/* ========================================
   动画特效样式
   进场动画 · 悬停效果 · 3D变换 · 关键帧
   ======================================== */

/* ---------- 元素进场动画(初始隐藏) ---------- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.reveal[data-delay="0"] { transition-delay: 0s; }
.reveal[data-delay="100"] { transition-delay: 0.1s; }
.reveal[data-delay="150"] { transition-delay: 0.15s; }
.reveal[data-delay="200"] { transition-delay: 0.2s; }
.reveal[data-delay="300"] { transition-delay: 0.3s; }
.reveal[data-delay="400"] { transition-delay: 0.4s; }
.reveal[data-delay="450"] { transition-delay: 0.45s; }
.reveal[data-delay="500"] { transition-delay: 0.5s; }
.reveal[data-delay="700"] { transition-delay: 0.7s; }

/* 首屏特殊进场 */
.section-about .hero .reveal {
    opacity: 1;
    transform: none;
}

.section-about .hero .hero-eyebrow {
    animation: fadeInDown 0.8s ease 0.2s both;
}

.section-about .hero .hero-title {
    animation: titleInflate 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) 0.4s both;
}

.section-about .hero .hero-slogan {
    animation: fadeInUp 0.8s ease 0.6s both;
}

.section-about .hero .hero-intro {
    animation: fadeInUp 0.8s ease 0.8s both;
}

.section-about .hero .job-intent {
    animation: fadeInUp 0.8s ease 1s both;
}

.section-about .hero .hero-avatar {
    animation: scaleIn 1s cubic-bezier(0.34, 1.56, 0.64, 1) 0.5s both;
}

/* ---------- 关键帧动画 ---------- */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes titleInflate {
    0% {
        opacity: 0;
        transform: scale(0.6);
        letter-spacing: -10px;
    }
    60% {
        opacity: 1;
        transform: scale(1.05);
        letter-spacing: 2px;
    }
    100% {
        opacity: 1;
        transform: scale(1);
        letter-spacing: -1px;
    }
}

@keyframes floatRotate {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

@keyframes floatY {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

@keyframes floatX {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(15px);
    }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-3deg); }
    75% { transform: rotate(3deg); }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ---------- 导航栏滚动状态 ---------- */
.navbar.scrolled {
    background: rgba(0, 0, 0, 0.95);
}

/* ---------- 作品卡片倾斜效果 ---------- */
.project-card {
    transform-style: preserve-3d;
    will-change: transform;
}

.project-card:hover {
    transform: translateY(-8px) perspective(800px) rotateX(2deg) rotateY(-2deg);
}

/* ---------- 时间线卡片进场 ---------- */
.timeline-item.revealed:nth-child(odd) .timeline-card {
    animation: slideInLeft 0.8s ease both;
}

.timeline-item.revealed:nth-child(even) .timeline-card {
    animation: slideInRight 0.8s ease both;
}

/* ---------- 技能条动画 ---------- */
.skill-item.revealed .skill-fill {
    width: var(--target-width);
}

/* ---------- 兴趣卡片悬停增强 ---------- */
.life-card:hover .life-card-front {
    box-shadow: 0 0 0 1px var(--color-pink), 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* ---------- 滚动进度条 ---------- */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--color-pink);
    z-index: 1001;
    width: 0;
    transition: width 0.1s ease;
}

/* ---------- 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;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}