/* ===== styles.css ===== */
/* PaperMod 风格极简样式 - 白底黑字，支持暗色模式 */

/* ---------- CSS 变量 ---------- */
:root {
  --color-bg: #ffffff;
  --color-text: #222222;
  --color-text-secondary: #666666;
  --color-border: #e0e0e0;
  --color-primary: #000000;
  --color-primary-hover: #333333;
  --color-accent: #555555;
  --color-success-bg: #f0fdf4;
  --color-success-text: #166534;
  --color-error-bg: #fef2f2;
  --color-error-text: #991b1b;
  --color-code-bg: #f5f5f5;
  --color-nav-bg: rgba(255, 255, 255, 0.95);
  --color-card-bg: #fafafa;
  --color-input-bg: #ffffff;
  --color-input-border: #cccccc;
  --radius: 6px;
  --max-width: 800px;
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
  --transition: 0.2s ease;
}

/* ---------- 暗色模式 ---------- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1a1a1a;
    --color-text: #e0e0e0;
    --color-text-secondary: #999999;
    --color-border: #333333;
    --color-primary: #ffffff;
    --color-primary-hover: #cccccc;
    --color-accent: #aaaaaa;
    --color-success-bg: #0a2e1a;
    --color-success-text: #86efac;
    --color-error-bg: #2e0a0a;
    --color-error-text: #fca5a5;
    --color-code-bg: #2a2a2a;
    --color-nav-bg: rgba(26, 26, 26, 0.95);
    --color-card-bg: #222222;
    --color-input-bg: #2a2a2a;
    --color-input-border: #444444;
  }
}

/* ---------- 全局重置 ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-stack);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-nav-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  padding: 0 20px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.navbar-inner {
  max-width: var(--max-width);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.5px;
}

.navbar-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.navbar-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}

.navbar-links a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

/* ---------- 主容器 ---------- */
.main-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 20px 40px;
  min-height: calc(100vh - 60px);
}

/* ---------- 视图切换 ---------- */
.view {
  display: none;
}

.view.active {
  display: block;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 内容板块 ---------- */
.section {
  padding: 40px 0;
}

.section:not(:last-child) {
  border-bottom: 1px solid var(--color-border);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}

.section-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

/* ---------- 首页英雄区 ---------- */
.hero {
  text-align: center;
  padding: 60px 0 40px;
}

.hero-callsign {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.hero-desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

/* ---------- 台站信息卡片 ---------- */
.station-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 8px;
}

.station-item {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.station-item-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.station-item-value {
  font-size: 1rem;
  font-weight: 500;
}

/* ---------- 日志列表 ---------- */
.log-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.log-item {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 0.8fr 1.2fr;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
  align-items: center;
}

.log-item:first-child {
  border-top: 1px solid var(--color-border);
}

.log-item.header {
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--color-text-secondary);
  background: var(--color-card-bg);
}

.log-item .callsign {
  font-weight: 600;
}

.log-empty {
  text-align: center;
  color: var(--color-text-secondary);
  padding: 40px 20px;
}

/* ---------- 加载更多按钮 ---------- */
.load-more-btn {
  display: block;
  margin: 24px auto 0;
  padding: 10px 32px;
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.load-more-btn:hover {
  border-color: var(--color-text);
  background: var(--color-card-bg);
}

.load-more-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 10px 28px;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-text);
  background: var(--color-card-bg);
}

.btn-danger {
  background: var(--color-error-text);
  color: white;
}

.btn-danger:hover {
  opacity: 0.85;
}

.btn-large {
  padding: 14px 36px;
  font-size: 1.05rem;
}

.btn-block {
  display: block;
  width: 100%;
}

/* ---------- 表单 ---------- */
.form-section-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-label .required {
  color: #dc2626;
  margin-left: 2px;
  font-weight: 700;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-input-bg);
  color: var(--color-text);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-text);
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
}

.form-select {
  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='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

.form-checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 20px 0;
  padding: 16px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.form-checkbox-group input[type="checkbox"] {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  accent-color: var(--color-primary);
}

.form-checkbox-group label {
  font-size: 0.9rem;
  line-height: 1.5;
  cursor: pointer;
}

/* 蜜罐字段 - 对用户不可见 */
.honeypot-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

/* ---------- 错误消息 ---------- */
.error-message {
  background: var(--color-error-bg);
  color: var(--color-error-text);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 16px;
  display: none;
}

.error-message.show {
  display: block;
}

/* ---------- 成功页面 ---------- */
.success-container {
  text-align: center;
  padding: 60px 20px;
}

.success-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  line-height: 1;
}

.success-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.success-subtitle {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.success-details {
  max-width: 500px;
  margin: 0 auto;
  text-align: left;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.success-detail-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.success-detail-item:last-child {
  border-bottom: none;
}

.success-detail-item .label {
  color: var(--color-text-secondary);
  font-weight: 500;
}

.success-detail-item .value {
  font-weight: 600;
}

/* ---------- 管理后台 ---------- */
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.admin-header h2 {
  font-size: 1.3rem;
  font-weight: 600;
}

.admin-search-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 20px;
}

.admin-search-bar input {
  flex: 1;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--color-input-bg);
  color: var(--color-text);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius);
  outline: none;
}

.admin-search-bar input:focus {
  border-color: var(--color-text);
}

.admin-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* 管理后台表格 */
.admin-table-wrapper {
  overflow-x: auto;
  margin-bottom: 16px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  min-width: 800px;
}

.admin-table th {
  background: var(--color-card-bg);
  text-align: left;
  padding: 10px 12px;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.admin-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.admin-table tr:hover td {
  background: var(--color-card-bg);
}

.admin-table .delete-btn {
  background: none;
  border: none;
  color: var(--color-error-text);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 4px 8px;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.admin-table .delete-btn:hover {
  background: var(--color-error-bg);
}

.admin-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  padding-top: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 密码弹窗 ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.modal-overlay.show {
  display: flex;
}

.modal-box {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 32px;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

.modal-box h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.modal-box .btn {
  margin-right: 8px;
}

/* ---------- 加载状态 ---------- */
.loading-dots::after {
  content: '';
  animation: dots 1.2s steps(4, end) infinite;
}

@keyframes dots {
  0% { content: ''; }
  25% { content: '.'; }
  50% { content: '..'; }
  75% { content: '...'; }
  100% { content: ''; }
}

.loading-overlay {
  text-align: center;
  padding: 40px;
  color: var(--color-text-secondary);
}

/* ---------- 页脚 ---------- */
.footer {
  text-align: center;
  padding: 32px 20px;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.footer a:hover {
  color: var(--color-text);
}

.footer .lock-icon {
  display: inline-block;
  margin-left: 8px;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.footer .lock-icon:hover {
  color: var(--color-text);
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .main-container {
    padding: 72px 16px 32px;
  }

  .hero-callsign {
    font-size: 2rem;
  }

  .station-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .log-item {
    grid-template-columns: 1.2fr 0.6fr 0.6fr 1fr;
    font-size: 0.8rem;
    padding: 10px 12px;
  }

  .admin-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .admin-table {
    font-size: 0.8rem;
    min-width: 600px;
  }

  .admin-table th,
  .admin-table td {
    padding: 8px;
  }

  .navbar-links {
    gap: 16px;
  }

  .navbar-links a {
    font-size: 0.8rem;
  }
}

@media (max-width: 400px) {
  .navbar-links a {
    font-size: 0.75rem;
  }

  .hero-callsign {
    font-size: 1.7rem;
  }
}