/* ============================================
   KONGDU AI 动画库
   基于 UnlimitAI 参考 + 项目适配
   ============================================ */

/* === CSS 变量 === */
:root {
    --anim-fast: 0.15s;
    --anim-normal: 0.3s;
    --anim-slow: 0.5s;
    --anim-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --anim-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --anim-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --anim-color: #26A4DB;
    --anim-color-glow: rgba(38, 164, 219, 0.4);
}

/* === 基础入场动画 === */

/* 淡入上移 */
.anim-fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--anim-normal) var(--anim-ease-out),
                transform var(--anim-normal) var(--anim-ease-out);
}
.anim-fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* 纯淡入 */
.anim-fade-in {
    opacity: 0;
    transition: opacity var(--anim-normal) ease;
}
.anim-fade-in.is-visible {
    opacity: 1;
}

/* 缩放弹入 */
.anim-scale-in {
    opacity: 0;
    transform: scale(0.92);
    transition: opacity var(--anim-normal) var(--anim-ease-out),
                transform var(--anim-normal) var(--anim-spring);
}
.anim-scale-in.is-visible {
    opacity: 1;
    transform: scale(1);
}

/* 右侧滑入 */
.anim-slide-right {
    transform: translateX(100%);
    transition: transform var(--anim-normal) var(--anim-ease-out);
}
.anim-slide-right.is-visible {
    transform: translateX(0);
}

/* 左侧滑入 */
.anim-slide-left {
    transform: translateX(-100%);
    transition: transform var(--anim-normal) var(--anim-ease-out);
}
.anim-slide-left.is-visible {
    transform: translateX(0);
}

/* 底部滑入 */
.anim-slide-up {
    transform: translateY(100%);
    transition: transform var(--anim-normal) var(--anim-ease-out);
}
.anim-slide-up.is-visible {
    transform: translateY(0);
}

/* 弹性弹入 (图片/重点元素) */
.anim-pop-in {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity var(--anim-slow) var(--anim-ease-out),
                transform var(--anim-slow) var(--anim-spring);
}
.anim-pop-in.is-visible {
    opacity: 1;
    transform: scale(1);
}

/* === 循环动画 === */

/* 流光扫过 */
.anim-shimmer {
    position: relative;
}
.anim-shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    animation: shimmerSlide 2s linear infinite;
}
@keyframes shimmerSlide {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 呼吸脉冲发光 */
.anim-breathe {
    animation: breatheGlow 2s ease-in-out infinite;
}
@keyframes breatheGlow {
    0%, 100% { box-shadow: 0 0 0 0 var(--anim-color-glow); }
    50% { box-shadow: 0 0 20px 8px var(--anim-color-glow); }
}

/* 轻微浮动 */
.anim-float {
    animation: floatY 3s ease-in-out infinite;
}
@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* 旋转加载 */
.anim-spin {
    animation: spinRotate 1s linear infinite;
}
@keyframes spinRotate {
    to { transform: rotate(360deg); }
}

/* 渐变流动 */
.anim-gradient-flow {
    background-size: 200% 200%;
    animation: gradientFlow 6s ease infinite;
}
@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 脉冲 */
.anim-pulse {
    animation: pulseSoft 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
@keyframes pulseSoft {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* === 微交互 === */

/* 按钮 hover 上浮 */
.btn-hover-lift {
    transition: transform var(--anim-fast) ease,
                box-shadow var(--anim-fast) ease;
}
.btn-hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 按钮 tap 缩小 */
.btn-active-scale {
    transition: transform 0.1s ease;
}
.btn-active-scale:active {
    transform: scale(0.97);
}

/* 卡片 hover 上浮 */
.card-hover-lift {
    transition: transform var(--anim-normal) var(--anim-ease-out),
                box-shadow var(--anim-normal) var(--anim-ease-out);
}
.card-hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* 图片 hover 缩放 */
.img-hover-zoom {
    overflow: hidden;
}
.img-hover-zoom img {
    transition: transform var(--anim-normal) var(--anim-ease-out);
}
.img-hover-zoom:hover img {
    transform: scale(1.03);
}

/* 输入框聚焦发光 */
.input-focus-glow {
    transition: box-shadow var(--anim-fast) ease;
}
.input-focus-glow:focus {
    box-shadow: 0 0 0 3px rgba(38, 164, 219, 0.2);
}

/* 发光滑块 */
.glow-slider::-webkit-slider-thumb {
    transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.glow-slider::-webkit-slider-thumb:hover {
    box-shadow: 0 0 0 4px var(--anim-color-glow), 0 0 16px 3px var(--anim-color-glow);
    transform: scale(1.1);
}

/* === Toast 通知 === */
.toast-enter {
    animation: toastIn 0.35s var(--anim-spring) forwards;
}
.toast-exit {
    animation: toastOut 0.25s ease forwards;
}
@keyframes toastIn {
    from { opacity: 0; transform: translateY(20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
    from { opacity: 1; transform: translateY(0) scale(1); }
    to { opacity: 0; transform: translateY(-10px) scale(0.95); }
}

/* === 下拉菜单弹性 === */
.dropdown-menu {
    animation: dropdownPop 0.2s var(--anim-spring);
    transform-origin: bottom left;
}
@keyframes dropdownPop {
    from { opacity: 0; transform: scale(0.92) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

/* === 交错入场延迟 === */
.stagger-1 { transition-delay: 0s; }
.stagger-2 { transition-delay: 0.06s; }
.stagger-3 { transition-delay: 0.12s; }
.stagger-4 { transition-delay: 0.18s; }
.stagger-5 { transition-delay: 0.24s; }
.stagger-6 { transition-delay: 0.30s; }
.stagger-7 { transition-delay: 0.36s; }
.stagger-8 { transition-delay: 0.42s; }

/* === 模态框动画增强 === */
.modal-backdrop {
    opacity: 0;
    transition: opacity var(--anim-normal) ease;
}
.modal-backdrop.is-visible {
    opacity: 1;
}
.modal-panel[data-anim] {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
    transition: opacity var(--anim-normal) var(--anim-ease-out),
                transform var(--anim-normal) var(--anim-spring);
}
.modal-panel[data-anim].is-visible {
    opacity: 1;
    transform: scale(1) translateY(0);
}

/* === 无障碍 === */
@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;
    }
}

/* === Liquid Glass Buttons (glassmorphism + premium) === */
.glass-btn {
    background: rgba(17,17,24,0.65);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    padding: 10px 24px;
    color: var(--t, #e8e8f0);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
    overflow: hidden;
}
.glass-btn:hover {
    border-color: rgba(38,164,219,0.4);
    box-shadow: 0 0 20px rgba(38,164,219,0.25);
    transform: translateY(-2px);
}
.glass-btn:active {
    transform: scale(0.96);
}
.glass-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
    transition: left 0.6s ease;
}
.glass-btn:hover::after {
    left: 100%;
}
.glass-btn.primary {
    background: linear-gradient(135deg, #26A4DB, #1a8bc4);
    border-color: rgba(38,164,219,0.5);
    color: #fff;
}
.glass-btn.primary:hover {
    box-shadow: 0 0 24px rgba(38,164,219,0.3), 0 4px 16px rgba(38,164,219,0.2);
}