/* ============================================================
   登录页面样式
   ============================================================ */

:root {
  --primary-color: #0088fe;
  --primary-hover: #0066cc;
  --bg-primary: #f0f2f5;
  --bg-card: #ffffff;
  --text-primary: #1a1a2e;
  --text-secondary: #666;
  --text-muted: #999;
  --border-color: #e8e8e8;
  --error-color: #f44336;
  --success-color: #4caf50;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #fafbfc;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-container {
  width: 100%;
  max-width: 420px;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 40px 32px;
  margin-bottom: 20px;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.logo {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
}

.login-header h1 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.subtitle {
  font-size: 14px;
  color: var(--text-secondary);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-card);
  transition: all 0.2s;
}

.input-wrapper:focus-within {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 136, 254, 0.1);
}

.area-code {
  padding: 0 12px;
  font-size: 14px;
  color: var(--text-secondary);
  border-right: 1px solid var(--border-color);
}

.input-wrapper input {
  flex: 1 1 auto;
  min-width: 0;
  border: none;
  outline: none;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-primary);
  background: transparent;
}

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

.code-wrapper {
  gap: 8px;
  padding-right: 8px;
}

.send-code-btn {
  flex: 0 0 auto;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary-color);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.send-code-btn:hover:not(:disabled) {
  background: rgba(0, 136, 254, 0.1);
}

.send-code-btn:disabled {
  color: var(--text-muted);
  cursor: not-allowed;
}

.error-message {
  display: none;
  padding: 12px;
  background: #ffebee;
  border: 1px solid #ffcdd2;
  border-radius: 8px;
  color: var(--error-color);
  font-size: 13px;
  animation: shake 0.3s ease;
}

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

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

.login-btn {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  font-weight: 600;
  color: white;
  background: var(--primary-color);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  margin-top: 8px;
}

.login-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 136, 254, 0.3);
}

.login-btn:active:not(:disabled) {
  transform: translateY(0);
}

.login-btn:disabled {
  background: #ccc;
  cursor: not-allowed;
  transform: none;
}

.login-btn.loading {
  position: relative;
  color: transparent;
}

.login-btn.loading::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin-left: -10px;
  margin-top: -10px;
  border: 2px solid white;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

.login-tips {
  text-align: center;
  margin-top: 16px;
}

.login-tips p {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.privacy-text {
  font-size: 11px;
}

.privacy-text a {
  color: var(--primary-color);
  text-decoration: none;
}

.privacy-text a:hover {
  text-decoration: underline;
}

.login-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
}

/* 响应式 */
@media (max-width: 480px) {
  .login-card {
    padding: 32px 24px;
  }

  .login-header h1 {
    font-size: 20px;
  }

  .send-code-btn {
    font-size: 12px;
    padding: 6px 12px;
  }
}