:root {
  --bg: #f7f9fc;
  --card: #ffffff;
  --card-alt: #eef3fb;
  --text: #0f1b2d;
  --muted: #5b6b82;
  --border: #d6dee8;
  --btn: #1e3a8a;
  --btn2: #e6efff;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: var(--bg);
  color: var(--text);
}

a { color: inherit; }

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 18px;
}

.shell {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.badge {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 999px;
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.button {
  border: 1px solid var(--border);
  background: var(--btn2);
  color: var(--btn);
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

.button.primary {
  background: linear-gradient(180deg, #2b4fb2, var(--btn));
  border-color: rgba(30, 58, 138, 0.4);
  color: #ffffff;
}

.button:disabled { opacity: 0.5; cursor: not-allowed; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.stack > * + * {
  margin-top: 12px;
}

@media (min-width: 900px) {
  .grid.two { grid-template-columns: 1fr 1fr; }
}

.h1 { font-size: 28px; margin: 0 0 6px; }
.h2 { font-size: 18px; margin: 0 0 10px; color: var(--muted); font-weight: 600; }
.p { margin: 0; color: var(--muted); line-height: 1.5; }
.small { font-size: 12px; color: var(--muted); }

.input {
  width: 100%;
  background: #f8fbff;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 12px;
  border-radius: 12px;
  outline: none;
}

.input:focus {
  border-color: rgba(37, 99, 235, 0.7);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

hr.sep {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 14px 0;
}

.kv {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;
  font-size: 14px;
}
.kv div:first-child { color: var(--muted); }

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(15, 23, 42, 0.15);
  z-index: 999;
}

.modal.open {
  display: flex;
}

.modal-card {
  width: min(680px, 100%);
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
}

.status-flow {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.status-step {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
  background: var(--card-alt);
}

.status-step.active {
  color: #1e3a8a;
  border-color: rgba(30, 58, 138, 0.4);
  background: rgba(30, 58, 138, 0.08);
}

.status-step.complete {
  color: #14532d;
  border-color: rgba(20, 83, 45, 0.35);
  background: rgba(22, 163, 74, 0.12);
}

.timeline {
  display: grid;
  gap: 10px;
}

.timeline-row {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 10px;
  align-items: start;
}

.timeline-time {
  font-size: 12px;
  color: var(--muted);
}

.timeline-block {
  background: var(--card-alt);
  border: 1px dashed rgba(30, 58, 138, 0.25);
  border-radius: 12px;
  padding: 10px;
}

.timeline-block .small {
  display: block;
}

.notification-feed {
  display: grid;
  gap: 10px;
}

.notification-item {
  background: var(--card-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  font-size: 13px;
  color: var(--text);
}

.notification-item strong {
  display: block;
  margin-bottom: 4px;
  color: #1e3a8a;
}

.conversation-list {
  display: grid;
  gap: 10px;
}

.conversation-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  cursor: pointer;
  background: var(--card-alt);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.conversation-item.active {
  border-color: rgba(30, 58, 138, 0.4);
  background: rgba(30, 58, 138, 0.08);
}

.conversation-meta {
  display: grid;
  gap: 4px;
}

.badge-dot {
  background: #1e3a8a;
  color: #fff;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  align-self: start;
}

.chat-window {
  display: grid;
  gap: 10px;
  min-height: 220px;
}

.chat-bubble {
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--card-alt);
  border: 1px solid var(--border);
  max-width: 85%;
}

.chat-bubble.me {
  background: rgba(30, 58, 138, 0.12);
  border-color: rgba(30, 58, 138, 0.35);
  margin-left: auto;
}

@media (max-width: 720px) {
  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .row {
    width: 100%;
  }

  .button {
    width: 100%;
    justify-content: center;
  }

  .kv {
    grid-template-columns: 1fr;
  }
}