:root {
  --primary-color: #2e7d32;
  --primary-light: #60ad5e;
  --primary-dark: #005005;
  --secondary-color: #ffd54f;
  --text-color: #333;
  --light-text: #f5f5f5;
  --border-color: #e0e0e0;
  --background-color: #f9f9f9;
  --card-background: #ffffff;
  --success-color: #4caf50;
  --error-color: #f44336;
  --warning-color: #ff9800;
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.15);
  --transition-speed: 0.3s;
  --border-radius: 8px;
  --border-radius-small: 4px;
  --container-padding: 20px;
  --content-width: 1200px;
}

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

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

body {
  font-family: "微軟正黑體", "Microsoft JhengHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

h1 {
  color: var(--primary-color);
  font-size: clamp(1.5rem, 5vw, 2rem);
  line-height: 1.2;
}

h2 {
  color: var(--primary-dark);
  margin-bottom: 1rem;
  font-size: clamp(1.2rem, 4vw, 1.5rem);
}

h3 {
  color: var(--primary-color);
  font-size: clamp(1rem, 3vw, 1.2rem);
}

h4 {
  color: var(--primary-dark);
  margin-bottom: 0.5rem;
  font-size: clamp(0.9rem, 2.5vw, 1rem);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-speed);
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.back-btn {
  padding: 0.5rem 1rem;
  background-color: var(--primary-color);
  color: white;
  border-radius: var(--border-radius-small);
  text-decoration: none;
  font-weight: bold;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-speed), transform var(--transition-speed);
  white-space: nowrap;
}

.back-btn:hover {
  background-color: var(--primary-dark);
  text-decoration: none;
  transform: translateY(-2px);
}

button {
  cursor: pointer;
  font-family: inherit;
}

/* 首頁設備列表 */
.device-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.device-card {
  background-color: var(--card-background);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.device-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.device-card h3 {
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.ssid-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.ssid-tag {
  background-color: var(--secondary-color);
  padding: 0.3rem 0.625rem;
  border-radius: 20px;
  font-size: 0.875rem;
  color: #333333;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
}

.view-btn {
  display: block;
  text-align: center;
  padding: 0.75rem;
  background-color: var(--primary-color);
  color: white;
  border-radius: var(--border-radius-small);
  margin-top: auto;
  font-weight: bold;
  transition: background-color var(--transition-speed), transform var(--transition-speed);
}

.view-btn:hover {
  background-color: var(--primary-dark);
  text-decoration: none;
  transform: translateY(-2px);
}

/* 設備詳情頁 */
.device-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.refresh-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.refresh-btn {
  padding: 0.5rem 1rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius-small);
  cursor: pointer;
  font-weight: bold;
  transition: background-color var(--transition-speed), transform var(--transition-speed);
  display: inline-flex;
  align-items: center;
}

.refresh-btn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
}

.refresh-btn:active {
  transform: translateY(0);
}

.refresh-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.update-time {
  font-size: 0.875rem;
  color: #666;
}

.device-panel {
  background-color: var(--card-background);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: 1.25rem;
  overflow: hidden;
  transition: box-shadow var(--transition-speed);
}

.device-panel:hover {
  box-shadow: var(--shadow-hover);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background-color: #f5f5f5;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.status-badge {
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  font-weight: bold;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.online {
  background-color: var(--success-color);
  color: white;
}

.offline {
  background-color: var(--error-color);
  color: white;
}

.warning {
  background-color: var(--warning-color);
  color: white;
}

.panel-body {
  padding: 1.25rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.25rem;
}

.data-section {
  margin-bottom: 1.25rem;
}

.data-row {
  display: flex;
  margin-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 0.5rem;
  flex-wrap: wrap;
}

.data-label {
  min-width: 100px;
  font-weight: bold;
  color: #666;
  padding-right: 0.5rem;
}

.data-value {
  flex: 1;
  word-break: break-all;
}

.no-data {
  color: #999;
  font-style: italic;
}

.panel-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border-color);
  background-color: #f9f9f9;
}

details {
  cursor: pointer;
}

summary {
  cursor: pointer;
  outline: none;
  padding: 0.3rem 0;
}

.raw-data {
  margin-top: 0.75rem;
  background-color: #f1f1f1;
  padding: 0.75rem;
  border-radius: var(--border-radius-small);
  font-size: 0.875rem;
  overflow-x: auto;
  white-space: pre-wrap;
  color: #555;
  max-height: 200px;
  overflow-y: auto;
}

/* 錯誤頁面 */
.error-container {
  padding: 2rem;
  text-align: center;
}

.error-box {
  background-color: #fff0f0;
  border: 1px solid #ffd7d7;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.error-icon {
  font-size: 3rem;
  color: var(--error-color);
  margin-bottom: 1rem;
  line-height: 1;
}

.error-message {
  margin-top: 0.75rem;
  color: #d32f2f;
  font-weight: 500;
  max-width: 600px;
  line-height: 1.5;
}

/* 頁尾 */
footer {
  margin-top: 2rem;
  padding: 1rem 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
  color: #777;
  font-size: 0.875rem;
}

footer a {
  color: var(--primary-color);
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  transition: opacity var(--transition-speed), visibility var(--transition-speed);
}

.loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(0, 0, 0, 0.1);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s linear infinite;
}

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

/* 媒體查詢 */
/* 小屏幕設備 */
@media (max-width: 767px) {
  :root {
    --container-padding: 15px;
  }
  
  header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .back-btn {
    align-self: flex-start;
  }
  
  .device-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .refresh-controls {
    margin-top: 0.5rem;
  }
  
  .panel-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .status-badge {
    margin-top: 0.5rem;
  }
  
  .panel-body {
    display: block;
  }
  
  .data-row {
    flex-direction: column;
  }
  
  .data-label {
    width: 100%;
    margin-bottom: 0.25rem;
  }
}

/* 中屏幕設備 */
@media (min-width: 768px) and (max-width: 991px) {
  .device-cards {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
}

/* 觸控優化 */
@media (hover: none) {
  .back-btn,
  .view-btn,
  .refresh-btn {
    padding: 0.75rem 1rem; /* 增大觸控目標 */
  }
  
  .ssid-tag {
    padding: 0.4rem 0.75rem; /* 增大觸控目標 */
  }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
  :root {
    --text-color: #e0e0e0;
    --background-color: #121212;
    --card-background: #1e1e1e;
    --border-color: #333;
    --light-text: #f5f5f5;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.4);
  }
  
  .panel-header {
    background-color: #252525;
  }
  
  .panel-footer {
    background-color: #252525;
  }
  
  .raw-data {
    background-color: #252525;
    color: #ccc;
  }
  
  .error-box {
    background-color: rgba(244, 67, 54, 0.1);
    border-color: rgba(244, 67, 54, 0.3);
  }
  
  .loading-overlay {
    background-color: rgba(18, 18, 18, 0.8);
  }
  
  .loading-spinner {
    border-color: rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary-light);
  }
}

/* 列印樣式 */
@media print {
  .back-btn, .refresh-btn, .loading-overlay {
    display: none;
  }
  
  body {
    background-color: white;
    color: black;
  }
  
  .container {
    max-width: 100%;
    padding: 0;
  }
}

/* 動畫和過渡效果 */
.device-card, .device-panel {
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 無障礙優化 */
:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: white;
  padding: 8px;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}