/* ==================== CSS Reset & Base ==================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #10b981;
  --warning: #f59e0b;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
}

/* ==================== Login Page ==================== */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 20px;
}

.login-container {
  background: #fff;
  border-radius: 16px;
  padding: 32px 28px;
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow-lg);
}

.login-header { text-align: center; margin-bottom: 18px; }
.login-icon { color: var(--primary); margin-bottom: 10px; }
.login-header h1 { font-size: 20px; color: var(--gray-900); margin-bottom: 6px; }
.login-subtitle { color: var(--gray-500); font-size: 13px; }

.login-form .form-group { margin-bottom: 14px; }

.input-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 0 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fff;
  box-sizing: border-box;
}

.input-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.input-wrapper svg {
  color: var(--gray-400);
  flex-shrink: 0;
}

.input-wrapper input {
  flex: 1;
  min-width: 0;
  border: 0 none !important;
  outline: none !important;
  padding: 10px 0;
  font-size: 15px;
  line-height: 1.4;
  background: transparent !important;
  box-sizing: border-box;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  box-shadow: none !important;
  background-clip: padding-box;
}

.error-msg {
  background: #fef2f2;
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 16px;
  border: 1px solid #fecaca;
}

/* ==================== Buttons ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  gap: 6px;
}

.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-secondary { background: var(--gray-200); color: var(--gray-700); }
.btn-secondary:hover { background: var(--gray-300); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: var(--danger-hover); }
.btn-block { width: 100%; padding: 11px; font-size: 15px; }

.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-outline { background: transparent; border: 1px solid rgba(255,255,255,0.3); color: rgba(255,255,255,0.9); }
.btn-outline:hover { background: rgba(255,255,255,0.1); }
.btn-danger-outline { background: transparent; border: 1px solid rgba(239,68,68,0.3); color: #fca5a5; }
.btn-danger-outline:hover { background: rgba(239,68,68,0.1); }
.btn-text { background: none; color: var(--gray-500); padding: 4px 8px; }
.btn-text:hover { color: var(--primary); }

.btn-icon {
  padding: 6px 10px;
  font-size: 13px;
}

.btn-edit { background: var(--primary-light); color: var(--primary); }
.btn-edit:hover { background: #ddd6fe; }
.btn-delete { background: #fef2f2; color: var(--danger); }
.btn-delete:hover { background: #fecaca; }

/* ==================== Navbar ==================== */
.navbar {
  background: #2c3e50;
  color: #fff;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 32px;
  margin-right: auto;
  height: 100%;
}
.nav-menu a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 15px;
  padding: 0 18px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 7px;
  border-bottom: 3px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}
.nav-menu a svg { flex-shrink: 0; }
.nav-menu a:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav-menu a.active { color: #fff; font-weight: 600; border-bottom-color: #3498db; }

.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-user { font-size: 14px; opacity: 0.9; }

.item-link { color: var(--primary); text-decoration: none; font-weight: 600; }
.item-link:hover { text-decoration: underline; }

/* ==================== Main Content ==================== */
.main-content { max-width: 1280px; margin: 0 auto; padding: 24px; }

/* ==================== Stats Row ==================== */
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 24px; }

.stat-card {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon-blue { background: #eef2ff; color: var(--primary); }
.stat-icon-green { background: #ecfdf5; color: var(--success); }
.stat-icon-purple { background: #f5f3ff; color: #8b5cf6; }
.stat-currency { font-size: 26px; font-weight: 700; line-height: 1; }

.stat-value { font-size: 24px; font-weight: 700; color: var(--gray-900); }
.stat-label { font-size: 13px; color: var(--gray-500); margin-top: 2px; }

/* ==================== Cards ==================== */
.card {
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
  overflow: hidden;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.card-header h2 { font-size: 17px; color: var(--gray-800); }

/* ==================== Form ==================== */
.form-grid {
  padding: 24px;
  display: grid;
  /* 列宽：单位 / 耗材名称(双倍) / 日期 / 数量(减半) / 单价(加宽一半) / 合计(自适应内容宽) */
  grid-template-columns: 3fr 6fr 2.5fr 1.5fr 2.25fr auto;
  gap: 14px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  font-size: 14px;
  color: var(--gray-700);
}

.required { color: var(--danger); }

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fff;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.computed-total {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  padding: 9px 0;
  line-height: 1.4;
}

.form-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 12px;
  padding-top: 8px;
}

.form-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ==================== Search Box ==================== */
.search-box {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 0 10px;
  background: var(--gray-50);
  transition: border-color 0.2s;
}

.search-box:focus-within { border-color: var(--primary); background: #fff; }

.search-box input {
  border: none;
  outline: none;
  padding: 8px;
  font-size: 14px;
  width: 220px;
  background: transparent;
}

.search-box svg { color: var(--gray-400); }

/* ==================== Table ==================== */
.table-wrapper { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table thead { background: var(--gray-50); }

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--gray-600);
  font-size: 13px;
  white-space: nowrap;
  border-bottom: 1px solid var(--gray-200);
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
}

.data-table tbody tr:hover { background: var(--gray-50); }

.data-table .empty-state {
  text-align: center;
  padding: 48px;
  color: var(--gray-400);
  font-size: 15px;
}

.action-btns { display: flex; gap: 6px; }

/* ==================== Pagination ==================== */
.pagination {
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-wrap: wrap;
}

.pagination button {
  padding: 6px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  background: #fff;
  color: var(--gray-600);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.pagination button:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }
.pagination .page-info { font-size: 13px; color: var(--gray-500); margin: 0 8px; }

/* ==================== Modal ==================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal {
  background: #fff;
  border-radius: 12px;
  width: 100%;
  max-width: 440px;
  padding: 24px;
  box-shadow: var(--shadow-lg);
}

.modal-sm { max-width: 380px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-header h3 { font-size: 18px; color: var(--gray-900); }

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--gray-400);
  cursor: pointer;
  padding: 0 4px;
}

.modal-close:hover { color: var(--gray-600); }
.modal-body-text { color: var(--gray-600); margin-bottom: 20px; font-size: 15px; }

.modal .form-group { margin-bottom: 16px; }

.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ==================== Toast ==================== */
.toast {
  position: fixed;
  top: 80px;
  right: 24px;
  padding: 12px 24px;
  border-radius: var(--radius);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  z-index: 2000;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease;
  max-width: 400px;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--primary); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ==================== Responsive ==================== */
@media (max-width: 1100px) {
  .form-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .navbar { padding: 0 16px; }
  .nav-brand span { display: none; }
  .main-content { padding: 16px; }
  .stats-row { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; padding: 16px; }
  .card-header { padding: 16px; }
  .search-box input { width: 150px; }
  .login-container { padding: 28px 20px; }
}