*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0d1117;--surface:#161b22;--surface-2:#1c2333;--surface-3:#21262d;--border:hsla(0,0%,100%,.08);--border-2:hsla(0,0%,100%,.14);--navy:#1e3a5f;--navy-mid:#254a78;--navy-light:#3b7dd8;--accent:#4f9cf9;--accent-dim:rgba(79,156,249,.15);--text:hsla(0,0%,100%,.92);--text-2:hsla(0,0%,100%,.62);--text-muted:hsla(0,0%,100%,.35);--green:#3fb950;--green-bg:rgba(63,185,80,.12);--green-border:rgba(63,185,80,.3);--red:#f85149;--red-bg:rgba(248,81,73,.12);--red-border:rgba(248,81,73,.3);--amber:#d29922;--amber-bg:rgba(210,153,34,.12);--shadow-sm:0 1px 4px rgba(0,0,0,.4);--shadow-md:0 4px 16px rgba(0,0,0,.5);--shadow-lg:0 12px 40px rgba(0,0,0,.6);--shadow-xl:0 24px 80px rgba(0,0,0,.7);--radius:14px;--radius-sm:8px;--radius-xs:5px}body,html{height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Inter,SF Pro Display,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overscroll-behavior:none}button,input,select,textarea{font-family:inherit;font-size:16px;color:var(--text)}input::placeholder{color:var(--text-muted)}input,select,textarea{background:var(--surface-2);border:1px solid var(--border);color:var(--text)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(79,156,249,.15)}button{cursor:pointer;border:none;background:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;letter-spacing:.01em;transition:all .15s ease;border:1px solid transparent}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.4;pointer-events:none}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 0 0 1px rgba(79,156,249,.3),var(--shadow-md)}.btn-primary:hover{filter:brightness(1.1)}.btn-ghost{background:var(--surface-2);color:var(--text-2);border-color:var(--border)}.btn-ghost:hover{background:var(--surface-3);color:var(--text)}.btn-danger{background:var(--red-bg);color:var(--red);border-color:var(--red-border)}.btn-lg{padding:14px 28px;font-size:15px;border-radius:var(--radius)}.btn-full{width:100%}