/* ==========================================================================
   类案智检 · 设计系统
   深蓝 / 灰白 / 低饱和金 —— 专业法律工作台风格
   ========================================================================== */

:root {
  /* 主色：深蓝 */
  --navy-900: #0e2238;
  --navy-800: #14304d;
  --navy-700: #1a3a5c;
  --navy-600: #21476e;
  --navy-100: #e6edf4;
  --navy-50:  #f0f5fa;

  /* 点缀：低饱和金 */
  --gold-600: #a68a4a;
  --gold-500: #b8a06a;
  --gold-100: #f4efe2;
  --gold-50:  #faf7ef;

  /* 中性灰白 */
  --bg:        #f4f6f8;
  --surface:   #ffffff;
  --surface-2: #f8fafc;
  --border:    #e3e8ee;
  --border-2:  #d5dce4;

  /* 文字 */
  --text:      #1f2933;
  --text-2:    #52606d;
  --text-3:    #7b8794;
  --text-inv:  #ffffff;

  /* 语义色 */
  --success:   #2f855a;
  --success-bg:#e9f6ef;
  --warning:   #b7791f;
  --warning-bg:#fdf3e2;
  --danger:    #c53030;
  --danger-bg: #fbeaea;
  --info:      #2b6cb0;
  --info-bg:   #e8f1fa;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .05), 0 1px 3px rgba(16, 24, 40, .06);
  --shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 4px 12px rgba(16, 24, 40, .06);
  --shadow-lg: 0 8px 30px rgba(16, 24, 40, .12);

  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--navy-600); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 布局 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 900px; }
.container.wide { max-width: 1280px; }

/* ---------- 顶部导航 ---------- */
.navbar {
  background: var(--navy-900);
  color: var(--text-inv);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
}
.navbar-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  height: 60px;
  display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 600; font-size: 17px; letter-spacing: .5px; }
.brand:hover { text-decoration: none; }
.brand .logo-mark {
  width: 30px; height: 30px; border-radius: 7px;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 15px;
}
.brand .sub { font-size: 12px; color: rgba(255,255,255,.55); font-weight: 400; margin-left: 2px; }
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 8px; flex: 1; }
.nav-links a {
  color: rgba(255,255,255,.78); padding: 8px 13px; border-radius: 7px; font-size: 14px;
  transition: background .15s, color .15s;
}
.nav-links a:hover { background: rgba(255,255,255,.08); color: #fff; text-decoration: none; }
.nav-links a.active { background: rgba(255,255,255,.12); color: #fff; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-user { color: rgba(255,255,255,.85); font-size: 14px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; cursor: pointer; border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
  line-height: 1.4; white-space: nowrap; text-decoration: none; font-family: var(--font);
}
.btn:hover { text-decoration: none; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--navy-700); color: #fff; }
.btn-primary:hover { background: var(--navy-600); }
.btn-gold { background: var(--gold-500); color: #fff; }
.btn-gold:hover { background: var(--gold-600); }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border-2); }
.btn-secondary:hover { background: var(--surface-2); }
.btn-ghost { background: transparent; color: var(--navy-700); }
.btn-ghost:hover { background: var(--navy-50); }
.btn-danger { background: #fff; color: var(--danger); border-color: #f0c9c9; }
.btn-danger:hover { background: var(--danger-bg); }
.btn-sm { padding: 5px 11px; font-size: 13px; }
.btn-lg { padding: 12px 26px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-on-dark { background: rgba(255,255,255,.12); color: #fff; }
.btn-on-dark:hover { background: rgba(255,255,255,.2); }

/* ---------- 卡片 ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-sm);
  padding: 24px; margin-bottom: 20px;
}
.card.pad-lg { padding: 32px; }
.card-title { font-size: 17px; font-weight: 600; margin: 0 0 6px; color: var(--text); }
.card-sub { color: var(--text-3); font-size: 13px; margin: 0 0 18px; }

/* ---------- 页头 ---------- */
.page-hero {
  background: var(--navy-800);
  color: #fff;
  padding: 44px 0 48px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.page-hero h1 { margin: 0 0 8px; font-size: 26px; font-weight: 600; }
.page-hero p { margin: 0; color: rgba(255,255,255,.72); font-size: 15px; max-width: 720px; }
.page-hero .gold { color: var(--gold-500); }

/* ---------- 表单 ---------- */
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--text); }
.field .hint { font-size: 12.5px; color: var(--text-3); margin-top: 5px; }
.field .req::after { content: " *"; color: var(--danger); }
.input, .textarea, .select {
  width: 100%; padding: 10px 13px; border: 1px solid var(--border-2);
  border-radius: var(--radius-sm); font-size: 14px; font-family: var(--font);
  color: var(--text); background: #fff; transition: border-color .15s, box-shadow .15s;
}
.input:focus, .textarea:focus, .select:focus {
  outline: none; border-color: var(--navy-600);
  box-shadow: 0 0 0 3px rgba(26, 58, 92, .1);
}
.textarea { min-height: 140px; resize: vertical; line-height: 1.7; }
.select { appearance: auto; }

/* 立场选择 */
.stance-group { display: flex; gap: 12px; }
.stance-option {
  flex: 1; border: 1.5px solid var(--border-2); border-radius: var(--radius);
  padding: 16px; cursor: pointer; transition: all .15s; background: #fff;
}
.stance-option:hover { border-color: var(--navy-600); }
.stance-option.selected { border-color: var(--navy-700); background: var(--navy-50); box-shadow: var(--shadow-sm); }
.stance-option .s-title { font-weight: 600; font-size: 15px; }
.stance-option .s-desc { font-size: 12.5px; color: var(--text-3); margin-top: 3px; }
.stance-option input { display: none; }

/* 文件拖放区 */
.dropzone {
  border: 2px dashed var(--border-2); border-radius: var(--radius);
  padding: 34px 20px; text-align: center; cursor: pointer;
  transition: all .15s; background: var(--surface-2); color: var(--text-2);
}
.dropzone:hover, .dropzone.dragover { border-color: var(--navy-600); background: var(--navy-50); }
.dropzone .dz-icon { font-size: 30px; margin-bottom: 8px; }
.dropzone .dz-main { font-size: 15px; font-weight: 500; color: var(--text); }
.dropzone .dz-sub { font-size: 12.5px; color: var(--text-3); margin-top: 4px; }
.dropzone.has-file { border-style: solid; border-color: var(--success); background: var(--success-bg); }

/* 复选框 */
.checkbox { display: flex; align-items: flex-start; gap: 9px; cursor: pointer; font-size: 14px; }
.checkbox input { margin-top: 3px; }
.checkbox .cb-text { color: var(--text-2); }

/* ---------- 徽章 ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 500;
}
.badge-pending { background: var(--warning-bg); color: var(--warning); }
.badge-published { background: var(--success-bg); color: var(--success); }
.badge-removed { background: #eef0f3; color: var(--text-3); }
.badge-demo { background: var(--gold-100); color: var(--gold-600); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th, .tbl td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.tbl th { background: var(--surface-2); color: var(--text-2); font-weight: 600; font-size: 13px; white-space: nowrap; }
.tbl tr:last-child td { border-bottom: none; }
.tbl tbody tr:hover { background: var(--navy-50); }

/* ---------- 标签页 ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab {
  padding: 10px 18px; font-size: 14px; font-weight: 500; color: var(--text-2);
  cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px;
  white-space: nowrap;
}
.tab:hover { color: var(--navy-700); }
.tab.active { color: var(--navy-700); border-bottom-color: var(--navy-700); font-weight: 600; }
.tab .count { font-size: 12px; color: var(--text-3); margin-left: 4px; }

/* ---------- 步骤条 ---------- */
.steps { display: flex; align-items: center; margin: 8px 0 28px; flex-wrap: wrap; }
.step { display: flex; align-items: center; gap: 8px; color: var(--text-3); font-size: 13.5px; }
.step .num {
  width: 26px; height: 26px; border-radius: 50%; background: var(--border);
  color: var(--text-2); display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600;
}
.step.active { color: var(--navy-700); font-weight: 500; }
.step.active .num { background: var(--navy-700); color: #fff; }
.step.done { color: var(--success); }
.step.done .num { background: var(--success); color: #fff; }
.step-arrow { margin: 0 12px; color: var(--border-2); }

/* ---------- 提示框 ---------- */
.alert { padding: 13px 16px; border-radius: var(--radius-sm); font-size: 14px; margin-bottom: 16px; display: flex; gap: 9px; align-items: flex-start; }
.alert-info { background: var(--info-bg); color: #1a4a7a; }
.alert-warning { background: var(--warning-bg); color: #8a5a12; }
.alert-danger { background: var(--danger-bg); color: #8a2b2b; }
.alert-success { background: var(--success-bg); color: #1f5c3c; }
.disclaimer-box {
  background: var(--gold-50); border: 1px solid var(--gold-100);
  border-left: 3px solid var(--gold-500); border-radius: var(--radius-sm);
  padding: 13px 16px; font-size: 13.5px; color: #6d5626;
}

/* ---------- 7 要素编辑 ---------- */
.elements-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
.element-field { padding: 14px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.element-field .e-label { font-weight: 600; font-size: 13px; color: var(--navy-700); margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.element-field .e-label .e-no { width: 20px; height: 20px; border-radius: 50%; background: var(--navy-100); color: var(--navy-700); font-size: 12px; display: inline-flex; align-items: center; justify-content: center; }
.element-field textarea, .element-field input { border: 1px solid var(--border-2); border-radius: var(--radius-sm); width: 100%; padding: 8px 10px; font-size: 14px; font-family: var(--font); }
.element-field textarea { min-height: 56px; resize: vertical; }

/* ---------- 相似案例结果卡 ---------- */
.result-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; background: #fff; box-shadow: var(--shadow-sm); }
.result-card:hover { box-shadow: var(--shadow); }
.result-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.result-score { text-align: center; flex-shrink: 0; }
.result-score .pct { font-size: 28px; font-weight: 700; color: var(--navy-700); line-height: 1; }
.result-score .pct-label { font-size: 11px; color: var(--text-3); }
.result-title { font-size: 16px; font-weight: 600; }
.result-meta { color: var(--text-3); font-size: 13px; margin-top: 3px; }
.result-meta span + span::before { content: " · "; color: var(--border-2); }
.result-explanation { margin-top: 12px; font-size: 13px; color: var(--text-2); background: var(--surface-2); padding: 10px 13px; border-radius: var(--radius-sm); }
.hit-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.hit-tag { font-size: 12px; padding: 2px 8px; border-radius: 999px; }
.hit-tag.hit { background: var(--success-bg); color: var(--success); }
.hit-tag.miss { background: #eef0f3; color: var(--text-3); }

/* ---------- 相似度条 ---------- */
.score-bar { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; margin-top: 8px; }
.score-bar .fill { height: 100%; background: var(--navy-600); border-radius: 3px; }

/* ---------- 空状态 ---------- */
.empty { text-align: center; padding: 56px 24px; color: var(--text-3); }
.empty .empty-icon { font-size: 40px; margin-bottom: 12px; opacity: .5; }
.empty .empty-title { font-size: 16px; font-weight: 600; color: var(--text-2); margin-bottom: 6px; }

/* ---------- 法律意见 ---------- */
.opinion-head { text-align: center; padding: 8px 0 20px; border-bottom: 2px solid var(--navy-700); margin-bottom: 24px; }
.opinion-head h2 { margin: 0 0 6px; font-size: 24px; letter-spacing: 2px; color: var(--navy-800); }
.opinion-head .meta { color: var(--text-3); font-size: 13px; }
.opinion-section { margin-bottom: 22px; }
.opinion-section h3 { font-size: 16px; font-weight: 600; color: var(--navy-800); margin: 0 0 10px; padding-left: 10px; border-left: 3px solid var(--gold-500); }
.opinion-section p { margin: 0 0 8px; }
.opinion-section ul { margin: 6px 0; padding-left: 20px; }
.opinion-section li { margin-bottom: 6px; }

/* ---------- 统计卡 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.stat-card .s-num { font-size: 28px; font-weight: 700; color: var(--navy-700); }
.stat-card .s-label { font-size: 13px; color: var(--text-3); margin-top: 2px; }

/* ---------- 模态框 ---------- */
.modal-mask { position: fixed; inset: 0; background: rgba(14,34,56,.5); z-index: 200; display: none; align-items: flex-start; justify-content: center; padding: 40px 16px; overflow-y: auto; }
.modal-mask.open { display: flex; }
.modal { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 100%; max-width: 680px; padding: 28px; }
.modal h3 { margin: 0 0 18px; font-size: 18px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ---------- Toast ---------- */
.toast-wrap { position: fixed; top: 72px; right: 20px; z-index: 300; display: flex; flex-direction: column; gap: 10px; }
.toast { background: var(--text); color: #fff; padding: 11px 16px; border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); font-size: 14px; max-width: 360px; animation: toast-in .2s ease; }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--warning); }
@keyframes toast-in { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

/* ---------- 加载 ---------- */
.spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; }
.spinner.dark { border-color: rgba(0,0,0,.15); border-top-color: var(--navy-700); }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-block { text-align: center; padding: 48px 20px; color: var(--text-3); }
.loading-block .spinner { margin: 0 auto 14px; display: block; }

/* ---------- 页脚 ---------- */
.footer { margin-top: 48px; background: var(--navy-900); color: rgba(255,255,255,.6); padding: 32px 0; font-size: 13px; }
.footer-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; }
.footer a { color: rgba(255,255,255,.75); }

/* ---------- 工具类 ---------- */
.mt-0 { margin-top: 0; } .mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; } .mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; }
.flex { display: flex; } .flex-wrap { flex-wrap: wrap; } .items-center { align-items: center; } .justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; }
.text-sm { font-size: 13px; } .text-xs { font-size: 12px; } .text-muted { color: var(--text-3); }
.text-center { text-align: center; }
.mono { font-family: var(--mono); }
.divider { border-top: 1px solid var(--border); margin: 20px 0; }
.hidden { display: none !important; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 登录页 ---------- */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; background: var(--navy-900); }
.auth-card { background: #fff; border-radius: 14px; box-shadow: var(--shadow-lg); width: 100%; max-width: 420px; padding: 36px; }
.auth-brand { text-align: center; margin-bottom: 24px; }
.auth-brand .logo-mark { width: 46px; height: 46px; border-radius: 11px; background: linear-gradient(135deg, var(--gold-500), var(--gold-600)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 700; margin: 0 auto 12px; }
.auth-brand h1 { margin: 0; font-size: 20px; color: var(--navy-800); }
.auth-brand p { margin: 4px 0 0; color: var(--text-3); font-size: 13px; }

/* ---------- 响应式 ---------- */
@media (max-width: 760px) {
  .container { padding: 0 16px; }
  .elements-grid { grid-template-columns: 1fr; }
  .navbar-inner { gap: 10px; padding: 0 14px; }
  .nav-links a { padding: 8px 9px; font-size: 13px; }
  .brand .sub { display: none; }
  .result-head { flex-direction: column; }
  .result-score { display: flex; align-items: baseline; gap: 6px; }
  .page-hero { padding: 30px 0 34px; }
  .page-hero h1 { font-size: 22px; }
  .stance-group { flex-direction: column; }
  .card.pad-lg { padding: 20px; }
}