/* ================================================
   FIBEMATE 通用样式（所有页面共享）
   设计语言：深色极简 · Teal色系
   ================================================ */

:root {
  --bg-primary: #0A0A0F;
  --bg-card: #13131A;
  --bg-input: #1A2420;
  --bg-input-login: #162019;
  --bg-userbar: #0F1E18;
  --border-subtle: #2A2A32;
  --border-focus: #00E5C3;
  --accent: #00E5C3;
  --accent-dark: #00B4A0;
  --accent-dim: rgba(0, 229, 195, 0.10);
  --accent-glow: rgba(0, 229, 195, 0.40);
  --text-primary: #FFFFFF;
  --text-secondary: #8A8A96;
  --text-muted: #55555F;
  --danger: #FF4757;
  --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ================================================
   通用按钮
   ================================================ */

.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 13px;
  margin-top: 6px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border: none;
  border-radius: 8px;
  color: #0A0A0F;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.25s;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #00F5D0 0%, var(--accent) 100%);
  box-shadow: 0 6px 24px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 229, 195, 0.3);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-text {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 11px;
  font-family: var(--font-sans);
  cursor: pointer;
  padding: 8px;
  transition: color 0.2s;
  width: 100%;
  text-align: center;
  letter-spacing: 0.5px;
}

.btn-text:hover {
  color: var(--accent);
}

/* ================================================
   表单通用样式
   ================================================ */

.input-group {
  position: relative;
}

.input-group input {
  width: 100%;
  padding: 13px 14px;
  background: var(--bg-input-login);
  border: 1px solid rgba(0, 180, 140, 0.08);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
  outline: none;
  transition: background 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.input-group input::placeholder {
  color: var(--text-muted);
}

.input-group input:focus {
  background: #1A2B23;
  border-color: rgba(0, 229, 195, 0.25);
  box-shadow: 0 0 0 2px var(--accent-dim), inset 0 0 20px rgba(0, 180, 140, 0.04);
}

/* Input validation */
.input-valid {
  border-color: #00e57a !important;
  background: rgba(0, 229, 100, 0.08) !important;
}

.input-invalid {
  border-color: #ff7070 !important;
  background: rgba(255, 80, 80, 0.08) !important;
}

.input-error-msg {
  color: #ff7070;
  font-size: 11px;
  margin-top: 4px;
  display: none;
}

/* Keyboard shortcut hint */
.kbd-hint {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.1);
}

/* ================================================
   分隔线
   ================================================ */

.divider {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 6px 0;
}

.divider span:not(.divider-text) {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
}

.divider-text {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ================================================
   Toast 提示
   ================================================ */

.toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  font-size: 12px;
  color: var(--text-primary);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  z-index: 1000;
  animation: toastIn 0.3s ease-out;
  letter-spacing: 0.3px;
  max-width: 90%;
  text-align: center;
  font-family: var(--font-sans);
  font-weight: 500;
}

.toast.error {
  border-color: var(--danger);
  color: var(--danger);
}

.toast.success {
  border-color: var(--accent);
  color: var(--accent);
}

.toast.info {
  background: rgba(0, 229, 195, 0.15);
  border: 1px solid rgba(0, 229, 195, 0.3);
  color: var(--accent);
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

@keyframes slideUp {
  from { opacity: 0; transform: translate(-50%, 20px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* ================================================
   Loading Spinner
   ================================================ */

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

.spinner-sm {
  width: 12px;
  height: 12px;
  border-width: 1.5px;
}

.spinner-accent {
  border-color: rgba(0,229,195,0.3);
  border-top-color: var(--accent);
}

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

.btn-loading {
  position: relative;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  margin: -9px 0 0 -9px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ================================================
   错误消息
   ================================================ */

.error-msg {
  padding: 8px 12px;
  background: rgba(255, 80, 80, 0.1);
  border: 1px solid rgba(255, 80, 80, 0.3);
  border-radius: 8px;
  color: #ff7070;
  font-size: 11px;
  font-family: var(--font-sans);
  margin-top: 8px;
  animation: fadeIn 0.2s ease;
}

/* ================================================
   ZK Auth 样式（可复用组件）
   ================================================ */

.btn-secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 13px;
  background: rgba(0, 229, 195, 0.08);
  border: 1px solid rgba(0, 229, 195, 0.25);
  border-radius: 12px;
  color: var(--accent);
  font-size: 12px;
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all 0.25s;
  margin-top: 8px;
}

.btn-secondary:hover {
  background: rgba(0, 229, 195, 0.15);
  border-color: rgba(0, 229, 195, 0.5);
}

.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.zk-badge {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 16px;
  background: rgba(0, 229, 195, 0.05);
  border: 1px solid rgba(0, 229, 195, 0.15);
  border-radius: 10px;
  margin-bottom: 12px;
  font-size: 11px;
  color: rgba(0, 229, 195, 0.7);
  font-family: 'Courier New', monospace;
  animation: fadeIn 0.3s ease;
}

.zk-progress-bar {
  height: 4px;
  background: rgba(0, 229, 195, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 8px;
}

.zk-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #00B4A0);
  border-radius: 2px;
  width: 0%;
  transition: width 0.4s ease;
  box-shadow: 0 0 8px rgba(0, 229, 195, 0.5);
}

.zk-step {
  transition: color 0.3s, opacity 0.3s;
}

.zk-step.completed {
  color: #00e57a;
  opacity: 0.8;
}

.zk-toggle {
  margin: 10px 0;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-sans);
}

.toggle-label input[type="checkbox"] {
  display: none;
}

.toggle-switch {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--bg-input);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  transition: all 0.25s;
  flex-shrink: 0;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: all 0.25s;
}

.toggle-label input[type="checkbox"]:checked + .toggle-switch {
  background: rgba(0, 229, 195, 0.3);
  border-color: var(--accent);
}

.toggle-label input[type="checkbox"]:checked + .toggle-switch::after {
  left: 18px;
  background: var(--accent);
}

/* ================================================
   动画
   ================================================ */

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ================================================
   响应式
   ================================================ */

/* 平板设备 */
@media (max-width: 768px) {
  .ws-status {
    top: 8px;
    right: 8px;
    padding: 3px 8px;
    font-size: 10px;
  }
}

/* 大屏手机 */
@media (max-width: 480px) {
  .form-input {
    padding: 11px 14px;
    font-size: 16px; /* 防止 iOS 缩放 */
  }

  .btn-primary {
    padding: 12px;
    font-size: 15px;
  }

  .tab-btn {
    padding: 7px 10px;
    font-size: 12px;
  }

  .captcha-group .btn-captcha {
    padding: 8px 10px;
    font-size: 11px;
  }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
  .btn-primary:hover {
    transform: none;
    box-shadow: 0 0 20px var(--accent-glow);
  }

  .form-input:focus {
    transform: none;
  }

  .tab-btn,
  .btn-captcha,
  .more-option-btn {
    min-height: 44px;
  }

  .form-input {
    min-height: 44px;
  }
}

/* 横屏模式 */
@media (max-height: 500px) and (orientation: landscape) {
  .login-wrapper,
  .register-wrapper {
    align-items: flex-start;
    padding-top: 20px;
    overflow-y: auto;
  }
}