/**
 * Star Photo Share System
 * Animations CSS - 动画效果库
 * Version 1.0
 * 2026-07-17
 *
 * 功能：所有关键帧动画、过渡效果、特效动画
 */

/* ========================================
   基础关键帧动画
   ======================================== */

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

/* 淡出 */
@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; transform: translateX(20px); }
}

/* 从下方滑入 */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 从右侧滑入 */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 从左侧滑入 */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 放大淡入 */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 缩小淡出 */
@keyframes scaleOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.9);
  }
}

/* 弹入 */
@keyframes bounceIn {
  0% { opacity: 0; transform: scale(0.3); }
  50% { opacity: 1; transform: scale(1.05); }
  70% { transform: scale(0.95); }
  100% { transform: scale(1); }
}

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

/* 脉冲 */
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

/* 摇晃 */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

/* 闪烁（加载骨架屏） */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* 浮动 */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ========================================
   星空动画
   ======================================== */

/* 星星闪烁 */
@keyframes twinkle {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

@keyframes twinkle2 {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  30% { opacity: 0.2; transform: scale(0.6); }
  70% { opacity: 0.9; transform: scale(1.3); }
}

@keyframes twinkle3 {
  0%, 100% { opacity: 0.6; transform: scale(0.9); }
  40% { opacity: 0.1; transform: scale(0.5); }
  80% { opacity: 1; transform: scale(1.4); }
}

/* 流星动画 */
@keyframes meteor {
  0% {
    transform: translateX(0) translateY(0) rotate(45deg);
    opacity: 1;
  }
  70% {
    opacity: 0.8;
  }
  100% {
    transform: translateX(-500px) translateY(500px) rotate(45deg);
    opacity: 0;
  }
}

/* 流星头部发光 */
@keyframes meteorGlow {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* 星云缓慢移动 */
@keyframes nebulaMove {
  0% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(-2%, 1%) scale(1.02); }
  50% { transform: translate(1%, -1%) scale(0.98); }
  75% { transform: translate(2%, 0.5%) scale(1.01); }
  100% { transform: translate(0, 0) scale(1); }
}

/* ========================================
   星球动画
   ======================================== */

/* 星球缓慢旋转 */
@keyframes planetRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 星球浮动 */
@keyframes planetFloat {
  0%, 100% { transform: translateY(0); }
  25% { transform: translateY(-8px); }
  75% { transform: translateY(4px); }
}

/* 星球光环旋转 */
@keyframes ringRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

/* 星球发光呼吸 */
@keyframes planetGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(37, 99, 235, 0.4); }
  50% { box-shadow: 0 0 50px rgba(124, 58, 237, 0.7); }
}

/* ========================================
   卡片动画
   ======================================== */

/* 卡片依次淡入 */
@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   按钮效果
   ======================================== */

/* 波纹扩散 */
@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ========================================
   进度条动画
   ======================================== */

/* 条纹流动 */
@keyframes progressStripe {
  0% { background-position: 1rem 0; }
  100% { background-position: 0 0; }
}

/* ========================================
   全屏模式动画
   ======================================== */

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

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

/* ========================================
   成功/失败图标动画
   ======================================== */

@keyframes checkmark {
  0% { stroke-dashoffset: 50; }
  100% { stroke-dashoffset: 0; }
}

@keyframes crossmark {
  0% { transform: scale(0); }
  100% { transform: scale(1); }
}

/* ========================================
   动画工具类
   ======================================== */

.animate-fadeIn { animation: fadeIn 0.3s ease; }
.animate-slideInUp { animation: slideInUp 0.4s ease; }
.animate-slideInRight { animation: slideInRight 0.3s ease; }
.animate-scaleIn { animation: scaleIn 0.3s ease; }
.animate-bounceIn { animation: bounceIn 0.5s ease; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-shake { animation: shake 0.5s ease; }

/* 延迟动画（卡片依次出现） */
.animate-stagger > * {
  opacity: 0;
  animation: cardFadeIn 0.5s ease forwards;
}

.animate-stagger > *:nth-child(1) { animation-delay: 0.05s; }
.animate-stagger > *:nth-child(2) { animation-delay: 0.1s; }
.animate-stagger > *:nth-child(3) { animation-delay: 0.15s; }
.animate-stagger > *:nth-child(4) { animation-delay: 0.2s; }
.animate-stagger > *:nth-child(5) { animation-delay: 0.25s; }
.animate-stagger > *:nth-child(6) { animation-delay: 0.3s; }
.animate-stagger > *:nth-child(7) { animation-delay: 0.35s; }
.animate-stagger > *:nth-child(8) { animation-delay: 0.4s; }
.animate-stagger > *:nth-child(9) { animation-delay: 0.45s; }
.animate-stagger > *:nth-child(10) { animation-delay: 0.5s; }
.animate-stagger > *:nth-child(n+11) { animation-delay: 0.55s; }