/* 用户端页面样式 */

.page-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

/* ========== 主题切换按钮 ========== */

.theme-toggle-wrapper {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 1000;
}

.theme-toggle-button {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.theme-toggle-button:hover {
  transform: scale(1.08) rotate(10deg);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.theme-toggle-button:active {
  transform: scale(0.95) rotate(10deg);
}

.theme-toggle-button::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle-button:hover::before {
  opacity: 0.08;
}

.theme-icon {
  width: 22px;
  height: 22px;
  position: absolute;
  color: var(--text-primary);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  transform: scale(0.5) rotate(-90deg);
}

.theme-icon.active {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

/* 主题图标动画 */
@keyframes themeIconRotate {
  from {
    transform: scale(0.5) rotate(-180deg);
    opacity: 0;
  }
  to {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
}

/* ========== 购买卡密提示 ========== */

.purchase-hint {
  position: fixed;
  top: var(--spacing-lg);
  right: calc(var(--spacing-lg) + 60px); /* 主题按钮右侧 */
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-sm) var(--spacing-md);
  box-shadow: var(--shadow-lg);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: slideInRight 0.6s var(--ease-out);
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.purchase-hint:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.purchase-icon {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

.purchase-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.purchase-title {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  line-height: 1;
}

.purchase-link {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--primary);
  text-decoration: none;
  line-height: 1.2;
  transition: color 0.2s ease;
}

.purchase-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* ========== 背景装饰 ========== */

.bg-decoration {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
}

.blob-1 {
  width: 400px;
  height: 400px;
  background: linear-gradient(135deg, var(--primary), var(--info));
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}

.blob-2 {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, var(--info), var(--primary));
  bottom: -80px;
  right: -80px;
  animation-delay: 7s;
}

.blob-3 {
  width: 250px;
  height: 250px;
  background: linear-gradient(135deg, var(--primary), hsl(var(--primary-h) var(--primary-s) 70%));
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 14s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -30px) scale(1.1);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

/* ========== 主内容卡片 ========== */

.main-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 480px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-xl);
  animation: slideUp 0.6s var(--ease-out);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== 头部区域 ========== */

.header-section {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.logo-wrapper {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-md);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.7);
  }
  50% {
    box-shadow: 0 0 0 12px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0);
  }
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: white;
}

.main-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

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

/* ========== 表单区域 ========== */

.form-section {
  margin-bottom: var(--spacing-xl);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.label-icon {
  width: 16px;
  height: 16px;
  color: var(--primary);
}

.form-input {
  width: 100%;
  height: 48px;
  padding: 0 var(--spacing-md);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--background);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  outline: none;
  transition: all var(--transition-fast) var(--ease-in-out);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.1);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.input-hint {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

/* ========== 提交按钮 ========== */

.submit-button {
  width: 100%;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast) var(--ease-in-out);
  position: relative;
  overflow: hidden;
}

.submit-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.submit-button:hover::before {
  left: 100%;
}

.submit-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.4);
}

.submit-button:active {
  transform: translateY(0);
}

.submit-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.button-text,
.button-loading {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.button-icon {
  width: 20px;
  height: 20px;
}

.spinner {
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
}

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

/* ========== 消息提示框 ========== */

.message-box {
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: var(--text-sm);
  animation: slideDown 0.3s var(--ease-out);
}

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

.message-box.success {
  background: var(--success-light);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.message-box.error {
  background: var(--error-light);
  color: var(--error);
  border: 1px solid var(--error-border);
}

.message-box.info {
  background: var(--info-light);
  color: var(--info);
  border: 1px solid var(--info-border);
}

/* ========== 信息说明区域 ========== */

.info-section {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.info-item:last-child {
  margin-bottom: 0;
}

.info-icon {
  width: 18px;
  height: 18px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.info-item p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ========== 页脚 ========== */

.page-footer {
  position: relative;
  z-index: 1;
  margin-top: var(--spacing-xl);
  text-align: center;
}

.page-footer p {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

/* ========== 向下滚动提示按钮 ========== */

.scroll-hint-button {
  position: fixed;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  background: var(--card);
  box-shadow: 0 4px 16px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.4);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000; /* 增加z-index确保在最上层 */
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: bounce 2s ease-in-out infinite;
}

.scroll-hint-button svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
}

.scroll-hint-button:hover {
  transform: translateX(-50%) scale(1.1);
  box-shadow: 0 6px 24px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.5);
  background: var(--primary);
}

.scroll-hint-button:hover svg {
  color: white;
}

.scroll-hint-button:active {
  transform: translateX(-50%) scale(0.95);
}

/* 滚动后隐藏按钮 */
.scroll-hint-button.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* 弹跳动画 */
@keyframes bounce {
  0%, 100% {
    bottom: var(--spacing-2xl);
  }
  50% {
    bottom: calc(var(--spacing-2xl) + 12px);
  }
}

/* ========== 使用流程区块 ========== */

.how-to-section {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 960px; /* 比主卡片的480px宽，防止文字换行 */
  margin-top: var(--spacing-xl);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.6s var(--ease-out) 0.1s both;
}

.section-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.steps-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg); /* 增加间距 */
}

.step-item {
  flex: 1;
  min-width: 200px; /* 设置最小宽度，确保文字不换行 */
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg); /* 增加左右内边距 */
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast) var(--ease-in-out);
}

.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
  box-shadow: 0 4px 12px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.3);
}

.step-title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.step-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.step-arrow {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--text-tertiary);
}

.step-arrow svg {
  width: 100%;
  height: 100%;
}

/* ========== 需要帮助区块 ========== */

.help-section {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 960px; /* 与使用流程保持一致 */
  margin-top: var(--spacing-lg);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.6s var(--ease-out) 0.2s both;
}

.help-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.help-text {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  flex: 1;
}

.help-icon {
  width: 24px;
  height: 24px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.help-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.help-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.telegram-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  height: 48px;
  padding: 0 var(--spacing-xl);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  border: none;
  border-radius: var(--radius-lg);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast) var(--ease-in-out);
  white-space: nowrap;
  box-shadow: 0 4px 12px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.3);
}

.telegram-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.4);
}

.telegram-button:active {
  transform: translateY(0);
}

.telegram-icon {
  width: 20px;
  height: 20px;
}

/* ========== 响应式设计 ========== */

@media (max-width: 640px) {
  .page-container {
    padding: var(--spacing-md);
  }

  .main-card {
    padding: var(--spacing-xl);
  }

  .main-title {
    font-size: var(--text-2xl);
  }

  .blob {
    filter: blur(60px);
  }

  /* 购买卡密提示移动端 */
  .purchase-hint {
    top: calc(var(--spacing-lg) + 60px); /* 移到主题按钮下方 */
    right: var(--spacing-lg);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .purchase-icon {
    width: 16px;
    height: 16px;
  }

  .purchase-title {
    font-size: 10px;
  }

  .purchase-link {
    font-size: 11px;
  }

  /* 使用流程响应式 */
  .how-to-section {
    padding: var(--spacing-lg);
  }

  .section-title {
    font-size: var(--text-lg);
  }

  .steps-container {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .step-arrow {
    transform: rotate(90deg);
    margin: var(--spacing-sm) 0;
  }

  .step-number {
    width: 48px;
    height: 48px;
    font-size: var(--text-xl);
  }

  .step-title {
    font-size: var(--text-sm);
  }

  .step-desc {
    font-size: var(--text-xs);
  }

  /* 需要帮助响应式 */
  .help-section {
    padding: var(--spacing-lg);
  }

  .help-content {
    flex-direction: column;
    align-items: stretch;
  }

  .help-title {
    font-size: var(--text-base);
  }

  .help-desc {
    font-size: var(--text-xs);
  }

  .telegram-button {
    width: 100%;
    height: 44px;
  }

  /* 滚动提示按钮移动端优化 */
  .scroll-hint-button {
    width: 48px;
    height: 48px;
    bottom: var(--spacing-lg);
  }

  .scroll-hint-button svg {
    width: 24px;
    height: 24px;
  }

  @keyframes bounce {
    0%, 100% {
      bottom: var(--spacing-lg);
    }
    50% {
      bottom: calc(var(--spacing-lg) + 10px);
    }
  }
}

@media (max-width: 480px) {
  .main-card {
    padding: var(--spacing-lg);
  }

  .form-input,
  .submit-button {
    height: 44px;
  }
}