/* ===== 联强慧管+ v5 完整设计系统 ===== */
:root {
  /* Brand */
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #3B82F6;
  --primary-lighter: #60A5FA;
  --primary-bg: #EFF6FF;
  --primary-ring: rgba(37,99,235,0.15);

  /* Semantic */
  --success: #10B981; --success-bg: #ECFDF5;
  --warning: #F59E0B; --warning-bg: #FFFBEB;
  --danger: #EF4444; --danger-bg: #FEF2F2; --danger-hover: #DC2626;
  --info: #0EA5E9; --info-bg: #F0F9FF;

  /* Neutral */
  --bg: #F8FAFC;
  --card-bg: #FFFFFF;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --card-shadow-hover: 0 4px 12px rgba(0,0,0,0.08);
  --text-primary: #1E293B;
  --text-body: #475569;
  --text-muted: #94A3B8;
  --text-placeholder: #CBD5E1;
  --border: #E2E8F0;
  --border-light: #F1F5F9;

  /* Spacing */
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  --gap-xs: 4px;
  --gap-sm: 8px;
  --gap: 16px;
  --gap-lg: 24px;

  /* Typography */
  --font-xs: 11px;
  --font-sm: 12px;
  --font-base: 14px;
  --font-lg: 16px;
  --font-xl: 18px;
  --font-2xl: 24px;
  --font-bold: 600;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--bg); color: var(--text-body); font-size: var(--font-base); line-height: 1.6; -webkit-font-smoothing: antialiased; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 20px; border: none; border-radius: var(--radius);
  font-size: var(--font-base); font-weight: 500; cursor: pointer;
  transition: all 0.2s ease; white-space: nowrap; text-decoration: none;
  background: var(--primary); color: #fff;
}
.btn:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: 0 2px 8px var(--primary-ring); }
.btn:active { transform: translateY(0); box-shadow: none; }
.btn:disabled, .btn.loading { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-sm { padding: 6px 14px; font-size: var(--font-sm); border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 28px; font-size: var(--font-lg); }

.btn-success { background: var(--success); } .btn-success:hover { background: #059669; }
.btn-warning { background: var(--warning); color: #fff; } .btn-warning:hover { background: #D97706; }
.btn-danger { background: var(--danger); } .btn-danger:hover { background: var(--danger-hover); box-shadow: 0 2px 8px rgba(239,68,68,0.2); }
.btn-outline { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary-bg); transform: none; box-shadow: none; }
.btn-ghost { background: transparent; color: var(--primary); }
.btn-ghost:hover { background: var(--primary-bg); transform: none; box-shadow: none; }

/* ===== INPUTS ===== */
.input, .select, textarea.input {
  width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius);
  font-size: var(--font-base); color: var(--text-primary); background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s; outline: none; font-family: inherit;
}
.input:focus, .select:focus, textarea.input:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-ring);
}
.input.error { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(239,68,68,0.1); }
.input:disabled { background: var(--border-light); color: var(--text-muted); cursor: not-allowed; }
.input::placeholder { color: var(--text-placeholder); }

.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394A3B8' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

/* ===== CARDS ===== */
.card {
  background: var(--card-bg); border-radius: var(--radius-lg); padding: var(--gap);
  box-shadow: var(--card-shadow); border: 1px solid var(--border);
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: var(--card-shadow-hover); }
.card-clickable { cursor: pointer; }
.card-clickable:hover { transform: translateY(-2px); box-shadow: var(--card-shadow-hover); }

/* ===== STATUS TAGS ===== */
.status-tag {
  display: inline-flex; align-items: center; padding: 3px 10px; border-radius: var(--radius-full);
  font-size: var(--font-xs); font-weight: 500; white-space: nowrap; line-height: 1.4;
}
.tag-pending, .tag-PENDING { background: #F1F5F9; color: #64748B; }
.tag-dispatched, .tag-DISPATCHED { background: var(--primary-bg); color: var(--primary); }
.tag-accepted, .tag-ACCEPTED { background: #ECFEFF; color: #0891B2; }
.tag-inprogress, .tag-IN_PROGRESS { background: #FFF7ED; color: #EA580C; }
.tag-submitted, .tag-SUBMITTED { background: #F5F3FF; color: #7C3AED; }
.tag-approved, .tag-APPROVED { background: #F0FDF4; color: #16A34A; }
.tag-completed, .tag-COMPLETED { background: var(--success-bg); color: var(--success); }
.tag-cancelled, .tag-CANCELLED { background: #F1F5F9; color: #94A3B8; }
.tag-overdue, .tag-OVERDUE { background: var(--danger-bg); color: var(--danger); }

/* ===== PAGE STRUCTURE ===== */
.page { padding: var(--gap); max-width: 800px; margin: 0 auto; min-height: 100vh; }
.page-title { font-size: var(--font-xl); font-weight: var(--font-bold); color: var(--text-primary); margin-bottom: var(--gap); }
.back-btn {
  display: inline-flex; align-items: center; gap: 4px;
  background: none; border: none; color: var(--primary); font-size: var(--font-base); cursor: pointer;
  padding: 8px 0; margin-bottom: 8px;
}
.back-btn:hover { color: var(--primary-hover); }

/* ===== HEADER BAR ===== */
.header-bar {
  display: flex; align-items: center; gap: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: #fff; padding: 14px var(--gap); border-radius: var(--radius-lg);
  margin-bottom: var(--gap); font-size: var(--font-lg); flex-wrap: wrap;
}
.header-bar .role-tag { font-size: var(--font-sm); opacity: 0.8; background: rgba(255,255,255,0.15); padding: 2px 10px; border-radius: var(--radius-full); }
.header-bar .header-btn {
  background: rgba(255,255,255,0.15); color: #fff; border: 1px solid rgba(255,255,255,0.2);
  padding: 6px 14px; border-radius: var(--radius); cursor: pointer; font-size: var(--font-sm);
  transition: background 0.2s;
}
.header-bar .header-btn:hover { background: rgba(255,255,255,0.25); }
.header-bar .header-btn.dashboard-btn { background: rgba(255,255,255,0.25); font-weight: 600; }
.header-bar .header-right { margin-left: auto; display: flex; gap: 8px; }

/* ===== TABS ===== */
.tabs {
  display: flex; gap: var(--gap-xs); margin-bottom: var(--gap); background: var(--border-light);
  border-radius: var(--radius); padding: 4px; overflow-x: auto;
}
.tab-btn {
  flex: 1; padding: 8px 16px; border: none; border-radius: var(--radius-sm); background: transparent;
  color: var(--text-muted); font-size: var(--font-base); cursor: pointer; transition: all 0.2s; white-space: nowrap;
}
.tab-btn.active { background: #fff; color: var(--primary); font-weight: var(--font-bold); box-shadow: 0 1px 2px rgba(0,0,0,0.05); }

/* ===== STATS ROW ===== */
.stats-row { display: flex; gap: var(--gap-sm); margin-bottom: var(--gap); }
.stat-card {
  flex: 1; background: var(--card-bg); border-radius: var(--radius-lg); padding: 14px 10px;
  text-align: center; cursor: pointer; box-shadow: var(--card-shadow); transition: transform 0.2s;
}
.stat-card:hover { transform: translateY(-2px); }
.stat-card .stat-num { font-size: var(--font-2xl); font-weight: 700; display: block; color: var(--primary); }
.stat-card .stat-label { font-size: var(--font-sm); color: var(--text-muted); margin-top: 2px; }

/* ===== MENU GRID ===== */
.menu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-sm); margin-bottom: var(--gap); }
.menu-item {
  background: var(--card-bg); border-radius: var(--radius-lg); padding: 16px 10px;
  text-align: center; cursor: pointer; position: relative;
  box-shadow: var(--card-shadow); transition: all 0.2s;
}
.menu-item:hover { transform: translateY(-2px); box-shadow: var(--card-shadow-hover); }
.menu-item .menu-icon { font-size: 26px; display: block; margin-bottom: 4px; }
.menu-item .menu-label { font-size: var(--font-sm); color: var(--text-body); }
.menu-item .menu-badge {
  position: absolute; top: 6px; right: 6px; background: var(--danger);
  color: #fff; font-size: 10px; min-width: 18px; height: 18px; line-height: 18px;
  border-radius: 9px; text-align: center; padding: 0 4px;
}

/* ===== MODAL ===== */
.modal-mask {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.4); display: flex; align-items: center; justify-content: center; z-index: 1000;
  animation: fadeIn 0.2s ease;
}
.modal {
  background: #fff; border-radius: var(--radius-xl); padding: var(--gap-lg); width: 90%; max-width: 440px;
  max-height: 80vh; overflow-y: auto; box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  animation: slideUp 0.25s ease;
}
.modal h4 { font-size: var(--font-lg); font-weight: var(--font-bold); color: var(--text-primary); margin-bottom: var(--gap); }
.modal .modal-actions { display: flex; gap: var(--gap-sm); margin-top: var(--gap-lg); justify-content: flex-end; }

/* ===== TOAST ===== */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 2000;
  padding: 12px 20px; border-radius: var(--radius); font-size: var(--font-base);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12); animation: slideIn 0.3s ease;
  max-width: 360px;
}
.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--danger); color: #fff; }
.toast-warning { background: var(--warning); color: #fff; }
.toast-info { background: var(--primary); color: #fff; }

/* ===== EMPTY STATE ===== */
.empty-state { text-align: center; padding: 48px var(--gap); color: var(--text-muted); }
.empty-state .empty-icon { font-size: 40px; margin-bottom: 12px; }

/* ===== LOADING SPINNER ===== */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--primary);
  border-radius: 50%; animation: spin 0.6s linear infinite; display: inline-block;
}
.spinner-sm { width: 14px; height: 14px; border-width: 2px; }
.spinner-white { border-color: rgba(255,255,255,0.3); border-top-color: #fff; }

/* ===== SECTION ===== */
.section { margin-bottom: var(--gap); }
.section-title { font-size: 15px; font-weight: var(--font-bold); color: var(--text-primary); margin-bottom: var(--gap-sm); }
.form-group { margin-bottom: var(--gap-sm); }
.form-label { font-size: var(--font-sm); color: var(--text-muted); margin-bottom: 4px; display: block; font-weight: 500; }
.form-hint { font-size: var(--font-sm); color: var(--text-muted); margin-top: 4px; }
.form-row { display: flex; gap: var(--gap-sm); }
.form-row > * { flex: 1; }
.required-mark { color: var(--danger); }

/* ===== OVERVIEW CARDS (role pages) ===== */
.overview-row { display: flex; gap: var(--gap-sm); margin-bottom: var(--gap); }
.overview-card {
  flex: 1; background: var(--card-bg); border-radius: var(--radius-lg); padding: 16px;
  text-align: center; box-shadow: var(--card-shadow);
}
.overview-card .ov-num { font-size: 28px; font-weight: 700; display: block; color: var(--primary); }
.overview-card .ov-label { font-size: var(--font-sm); color: var(--text-muted); margin-top: 4px; }

/* ===== ANIMATIONS ===== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .page { padding: var(--gap-sm); }
  .menu-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { flex-wrap: wrap; }
  .stat-card { min-width: calc(50% - 4px); }
}