:root {
  --bg: #0b0e14; --card: #141a24; --line: #232b38;
  --fg: #e6edf3; --mut: #8b97a7; --acc: #14f195; --acc2: #9945ff; --red: #ff5c72;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, sans-serif; background: var(--bg); color: var(--fg); }
.hidden { display: none !important; }
.center { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1.25rem; }
h1 { margin: 0 0 .2rem; font-size: 1.4rem; }
h2 { margin: 0 0 .8rem; font-size: 1rem; color: var(--mut); text-transform: uppercase; letter-spacing: .05em; }
.sub { color: var(--mut); margin: 0 0 1.2rem; }
label { display: block; margin: .6rem 0; color: var(--mut); font-size: .85rem; }
input, select { width: 100%; margin-top: .25rem; padding: .6rem .7rem; background: #0d121a; border: 1px solid var(--line); border-radius: 9px; color: var(--fg); font-size: 1rem; }
button { margin-top: .8rem; padding: .6rem 1rem; border: 0; border-radius: 9px; background: linear-gradient(90deg, var(--acc), var(--acc2)); color: #06110b; font-weight: 700; cursor: pointer; }
button.ghost { background: transparent; border: 1px solid var(--line); color: var(--fg); font-weight: 500; }
.error { color: var(--red); min-height: 1.2em; font-size: .85rem; }
#login-form { width: min(360px, 92vw); }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.4rem; border-bottom: 1px solid var(--line); }
.topbar button { margin: 0; }
.switch { display: inline-flex; gap: .4rem; align-items: center; margin-right: 1rem; color: var(--mut); }
.switch input { width: auto; margin: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; padding: 1.4rem; }
.wide { grid-column: 1 / -1; }
.stat { display: flex; justify-content: space-between; padding: .35rem 0; border-bottom: 1px dashed var(--line); }
.stat b { color: var(--acc); }
table { width: 100%; border-collapse: collapse; }
td, th { text-align: left; padding: .35rem .25rem; border-bottom: 1px solid var(--line); font-size: .9rem; }
.buy { color: var(--acc); } .sell { color: var(--red); }
#trade-form { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: .5rem; align-items: end; }
#trade-form button { grid-column: 1 / -1; }