover);text-decoration:underline}.topbar-logout-btn{background:none;border:none;cursor:pointer;padding:4px 8px;border-radius:4px;font-size:16px;color:var(--color-text-secondary);transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center}.topbar-logout-btn:hover{background-color:var(--color-bg-secondary);color:var(--color-danger)}@media(max-width:640px){.auth-form-row{grid-template-columns:1fr}.auth-page{padding:16px}}