:root {
  --bg: #f5f6f8; --panel: #ffffff; --ink: #1f2430; --muted: #6b7280;
  --line: #e3e6ea; --brand: #2b5cff; --brand-ink: #ffffff;
  --ok: #1a8754; --warn: #b8860b; --bad: #c0392b; --chip: #eef1f6;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.45 "Segoe UI", system-ui, sans-serif; color: var(--ink); background: var(--bg); }
a { color: var(--brand); text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* Top bar */
.topbar { display: flex; align-items: center; gap: 16px; padding: 10px 18px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.topbar .logo { font-weight: 700; letter-spacing: .2px; }
.topbar .logo span { color: var(--brand); }
.topbar .spacer { flex: 1; }
.role { display: flex; align-items: center; gap: 8px; }
.role select, .role .who { padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }

/* Layout */
.app { display: grid; grid-template-columns: 210px 1fr; min-height: calc(100vh - 53px); }
.nav { border-right: 1px solid var(--line); background: var(--panel); padding: 12px; }
.nav a { display: block; padding: 9px 12px; border-radius: 8px; color: var(--ink); margin-bottom: 4px; }
.nav a.active, .nav a:hover { background: var(--chip); color: var(--brand); }
.main { padding: 20px 24px; }

/* Panels & tables */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin-bottom: 16px; }
h1 { font-size: 20px; margin: 0 0 14px; }
h2 { font-size: 16px; margin: 0 0 10px; }
h3 { font-size: 14px; margin: 14px 0 8px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
tr.clickable:hover { background: var(--chip); cursor: pointer; }

/* Form */
label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }
input, select, textarea { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; font: inherit; }
textarea { min-height: 90px; resize: vertical; }
.row { display: flex; gap: 14px; }
.row > div { flex: 1; }

/* Buttons & chips */
.btn { background: var(--brand); color: var(--brand-ink); border: none; border-radius: 8px; padding: 9px 14px; }
.btn.secondary { background: #eef1f6; color: var(--ink); }
.btn.ok { background: var(--ok); } .btn.bad { background: var(--bad); } .btn.warn { background: var(--warn); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btnbar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.badge { display: inline-flex; align-items: center; justify-content: center; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 999px; background: var(--brand); color: #fff; font-size: 11px; font-weight: 700; margin-left: 6px; vertical-align: middle; }
.chip { display: inline-block; padding: 2px 9px; border-radius: 999px; background: var(--chip); font-size: 12px; }
.chip.status { background: #e7efff; color: var(--brand); }
.chip.bug { background: #fdeaea; color: var(--bad); }
.chip.wish { background: #e9f7ef; color: var(--ok); }
.muted { color: var(--muted); }
.meta { display: flex; gap: 18px; flex-wrap: wrap; margin: 6px 0 2px; }
.meta b { font-weight: 600; }

/* Chat */
.prewrap { white-space: pre-wrap; }
.msg { padding: 8px 12px; border-radius: 10px; margin: 6px 0; max-width: 75%; white-space: pre-wrap; }
.msg.them { background: var(--chip); }
.msg.me { background: #e7efff; margin-left: auto; }
.msg .who { font-size: 11px; color: var(--muted); margin-bottom: 2px; }

.hint { background: #f0f4ff; border: 1px solid #dbe4ff; color: #33415c; padding: 8px 12px; border-radius: 8px; margin: 4px 0 8px; font-size: 13px; }
textarea.big { min-height: 260px; }
.att-list { margin: 0; padding-left: 18px; }
.att-list li { margin: 4px 0; }
.comment { border-left: 3px solid var(--brand); background: #fafbfc; padding: 8px 12px; margin: 0 0 12px; border-bottom: 1px solid var(--line); border-radius: 6px; }
.comment + .comment { margin-top: 0; }
.comment.internal { border-left-color: var(--warn); background: #fffdf5; }
.steps li { margin-bottom: 6px; }
.empty { color: var(--muted); padding: 20px; text-align: center; }
.err { color: var(--bad); padding: 8px 0; }