:root {
  --bg: #0f1216;
  --panel: #171b22;
  --border: #2a2f3a;
  --text: #e6e8eb;
  --muted: #8b95a3;
  --accent: #f0a020;
  --accent-hover: #ffb73d;
  --danger: #e25c5c;
  --ok: #5cd97a;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ============ topbar (desktop default) ============ */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: .8rem 1.5rem; border-bottom: 1px solid var(--border); background: var(--panel);
  position: sticky; top: 0; z-index: 100;
}
.brand { font-weight: 700; font-size: 1.15rem; }
.topbar nav { display: flex; gap: 1rem; align-items: center; }
.topbar nav a, .topbar nav .btn-link {
  color: var(--text); font-weight: 500; font-size: .95rem;
  padding: .35rem .55rem; border-radius: 4px;
  transition: background .15s, color .15s;
}
.topbar nav a:hover, .topbar nav .btn-link:hover {
  color: var(--accent); background: rgba(240,160,32,.07);
}
.topbar nav .me {
  color: var(--muted); font-size: .85rem; padding: 0 .3rem;
  border-right: 1px solid var(--border); margin-right: .3rem;
}
.btn-link {
  background: transparent; border: none; cursor: pointer; font: inherit;
}

/* hamburger button — hidden on desktop */
.hamburger {
  display: none; cursor: pointer; padding: .5rem; border: none;
  background: transparent; width: 44px; height: 44px;
  align-items: center; justify-content: center; flex-direction: column; gap: 5px;
  border-radius: 6px;
}
.hamburger:hover { background: rgba(255,255,255,.05); }
.hamburger span {
  display: block; width: 24px; height: 2px; background: var(--text);
  border-radius: 2px; transition: transform .25s ease, opacity .25s ease;
}

/* mobile-menu open state markers */
.topbar.nav-open .hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.topbar.nav-open .hamburger span:nth-child(2) { opacity: 0; }
.topbar.nav-open .hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* backdrop behind mobile nav */
.nav-backdrop { display: none; }

/* ============ mobile (<= 900px) ============ */
@media (max-width: 900px) {
  .topbar {
    padding: .65rem 1rem;
    flex-wrap: wrap;
    position: sticky; top: 0;
  }
  .hamburger { display: flex; }

  .topbar nav {
    display: none;
    flex-basis: 100%; flex-direction: column; align-items: stretch;
    gap: .15rem; margin-top: .7rem; padding-top: .7rem;
    border-top: 1px solid var(--border);
    /* hidden by default; revealed when .topbar.nav-open is set */
  }
  .topbar.nav-open nav { display: flex; }

  .topbar nav a,
  .topbar nav .btn-link {
    display: block; width: 100%;
    padding: .8rem .9rem; text-align: left;
    border-radius: 6px; font-size: 1rem;
  }
  .topbar nav a:active,
  .topbar nav .btn-link:active {
    background: rgba(240,160,32,.15);
  }
  .topbar nav form { width: 100%; display: block; }
  .topbar nav .me {
    border-right: none; border-bottom: 1px solid var(--border);
    padding: .35rem .55rem .6rem; margin: 0 0 .35rem;
    font-size: .9rem;
  }

  /* backdrop visible when menu is open */
  .topbar.nav-open + .nav-backdrop {
    display: block;
    position: fixed; inset: 0; top: 0;
    background: rgba(0,0,0,.35);
    z-index: 90;
  }
}

/* ============ layout ============ */
main { max-width: 960px; margin: 2rem auto; padding: 0 1.5rem; }
footer { color: var(--muted); text-align: center; padding: 2rem; font-size: .85rem; }
footer code { background: var(--panel); padding: .15rem .4rem; border-radius: 3px; }
.hero { text-align: center; padding: 3rem 0; }
.hero h1 { font-size: 2.5rem; margin: 0 0 .5rem; }
.cta { margin-top: 2rem; display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
@media (max-width: 480px) {
  .hero { padding: 2rem 0; }
  .hero h1 { font-size: 2rem; }
  main { margin: 1rem auto; padding: 0 1rem; }
}

/* ============ buttons ============ */
.btn {
  display: inline-block; padding: .65rem 1.25rem; border-radius: 6px;
  background: var(--accent); color: #1a1207; font-weight: 600;
  border: none; cursor: pointer; text-decoration: none; font-size: .95rem;
}
.btn:hover { background: var(--accent-hover); color: #1a1207; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #ef7474; color: #fff; }

/* ============ flash ============ */
.flash { padding: .8rem 1.2rem; margin: 1rem auto; max-width: 960px; border-radius: 6px; }
.flash-ok { background: rgba(92, 217, 122, .12); border: 1px solid var(--ok); }
.flash-error { background: rgba(226, 92, 92, .12); border: 1px solid var(--danger); }
.inline { display: inline; }

/* ============ forms ============ */
form.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 1.5rem; max-width: 420px; margin: 2rem auto;
}
form.card h2 { margin-top: 0; }
form.card label { display: block; margin: .9rem 0 .3rem; color: var(--muted); font-size: .9rem; }
form.card input, form.card select, form.card textarea {
  width: 100%; padding: .55rem .75rem; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); border-radius: 4px; font: inherit;
}
form.card button { margin-top: 1.5rem; width: 100%; }

/* ============ tables ============ */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; min-width: 560px; }
th, td { text-align: left; padding: .5rem .75rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
.role-admin { color: var(--accent); font-weight: 600; }
.role-mod { color: #6ec6e2; font-weight: 600; }
.role-user { color: var(--muted); }

/* ============ tutorial / connect ============ */
.tutorial { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 1.5rem; margin: 1.5rem 0; }
.tutorial h2 { margin-top: 0; border-bottom: 1px solid var(--border); padding-bottom: .5rem; }
.tutorial ol, .tutorial ul { padding-left: 1.5rem; }
.tutorial li { margin: .4rem 0; }
.tutorial code { background: var(--bg); padding: .15rem .45rem; border-radius: 3px; font-size: .9em; }
.tutorial .kbd {
  display: inline-block; padding: .1rem .5rem; background: var(--bg); border: 1px solid var(--border);
  border-bottom-width: 2px; border-radius: 4px; font-family: ui-monospace, monospace; font-size: .85em;
}
.tabs { display: flex; gap: .25rem; margin-bottom: 1rem; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.tabs a {
  padding: .6rem 1rem; color: var(--muted); border-bottom: 2px solid transparent;
  margin-bottom: -1px; font-weight: 500;
}
.tabs a.active { color: var(--accent); border-bottom-color: var(--accent); }