/* Vercel 风格 IP 查询工具 - 三行布局 */

/* 主题变量 */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #fafafa;
  --bg-card: #ffffff;
  --text-primary: #000000;
  --text-secondary: #666666;
  --border: #eaeaea;
  --accent: #0070f3;
  --accent-hover: #0060df;
  --success: #0070f3;
  --error: #ee0000;
  --shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #111111;
  --bg-card: #111111;
  --text-primary: #ffffff;
  --text-secondary: #888888;
  --border: #333333;
  --accent: #0070f3;
  --accent-hover: #3291ff;
  --shadow: rgba(255, 255, 255, 0.1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #000000;
    --bg-secondary: #111111;
    --bg-card: #111111;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --border: #333333;
    --accent: #0070f3;
    --accent-hover: #3291ff;
    --shadow: rgba(255, 255, 255, 0.1);
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 40px 20px;
  flex: 1;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.theme-switcher {
  display: flex;
  gap: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
}

.theme-btn {
  background: transparent;
  border: none;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.2s ease;
  opacity: 0.6;
}

.theme-btn:hover {
  opacity: 1;
  background: var(--bg-card);
}

.theme-btn.active {
  opacity: 1;
  background: var(--bg-card);
  box-shadow: 0 1px 3px var(--shadow);
}

/* Main Layout */
main {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* 全宽卡片 */
.full-width-card {
  width: 100%;
}

/* 访问者 IP 大字体显示 */
.visitor-ip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 20px 0;
}

.ip-value-large {
  font-family: 'Courier New', monospace;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
}

/* 两列布局 */
.two-column-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.left-panel,
.right-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Card */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s ease;
}

.card:hover {
  border-color: var(--text-secondary);
}

.card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
  /* text-transform: uppercase; */
  letter-spacing: 0.5px;
}

.card-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* IP Display */
.ip-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.ip-row:last-child {
  border-bottom: none;
}

.ip-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.ip-value {
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ip-text {
  flex: 1;
  word-break: break-all;
  overflow-wrap: break-word;
  min-width: 0;
}

.copy-icon-btn {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  flex-shrink: 0;
  white-space: nowrap;
}

.copy-icon-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.1);
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  color: var(--text-secondary);
  font-weight: 500;
}

.copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--bg-secondary);
}

/* Geo Info */
.geo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.geo-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.geo-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.geo-value {
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* 第三行：服务商网格 */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-item {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.service-ips {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ip-row-inline {
  display: flex;
  align-items: center;
  gap: 8px;
}

.protocol-tag {
  font-size: 0.75rem;
  padding: 2px 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  font-weight: 600;
  flex-shrink: 0;
}

.ip-address {
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 600;
  word-break: break-all;
  display: flex;
  align-items: center;
  gap: 6px;
}

.ip-loading, .ip-error, .ip-na, .ip-blocked {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-style: italic;
}

.ip-blocked {
  color: #ff6b6b;
  font-style: normal;
}

/* Copy Toast 提示 */
.copy-toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 12px var(--shadow);
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s ease;
}

.copy-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.copy-toast.error {
  background: #fee;
  color: #c00;
  border-color: #fcc;
}

/* Loading */
.loading {
  text-align: center;
  padding: 60px 20px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Footer */
footer {
  text-align: center;
  padding: 40px 20px 20px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

footer a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Responsive */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .two-column-layout {
    grid-template-columns: 1fr;
  }

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

  h1 {
    font-size: 1.5rem;
  }

  .ip-value-large {
    font-size: 1.5rem;
    word-break: break-all;
    overflow-wrap: break-word;
  }

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

  .theme-switcher {
    gap: 4px;
  }

  .theme-btn {
    padding: 6px 10px;
    font-size: 1rem;
  }
  
  /* 移动端 IP 显示优化 */
  .ip-value {
    font-size: 0.875rem;
    flex-wrap: wrap;
  }
  
  .ip-text {
    max-width: 100%;
    padding: 0 1rem;
  }
  
  .ip-address {
    font-size: 0.8125rem;
  }
  
  .card {
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 20px 16px;
  }

  header {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }

  .card {
    padding: 12px;
  }

  .ip-value-large {
    font-size: 1.25rem;
  }
  
  .ip-value {
    font-size: 0.8125rem;
  }
  
  .ip-address {
    font-size: 0.75rem;
  }
  
  .protocol-tag {
    font-size: 0.6875rem;
    padding: 2px 6px;
  }
}