:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#0f1216;--panel:#171b21;--text:#e6e9ef;--accent:#4f9dde}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif}.topbar{border-bottom:1px solid #262b33;justify-content:space-between;align-items:center;padding:1rem 1.5rem;display:flex}.portfolio-value{color:var(--accent);font-weight:600}.pair-switch a{color:var(--text);background:var(--panel);border-radius:6px;margin-left:.5rem;padding:.4rem .8rem;text-decoration:none}.pair-switch a.active{background:var(--accent);color:#0b0d10;font-weight:600}.chart-wrap{background:var(--panel);border-radius:10px;height:70vh;margin:2rem 1.5rem;padding:1rem}.login-box{text-align:center;max-width:320px;margin:20vh auto}.login-box button{background:var(--accent);color:#0b0d10;cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:1rem}