:root{--bg-color:#f8fafc;--text-primary:#0f172a;--text-secondary:#64748b;--border-color:#e2e8f0;--panel-bg:#fffc;--input-bg:#fff;--primary-color:#3b82f6;--primary-hover:#2563eb;--secondary-color:#e2e8f0;--secondary-hover:#cbd5e1;--secondary-text:#1e293b;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--glass-border:1px solid #ffffff80}[data-theme=dark]{--bg-color:#0f172a;--text-primary:#f8fafc;--text-secondary:#94a3b8;--border-color:#334155;--panel-bg:#1e293bb3;--input-bg:#1e293b;--primary-color:#3b82f6;--primary-hover:#60a5fa;--secondary-color:#334155;--secondary-hover:#475569;--secondary-text:#f8fafc;--shadow-sm:0 1px 2px 0 #00000080;--shadow-md:0 4px 6px -1px #00000080, 0 2px 4px -2px #00000080;--shadow-lg:0 10px 15px -3px #00000080, 0 4px 6px -4px #00000080;--glass-border:1px solid #ffffff1a}body{background-color:var(--bg-color);color:var(--text-primary);flex-direction:column;min-height:100vh;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5;transition:background-color .3s,color .3s;display:flex}#root{flex-direction:column;min-height:100vh;display:flex}.panel-title{color:var(--text-primary);align-items:center;gap:10px;margin-bottom:8px;font-size:1.25rem;font-weight:700;display:flex}.panel-desc{color:var(--text-secondary);margin-bottom:24px;font-size:.95rem}.formats-tips{color:var(--text-secondary);background-color:var(--secondary-color);border-radius:8px;margin-top:8px;padding:10px 12px;font-size:.85rem}.formats-tips code{background-color:var(--input-bg);color:var(--primary-color);border-radius:4px;padding:2px 6px;font-family:monospace}.btn-row{gap:12px;margin-top:24px;display:flex}.codes-container{flex-direction:column;gap:16px;display:flex}.placeholder-card{text-align:center;border:2px dashed var(--border-color);color:var(--text-secondary);border-radius:12px;padding:40px 20px}.placeholder-card svg{opacity:.5;width:48px;height:48px;margin-bottom:12px}.otp-card{background-color:var(--input-bg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);cursor:pointer;border-radius:12px;justify-content:space-between;align-items:center;padding:20px 24px;transition:transform .2s,box-shadow .2s;display:flex;position:relative;overflow:hidden}.otp-card:hover{box-shadow:var(--shadow-md);border-color:var(--primary-color);transform:translateY(-2px)}.otp-card-left{flex-direction:column;gap:4px;display:flex}.otp-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;font-size:.85rem;font-weight:600}.otp-code-wrapper{align-items:center;display:flex}.otp-code{color:var(--primary-color);font-variant-numeric:tabular-nums;letter-spacing:2px;font-size:2.25rem;font-weight:700}.otp-card-right{align-items:center;gap:20px;display:flex}.timer-circle{width:36px;height:36px}.timer-circle svg{width:100%;height:100%;transform:rotate(-90deg)}.timer-bg{fill:none;stroke:var(--border-color);stroke-width:3px}.timer-progress{fill:none;stroke:var(--primary-color);stroke-width:3px;transition:stroke-dasharray 1s linear,stroke .3s}.timer-progress.danger{stroke:var(--danger-color)}.btn-copy{background-color:var(--secondary-color);color:var(--text-primary);cursor:pointer;border:none;border-radius:8px;padding:8px 16px;font-weight:600;transition:all .2s}.btn-copy:hover{background-color:var(--primary-color);color:#fff}.progress-bar-container{background-color:#0000;height:4px;position:absolute;bottom:0;left:0;right:0}.progress-bar-fill{background-color:var(--primary-color);height:100%;transition:width 1s linear,background-color .3s}.progress-bar-fill.danger{background-color:var(--danger-color)}:root{--bg-color:#f0f4f8;--text-primary:#0f172a;--text-secondary:#475569;--border-color:#e2e8f0;--sidebar-bg:#fff;--panel-bg:#fff;--input-bg:#fff;--primary-color:#4f46e5;--primary-hover:#4338ca;--secondary-color:#f1f5f9;--secondary-hover:#e2e8f0;--secondary-text:#1e293b;--danger-color:#ef4444;--success-color:#10b981;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--border-radius-sm:8px;--border-radius-md:12px;--border-radius-lg:16px;--glass-border:1px solid #ffffff80}[data-theme=dark]{--bg-color:#0b0f19;--text-primary:#f8fafc;--text-secondary:#94a3b8;--border-color:#1e293b;--sidebar-bg:#0f172a;--panel-bg:#0f172a;--input-bg:#1e293b;--primary-color:#6366f1;--primary-hover:#818cf8;--secondary-color:#1e293b;--secondary-hover:#334155;--secondary-text:#f8fafc;--shadow-sm:0 1px 2px 0 #00000080;--shadow-md:0 4px 6px -1px #00000080, 0 2px 4px -2px #00000080;--shadow-lg:0 10px 15px -3px #00000080, 0 4px 6px -4px #00000080;--glass-border:1px solid #ffffff1a}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);min-height:100vh;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.6;transition:background-color .3s,color .3s}#root{min-height:100vh;display:flex}.app-container{width:100%;display:flex}.sidebar{background-color:var(--sidebar-bg);border-right:1px solid var(--border-color);z-index:50;flex-direction:column;width:260px;transition:transform .3s;display:flex;position:fixed;top:0;bottom:0;left:0}.main-wrapper{flex-direction:column;flex:1;min-height:100vh;margin-left:260px;display:flex}.topbar{background-color:var(--panel-bg);border-bottom:1px solid var(--border-color);z-index:40;justify-content:space-between;align-items:center;height:70px;padding:0 30px;display:flex;position:sticky;top:0}.theme-toggle{background:var(--secondary-color);color:var(--text-primary);border:1px solid var(--border-color);cursor:pointer;width:44px;height:44px;box-shadow:var(--shadow-sm);border-radius:50%;justify-content:center;align-items:center;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex}.theme-toggle:hover{background:var(--primary-color);color:#fff;border-color:var(--primary-color);transform:rotate(15deg)scale(1.05);box-shadow:0 0 15px #4f46e566}.theme-toggle svg{transition:transform .5s}.theme-toggle:active{transform:scale(.95)}.page-content{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:30px}.brand{border-bottom:1px solid var(--border-color);flex-direction:column;padding:24px;text-decoration:none;display:flex}.brand h1{background:linear-gradient(135deg, var(--primary-color), #a855f7);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.5rem;font-weight:800;line-height:1.2}.brand span{color:var(--text-secondary);letter-spacing:1px;font-size:.75rem;font-weight:600}.nav-menu{flex-direction:column;flex:1;gap:8px;padding:20px 12px;display:flex;overflow-y:auto}.nav-link{color:var(--text-secondary);border-radius:var(--border-radius-md);align-items:center;gap:12px;padding:12px 16px;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.nav-link:hover{background-color:var(--secondary-color);color:var(--text-primary)}.nav-link.active{background-color:var(--primary-color);color:#fff;box-shadow:0 4px 6px #4f46e533}.nav-section-title{text-transform:uppercase;color:var(--text-secondary);letter-spacing:1px;margin:16px 0 8px 12px;font-size:.75rem;font-weight:700}.footer{background-color:var(--sidebar-bg);border-top:1px solid var(--border-color);margin-top:auto;padding:40px 30px}.footer-content{grid-template-columns:2fr 1fr;gap:40px;max-width:1200px;margin:0 auto;display:grid}.footer-info h3{color:var(--text-primary);margin-bottom:12px;font-size:1.2rem;font-weight:700}.footer-info p{color:var(--text-secondary);margin-bottom:8px;font-size:.9rem}.footer-links{flex-direction:column;gap:12px;display:flex}.footer-links a{color:var(--text-secondary);font-size:.9rem;text-decoration:none;transition:color .2s}.footer-links a:hover{color:var(--primary-color)}.hashtags{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.hashtag{background:var(--secondary-color);color:var(--primary-color);border-radius:4px;padding:4px 8px;font-size:.8rem;font-weight:600}.panel{background:var(--panel-bg);border:1px solid var(--border-color);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-sm);margin-bottom:24px;padding:32px}.panel-header{margin-bottom:24px}.panel-header h2{margin-bottom:8px;font-size:1.5rem;font-weight:700}.panel-header p{color:var(--text-secondary)}.input-group{margin-bottom:20px}.input-group label{flex-direction:column;margin-bottom:8px;display:flex}.label-text{margin-bottom:4px;font-size:.95rem;font-weight:600}.label-hint{color:var(--text-secondary);font-size:.8rem}textarea,input{background-color:var(--input-bg);border:1px solid var(--border-color);border-radius:var(--border-radius-md);width:100%;color:var(--text-primary);padding:16px;font-family:Inter,monospace;font-size:.95rem;transition:all .2s}textarea:focus,input:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 3px #4f46e526}.btn{border-radius:var(--border-radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-size:.95rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #4f46e54d}.btn-primary:disabled{opacity:.7;cursor:not-allowed}.btn-secondary{background-color:var(--secondary-color);color:var(--secondary-text)}.btn-secondary:hover{background-color:var(--secondary-hover)}.btn-icon{color:var(--text-secondary);border-radius:var(--border-radius-sm);cursor:pointer;background:0 0;border:none;padding:8px}.btn-icon:hover{background:var(--secondary-color);color:var(--text-primary)}.mobile-menu-btn{display:none}@media (width<=900px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-wrapper{margin-left:0}.mobile-menu-btn{display:block}.footer-content{grid-template-columns:1fr}}