:root {
  --bg: #0a0d18;
  --panel: rgba(255, 255, 255, 0.045);
  --ink: #f2f4ff;
  --muted: #9aa3c0;
  --line: rgba(255, 255, 255, 0.1);
  --violet: #7c5cff;
  --cyan: #00d4ff;
  --grad: linear-gradient(135deg, #7c5cff, #00d4ff);
  --green: #22c55e;
  --yellow: #eab308;
  --sans: "Space Grotesk", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
  --r: 16px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: var(--bg); color: var(--ink); font-family: var(--body); font-size: 15.5px; line-height: 1.6; }
h1, h2, h3 { font-family: var(--sans); letter-spacing: -0.01em; }
h1 { font-size: clamp(26px, 4vw, 38px); margin-bottom: 22px; }
h2 { font-size: 21px; margin: 34px 0 16px; }
h3 { font-size: 17px; margin-bottom: 10px; }
a { color: var(--cyan); }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, monospace; font-size: 13px; }
.boot { padding: 60px; text-align: center; color: var(--muted); }
.hidden { display: none !important; }

/* buttons (shared look with landing) */
.btn { display: inline-block; text-decoration: none; font-weight: 600; font-size: 15px; padding: 12px 24px; border-radius: 12px; border: 1px solid transparent; cursor: pointer; font-family: var(--sans); transition: transform .15s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-grad { background: var(--grad); color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--panel); }
.btn-small { padding: 8px 16px; font-size: 13.5px; border-radius: 10px; }
.btn-block { width: 100%; text-align: center; margin-top: 8px; }
.linklike { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 13.5px; padding: 6px 0; text-align: left; }
.linklike:hover { color: var(--ink); }

/* auth */
.auth-wrap { min-height: 100svh; display: grid; place-items: center; padding: 24px; background: radial-gradient(700px 400px at 20% 10%, rgba(124,92,255,.18), transparent), radial-gradient(700px 400px at 85% 90%, rgba(0,212,255,.12), transparent); }
.auth-card { width: min(440px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 38px 34px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: var(--sans); font-weight: 700; font-size: 19px; }
.logo.big { font-size: 24px; margin-bottom: 8px; }
.logo-mark { width: 34px; height: 34px; border-radius: 10px; background: var(--grad); display: grid; place-items: center; font-weight: 700; color: #fff; }
.auth-card .muted { font-size: 14px; margin-bottom: 22px; }
.auth-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.auth-tabs .tab { flex: 1; background: var(--panel); border: 1px solid var(--line); color: var(--muted); padding: 10px; border-radius: 10px; font-weight: 600; cursor: pointer; font-family: var(--sans); }
.auth-tabs .tab.active { background: var(--grad); color: #fff; border-color: transparent; }
.auth-err { color: #f87171; font-size: 14px; min-height: 22px; margin-bottom: 6px; }
label { display: grid; gap: 7px; margin-bottom: 16px; font-size: 14px; font-weight: 600; }
label small { font-weight: 400; color: var(--muted); }
input, select, textarea { background: rgba(255,255,255,.06); border: 1px solid var(--line); border-radius: 10px; color: var(--ink); padding: 12px 14px; font-size: 15px; font-family: var(--body); width: 100%; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--violet); }
select option { background: #141a30; }
.fine { color: var(--muted); font-size: 13.5px; margin-top: 16px; text-align: center; }
.fine a { color: var(--cyan); }

/* layout */
.layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100svh; }
.side { border-right: 1px solid var(--line); padding: 26px 18px; display: flex; flex-direction: column; gap: 26px; position: sticky; top: 0; height: 100svh; background: rgba(255,255,255,.015); }
.side nav { display: grid; gap: 4px; }
.side nav a { display: flex; gap: 12px; align-items: center; color: var(--muted); text-decoration: none; padding: 11px 14px; border-radius: 10px; font-weight: 500; font-size: 15px; }
.side nav a:hover { background: var(--panel); color: var(--ink); }
.side nav a.active { background: var(--grad); color: #fff; }
.side-foot { margin-top: auto; display: grid; gap: 2px; border-top: 1px solid var(--line); padding-top: 14px; }
.main { min-width: 0; }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 20px 34px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(10,13,24,.85); backdrop-filter: blur(12px); z-index: 20; }
.hello { font-weight: 600; }
.bal { background: var(--panel); border: 1px solid var(--line); padding: 8px 18px; border-radius: 999px; font-size: 14.5px; }
.bal strong { color: var(--cyan); }
.content { padding: 34px; max-width: 1080px; }

/* dashboard */
.cards4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 8px; }
.stat-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 24px 22px; }
.stat-card p { color: var(--muted); font-size: 13.5px; margin-bottom: 6px; }
.stat-card h3 { font-size: 30px; margin-bottom: 8px; }
.stat-card a { font-size: 14px; }
.quick { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--panel); }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
th, td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14.5px; }
thead th { color: var(--muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: .08em; }
tbody tr:last-child td { border-bottom: none; }
.linkcell { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); }
.pos { color: var(--green); font-weight: 600; }
.tag { background: rgba(0,212,255,.12); color: var(--cyan); padding: 3px 11px; border-radius: 999px; font-size: 12.5px; font-weight: 600; }
.pill { padding: 4px 13px; border-radius: 999px; font-size: 12.5px; font-weight: 700; }
.p-pending { background: rgba(234,179,8,.15); color: var(--yellow); }
.p-processing { background: rgba(0,212,255,.13); color: var(--cyan); }
.p-completed { background: rgba(34,197,94,.14); color: var(--green); }
.p-open { background: rgba(234,179,8,.15); color: var(--yellow); }

/* forms */
.form-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 30px 28px; max-width: 640px; }
.charge { font-size: 17px; margin: 6px 0 12px; }
.charge strong { color: var(--cyan); font-size: 22px; }
.charge span { color: var(--muted); font-size: 13.5px; }
.bal-line { margin-bottom: 18px; font-size: 14.5px; }
.amt-row { display: flex; gap: 10px; flex-wrap: wrap; margin: -6px 0 16px; }
.chip { background: var(--panel); border: 1px solid var(--line); color: var(--ink); border-radius: 999px; padding: 8px 18px; cursor: pointer; font-weight: 600; font-size: 14px; }
.chip:hover { border-color: var(--violet); }
.alert { border-radius: 12px; padding: 14px 18px; margin-bottom: 18px; font-size: 14.5px; }
.alert.err { background: rgba(248,113,113,.1); border: 1px solid rgba(248,113,113,.4); }
.alert.ok { background: rgba(34,197,94,.1); border: 1px solid rgba(34,197,94,.4); }
.demo-note { color: var(--muted); font-size: 13px; }
.keyrow { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.keyrow code { background: rgba(255,255,255,.06); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; font-size: 14px; flex: 1; min-width: 220px; overflow-x: auto; }
pre.code { background: #070a14; border: 1px solid var(--line); border-radius: 10px; padding: 18px; font-size: 13.5px; overflow-x: auto; color: #c9d4ff; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .side { position: static; height: auto; flex-direction: row; align-items: center; overflow-x: auto; padding: 14px; }
  .side nav { display: flex; }
  .side nav a span { display: none; }
  .side-foot { display: none; }
  .cards4 { grid-template-columns: 1fr 1fr; }
  .content { padding: 22px 18px; }
}