/* ========================================
   组件库 - 烟农1212代言活动H5
   ======================================== */

/* === 按钮组件 === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  height: 52px;
  padding: 0 var(--spacing-xl);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  transition: all var(--duration-fast) ease;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  min-width: 120px;
}

.btn:active {
  transform: scale(0.95);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-white);
  box-shadow: var(--shadow-gold);
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255,255,255,0.25), transparent);
  border-radius: var(--radius-xl) var(--radius-xl) 50% 50%;
  pointer-events: none;
}

.btn-green {
  background: linear-gradient(135deg, var(--color-green), var(--color-green-dark));
  color: var(--color-white);
  box-shadow: var(--shadow-green);
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.btn-green::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255,255,255,0.2), transparent);
  border-radius: var(--radius-xl) var(--radius-xl) 50% 50%;
  pointer-events: none;
}

.btn-outline {
  border: 2px solid var(--color-brown);
  color: var(--color-brown);
  background: var(--color-white);
}

.btn-outline:active {
  background: var(--color-bg-warm);
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-lg {
  height: 60px;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-full);
}

.btn-sm {
  height: 40px;
  padding: 0 var(--spacing-lg);
  font-size: var(--font-size-base);
  border-radius: var(--radius-full);
}

.btn-disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* === 卡片组件 === */
.card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.card-bordered {
  border: 1px solid var(--color-border);
}

.card-gold {
  background: linear-gradient(135deg, #FFF8E1, #FFECB3);
  border: 1px solid var(--color-gold-light);
}

.card-green {
  background: linear-gradient(135deg, #E8F5E9, #C8E6C9);
  border: 1px solid var(--color-green-light);
}

.card-red {
  background: linear-gradient(135deg, #FFEBEE, #FFCDD2);
  border: 1px solid #EF9A9A;
}

.card-orange {
  background: linear-gradient(135deg, #FFF3E0, #FFE0B2);
  border: 1px solid #FFCC80;
}

/* === 表单组件 === */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.form-input {
  width: 100%;
  height: 52px;
  padding: 0 var(--spacing-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  background: var(--color-white);
  transition: border-color var(--duration-fast);
  color: var(--color-text-primary);
}

.form-input:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
}

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

.form-select {
  width: 100%;
  height: 52px;
  padding: 0 var(--spacing-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  background: var(--color-white);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238D6E63' stroke-width='2' stroke-linecap='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  color: var(--color-text-primary);
}

.form-select:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
}

.form-checkbox input[type="checkbox"] {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  margin-top: 1px;
  accent-color: var(--color-gold);
  cursor: pointer;
}

/* === 步骤条组件 === */
.stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-base) var(--spacing-sm);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.stepper-item {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 12px;
  color: var(--color-text-light);
  white-space: nowrap;
}

.stepper-item.active {
  color: var(--color-gold-dark);
  font-weight: var(--font-weight-bold);
}

.stepper-item.completed {
  color: var(--color-green);
}

.stepper-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: var(--font-weight-bold);
  background: var(--color-border);
  color: var(--color-text-light);
  flex-shrink: 0;
}

.stepper-item.active .stepper-dot {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-white);
}

.stepper-item.completed .stepper-dot {
  background: var(--color-green);
  color: var(--color-white);
}

.stepper-line {
  width: 12px;
  height: 2px;
  background: var(--color-border);
  margin: 0 2px;
  flex-shrink: 0;
}

.stepper-line.active {
  background: var(--color-green);
}

/* === 进度条组件 === */
.progress-bar {
  width: 100%;
  height: 28px;
  background: #E8D5B5;
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  transition: width var(--duration-slow) ease;
  position: relative;
  min-width: 28px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: var(--spacing-sm);
}

.progress-fill::after {
  content: '✦';
  font-size: 16px;
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
}

.progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-brown);
  text-shadow: 0 1px 2px rgba(255,255,255,0.5);
  white-space: nowrap;
  z-index: 2;
}

/* === 上传区域组件 === */
.upload-area {
  width: 100%;
  height: 200px;
  border: 3px dashed var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  background: var(--color-bg-warm);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.upload-area:active {
  border-color: var(--color-gold);
  background: #FFF3D6;
}

.upload-area .upload-icon {
  font-size: 48px;
  color: var(--color-brown-light);
}

.upload-area .upload-text {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.upload-area .upload-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* === 头像组件 === */
.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  color: var(--color-white);
  flex-shrink: 0;
  border: 2px solid var(--color-white);
  box-shadow: var(--shadow-sm);
}

.avatar-sm {
  width: 36px;
  height: 36px;
  font-size: var(--font-size-base);
}

.avatar-lg {
  width: 64px;
  height: 64px;
  font-size: var(--font-size-xxl);
}

/* === 印章组件 === */
.stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border: 3px solid #C62828;
  border-radius: 50%;
  color: #C62828;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-black);
  transform: rotate(-15deg);
  opacity: 0.85;
  position: relative;
}

.stamp::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid #C62828;
  border-radius: 50%;
}

/* === 标签组件 === */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.tag-gold {
  background: linear-gradient(135deg, #FFF8E1, #FFECB3);
  color: var(--color-gold-dark);
  border: 1px solid var(--color-gold-light);
}

.tag-green {
  background: linear-gradient(135deg, #E8F5E9, #C8E6C9);
  color: var(--color-green-dark);
  border: 1px solid var(--color-green-light);
}

.tag-red {
  background: linear-gradient(135deg, #FFEBEE, #FFCDD2);
  color: #C62828;
  border: 1px solid #EF9A9A;
}

/* === Toast提示 === */
.toast {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--color-overlay);
  color: var(--color-white);
  padding: var(--spacing-lg) var(--spacing-xxl);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  z-index: var(--z-toast);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal);
  text-align: center;
  max-width: 280px;
}

.toast.show {
  opacity: 1;
}

/* === 确认弹窗 === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal);
}

.modal-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xxl);
  width: 100%;
  max-width: 320px;
  text-align: center;
  transform: scale(0.9);
  transition: transform var(--duration-normal);
}

.modal-overlay.show .modal-box {
  transform: scale(1);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-base);
}

.modal-content {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: var(--line-height-loose);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-base);
}

.modal-actions .btn {
  flex: 1;
}

/* === 飘落动效 === */
.confetti-container {
  position: fixed;
  inset: 0;
  z-index: var(--z-loading);
  pointer-events: none;
  overflow: hidden;
}

.confetti-item {
  position: absolute;
  animation: confetti-fall linear forwards;
}

@keyframes confetti-fall {
  0% {
    transform: translateY(-20px) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(720deg);
    opacity: 0;
  }
}

/* === 麦穗旋转Loading === */
.wheat-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xxl);
}

.wheat-loading .wheat-icon {
  font-size: 40px;
  animation: wheat-spin 1.5s linear infinite;
}

@keyframes wheat-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* === 证书翻转动效 === */
.certificate-flip {
  perspective: 1000px;
}

.certificate-flip-inner {
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.certificate-flip.flipped .certificate-flip-inner {
  transform: rotateY(180deg);
}

.certificate-front,
.certificate-back {
  backface-visibility: hidden;
}

.certificate-back {
  transform: rotateY(180deg);
}

/* === 页面切换动效 === */
.page {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--color-bg);
  transform: translateX(100%);
  transition: transform var(--duration-page) cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  will-change: transform;
  visibility: hidden;
  pointer-events: none;
}

.page.active {
  transform: translateX(0);
  z-index: 2;
  visibility: visible;
  pointer-events: auto;
}

.page.prev {
  transform: translateX(-30%);
  z-index: 1;
}

/* === 底部导航栏 === */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  display: flex;
  z-index: 50;
  padding: 6px 0;
  padding-bottom: calc(6px + env(safe-area-inset-bottom));
  box-shadow: 0 -2px 8px rgba(0,0,0,0.06);
  box-sizing: border-box;
}

.bottom-nav-item {
  flex: 1;
  background: none;
  border: none;
  padding: 8px 0;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  color: var(--color-text-light);
  transition: color var(--duration-fast);
}

.bottom-nav-item:active {
  color: var(--color-gold-dark);
}

.bottom-nav-item .nav-icon {
  font-size: 22px;
}

/* === 折叠面板 === */
.collapse {
  overflow: hidden;
}

.collapse-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  cursor: pointer;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-md);
}

.collapse-header .arrow {
  transition: transform var(--duration-normal);
  font-size: var(--font-size-sm);
}

.collapse.open .collapse-header .arrow {
  transform: rotate(180deg);
}

.collapse-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) ease;
}

.collapse.open .collapse-body {
  max-height: 1000px;
}

/* === 横向滚动 === */
.scroll-x {
  display: flex;
  overflow-x: auto;
  gap: var(--spacing-base);
  padding: var(--spacing-base);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.scroll-x::-webkit-scrollbar {
  display: none;
}

.scroll-x > * {
  scroll-snap-align: start;
  flex-shrink: 0;
}