:root {
  --paper: #f4f7f8;
  --paper-deep: #e9f0f3;
  --ink: #17222e;
  --muted: #5d6a76;
  --line: rgba(23, 34, 46, 0.13);
  --line-strong: rgba(23, 34, 46, 0.24);
  --chem: #1a5fa8;
  --chem-dark: #114678;
  --chem-pale: #e6f0fa;
  --green: #2a7d3f;
  --green-pale: #eaf5ed;
  --red: #c0392b;
  --red-pale: #faecea;
  --gold: #b58a18;
  color: var(--ink);
  font-family: "DM Sans", "Noto Sans HK", system-ui, sans-serif;
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(26, 95, 168, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 95, 168, 0.055) 1px, transparent 1px);
  background-size: 26px 26px;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
button, input, select, textarea { font: inherit; }
button, .tabs a, .admin-nav a {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  padding: 0.7rem 1rem;
  cursor: pointer;
  text-decoration: none;
}
button:hover, .tabs a:hover, .admin-nav a:hover { border-color: var(--chem); }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid rgba(26, 95, 168, 0.22);
  outline-offset: 2px;
}
button:disabled { cursor: not-allowed; opacity: 0.55; }
button[type="submit"], .primary { background: var(--chem); border-color: var(--chem); color: white; }
button[type="submit"]:hover { background: var(--chem-dark); }
.danger { color: var(--red); border-color: rgba(192, 57, 43, 0.35); }

.site-header {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: rgba(244, 247, 248, 0.94);
  backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 0.75rem; color: inherit; text-decoration: none; }
.brand > span:last-child { display: grid; }
.brand b { font-family: Archivo, system-ui, sans-serif; font-size: 1.05rem; text-transform: uppercase; letter-spacing: 0.06em; }
.brand small, .identity { color: var(--muted); }
.al-tile {
  position: relative;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: white;
  background: linear-gradient(145deg, #2677c5, #124675);
  box-shadow: 0 7px 18px rgba(26, 95, 168, 0.22);
}
.al-tile small { position: absolute; left: 6px; top: 4px; color: white; font-size: 0.58rem; }
.al-tile strong { font-family: Archivo, system-ui, sans-serif; font-size: 1.45rem; }

.portal-shell, .admin-grid { width: min(1180px, calc(100% - 2rem)); margin: 2rem auto 4rem; }
.tabs { display: flex; align-items: center; gap: 0.55rem; margin-bottom: 1.5rem; }
.tabs button span { margin-right: 0.35rem; color: var(--muted); font: 700 0.66rem "DM Mono", monospace; }
.tabs .active { color: white; background: var(--ink); border-color: var(--ink); }
.tabs .active span { color: #b9d5ef; }
.tabs a { margin-left: auto; }
.view-heading, .panel-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.view-heading h1, .panel h1, .panel h2, .save-dialog h2 { margin: 0.15rem 0; font-family: Archivo, system-ui, sans-serif; }
.view-heading > p, .panel-heading > p { max-width: 32rem; color: var(--muted); margin: 0 0 0.25rem; text-align: right; }
.eyebrow { margin: 0; color: var(--chem); font: 700 0.72rem/1.4 "DM Mono", monospace; letter-spacing: 0.1em; }
.eyebrow::before { content: "⬡ "; }

.card-list, .review-list { display: grid; gap: 0.8rem; }
.card, .panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 28px rgba(23, 34, 46, 0.05);
  padding: 1rem;
}
.card { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 1rem; }
.card h2, .card h3, .history-item h3 { margin: 0 0 0.35rem; font-size: 1.03rem; }
.card p { margin: 0.2rem 0; color: var(--muted); }
.meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; color: var(--muted); font-size: 0.86rem; }
.status { display: inline-block; border: 1px solid var(--line); border-radius: 999px; padding: 0.2rem 0.6rem; font: 700 0.72rem "DM Mono", monospace; text-transform: uppercase; }
.status.submitted, .status.approved, .status.closed { color: var(--green); border-color: rgba(42, 125, 63, 0.35); }
.status.open, .status.rejected { color: var(--red); border-color: rgba(192, 57, 43, 0.35); }
.status.reviewed, .status.pending { color: var(--gold); border-color: rgba(181, 138, 24, 0.4); }
.decision-box { grid-column: 1 / -1; border-left: 3px solid var(--chem); background: var(--chem-pale); padding: 0.75rem 0.9rem; }
.decision-box.approved { border-color: var(--green); background: var(--green-pale); }
.decision-box.rejected { border-color: var(--red); background: var(--red-pale); }
.decision-box p { color: var(--ink); }
.empty { color: var(--muted); padding: 2rem; text-align: center; border: 1px dashed var(--line-strong); border-radius: 12px; }

.submit-grid { display: grid; grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr); gap: 1rem; align-items: start; }
.stack { display: grid; gap: 0.85rem; }
label { display: grid; gap: 0.35rem; color: var(--muted); font-size: 0.85rem; font-weight: 700; }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; background: white; color: var(--ink); padding: 0.72rem; }
textarea { resize: vertical; }
.notice { min-height: 1.25rem; margin: 0; color: var(--muted); }
.notice.error { color: var(--red); }
.notice.success { color: var(--green); }
.history-list { display: grid; gap: 0.65rem; }
.history-item { border-top: 1px solid var(--line); padding-top: 0.65rem; }
.history-item:first-child { border-top: 0; padding-top: 0; }
.attribution { font-family: "DM Mono", monospace; color: var(--chem); }

.transparency-note {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
  border: 1px solid rgba(181, 138, 24, 0.35);
  border-left: 5px solid var(--gold);
  border-radius: 10px;
  background: rgba(255, 249, 225, 0.92);
  padding: 0.8rem 1rem;
  color: #5c4816;
}
.session-label { font: 700 0.72rem "DM Mono", monospace; }
.chat-sheet {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(90deg, transparent 72px, rgba(192, 57, 43, 0.2) 72px, rgba(192, 57, 43, 0.2) 74px, transparent 74px),
    rgba(255, 255, 255, 0.96);
  box-shadow: 0 16px 38px rgba(23, 34, 46, 0.08);
}
.chat-sheet::before {
  content: "TRANSCRIPT / PRIVATE";
  position: absolute;
  top: 1rem;
  left: 1rem;
  color: rgba(192, 57, 43, 0.62);
  font: 700 0.56rem "DM Mono", monospace;
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
}
.chat-thread { min-height: 340px; max-height: 58vh; overflow-y: auto; padding: 1.35rem 1.35rem 1.35rem 94px; }
.chat-message { position: relative; max-width: 760px; margin-bottom: 1.15rem; }
.chat-message.user { margin-left: auto; border-right: 4px solid var(--ink); padding-right: 0.85rem; }
.chat-message.agent { border-left: 4px solid var(--chem); padding-left: 0.85rem; }
.chat-message .message-label { margin-bottom: 0.35rem; color: var(--muted); font: 700 0.68rem "DM Mono", monospace; letter-spacing: 0.05em; text-transform: uppercase; }
.chat-message.user .message-label { text-align: right; }
.chat-message .message-body { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.58; }
.chat-message.agent .message-body { background: var(--chem-pale); border-radius: 3px 10px 10px 10px; padding: 0.85rem; }
.chat-message.user .message-body { background: var(--paper-deep); border-radius: 10px 3px 10px 10px; padding: 0.85rem; }
.message-actions { display: flex; justify-content: flex-start; margin-top: 0.5rem; }
.message-actions button { padding: 0.45rem 0.7rem; font-size: 0.8rem; }
.chat-composer { border-top: 1px solid var(--line); background: rgba(244, 247, 248, 0.94); padding: 1rem 1.35rem 1rem 94px; }
.composer-actions { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-top: 0.7rem; }

.save-dialog { width: min(720px, calc(100% - 2rem)); border: 1px solid var(--line-strong); border-radius: 14px; color: var(--ink); background: var(--paper); padding: 1.25rem; box-shadow: 0 24px 80px rgba(23, 34, 46, 0.24); }
.save-dialog::backdrop { background: rgba(23, 34, 46, 0.52); backdrop-filter: blur(4px); }
.dialog-copy { color: var(--muted); margin: 0.45rem 0 0; }
.agent-preview { max-height: 260px; overflow: auto; white-space: pre-wrap; border: 1px solid var(--line); border-radius: 8px; background: white; padding: 0.85rem; font: 0.82rem/1.5 "DM Mono", monospace; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 0.6rem; }

.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.admin-grid .wide, .admin-nav { grid-column: 1 / -1; }
.admin-nav { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 0.84rem; }
.admin-nav a { padding: 0.5rem 0.75rem; }
.history-controls { display: flex; align-items: end; gap: 0.55rem; }
.history-controls label { min-width: 220px; }
.review-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 0.7fr); gap: 1rem; border: 1px solid var(--line); border-radius: 10px; padding: 1rem; background: var(--paper); }
.review-card.pending { border-left: 5px solid var(--gold); }
.review-card.approved { border-left: 5px solid var(--green); }
.review-card.rejected { border-left: 5px solid var(--red); }
.review-card h3 { margin: 0 0 0.4rem; }
.review-card p { margin: 0.3rem 0; }
.review-actions { display: grid; gap: 0.55rem; align-content: start; }
.review-actions textarea { min-height: 84px; }
.review-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.decision-record { border: 1px solid var(--line); border-radius: 8px; background: white; padding: 0.75rem; }
.usage-board { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; }
.usage-card { border-top: 4px solid var(--chem); background: var(--paper); padding: 0.9rem; }
.usage-card h3 { margin: 0; }
.usage-total { margin: 0.3rem 0; font: 800 clamp(1.25rem, 3vw, 2rem) Archivo, system-ui, sans-serif; }
.usage-days { display: grid; gap: 0.3rem; margin-top: 0.7rem; }
.usage-day { display: grid; grid-template-columns: 1fr auto auto; gap: 0.75rem; border-top: 1px solid var(--line); padding-top: 0.35rem; color: var(--muted); font-size: 0.8rem; }
.admin-chat { min-height: 220px; max-height: 520px; margin-top: 0.8rem; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); padding: 1rem; }
.admin-chat .chat-message { max-width: 880px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { border-bottom: 1px solid var(--line); padding: 0.65rem; text-align: left; vertical-align: top; }
th { color: var(--muted); font: 700 0.7rem "DM Mono", monospace; text-transform: uppercase; }

@media (max-width: 760px) {
  .site-header { align-items: flex-start; }
  .identity { max-width: 46vw; text-align: right; font-size: 0.78rem; }
  .portal-shell, .admin-grid { width: min(100% - 1rem, 1180px); margin-top: 0.75rem; }
  .tabs { position: sticky; top: 0; z-index: 5; overflow-x: auto; padding: 0.45rem; background: rgba(244, 247, 248, 0.96); border: 1px solid var(--line); border-radius: 10px; }
  .tabs button { white-space: nowrap; padding: 0.62rem 0.7rem; }
  .tabs button span { display: none; }
  .view-heading, .panel-heading, .transparency-note { align-items: start; flex-direction: column; }
  .view-heading > p, .panel-heading > p { text-align: left; }
  .submit-grid, .admin-grid, .review-card, .usage-board { grid-template-columns: 1fr; }
  .admin-grid .wide, .admin-nav { grid-column: auto; }
  .card { grid-template-columns: 1fr; }
  .chat-sheet { background: rgba(255, 255, 255, 0.96); }
  .chat-sheet::before { display: none; }
  .chat-thread, .chat-composer { padding-left: 1rem; padding-right: 1rem; }
  .chat-thread { min-height: 300px; max-height: 54vh; }
  .composer-actions, .admin-nav, .history-controls { align-items: stretch; flex-direction: column; }
  .history-controls label { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}