/**
 * 微交互和反馈样式模块
 * 为按钮、表单、卡片等关键交互元素添加细腻的反馈效果
 * 增强产品精致感和用户确认感
 */

/* ========== 基础交互变量 ========== */
:root {
  /* 过渡时长 */
  --transition-fast: 100ms;
  --transition-base: 200ms;
  --transition-slow: 300ms;
  
  /* 缓动函数 */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-in-out: cubic-bezier(0.42, 0, 0.58, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* 反馈颜色 */
  --focus-ring: 0 0 0 3px rgba37, 99, 235, 0.4;
  --focus-ring-dark: 0 0 0 3px rgba96, 165, 250, 0.4;
}

/* ========== 按钮微交互 ========== */

/* 统一按钮基础过渡 */
button,
.btn,
.theme-toggle,
.mobile-menu-btn,
.print-btn,
.back-to-top,
.navbar-toggle,
.calc-num-btn,
.num-btn,
.fav-btn,
.booking-btn,
.compare-btn {
  transition: 
    background-color var(--transition-base) var(--ease-out),
    border-color var(--transition-base) var(--ease-out),
    color var(--transition-base) var(--ease-out),
    transform var(--transition-fast) var(--ease-out),
    box-shadow var(--transition-base) var(--ease-out);
}

/* 悬停反馈 */
button:hover,
.btn:hover,
.theme-toggle:hover,
.mobile-menu-btn:hover,
.print-btn:hover,
.back-to-top:hover,
.navbar-toggle:hover,
.calc-num-btn:hover,
.num-btn:hover,
.fav-btn:hover,
.booking-btn:hover,
.compare-btn:hover {
  transform: translateY(-1px);
}

/* 点击反馈 */
button:active,
.btn:active,
.theme-toggle:active,
.mobile-menu-btn:active,
.print-btn:active,
.back-to-top:active,
.navbar-toggle:active,
.calc-num-btn:active,
.num-btn:active,
.fav-btn:active,
.booking-btn:active,
.compare-btn:active {
  transform: translateY(0) scale(0.98);
  transition-duration: 50ms;
}

/* 焦点可见样式 - 无障碍 */
button:focus-visible,
.btn:focus-visible,
.theme-toggle:focus-visible,
.mobile-menu-btn:focus-visible,
.print-btn:focus-visible,
.back-to-top:focus-visible,
.navbar-toggle:focus-visible,
.calc-num-btn:focus-visible,
.num-btn:focus-visible,
.fav-btn:focus-visible,
.booking-btn:focus-visible,
.compare-btn:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

[data-theme="dark"] button:focus-visible,
[data-theme="dark"] .btn:focus-visible,
[data-theme="dark"] .theme-toggle:focus-visible,
[data-theme="dark"] .mobile-menu-btn:focus-visible,
[data-theme="dark"] .print-btn:focus-visible,
[data-theme="dark"] .back-to-top:focus-visible,
[data-theme="dark"] .navbar-toggle:focus-visible,
[data-theme="dark"] .calc-num-btn:focus-visible,
[data-theme="dark"] .num-btn:focus-visible,
[data-theme="dark"] .fav-btn:focus-visible,
[data-theme="dark"] .booking-btn:focus-visible,
[data-theme="dark"] .compare-btn:focus-visible,
[data-theme="dark"] a:focus-visible,
[data-theme="dark"] input:focus-visible,
[data-theme="dark"] select:focus-visible,
[data-theme="dark"] textarea:focus-visible {
  box-shadow: var(--focus-ring-dark);
}

/* 禁用状态 */
button:disabled,
.btn:disabled,
button[aria-disabled="true"],
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ========== 链接微交互 ========== */
a {
  transition: color var(--transition-fast) var(--ease-out);
}

/* ========== 卡片微交互 ========== */
.spot-card,
.food-card,
.food-grid-item,
.hotel-card,
.knowledge-card,
.timeline-card,
.alt-card,
.rating-item,
.compare-card,
.compare-select-item,
.hotel-card,
.tip-card,
.interact-card,
.safety-card {
  transition: 
    transform var(--transition-base) var(--ease-out),
    box-shadow var(--transition-base) var(--ease-out),
    border-color var(--transition-base) var(--ease-out);
}

.spot-card:hover,
.food-card:hover,
.food-grid-item:hover,
.hotel-card:hover,
.knowledge-card:hover,
.timeline-card:hover,
.alt-card:hover,
.rating-item:hover,
.compare-card:hover,
.compare-select-item:hover,
.tip-card:hover,
.interact-card:hover,
.safety-card:hover {
  transform: translateY(-2px);
}

.spot-card:active,
.food-card:active,
.food-grid-item:active,
.hotel-card:active,
.knowledge-card:active,
.timeline-card:active,
.alt-card:active {
  transform: translateY(0) scale(0.995);
  transition-duration: 100ms;
}

/* ========== 表单元素微交互 ========== */
input,
select,
textarea {
  transition: 
    border-color var(--transition-fast) var(--ease-out),
    box-shadow var(--transition-fast) var(--ease-out),
    background-color var(--transition-fast) var(--ease-out);
}

input:focus,
select:focus,
textarea:focus {
  box-shadow: 0 0 0 3px rgba37, 99, 235, 0.2;
}

[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus {
  box-shadow: 0 0 0 3px rgba96, 165, 250, 0.2;
}

/* 输入验证反馈 */
input:invalid:not(:placeholder-shown),
textarea:invalid:not(:placeholder-shown),
select:invalid:not(:placeholder-shown) {
  border-color: #ef4444;
}

[data-theme="dark"] input:invalid:not(:placeholder-shown),
[data-theme="dark"] textarea:invalid:not(:placeholder-shown),
[data-theme="dark"] select:invalid:not(:placeholder-shown) {
  border-color: #f87171;
}

input:valid:not(:placeholder-shown),
textarea:valid:not(:placeholder-shown) {
  border-color: #22c55e;
}

[data-theme="dark"] input:valid:not(:placeholder-shown),
[data-theme="dark"] textarea:valid:not(:placeholder-shown) {
  border-color: #4ade80;
}

/* ========== 加载状态 ========== */
.loading,
.btn.loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.loading::after,
.btn.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1.25em;
  height: 1.25em;
  margin: -0.625em 0 0 -0.625em;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin var(--transition-slow) linear infinite;
  opacity: 0.75;
}

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

/* 骨架屏闪烁动画 */
.skeleton,
.skeleton-text,
.skeleton-image,
.skeleton-avatar,
.skeleton-button {
  background: linear-gradient(
    90deg,
    var(--bg-secondary) 25%,
    var(--hover-bg) 50%,
    var(--bg-secondary) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

[data-theme="dark"] .skeleton,
[data-theme="dark"] .skeleton-text,
[data-theme="dark"] .skeleton-image,
[data-theme="dark"] .skeleton-avatar,
[data-theme="dark"] .skeleton-button {
  background: linear-gradient(
    90deg,
    var(--bg-secondary) 25%,
    var(--hover-bg) 50%,
    var(--bg-secondary) 75%
  );
  background-size: 200% 100%;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ========== 通知/Toast 反馈 ========== */
.toast,
.notification,
.alert {
  animation: slide-in var(--transition-base) var(--ease-out);
}

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

.toast.removing,
.notification.removing,
.alert.removing {
  animation: slide-out var(--transition-base) var(--ease-in-out) forwards;
}

@keyframes slide-out {
  to {
    opacity: 0;
    transform: translateY(-10px);
  }
}

/* ========== 进度条动画 ========== */
.progress-bar,
.rating-bar-fill,
.compare-bar-fill,
.quiz-progress-fill {
  transition: width var(--transition-slow) var(--ease-out);
}

/* ========== 模态框/弹窗动画 ========== */
.modal-overlay,
.fav-modal-overlay {
  animation: fade-in var(--transition-base) var(--ease-out);
}

.modal,
.fav-modal {
  animation: scale-in var(--transition-base) var(--ease-bounce);
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ========== 下拉菜单动画 ========== */
.navbar-dests,
.navbar-links.active,
.dropdown-menu,
.compare-select-dropdown {
  animation: dropdown-in var(--transition-fast) var(--ease-out);
}

@keyframes dropdown-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== 标签页/切换器动画 ========== */
.tab-panel,
.tab-content {
  animation: fade-in var(--transition-fast) var(--ease-out);
}

/* ========== 图片加载动画 ========== */
img {
  transition: opacity var(--transition-base) var(--ease-out);
}

img[loading="lazy"] {
  opacity: 0;
}

img[loading="lazy"].loaded {
  opacity: 1;
}

/* ========== 列表项目进入动画 ========== */
.timeline-item,
.day-section > *,
.food-grid-item,
.hotel-card,
.alt-card {
  animation: stagger-in var(--transition-slow) var(--ease-out) both;
}

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

/* 交错延迟 */
.timeline-item:nth-child(1) { animation-delay: 0ms; }
.timeline-item:nth-child(2) { animation-delay: 50ms; }
.timeline-item:nth-child(3) { animation-delay: 100ms; }
.timeline-item:nth-child(4) { animation-delay: 150ms; }
.timeline-item:nth-child(5) { animation-delay: 200ms; }
.timeline-item:nth-child(6) { animation-delay: 250ms; }
.timeline-item:nth-child(7) { animation-delay: 300ms; }
.timeline-item:nth-child(8) { animation-delay: 350ms; }
.timeline-item:nth-child(9) { animation-delay: 400ms; }
.timeline-item:nth-child(10) { animation-delay: 450ms; }

/* ========== 滚动指示器 ========== */
.back-to-top {
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base) var(--ease-out);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ========== 打印预览过渡 ========== */
@media print {
  * {
    animation: none !important;
    transition: none !important;
  }
}

/* ========== 减少动画偏好 ========== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .skeleton,
  .skeleton-text,
  .skeleton-image,
  .skeleton-avatar,
  .skeleton-button {
    animation: none;
    background: var(--bg-secondary);
  }
}

/* ========== 工具提示动画 ========== */
.tooltip,
.trend-tooltip,
.compare-bar-tooltip {
  animation: tooltip-in var(--transition-fast) var(--ease-out);
}

@keyframes tooltip-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ========== 徽章/计数器动画 ========== */
.badge,
.count-badge,
.notification-badge {
  transition: transform var(--transition-fast) var(--ease-bounce);
}

.badge:not(:empty),
.count-badge:not(:empty),
.notification-badge:not(:empty) {
  animation: badge-pop var(--transition-base) var(--ease-bounce);
}

@keyframes badge-pop {
  0% { transform: scale(0); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

/* ========== 切换开关动画 ========== */
.toggle-switch,
.switch-input {
  transition: background-color var(--transition-base) var(--ease-out);
}

.toggle-switch::after,
.switch-thumb {
  transition: transform var(--transition-base) var(--ease-bounce);
}

/* ========== 选择器选中动画 ========== */
.compare-select-item.selected {
  animation: select-pulse var(--transition-base) var(--ease-bounce);
}

@keyframes select-pulse {
  0% { box-shadow: 0 0 0 0 var(--item-color, var(--color-primary)); }
  70% { box-shadow: 0 0 0 6px rgba(var(--item-color-rgb, 37, 99, 235), 0); }
  100% { box-shadow: 0 0 0 0 rgba(var(--item-color-rgb, 37, 99, 235), 0); }
}

/* ========== 星级评分交互 ========== */
.rating-stars input[type="radio"] + label {
  transition: transform var(--transition-fast) var(--ease-out), color var(--transition-fast);
}

.rating-stars input[type="radio"]:hover + label,
.rating-stars input[type="radio"]:focus + label {
  transform: scale(1.1);
}

.rating-stars input[type="radio"]:checked + label {
  animation: star-pop var(--transition-fast) var(--ease-bounce);
}

@keyframes star-pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* ========== 页脚链接微交互 ========== */
.footer-links a {
  transition: 
    background-color var(--transition-fast) var(--ease-out),
    color var(--transition-fast) var(--ease-out),
    transform var(--transition-fast) var(--ease-out);
}

.footer-links a:hover {
  transform: translateX(4px);
}

/* ========== 英雄区装饰元素 ========== */
.hero-decor {
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(2deg); }
}