@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";
:root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-tertiary:#1a1a28;--bg-card:#ffffff08;--bg-card-hover:#ffffff0f;--glass-bg:#ffffff0d;--glass-border:#ffffff14;--glass-shadow:0 8px 32px #0000004d;--accent-primary:#6c5ce7;--accent-primary-glow:#6c5ce74d;--accent-secondary:#00d2ff;--accent-secondary-glow:#00d2ff4d;--accent-success:#00e676;--accent-warning:#ffab40;--accent-error:#ff5252;--accent-info:#448aff;--gradient-primary:linear-gradient(135deg, #6c5ce7 0%, #a855f7 50%, #00d2ff 100%);--gradient-voice:linear-gradient(135deg, #00d2ff 0%, #6c5ce7 100%);--gradient-chat:linear-gradient(135deg, #6c5ce7 0%, #a855f7 100%);--gradient-vocab:linear-gradient(135deg, #00e676 0%, #00d2ff 100%);--gradient-surface:linear-gradient(135deg, #6c5ce71a 0%, #00d2ff0d 100%);--text-primary:#f0f0f5;--text-secondary:#9898b0;--text-muted:#5a5a72;--text-accent:#a78bfa;--font-family:"Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-size-xs:.75rem;--font-size-sm:.875rem;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:1.875rem;--font-size-4xl:2.5rem;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--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);--transition-spring:.5s cubic-bezier(.34, 1.56, .64, 1);--sidebar-width:260px;--sidebar-collapsed:72px;--header-height:64px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{font-family:var(--font-family);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6;overflow-x:hidden}body:before{content:"";pointer-events:none;z-index:0;background:radial-gradient(80% 50% at 20% 20%,#6c5ce714 0%,#0000 60%),radial-gradient(60% 40% at 80% 80%,#00d2ff0f 0%,#0000 60%);position:fixed;inset:0}a{color:var(--accent-secondary);text-decoration:none}button{cursor:pointer;font-family:var(--font-family);color:inherit;background:0 0;border:none}input,textarea{font-family:var(--font-family);color:var(--text-primary);background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:var(--space-3) var(--space-4);transition:border-color var(--transition-fast);outline:none}input:focus,textarea:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-primary-glow)}.app-layout{z-index:1;min-height:100vh;display:flex;position:relative}.main-content{margin-left:var(--sidebar-width);padding:var(--header-height) var(--space-8) var(--space-8);transition:margin-left var(--transition-base);flex:1;min-height:100vh}@media (max-width:768px){.main-content{padding:calc(var(--header-height) + var(--space-4)) var(--space-4) var(--space-4);margin-left:0}}.glass-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(20px);box-shadow:var(--glass-shadow);transition:all var(--transition-base)}.glass-card:hover{background:var(--bg-card-hover);border-color:#ffffff1f;transform:translateY(-2px);box-shadow:0 12px 40px #0006}.btn{justify-content:center;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);border-radius:var(--radius-full);font-weight:600;font-size:var(--font-size-sm);letter-spacing:.02em;transition:all var(--transition-base);display:inline-flex;position:relative;overflow:hidden}.btn:before{content:"";border-radius:inherit;opacity:0;transition:opacity var(--transition-fast);background:#ffffff1a;position:absolute;inset:0}.btn:hover:before{opacity:1}.btn:active{transform:scale(.97)}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 20px var(--accent-primary-glow)}.btn-primary:hover{box-shadow:0 6px 30px var(--accent-primary-glow);transform:translateY(-1px)}.btn-ghost{background:var(--glass-bg);border:1px solid var(--glass-border);color:var(--text-secondary)}.btn-ghost:hover{color:var(--text-primary);border-color:#ffffff26}.btn-icon{border-radius:var(--radius-full);width:44px;height:44px;padding:0}.mic-button{background:var(--gradient-voice);color:#fff;width:80px;height:80px;box-shadow:0 8px 32px var(--accent-secondary-glow);transition:all var(--transition-base);cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;font-size:32px;display:flex;position:relative}.mic-button:hover{box-shadow:0 12px 48px var(--accent-secondary-glow);transform:scale(1.05)}.mic-button.active{background:var(--gradient-primary);box-shadow:0 8px 32px var(--accent-primary-glow);animation:1.5s ease-in-out infinite mic-pulse}.mic-button.active:before{content:"";border:2px solid var(--accent-primary);border-radius:50%;animation:1.5s ease-in-out infinite mic-ring;position:absolute;inset:-8px}.mic-button.active:after{content:"";border:1px solid var(--accent-primary);opacity:.5;border-radius:50%;animation:1.5s ease-in-out .3s infinite mic-ring;position:absolute;inset:-16px}@keyframes mic-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.08)}}@keyframes mic-ring{0%{opacity:.8;transform:scale(.9)}to{opacity:0;transform:scale(1.3)}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#fff3}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes glow{0%,to{box-shadow:0 0 20px var(--accent-primary-glow)}50%{box-shadow:0 0 40px var(--accent-primary-glow), 0 0 60px var(--accent-secondary-glow)}}.animate-fade-in{animation:fadeIn .4s var(--transition-base) both}.animate-slide-left{animation:slideInLeft .4s var(--transition-base) both}.animate-slide-right{animation:slideInRight .4s var(--transition-base) both}.animate-scale-in{animation:scaleIn .3s var(--transition-spring) both}.badge{align-items:center;gap:var(--space-1);padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);font-size:var(--font-size-xs);text-transform:uppercase;letter-spacing:.05em;font-weight:600;display:inline-flex}.badge-success{color:var(--accent-success);background:#00e67626}.badge-warning{color:var(--accent-warning);background:#ffab4026}.badge-error{color:var(--accent-error);background:#ff525226}.badge-info{color:var(--accent-info);background:#448aff26}.page-header{margin-bottom:var(--space-8)}.page-header h1{font-size:var(--font-size-3xl);background:var(--gradient-primary);-webkit-text-fill-color:transparent;margin-bottom:var(--space-2);-webkit-background-clip:text;background-clip:text;font-weight:800}.page-header p{color:var(--text-secondary);font-size:var(--font-size-lg)}.spinner{border:3px solid var(--glass-border);border-top-color:var(--accent-primary);border-radius:50%;width:24px;height:24px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.error-highlight{color:var(--accent-error);padding:0 var(--space-1);-webkit-text-decoration:underline wavy var(--accent-error);text-decoration:underline wavy var(--accent-error);cursor:help;background:#ff525226;border-radius:4px;position:relative}.error-highlight:hover .error-tooltip{opacity:1;pointer-events:auto;transform:translateY(0)}.error-tooltip{background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:var(--space-2) var(--space-3);font-size:var(--font-size-xs);color:var(--text-primary);white-space:nowrap;opacity:0;pointer-events:none;transition:all var(--transition-fast);z-index:100;position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%)translateY(4px)}@media (max-width:1024px){:root{--sidebar-width:var(--sidebar-collapsed)}}@media (max-width:768px){:root{--sidebar-width:0px}.page-header h1{font-size:var(--font-size-2xl)}}
.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--glass-border);height:100vh;padding:var(--space-6) var(--space-4);z-index:100;transition:width var(--transition-base);flex-direction:column;display:flex;position:fixed;top:0;left:0;overflow:hidden}.sidebar.collapsed{width:var(--sidebar-collapsed);padding:var(--space-6) var(--space-3)}.sidebar-logo{align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);margin-bottom:var(--space-8);display:flex}.logo-icon{flex-shrink:0;font-size:28px}.logo-text{font-size:var(--font-size-xl);background:var(--gradient-primary);-webkit-text-fill-color:transparent;white-space:nowrap;-webkit-background-clip:text;background-clip:text;font-weight:800}.sidebar-nav{gap:var(--space-1);flex-direction:column;flex:1;display:flex}.nav-item{align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-3);border-radius:var(--radius-md);color:var(--text-secondary);font-weight:500;font-size:var(--font-size-sm);transition:all var(--transition-fast);white-space:nowrap;text-decoration:none;display:flex;position:relative;overflow:hidden}.nav-item:hover{color:var(--text-primary);background:var(--glass-bg)}.nav-item.active{color:var(--text-primary);background:#6c5ce71f}.nav-icon{text-align:center;flex-shrink:0;width:28px;font-size:20px}.nav-label{transition:opacity var(--transition-fast)}.nav-indicator{background:var(--gradient-primary);border-radius:0 4px 4px 0;width:3px;height:24px;position:absolute;top:50%;left:0;transform:translateY(-50%)}.sidebar-toggle{border-radius:var(--radius-full);width:36px;height:36px;margin:var(--space-4) auto;color:var(--text-muted);transition:all var(--transition-fast);justify-content:center;align-items:center;display:flex}.sidebar-toggle:hover{background:var(--glass-bg);color:var(--text-primary)}.toggle-icon{transition:transform var(--transition-base);font-size:12px;display:inline-block}.sidebar-footer{align-items:center;gap:var(--space-3);padding:var(--space-3);border-top:1px solid var(--glass-border);margin-top:var(--space-4);display:flex}.user-avatar{flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:24px;display:flex}.user-info{flex-direction:column;gap:2px;display:flex;overflow:hidden}.user-name{font-size:var(--font-size-sm);white-space:nowrap;font-weight:600}.user-level{width:fit-content}.sidebar-overlay{display:none}@media (max-width:768px){.sidebar{transform:translate(-100%)}.sidebar:not(.collapsed){transform:translate(0)}.sidebar-overlay.visible{z-index:99;background:#00000080;display:block;position:fixed;inset:0}}
.auth-gate{z-index:1000;background:var(--bg-primary);padding:var(--space-4);justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.auth-gate-card{gap:var(--space-4);width:100%;max-width:360px;padding:var(--space-8);background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:var(--radius-lg,16px);text-align:center;flex-direction:column;display:flex}.auth-gate-card h1{font-size:1.5rem}.auth-gate-card p{color:var(--text-secondary,inherit)}.auth-gate-error{color:#f87171;font-size:.875rem}.auth-gate-btn{padding:var(--space-3) var(--space-4);border-radius:var(--radius-sm);background:var(--accent-primary);color:#fff;font-family:var(--font-family);cursor:pointer;border:none;font-size:1rem}.auth-gate-btn:disabled{opacity:.5;cursor:default}