/*
 * Yanling research dashboard theme
 *
 * This file is intentionally independent from Bootstrap and feature CSS.  It
 * provides the shared visual language for the original site and the portable
 * demo build, while leaving navigation structure and feature behavior intact.
 */
:root {
  --research-ink: #17253a;
  --research-muted: #68798d;
  --research-line: #dbe5ee;
  --research-line-strong: #c5d4e2;
  --research-surface: #ffffff;
  --research-canvas: #f3f7fa;
  --research-navy: #12355b;
  --research-blue: #1769aa;
  --research-cyan: #087e8b;
  --research-cyan-soft: #e7f6f7;
  --research-focus: rgba(23, 105, 170, .18);
}

html { background: var(--research-canvas); }
body {
  background: var(--research-canvas);
  color: var(--research-ink);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  letter-spacing: .005em;
}

body > nav.navbar {
  min-height: 64px;
  background: linear-gradient(105deg, #102e50 0%, #164c75 62%, #087e8b 100%) !important;
  border-bottom: 1px solid rgba(149, 220, 226, .25);
  box-shadow: 0 2px 12px rgba(22, 53, 82, .12);
}
body > nav.navbar .container-fluid { padding-left: clamp(1rem, 2.5vw, 2.6rem); padding-right: clamp(1rem, 2.5vw, 2.6rem); }
body > nav.navbar .navbar-brand { font-weight: 750; letter-spacing: .03em; }
body > nav.navbar .nav-link { border-radius: 7px; padding: .52rem .72rem; color: rgba(255,255,255,.82); transition: background .16s ease, color .16s ease; }
body > nav.navbar .nav-link:hover, body > nav.navbar .nav-link.active { color: #fff; background: rgba(255,255,255,.14); }
body > nav.navbar .navbar-toggler { border-color: rgba(255,255,255,.3); }

.sidebar {
  background: rgba(255,255,255,.94);
  border-right: 1px solid var(--research-line);
  box-shadow: none;
  height: calc(100vh - 64px);
  top: 64px;
  padding: 0 8px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #c9d9e7 transparent;
}
.sidebar .pt-3 { padding-top: .75rem !important; padding-bottom: 1rem; }
.sidebar .nav-link,
.offcanvas-sidebar .nav-link {
  display: flex;
  align-items: center;
  gap: .75rem;
  min-height: 48px;
  margin: 3px 0;
  padding: .7rem .85rem;
  border-left: 3px solid transparent;
  border-radius: 9px;
  color: #334d68;
  font-size: 1.0625rem;
  font-weight: 500;
  line-height: 1.4;
  text-align: left;
  white-space: nowrap;
}
.research-navigation .nav-link i { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 24px; width: 24px; margin: 0; font-size: 1.25rem; color: #2475b6; }
.research-navigation .nav-link:hover { background: #edf5fc; color: var(--research-navy); }
.research-navigation .nav-link.active { background: #e8f2fc; border-left-color: #2475b6; color: #14558d; font-weight: 700; }
.research-navigation .nav-link:focus-visible { outline: 2px solid #2475b6; outline-offset: -2px; }
.research-navigation .admin-nav-item .nav-link i { color: #be4c5a; }
.research-navigation .admin-nav-item .nav-link:hover { background: #fff2f3; }
.research-navigation .admin-nav-item .nav-link.active { background: #fcecef; border-left-color: #be4c5a; color: #963a48; }
.research-navigation .nav-section-label { margin: .9rem .8rem .4rem; padding-top: .85rem; border-top: 1px solid var(--research-line); color: #926470; font-size: .875rem; font-weight: 600; }

.offcanvas-sidebar { border-right: 1px solid var(--research-line); }
.offcanvas-sidebar .research-navigation { padding: .25rem .75rem 1.25rem; }
.main-content { min-width: 0; padding: clamp(1rem, 2vw, 2rem) clamp(1rem, 2.6vw, 2.8rem) 7rem; }
@media (min-width: 992px) {
  .sidebar { flex: 0 0 216px; width: 216px; }
  .sidebar ~ .main-content { flex: 1 1 0; width: calc(100% - 216px); }
}

.card, .list-group, .table-responsive, .modal-content, .dropdown-menu {
  border: 1px solid var(--research-line);
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(32, 67, 98, .045);
}
.card { margin-bottom: 1.2rem; }
.card-header { border-bottom: 1px solid var(--research-line); background: #fbfdfe; color: var(--research-navy); }
.card-body { min-width: 0; }
.table { --bs-table-color: var(--research-ink); --bs-table-border-color: var(--research-line); }
.table thead th { color: #52677d; background: #f6fafc; font-size: .76rem; font-weight: 750; white-space: nowrap; }
.table > :not(caption) > * > * { padding: .72rem .8rem; }
.form-control, .form-select { border-color: var(--research-line-strong); border-radius: 8px; color: var(--research-ink); }
.form-control:focus, .form-select:focus { border-color: #4aa9bb; box-shadow: 0 0 0 .2rem var(--research-focus); }
.btn { border-radius: 8px; font-weight: 650; }
.btn-primary { --bs-btn-bg: var(--research-blue); --bs-btn-border-color: var(--research-blue); --bs-btn-hover-bg: #12578d; --bs-btn-hover-border-color: #12578d; }
.btn-outline-primary { --bs-btn-color: var(--research-blue); --bs-btn-border-color: #76aeca; --bs-btn-hover-bg: var(--research-blue); --bs-btn-hover-border-color: var(--research-blue); }
.badge { border-radius: 999px; font-weight: 650; }
.alert { border: 1px solid var(--research-line); border-radius: 10px; box-shadow: none; }

/* The cockpit should use the full content column on wide screens. */
.agent-cockpit-full { width: 100% !important; max-width: none !important; margin-left: 0 !important; margin-right: 0 !important; }
.agent-cockpit-full .agent-topbar,
.agent-cockpit-full .agent-cockpit-header,
.agent-cockpit-full .agent-workspace-layout,
.agent-cockpit-full .agent-lower-grid { width: 100%; max-width: none; }
.agent-portal { color: var(--research-ink); }
.agent-panel { border: 1px solid var(--research-line) !important; border-radius: 13px !important; box-shadow: 0 4px 16px rgba(32, 67, 98, .055) !important; }
.agent-panel-heading { border-bottom-color: var(--research-line) !important; }
.agent-kicker { color: var(--research-cyan) !important; letter-spacing: .1em; }
.agent-chat-agent, .agent-chat-user { border-color: var(--research-line) !important; }

.footer { margin-top: auto; border-top: 1px solid var(--research-line); background: #fbfdfe; color: var(--research-muted); }

@media (max-width: 1100px) {
  .main-content { padding-left: 1rem; padding-right: 1rem; }
  body > nav.navbar .nav-link { padding-left: .55rem; padding-right: .55rem; }
}
@media (max-width: 991.98px) {
  body > nav.navbar .container-fluid { min-width: 0; }
  body > nav.navbar .navbar-brand { min-width: 0; flex: 1 1 0; margin-right: .5rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}
@media (max-width: 820px) {
  .main-content { padding-top: 1rem; padding-bottom: 5rem; }
  .agent-cockpit-full { width: 100% !important; }
  .card { border-radius: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}