/* ========================================
   动画效果库 - Animations
   ======================================== */

/* 淡入效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* 淡出效果 */
@keyframes fadeOut {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
    }
}

/* 从下向上滑入 */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 从上向下滑入 */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 缩放弹出 */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 缩放消失 */
@keyframes scaleOut {
    from {
        opacity: 1;
        transform: scale(1);
    }

    to {
        opacity: 0;
        transform: scale(0.9);
    }
}

/* 模态框背景淡入 */
@keyframes modalBackdropFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* 模态框内容滑入 */
@keyframes modalContentSlide {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 抖动效果（错误提示） */
@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-10px);
    }

    20%,
    40%,
    60%,
    80% {
        transform: translateX(10px);
    }
}

/* 弹跳效果 */
@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-20px);
    }

    60% {
        transform: translateY(-10px);
    }
}

/* 脉冲效果 */
@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 旋转加载 */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* 光泽扫过效果 */
@keyframes shimmer {
    0% {
        background-position: -100% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

/* 呼吸灯效果 */
@keyframes breathing {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* 成功提示动画 */
@keyframes successPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(40, 167, 69, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
    }
}

/* 失败提示动画 */
@keyframes errorPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(220, 53, 69, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(220, 53, 69, 0);
    }
}

/* 渐变背景流动 */
@keyframes gradientFlow {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* ========================================
   工具类动画
   ======================================== */

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

.animate-fade-out {
    animation: fadeOut 0.5s ease-out;
}

.animate-slide-up {
    animation: slideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-slide-down {
    animation: slideDown 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-scale-in {
    animation: scaleIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-shake {
    animation: shake 0.5s ease-in-out;
}

.animate-bounce {
    animation: bounce 1s ease-in-out;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ========================================
   过渡效果
   ======================================== */

.transition-all {
    transition: all var(--transition-base);
}

.transition-fast {
    transition: all var(--transition-fast);
}

.transition-slow {
    transition: all var(--transition-slow);
}

/* ========================================
   加载状态骨架屏
   ======================================== */

.skeleton {
    background: linear-gradient(90deg,
            #f0f0f0 25%,
            #e0e0e0 50%,
            #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-title {
    height: 2em;
    width: 60%;
    margin-bottom: 1em;
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

/* ========================================
   特殊效果
   ======================================== */

/* 磁吸效果（鼠标跟随） */
.magnetic {
    transition: transform var(--transition-fast);
}

/* 按钮按压效果 */
button:active:not(:disabled),
.btn-press:active {
    transform: scale(0.98);
}

/* 悬浮上升效果 */
.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

/* 阴影渐变效果 */
.shadow-hover {
    transition: box-shadow var(--transition-base);
}

.shadow-hover:hover {
    box-shadow: var(--shadow-xl);
}

/* 玻璃态淡入 */
@keyframes glassFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0);
    }

    to {
        opacity: 1;
        backdrop-filter: blur(var(--glass-blur));
    }
}

.glass-fade-in {
    animation: glassFadeIn 0.5s ease-out;
}