/* ---- palette ---------------------------------------------------------- */
:root {
  --bg: #eef1f6;
  --bg-grad1: #e7ecf6;
  --bg-grad2: #f4f1ec;
  --surface: #ffffff;
  --surface-2: #f7f8fb;
  --fg: #1b2230;
  --muted: #687288;
  --line: #e4e8f0;
  --accent: #3b5bdb;
  --accent-2: #6f8bff;
  --accent-ink: #ffffff;
  --ok: #1e8e4f;
  --err: #d6353a;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 8px 24px rgba(16,24,40,.06);
  --shadow-lg: 0 12px 32px rgba(16,24,40,.14);
  --radius: 14px;
}
.theme-dark {
  --bg: #0f1117;
  --bg-grad1: #121624;
  --bg-grad2: #161313;
  --surface: #1a1e29;
  --surface-2: #20242f;
  --fg: #e8ebf2;
  --muted: #9aa3b6;
  --line: #2a3040;
  --accent: #6f8bff;
  --accent-2: #8aa2ff;
  --accent-ink: #0f1117;
  --ok: #43d089;
  --err: #ff6b6f;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.35);
  --shadow-lg: 0 16px 40px rgba(0,0,0,.5);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 15px/1.6 ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background:
    radial-gradient(1200px 600px at 100% -10%, var(--bg-grad2), transparent 60%),
    radial-gradient(1100px 600px at -10% 0%, var(--bg-grad1), transparent 55%),
    var(--bg);
  min-height: 100vh;
}

/* ---- top bar ---------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 12px 22px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-weight: 800; letter-spacing: -.02em; font-size: 17px;
  color: var(--fg); text-decoration: none;
}
.brand::before {
  content: ""; width: 18px; height: 18px; border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 45%, transparent);
}
.level-badge {
  font-size: 12px; font-weight: 700; letter-spacing: .02em;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-ink); padding: 3px 10px; border-radius: 999px;
}
.topbar nav { margin-left: auto; display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.topbar nav a {
  color: var(--muted); text-decoration: none; font-weight: 600; font-size: 14px;
  padding: 7px 11px; border-radius: 9px; transition: background .15s, color .15s;
}
.topbar nav a:hover { color: var(--fg); background: var(--surface-2); }
.who { color: var(--muted); font-size: 13px; padding: 0 6px; }
.inline { display: inline; margin: 0; }
.linkbtn {
  background: none; border: 1px solid var(--line); color: var(--fg);
  cursor: pointer; font: inherit; font-size: 14px; font-weight: 600;
  padding: 6px 12px; border-radius: 9px; transition: border-color .15s, background .15s;
}
.linkbtn:hover { background: var(--surface-2); border-color: var(--accent); }

/* ---- layout ----------------------------------------------------------- */
main { max-width: 760px; margin: 34px auto; padding: 0 22px; }
h1 { margin: 0 0 6px; font-size: 28px; letter-spacing: -.02em; }
h2 { letter-spacing: -.01em; }
h3 { margin: 0 0 8px; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.error { color: var(--err); font-weight: 600; }
.ok { color: var(--ok); font-weight: 600; }
.error::before { content: "⚠ "; }
.ok::before { content: "✓ "; }

/* ---- buttons ---------------------------------------------------------- */
.btn, .form button {
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; font: inherit; font-weight: 700; font-size: 14px;
  padding: 10px 18px; border: none; border-radius: 10px;
  color: var(--accent-ink);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 2px 10px color-mix(in srgb, var(--accent) 35%, transparent);
  text-decoration: none; transition: transform .08s, box-shadow .15s, filter .15s;
}
.btn:hover, .form button:hover { filter: brightness(1.05); box-shadow: 0 4px 16px color-mix(in srgb, var(--accent) 45%, transparent); }
.btn:active, .form button:active { transform: translateY(1px); }
.btn.secondary { background: var(--surface); color: var(--fg); border: 1px solid var(--line); box-shadow: none; }

/* ---- forms ------------------------------------------------------------ */
.form { display: flex; flex-direction: column; gap: 14px; max-width: 440px; margin-top: 18px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--muted); }
.form input, .form textarea {
  padding: 11px 13px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface); color: var(--fg); font: inherit;
  transition: border-color .15s, box-shadow .15s;
}
.form input:focus, .form textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.form textarea { resize: vertical; }
.form button { align-self: flex-start; }

/* ---- cards / dashboard ------------------------------------------------ */
.cards { list-style: none; padding: 0; margin: 22px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.cards a {
  display: block; padding: 18px; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
  text-decoration: none; color: var(--fg); box-shadow: var(--shadow);
  transition: transform .12s, box-shadow .15s, border-color .15s;
}
.cards a:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.cards h3 { margin: 0 0 4px; font-size: 16px; }
.cards p { margin: 0; color: var(--muted); font-size: 13px; }

/* ---- panels ----------------------------------------------------------- */
.profile-card, .note-preview, .apikey-box {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
}
.profile-card { margin-bottom: 20px; }
.avatar { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; border: 2px solid var(--line); }
.address-block { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line); }
.note-preview { margin-top: 12px; }

.apikey-box {
  display: flex; align-items: center; gap: 10px;
  background: var(--surface-2); font-size: 15px; word-break: break-all;
}
.apikey-box code, code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px;
}
code:not(.apikey-box code) { background: var(--surface-2); padding: 2px 6px; border-radius: 6px; border: 1px solid var(--line); }

/* ---- footer ----------------------------------------------------------- */
.foot { text-align: center; color: var(--muted); padding: 36px 22px; font-size: 12.5px; }

@media (max-width: 560px) {
  .cards { grid-template-columns: 1fr; }
  main { margin: 22px auto; }
  h1 { font-size: 23px; }
}