/*============================================================
  畅畅博客 - 动画系统 animations.css
  性能: 全部GPU加速(transform/opacity)
  低配: .low-spec 类下自动禁用
============================================================*/

/* ===== 淡入上移 ===== */
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s ease forwards;
}
@keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 淡入缩放 ===== */
.fade-scale {
    opacity: 0;
    transform: scale(0.95);
    animation: fadeScale 0.5s ease forwards;
}
@keyframes fadeScale {
    to { opacity: 1; transform: scale(1); }
}

/* ===== 流光边框(悬停) ===== */
.glow-border {
    position: relative;
}
.glow-border::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: conic-gradient(from 0deg, transparent, var(--accent-1), var(--accent-2), var(--accent-3), transparent);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.5s ease;
}
.glow-border:hover::before {
    opacity: 1;
    animation: rotateGlow 3s linear infinite;
}
@keyframes rotateGlow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ===== 3D卡片倾斜 ===== */
.card-3d {
    transition: transform 0.3s ease;
    transform-style: preserve-3d;
    perspective: 1000px;
}

/* ===== 按钮脉冲 ===== */
.btn-pulse {
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(96,165,250,0.4); }
    50% { box-shadow: 0 0 0 12px rgba(96,165,250,0); }
}

/* ===== 图标浮动 ===== */
.float-anim {
    animation: float 3s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* ===== 打字机光标闪烁 ===== */
.cursor-blink {
    animation: cursorBlink 0.8s step-end infinite;
}
@keyframes cursorBlink {
    50% { opacity: 0; }
}

/* ===== 波纹扩散 ===== */
.ripple {
    position: relative;
    overflow: hidden;
}
.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transform: scale(0);
    animation: rippleAnim 0.6s ease-out forwards;
    pointer-events: none;
}
@keyframes rippleAnim {
    to { transform: scale(4); opacity: 0; }
}

/* ===== 渐入显示 ===== */
.fade-in {
    animation: fadeIn 0.4s ease;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== 旋转加载 ===== */
.spinner {
    width: 24px; height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-1);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== 滚动驱动动画 ===== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 页面切换动画 ===== */
.page-enter {
    animation: pageEnter 0.4s ease;
}
@keyframes pageEnter {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}