:root{--bg: #000000;--surface: #121212;--primary: #00c853;--primary-hover: #009624;--primary-active: #00ff7f;--text-primary: #ffffff;--text-secondary: #b3b3b3;--border: #2a2a2a;--radius: 12px;--space-xs: 8px;--space-sm: 12px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--shadow-soft: 0 18px 40px rgba(0, 0, 0, .35)}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;font-family:Segoe UI,Tahoma,sans-serif;background:radial-gradient(circle at 10% 20%,rgba(0,200,83,.13),transparent 36%),radial-gradient(circle at 90% 12%,rgba(0,255,127,.09),transparent 32%),var(--bg);color:var(--text-primary)}a{color:var(--text-primary)}.icon{margin-right:6px}.layout{min-height:100vh;display:flex;flex-direction:column}.topbar{border-bottom:1px solid var(--border);background:#121212e6;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.topbar-inner{width:min(1120px,calc(100% - 32px));margin:0 auto;padding:var(--space-md) 0;display:flex;justify-content:space-between;align-items:center;gap:var(--space-md);flex-wrap:wrap}.brand-wrap{display:grid;gap:2px}.brand{color:var(--primary);text-decoration:none;font-size:1.2rem;font-weight:700}.brand-main{display:flex;align-items:center;gap:8px}.brand-logo{width:auto;height:30px;display:block}.brand-subtitle{color:var(--text-secondary);font-size:.85rem}.dev-signature-hidden{display:none}.nav{display:flex;flex-wrap:wrap;gap:var(--space-xs)}.nav a{color:var(--text-secondary);text-decoration:none;border:1px solid var(--border);border-radius:999px;padding:8px 14px;transition:.2s ease}.nav a.active{color:var(--text-primary);border-color:var(--primary);background:#00c85333}.nav a:hover{color:var(--text-primary);border-color:var(--primary-hover)}.content{width:min(1120px,calc(100% - 32px));margin:var(--space-lg) auto;flex:1;display:grid;justify-items:center;align-content:flex-start}.card{width:min(920px,100%);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-soft);padding:clamp(16px,2vw,24px)}.stack{display:grid;gap:var(--space-sm)}input:not([type=checkbox]),textarea,button{padding:10px 12px;border-radius:10px;border:1px solid var(--border);font:inherit}textarea{resize:vertical;min-height:110px}input,textarea{background:#101010;color:var(--text-primary)}input::placeholder,textarea::placeholder{color:#8c8c8c}button{width:auto;background:var(--primary);color:var(--text-primary);border:1px solid transparent;cursor:pointer;transition:.2s ease}.stack button{width:100%}.inline-actions{display:flex;flex-wrap:wrap;gap:var(--space-xs)}.inline-actions button{width:auto}button:hover{background:var(--primary-hover)}button:active{background:var(--primary-active);color:#082012}button:disabled{cursor:not-allowed;opacity:.65}.button-secondary{background:transparent;border-color:var(--border);color:var(--text-secondary)}.button-secondary:hover{border-color:var(--primary-hover);color:var(--text-primary);background:#0096241f}p{color:var(--text-secondary)}h1,h2,h3{margin:0;color:var(--text-primary)}ul{margin:0;padding-left:20px}li{margin-bottom:10px}hr{border:none;border-top:1px solid var(--border);margin:var(--space-md) 0}label{color:var(--text-secondary)}input[type=checkbox]{width:auto;accent-color:var(--primary)}.auth-layout{min-height:100vh;padding:var(--space-lg) var(--space-md);display:grid;place-items:center}.auth-shell{width:min(560px,100%);display:grid;gap:var(--space-md)}.app-brand{text-align:center;display:grid;gap:4px}.app-brand-title{color:var(--primary);margin:0;font-size:clamp(1.5rem,4vw,2rem)}.app-brand-header{display:inline-flex;align-items:center;gap:8px}.app-brand-logo{width:auto;height:40px;display:block}.app-brand-subtitle{margin:0;color:var(--text-secondary)}.feedback-error{color:#ff8f8f}.feedback-info{color:#9ad7b5}.history-row{display:flex;justify-content:space-between;align-items:center;gap:var(--space-sm);flex-wrap:wrap}.subtabs{display:flex;gap:var(--space-xs);flex-wrap:wrap;margin-bottom:var(--space-md)}.subtabs button{width:auto;border:1px solid var(--border);background:transparent;color:var(--text-secondary)}.subtabs button.is-active{border-color:var(--primary);background:#00c8532e;color:var(--text-primary)}.knowledge-list{list-style:none;padding:0;display:grid;gap:var(--space-sm)}.knowledge-item{border:1px solid var(--border);border-radius:10px;padding:var(--space-sm);background:#101010}.file-input-label{display:grid;gap:6px;font-size:.95rem}.file-input-label input[type=file]{border:1px dashed var(--border);border-radius:10px;padding:var(--space-sm);background:#101010}@media (max-width: 640px){.topbar-inner,.content{width:calc(100% - 20px)}.nav{width:100%}.nav a{flex:1;text-align:center}.inline-actions button{width:100%}}