<style>
:root {
  --green: #1CC858;
  --ink: #0A0A0A;
  --white: #FFFFFF;
  --ember: #FF5722;
  --slate: #F4F4F2;
  --steel: #1A1A1A;
  --fog: #888888;
  --border: 1.5px solid var(--ink);
  --font: 'IBM Plex Mono', monospace;
  --head: 'Urbanist', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font); background: var(--white); color: var(--ink); font-size: 13px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--green); }

/* ── Login ── */
.login-root { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.login-box { width: 100%; max-width: 380px; }
.login-box h1 { font-family: var(--head); font-size: 28px; font-weight: 800; margin-bottom: 4px; }
.login-box .sub { color: var(--fog); font-size: 12px; margin-bottom: 24px; }
.login-box label { display: block; font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 4px; }
.login-box input { width: 100%; padding: 10px 12px; border: var(--border); font-family: var(--font); font-size: 13px; background: var(--white); margin-bottom: 14px; outline: none; }
.login-box input:focus { border-color: var(--green); }
.login-box .btn { width: 100%; padding: 10px; border: var(--border); background: var(--ink); color: var(--white); font-family: var(--font); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .1em; cursor: pointer; }
.login-box .btn:hover { background: var(--green); color: var(--ink); }
.login-box .divider { text-align: center; font-size: 10px; color: var(--fog); margin: 16px 0; position: relative; }
.login-box .divider::before, .login-box .divider::after { content: ''; position: absolute; top: 50%; width: 42%; height: 1px; background: var(--slate); }
.login-box .divider::before { left: 0; }
.login-box .divider::after { right: 0; }
.btn-google { width: 100%; padding: 10px; border: var(--border); background: var(--white); font-family: var(--font); font-size: 11px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px; }
.btn-google:hover { background: var(--slate); }
.msg { font-size: 11px; margin-top: 8px; min-height: 1.2em; }
.msg.err { color: var(--ember); }
.msg.ok { color: var(--green); }

/* ── Header ── */
.header { display:flex;align-items:center;justify-content:space-between;padding:10px 24px;border-bottom:var(--border);background:var(--white);position:sticky;top:0;z-index:100 }
.header-left { display:flex;align-items:center;gap:8px }
.header-right { display:flex;align-items:center;gap:4px }

/* ── Dashboard Layout ── */
.dash { display: flex; min-height: 100vh; }
.sidebar { width: 220px; min-width: 220px; border-right: var(--border); padding: 24px; display: flex; flex-direction: column; }
.sidebar .logo { font-family: var(--head); font-size: 18px; font-weight: 800; margin-bottom: 32px; display: flex; align-items: center; gap: 8px; }
.sidebar .logo span { color: var(--green); }
.sidebar nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.sidebar nav a { padding: 8px 10px; font-size: 11px; font-weight: 500; border-radius: 4px; text-transform: uppercase; letter-spacing: .06em; }
.sidebar nav a:hover { background: var(--slate); }
.sidebar nav a.active { background: var(--ink); color: var(--white); }
.sidebar .logout { margin-top: auto; padding: 8px 10px; font-size: 10px; color: var(--fog); cursor: pointer; }
.sidebar .logout:hover { color: var(--ember); }
.main { flex: 1; padding: 32px 40px; max-width: 800px; }
.main h2 { font-family: var(--head); font-size: 22px; font-weight: 800; margin-bottom: 4px; }
.main .sub { color: var(--fog); font-size: 12px; margin-bottom: 24px; }

/* ── Cards ── */
.card { border: var(--border); padding: 20px; margin-bottom: 16px; }
.card h3 { font-family: var(--head); font-size: 14px; font-weight: 700; margin-bottom: 12px; }
.card .row { display: flex; justify-content: space-between; padding: 6px 0; font-size: 12px; border-bottom: 1px solid var(--slate); }
.card .row:last-child { border-bottom: none; }
.card .label { color: var(--fog); }
.card .value { font-weight: 600; }
.badge { display: inline-block; padding: 2px 8px; font-size: 10px; font-weight: 700; border: 1.5px solid var(--ink); }
.badge.green { border-color: var(--green); color: var(--green); }
.badge.amber { border-color: var(--ember); color: var(--ember); }

/* ── Credit gauge ── */
.gauge { border: var(--border); padding: 4px; margin: 12px 0; }
.gauge-fill { height: 8px; background: var(--green); transition: width .5s; }
.gauge-fill.amber { background: var(--ember); }
.gauge-fill.red { background: var(--ink); }
.gauge-label { display: flex; justify-content: space-between; font-size: 10px; color: var(--fog); margin-top: 4px; }

/* ── Key display ── */
.key-box { border: var(--border); padding: 12px 16px; font-family: var(--font); font-size: 12px; word-break: break-all; background: var(--slate); margin-bottom: 12px; }
.key-actions { display: flex; gap: 8px; }
.key-actions button { padding: 6px 16px; border: var(--border); background: var(--white); font-family: var(--font); font-size: 10px; font-weight: 600; cursor: pointer; text-transform: uppercase; letter-spacing: .06em; }
.key-actions button:hover { background: var(--ink); color: var(--white); }
.key-actions button.danger:hover { background: var(--ember); color: var(--white); }

/* ── Credit packs ── */
.packs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.pack { border: var(--border); padding: 16px; text-align: center; cursor: pointer; }
.pack:hover { border-color: var(--green); }
.pack .amt { font-family: var(--head); font-size: 20px; font-weight: 800; }
.pack .price { font-size: 11px; color: var(--fog); margin-top: 2px; }
.pack .tag { font-size: 9px; font-weight: 700; color: var(--green); margin-top: 4px; }

/* ── Billing / Settings ── */
.invoice-list { font-size: 12px; }
.invoice-list .row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--slate); }
.danger-zone { margin-top: 32px; padding: 16px; border: 1.5px solid var(--ember); }
.danger-zone h3 { color: var(--ember); }
.danger-zone button { margin-top: 8px; padding: 6px 16px; border: 1.5px solid var(--ember); background: var(--white); color: var(--ember); font-family: var(--font); font-size: 10px; font-weight: 600; cursor: pointer; }
.danger-zone button:hover { background: var(--ember); color: var(--white); }

@media (max-width: 640px) {
  .dash { flex-direction: column; }
  .sidebar { width: 100%; min-width: auto; border-right: none; border-bottom: var(--border); padding: 16px; }
  .sidebar nav { flex-direction: row; flex-wrap: wrap; }
  .main { padding: 16px; }
  .packs { grid-template-columns: repeat(2, 1fr); }
}
