:root {
  --bg: #0e0f12;
  --card: #15171c;
  --muted: #8b919b;
  --text: #e7eaef;
  --accent: #c8a96a;
  --accent-fg: #15171c;
  --error: #ff6961;
  --border: #262932;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui, sans-serif; }
body { display: flex; align-items: center; justify-content: center; padding: 16px; }
.card { width: 100%; max-width: 420px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 32px 28px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.brand { text-align: center; margin-bottom: 28px; }
.logo { width: 56px; height: 56px; line-height: 56px; margin: 0 auto 12px; border-radius: 12px; background: var(--accent); color: var(--accent-fg); font-weight: 800; font-size: 28px; letter-spacing: 0.5px; }
.brand h1 { font-size: 18px; font-weight: 600; margin: 0 0 6px; letter-spacing: 0.3px; }
.subtitle { color: var(--muted); font-size: 13px; margin: 0; }
form { display: flex; flex-direction: column; gap: 10px; }
label { font-size: 12px; color: var(--muted); margin-top: 4px; }
input { background: #0e1014; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 12px 14px; font-size: 15px; outline: none; transition: border-color .15s; }
input:focus { border-color: var(--accent); }
input:invalid:not(:placeholder-shown) { border-color: var(--error); }
button { background: var(--accent); color: var(--accent-fg); border: 0; border-radius: 8px; padding: 12px 14px; font-size: 14px; font-weight: 600; cursor: pointer; transition: filter .15s; margin-top: 8px; }
button:hover:not(:disabled) { filter: brightness(1.05); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.link { background: transparent; color: var(--muted); margin-top: 4px; font-weight: 400; }
.hint { color: var(--muted); font-size: 13px; margin: 0 0 4px; }
.msg { min-height: 18px; margin: 14px 0 0; font-size: 13px; color: var(--error); text-align: center; }
.msg.ok { color: #7dc97a; }