:root {
  --bg: #0d0f14;
  --panel: #161a22;
  --panel-2: #1d222c;
  --border: #2a303c;
  --text: #e6e9ef;
  --muted: #8b94a6;
  --accent: #5b8def;
  --danger: #e05a5a;
  --ok: #3fb984;
  --radius: 14px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}
.hidden { display: none !important; }

/* Login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 28px; width: 100%; max-width: 360px; display: flex; flex-direction: column; gap: 14px;
}
.login-logo { font-size: 22px; font-weight: 700; letter-spacing: .5px; }
.login-sub { margin: -8px 0 8px; color: var(--muted); font-size: 13px; }
.login input, .login button { padding: 12px 14px; border-radius: 10px; font-size: 15px; }
.login input { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
.login button { background: var(--accent); color: #fff; border: 0; font-weight: 600; cursor: pointer; }
.login-error { color: var(--danger); font-size: 13px; min-height: 18px; }

/* Topbar */
.topbar {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: rgba(13,15,20,.9); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; letter-spacing: .5px; }
.topbar-actions { display: flex; gap: 6px; }
.icon-btn {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  width: 38px; height: 38px; border-radius: 10px; font-size: 16px; cursor: pointer;
}
.icon-btn.active { border-color: var(--accent); color: var(--accent); }

/* Filters */
.filters { display: flex; gap: 8px; overflow-x: auto; padding: 12px 16px; scrollbar-width: none; }
.filters::-webkit-scrollbar { display: none; }
.chip {
  white-space: nowrap; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--panel); color: var(--muted); font-size: 13px; cursor: pointer; display: flex; gap: 6px; align-items: center;
}
.chip.active { color: var(--text); border-color: currentColor; }
.chip .count { background: var(--panel-2); border-radius: 999px; padding: 0 7px; font-size: 11px; }

/* Cards */
.cards { max-width: 720px; margin: 0 auto; padding: 8px 16px 60px; display: flex; flex-direction: column; gap: 16px; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; scroll-margin-top: 120px;
}
.card.flash { animation: flash 1.4s ease; }
@keyframes flash { 0%,100% { border-color: var(--border); } 30% { border-color: var(--accent); } }
.card-head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.card-agent { width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center; font-size: 16px; }
.card-titles { flex: 1; min-width: 0; }
.card-title { font-weight: 600; }
.card-meta { color: var(--muted); font-size: 12px; }
.card-body { padding: 14px 16px; display: flex; flex-direction: column; gap: 14px; }
.md { word-wrap: break-word; }
.md h1, .md h2, .md h3 { margin: .4em 0 .3em; line-height: 1.25; }
.md p { margin: .4em 0; }
.md ul, .md ol { margin: .4em 0; padding-left: 1.3em; }
.md code { background: var(--panel-2); padding: 1px 5px; border-radius: 5px; font-size: 13px; }
.md pre { background: var(--panel-2); padding: 12px; border-radius: 10px; overflow-x: auto; }
.md a { color: var(--accent); }
.md blockquote { border-left: 3px solid var(--border); margin: .4em 0; padding-left: 12px; color: var(--muted); }

/* Form */
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; color: var(--muted); }
.field input, .field textarea, .field select {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 10px 12px; font-size: 15px; font-family: inherit; width: 100%;
}
.field textarea { min-height: 80px; resize: vertical; }
.field .opts { display: flex; flex-wrap: wrap; gap: 8px; }
.field .opt { display: flex; align-items: center; gap: 6px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; cursor: pointer; }
.field .scale { display: flex; gap: 6px; }
.field .scale button { flex: 1; padding: 10px 0; background: var(--panel-2); border: 1px solid var(--border); color: var(--text); border-radius: 10px; cursor: pointer; }
.field .scale button.sel { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }
.btn {
  padding: 11px 16px; border-radius: 10px; border: 0; font-weight: 600; cursor: pointer; font-size: 14px;
  background: var(--accent); color: #fff;
}
.btn.secondary { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
.btn.danger { background: transparent; border: 1px solid var(--danger); color: var(--danger); }
.btn:disabled { opacity: .5; cursor: default; }

.badge { font-size: 11px; padding: 2px 8px; border-radius: 999px; }
.badge.answered { background: rgba(63,185,132,.15); color: var(--ok); }
.card-invalid { color: var(--danger); font-size: 13px; background: rgba(224,90,90,.08); padding: 10px 12px; border-radius: 10px; }

.empty { text-align: center; color: var(--muted); padding: 60px 20px; }
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 12px 18px; border-radius: 12px; z-index: 50; max-width: 90vw;
}
.toast.err { border-color: var(--danger); }
.toast.ok { border-color: var(--ok); }