/* ===== 问卷平台 统一样式 ===== */
:root {
  --c-primary: #2b5d3a;        /* WSI 绿 */
  --c-primary-hover: #1f4529;
  --c-bg: #f7f8fa;
  --c-card: #ffffff;
  --c-text: #1f2937;
  --c-text-soft: #6b7280;
  --c-border: #e5e7eb;
  --c-error: #dc2626;
  --c-success: #16a34a;
  --c-warn: #d97706;
  --r-card: 12px;
  --r-btn: 8px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== 通用布局 ===== */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 80px;
}
.container--wide { max-width: 960px; }
.card {
  background: var(--c-card);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  margin-bottom: 16px;
}
.header {
  text-align: center;
  padding: 28px 16px 16px;
}
.header img { height: 56px; width: auto; }
.header h1 { font-size: 18px; margin: 12px 0 0; color: var(--c-text); font-weight: 600; }

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  padding: 12px 20px;
  font-size: 16px;
  font-weight: 500;
  border: none;
  border-radius: var(--r-btn);
  cursor: pointer;
  background: var(--c-primary);
  color: #fff;
  transition: background 0.15s;
}
.btn:hover { background: var(--c-primary-hover); }
.btn:disabled { background: #aaa; cursor: not-allowed; }
.btn--ghost { background: transparent; color: var(--c-primary); border: 1px solid var(--c-primary); }
.btn--block { display: block; width: 100%; }

/* ===== 列表页问卷卡片 ===== */
.survey-list { display: flex; flex-direction: column; gap: 12px; }
.survey-card {
  display: block;
  background: var(--c-card);
  border-radius: var(--r-card);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
}
.survey-card:hover { border-color: var(--c-primary); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.survey-card.is-done { opacity: 0.6; cursor: not-allowed; background: #f3f4f6; }
.survey-card.is-done:hover { border-color: var(--c-border); box-shadow: var(--shadow-sm); transform: none; }
.survey-card h3 { margin: 0 0 6px; font-size: 17px; color: var(--c-text); }
.survey-card .meta { color: var(--c-text-soft); font-size: 13px; }

/* ===== 表单 ===== */
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 14px; color: var(--c-text-soft); margin-bottom: 6px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 16px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-btn);
  background: #fff;
  font-family: inherit;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(43,93,58,0.12);
}

/* ===== 问卷题渲染 ===== */
.q-section {
  background: var(--c-card);
  border-radius: var(--r-card);
  padding: 16px 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}
.q-section-title { font-size: 16px; font-weight: 600; margin: 0 0 8px; color: var(--c-primary); }
.q-section-instr { font-size: 13px; color: var(--c-text-soft); white-space: pre-line; margin-bottom: 12px; }
.q-item { padding: 12px 0; border-bottom: 1px solid var(--c-border); }
.q-item:last-child { border-bottom: none; }
.q-text { font-size: 15px; margin-bottom: 10px; }
.q-num { color: var(--c-text-soft); margin-right: 4px; font-weight: 500; }

/* Likert 5 横向 */
.likert5-options { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.likert5-options label {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 10px 4px; border: 1px solid var(--c-border); border-radius: 8px;
  cursor: pointer; transition: all 0.12s; text-align: center;
  font-size: 12px; color: var(--c-text-soft);
}
.likert5-options input { display: none; }
.likert5-options input:checked + span {
  color: #fff; font-weight: 600;
}
.likert5-options label:has(input:checked) {
  background: var(--c-primary);
  border-color: var(--c-primary);
}
.likert5-options label:has(input:checked) span { color: #fff; }
.likert5-options label .num { font-size: 16px; margin-bottom: 4px; color: inherit; }

/* Likert 10 - 较长，下拉更合适 */
.likert10-options { display: flex; flex-direction: column; gap: 6px; }
.likert10-options label {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 10px 12px; border: 1px solid var(--c-border); border-radius: 8px;
  cursor: pointer; font-size: 13px; color: var(--c-text-soft);
  transition: all 0.12s;
}
.likert10-options label .num {
  font-weight: 600; color: var(--c-primary); min-width: 22px; flex-shrink: 0;
}
.likert10-options input { display: none; }
.likert10-options label:has(input:checked) {
  background: #f0f7f1; border-color: var(--c-primary); color: var(--c-text);
}

/* 单选三选一（横向 3 列） */
.choice3-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.choice3-options label {
  text-align: center; padding: 14px 8px; border: 1px solid var(--c-border);
  border-radius: 8px; cursor: pointer; font-size: 14px; color: var(--c-text-soft);
  transition: all 0.12s;
}
.choice3-options input { display: none; }
.choice3-options label:has(input:checked) {
  background: var(--c-primary); color: #fff; border-color: var(--c-primary);
}

/* 句子完成题 */
.sentence-input { width: 100%; padding: 10px 12px; border: 1px solid var(--c-border); border-radius: 8px; font-size: 15px; }
.sentence-prefix { color: var(--c-text-soft); margin-bottom: 6px; font-size: 14px; }

/* 迫选题（A/B 二选一） */
.forced-options { display: flex; flex-direction: column; gap: 10px; }
.forced-option {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 14px; border: 1.5px solid var(--c-border);
  border-radius: 10px; background: #fff; cursor: pointer;
  transition: border-color .15s, background .15s;
}
.forced-option:hover { border-color: var(--c-primary, #2563eb); background: #f8fafc; }
.forced-option:has(input:checked) {
  border-color: var(--c-primary, #2563eb);
  background: #eff6ff;
}
.forced-option input { margin-top: 3px; accent-color: var(--c-primary, #2563eb); }
.forced-tag {
  display: inline-block; min-width: 22px; height: 22px; line-height: 22px;
  text-align: center; font-weight: 700; font-size: 13px;
  background: #e2e8f0; color: #475569; border-radius: 6px; flex-shrink: 0;
}
.forced-option:has(input:checked) .forced-tag { background: var(--c-primary, #2563eb); color: #fff; }
.forced-text { font-size: 15px; line-height: 1.55; color: var(--c-text); }

/* 多选题（pick-multi）：选项竖排，最多勾选 max 项 */
.pick-multi { display: flex; flex-direction: column; gap: 8px; }
.pick-option {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 11px 14px; border: 1.5px solid var(--c-border);
  border-radius: 10px; background: #fff; cursor: pointer;
  transition: border-color .15s, background .15s;
}
.pick-option:hover { border-color: var(--c-primary, #2563eb); background: #f8fafc; }
.pick-option:has(input:checked) {
  border-color: var(--c-primary, #2563eb);
  background: #eff6ff;
}
.pick-option input { margin-top: 3px; accent-color: var(--c-primary, #2563eb); width: 16px; height: 16px; flex-shrink: 0; }
.pick-text { font-size: 14px; line-height: 1.5; color: var(--c-text); }
.pick-tip { font-size: 12px; color: var(--c-text-soft); margin-top: 4px; }
.pick-tip .pick-count { font-weight: 700; color: var(--c-primary, #2563eb); }

/* 状态 */
.alert { padding: 12px 14px; border-radius: 8px; margin-bottom: 12px; font-size: 14px; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-info  { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }

/* 提交底部固定 */
.submit-bar {
  position: sticky; bottom: 0; background: rgba(255,255,255,0.95);
  backdrop-filter: blur(6px); padding: 12px 16px; margin: 16px -16px -16px;
  border-top: 1px solid var(--c-border); text-align: center;
}

/* 管理后台 */
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td {
  padding: 10px 12px; border-bottom: 1px solid var(--c-border); text-align: left; font-size: 14px;
}
.admin-table th { background: #f3f4f6; color: var(--c-text-soft); font-weight: 500; }
.admin-table tr:hover { background: #fafafa; }
.tag {
  display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px;
  background: #e0e7ff; color: #3730a3;
}

/* 移动端微调 */
@media (max-width: 480px) {
  .likert5-options { gap: 4px; }
  .likert5-options label { padding: 8px 2px; font-size: 11px; }
  .likert5-options label .num { font-size: 14px; }
  .header img { height: 56px; }
}