:root {
  --deep-blue: #1B2838;
  --orange: #F97316;
  --warm-gray: #E8E4DF;
  --green: #22C55E;
  --red: #DC2626;
  --yellow: #EAB308;
  --dark-bg: #0F1923;
  --card-bg: #1E3044;
  --text-primary: #F0EDE8;
  --text-secondary: #9CA3AF;
  --border-color: #2D4A5E;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'IBM Plex Sans', sans-serif; background: var(--dark-bg); color: var(--text-primary); min-height: 100vh; }
h1,h2,h3,h4,h5,h6 { font-family: 'Space Grotesk', sans-serif; }

/* ===== 登录页 ===== */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.login-bg { position: absolute; inset: 0; background: linear-gradient(135deg, #0F1923 0%, #1B2838 40%, #1a3050 70%, #0F1923 100%); }
.login-bg::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle at 30% 40%, rgba(249,115,22,0.08) 0%, transparent 50%), radial-gradient(circle at 70% 60%, rgba(59,130,246,0.05) 0%, transparent 40%); animation: loginPulse 8s ease-in-out infinite alternate; }
@keyframes loginPulse { 0% { transform: scale(1); } 100% { transform: scale(1.05); } }
.login-card { position: relative; z-index: 1; background: rgba(30,48,68,0.85); backdrop-filter: blur(20px); border: 1px solid var(--border-color); border-radius: 16px; padding: 48px 40px; width: 100%; max-width: 400px; text-align: center; box-shadow: 0 25px 60px rgba(0,0,0,0.4); }
.login-logo { width: 72px; height: 72px; background: var(--orange); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 32px; color: #fff; margin: 0 auto 20px; box-shadow: 0 8px 24px rgba(249,115,22,0.3); }
.login-title { font-size: 22px; font-weight: 700; margin-bottom: 6px; letter-spacing: 1px; }
.login-subtitle { font-size: 12px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 32px; }
.login-field { position: relative; margin-bottom: 16px; }
.login-field i { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--text-secondary); font-size: 14px; }
.login-field input { width: 100%; padding: 14px 16px 14px 44px; background: rgba(15,25,35,0.6); border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-primary); font-family: 'IBM Plex Sans', sans-serif; font-size: 15px; transition: border-color 0.2s; }
.login-field input:focus { outline: none; border-color: var(--orange); }
.login-error { color: var(--red); font-size: 13px; margin-bottom: 12px; padding: 8px 12px; background: rgba(220,38,38,0.1); border-radius: 6px; }
.login-btn { width: 100%; padding: 14px; background: var(--orange); color: #fff; border: none; border-radius: 8px; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 16px; cursor: pointer; transition: all 0.2s; margin-top: 8px; }
.login-btn:hover { background: #EA580C; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(249,115,22,0.3); }

/* ===== Header ===== */
.header { background: var(--deep-blue); border-bottom: 3px solid var(--orange); padding: 14px 28px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 100; }
.header-left { display: flex; align-items: center; gap: 14px; }
.header-logo { width: 40px; height: 40px; background: var(--orange); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px; color: #fff; }
.header-title { font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.header-subtitle { font-size: 11px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 2px; }
.header-actions { display: flex; gap: 10px; align-items: center; }
.header-user { color: var(--text-secondary); font-size: 13px; display: flex; align-items: center; gap: 6px; margin-right: 8px; }
.btn { padding: 8px 16px; border: none; border-radius: 6px; font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 13px; cursor: pointer; display: inline-flex; align-items: center; gap: 7px; transition: all 0.2s; }
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: #EA580C; transform: translateY(-1px); }
.btn-secondary { background: var(--card-bg); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { border-color: var(--orange); }
.btn-outline { background: transparent; color: var(--text-secondary); border: 1px solid var(--border-color); }
.btn-outline:hover { border-color: var(--red); color: var(--red); }
.btn-success { background: var(--green); color: #fff; }
.btn-success:hover { background: #16A34A; }
.btn-complete { background: rgba(34,197,94,0.12); color: var(--green); border: 1px solid rgba(34,197,94,0.3); }
.btn-complete:hover { background: var(--green); color: #fff; }

/* ===== Layout ===== */
.layout { display: grid; grid-template-columns: 380px 1fr; min-height: calc(100vh - 68px); }
.panel-left { background: var(--deep-blue); border-right: 1px solid var(--border-color); padding: 22px; overflow-y: auto; max-height: calc(100vh - 68px); }
.panel-title { font-size: 15px; font-weight: 600; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; color: var(--orange); }
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 11px; font-weight: 500; color: var(--text-secondary); margin-bottom: 5px; text-transform: uppercase; letter-spacing: 1px; }
.form-input, .form-select, .form-textarea { width: 100%; padding: 9px 12px; background: var(--dark-bg); border: 1px solid var(--border-color); border-radius: 6px; color: var(--text-primary); font-family: 'IBM Plex Sans', sans-serif; font-size: 13px; transition: border-color 0.2s; }
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--orange); }
.form-textarea { min-height: 70px; resize: vertical; }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239CA3AF' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.submit-btn { width: 100%; padding: 11px; background: var(--orange); color: #fff; border: none; border-radius: 8px; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 14px; cursor: pointer; transition: all 0.2s; margin-top: 6px; }
.submit-btn:hover { background: #EA580C; }

/* ===== Stats ===== */
.stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 18px; padding-bottom: 18px; border-bottom: 1px solid var(--border-color); }
.stat-card { background: var(--card-bg); border-radius: 8px; padding: 10px; text-align: center; }
.stat-number { font-family: 'Space Grotesk', sans-serif; font-size: 26px; font-weight: 700; }
.stat-label { font-size: 10px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; margin-top: 3px; }

/* ===== Right Panel ===== */
.panel-right { padding: 22px; overflow-y: auto; max-height: calc(100vh - 68px); }
.toolbar { display: flex; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; align-items: center; }
.search-box { flex: 1; min-width: 200px; position: relative; }
.search-box input { width: 100%; padding: 9px 12px 9px 38px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 6px; color: var(--text-primary); font-family: 'IBM Plex Sans', sans-serif; font-size: 13px; }
.search-box input:focus { outline: none; border-color: var(--orange); }
.search-box i { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-secondary); font-size: 13px; }
.filter-group { display: flex; gap: 6px; }
.filter-btn { padding: 7px 12px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 6px; color: var(--text-secondary); font-family: 'Space Grotesk', sans-serif; font-size: 11px; font-weight: 500; cursor: pointer; transition: all 0.2s; }
.filter-btn.active { background: var(--orange); color: #fff; border-color: var(--orange); }
.filter-btn:hover:not(.active) { border-color: var(--orange); color: var(--text-primary); }

/* ===== Order Cards ===== */
.orders-list { display: flex; flex-direction: column; gap: 10px; }
.order-card { background: var(--card-bg); border-radius: 10px; padding: 16px; border-left: 4px solid var(--border-color); transition: all 0.2s; position: relative; }
.order-card:hover { transform: translateX(4px); }
.order-card.priority-urgent { border-left-color: var(--red); }
.order-card.priority-high { border-left-color: var(--orange); }
.order-card.priority-medium { border-left-color: var(--yellow); }
.order-card.priority-low { border-left-color: var(--green); }
.order-card.status-completed { opacity: 0.7; }
.order-card.status-completed:hover { opacity: 1; }
.order-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; }
.order-id { font-family: 'Space Grotesk', monospace; font-size: 11px; color: var(--orange); font-weight: 600; }
.order-title { font-size: 14px; font-weight: 600; margin: 3px 0 6px; }
.order-desc { font-size: 12px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 10px; }
.order-meta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.meta-tag { display: inline-flex; align-items: center; gap: 4px; font-size: 10px; padding: 3px 8px; border-radius: 20px; background: rgba(255,255,255,0.06); color: var(--text-secondary); }
.meta-tag i { font-size: 9px; }
.status-badge { padding: 3px 10px; border-radius: 20px; font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.status-pending { background: rgba(234,179,8,0.15); color: var(--yellow); }
.status-in-progress { background: rgba(59,130,246,0.15); color: #3B82F6; }
.status-completed { background: rgba(34,197,94,0.15); color: var(--green); }
.status-closed { background: rgba(156,163,175,0.15); color: var(--text-secondary); }
.priority-badge { padding: 3px 8px; border-radius: 20px; font-size: 10px; font-weight: 600; }
.priority-urgent { background: rgba(220,38,38,0.15); color: var(--red); }
.priority-high { background: rgba(249,115,22,0.15); color: var(--orange); }
.priority-medium { background: rgba(234,179,8,0.15); color: var(--yellow); }
.priority-low { background: rgba(34,197,94,0.15); color: var(--green); }
.category-badge { padding: 3px 8px; border-radius: 20px; font-size: 10px; font-weight: 600; background: rgba(249,115,22,0.1); color: var(--orange); }
.order-actions { display: flex; gap: 5px; }
.action-btn { background: none; border: 1px solid var(--border-color); color: var(--text-secondary); padding: 4px 12px; border-radius: 6px; cursor: pointer; font-family: 'Space Grotesk', sans-serif; font-size: 11px; font-weight: 500; transition: all 0.2s; white-space: nowrap; }
.action-btn:hover { border-color: var(--orange); color: var(--orange); }
.action-accept { border-color: rgba(249,115,22,0.4); color: var(--orange); }
.action-accept:hover { background: var(--orange); color: #fff; }
.action-edit:hover { border-color: #3B82F6; color: #3B82F6; }
.action-delete { border-color: rgba(220,38,38,0.4); color: var(--red); }
.action-delete:hover { background: var(--red); color: #fff; }

/* ===== Radio Group ===== */
.radio-group { display: flex; gap: 16px; }
.radio-label { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 13px; }
.radio-label input[type='radio'] { accent-color: var(--orange); width: 16px; height: 16px; }
.radio-text { color: var(--text-primary); }

/* ===== Empty State ===== */
.empty-state { text-align: center; padding: 50px 20px; color: var(--text-secondary); }
.empty-state i { font-size: 42px; margin-bottom: 14px; opacity: 0.3; }
.empty-state p { font-size: 13px; }

/* ===== Modal ===== */
.modal-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.7); z-index: 200; align-items: center; justify-content: center; }
.modal-overlay.active { display: flex; }
.modal { background: var(--deep-blue); border-radius: 12px; width: 90%; max-width: 500px; max-height: 80vh; overflow-y: auto; border: 1px solid var(--border-color); }
.modal-header { padding: 18px 22px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.modal-header h3 { font-size: 15px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-secondary); font-size: 20px; cursor: pointer; }
.modal-body { padding: 22px; }
.modal-footer { padding: 14px 22px; border-top: 1px solid var(--border-color); display: flex; gap: 10px; justify-content: flex-end; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--orange); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .panel-left { max-height: none; border-right: none; border-bottom: 1px solid var(--border-color); padding: 16px; }
  .panel-right { max-height: none; padding: 16px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat-number { font-size: 22px; }
  .header { flex-wrap: wrap; gap: 8px; padding: 12px 16px; }
  .header-title { font-size: 17px; }
  .header-subtitle { font-size: 10px; }
  .header-actions { width: 100%; justify-content: flex-end; }
  .header-actions .btn { padding: 6px 10px; font-size: 12px; }
  .header-user { font-size: 12px; margin-right: 4px; }
  .toolbar { flex-direction: column; gap: 8px; }
  .search-box { width: 100%; min-width: auto; }
  .filter-group { width: 100%; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
  .filter-btn { white-space: nowrap; flex-shrink: 0; }
  .order-card { padding: 14px; }
  .order-header { flex-direction: column; gap: 8px; }
  .order-actions { align-self: flex-end; }
  .order-meta { gap: 6px; }
  .meta-tag { font-size: 9px; padding: 2px 6px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
}

@media (max-width: 480px) {
  .login-card { margin: 16px; padding: 32px 24px; }
  .login-title { font-size: 18px; }
  .login-logo { width: 56px; height: 56px; font-size: 24px; }
  .header-left { gap: 10px; }
  .header-logo { width: 34px; height: 34px; font-size: 15px; }
  .header-title { font-size: 15px; }
  .btn-secondary .fa-file-csv,
  .btn-secondary .fa-file-excel { display: none; }
  .stat-card { padding: 8px 4px; }
  .stat-number { font-size: 20px; }
  .stat-label { font-size: 9px; }
  .panel-left { padding: 12px; }
  .panel-right { padding: 12px; }
  .order-card { padding: 12px; border-radius: 8px; }
  .order-title { font-size: 13px; }
  .order-desc { font-size: 11px; }
  .empty-state { padding: 30px 16px; }
  .empty-state i { font-size: 32px; }
  .modal { width: 95%; margin: 10px; }
  .modal-body { padding: 16px; }
  .modal-header { padding: 14px 16px; }
  .modal-footer { padding: 12px 16px; }
}