/* DSH Auth pages — 简洁深色主题 */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #0d1117;
  --panel: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #4d6bfe;
  --accent-hover: #3b5bf5;
  --danger: #f85149;
  --ok: #3fb950;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #1f2937 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 100%;
  max-width: 400px;
  padding: 36px 32px;
  box-shadow: 0 8px 40px rgba(0,0,0,.45);
}
.brand { text-align: center; margin-bottom: 24px; }
.brand .logo {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(135deg, #4d6bfe, #8b5cf6);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 22px; color: #fff; margin-bottom: 12px;
}
.brand h1 { font-size: 20px; font-weight: 600; letter-spacing: .5px; }
.brand p { color: var(--muted); font-size: 13px; margin-top: 6px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input {
  width: 100%; padding: 10px 12px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 14px;
  outline: none; transition: border-color .15s;
}
.field input:focus { border-color: var(--accent); }
.hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.btn {
  width: 100%; padding: 11px; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 15px; font-weight: 600;
  cursor: pointer; transition: background .15s; margin-top: 4px;
}
.btn:hover { background: var(--accent-hover); }
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn-gh {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  background: #21262d; border: 1px solid var(--border); color: var(--text);
  margin-top: 12px; font-weight: 500;
}
.btn-gh:hover { background: #282e36; border-color: #8b949e; }
.btn-gh svg { width: 18px; height: 18px; fill: currentColor; }
.divider {
  display: flex; align-items: center; gap: 12px; color: var(--muted);
  font-size: 12px; margin: 18px 0;
}
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.msg {
  display: none; padding: 10px 12px; border-radius: 8px;
  font-size: 13px; margin-bottom: 16px; line-height: 1.5;
}
.msg.error { display: block; background: rgba(248,81,73,.1); border: 1px solid rgba(248,81,73,.4); color: var(--danger); }
.msg.info { display: block; background: rgba(63,185,80,.1); border: 1px solid rgba(63,185,80,.4); color: var(--ok); }
.footer { text-align: center; margin-top: 20px; font-size: 13px; color: var(--muted); }
.footer a { color: var(--accent); text-decoration: none; }
.footer a:hover { text-decoration: underline; }