:root {
    --tianyi-blue: #66CCFF;
    --white: #FFFFFF;
    --bg-gradient-start: #E6F7FF;
    --bg-gradient-end: #FFFFFF;
    --text-main: #333333;
    --text-light: #666666;
    --accent-yellow: #FFE153;
    --accent-pink: #FFB7C5;

    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.8);
    --glass-shadow: 0 8px 32px rgba(102, 204, 255, 0.15);

    --font-main: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    --font-header: 'M PLUS Rounded 1c', 'Segoe UI', sans-serif;
    --font-mono: 'Consolas', monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-main);
    font-family: var(--font-main);
    overflow-x: hidden;
    line-height: 1.8; /* 优化：增加行高，提升可读性 */
    min-height: 100vh;
    letter-spacing: 0.3px; /* 优化：轻微字间距，更精致 */
}

/* === NEW: Starfield Background === */
.starfield {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -4;
    overflow: hidden;
    pointer-events: none;
}

.stars {
    position: absolute;
    width: 200%;
    height: 200%;
    background: transparent;
}

.stars:nth-child(1) {
    background-image:
        radial-gradient(2px 2px at 20% 30%, white, transparent),
        radial-gradient(2px 2px at 60% 70%, #66CCFF, transparent),
        radial-gradient(1px 1px at 50% 50%, white, transparent),
        radial-gradient(1px 1px at 80% 10%, #FFB7C5, transparent),
        radial-gradient(2px 2px at 90% 60%, white, transparent);
    background-size: 200px 200px, 300px 300px, 150px 150px, 250px 250px, 180px 180px;
    animation: twinkle 3s infinite ease-in-out;
}

.stars:nth-child(2) {
    background-image:
        radial-gradient(1px 1px at 10% 20%, white, transparent),
        radial-gradient(1px 1px at 70% 80%, #66CCFF, transparent),
        radial-gradient(1px 1px at 40% 60%, white, transparent);
    background-size: 220px 220px, 280px 280px, 190px 190px;
    animation: twinkle 4s infinite ease-in-out 1s;
}

.stars:nth-child(3) {
    background-image:
        radial-gradient(1px 1px at 30% 40%, #FFE153, transparent),
        radial-gradient(2px 2px at 65% 25%, white, transparent),
        radial-gradient(1px 1px at 85% 75%, #66CCFF, transparent);
    background-size: 260px 260px, 200px 200px, 240px 240px;
    animation: twinkle 5s infinite ease-in-out 2s;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* === NEW: Meteor Canvas === */
#meteor-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -3;
    pointer-events: none;
}

/* === NEW: Mouse Trail Canvas === */
#trail-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9998;
    pointer-events: none;
}

/* Particle Rain Canvas */
#background-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-gradient-start);
}
::-webkit-scrollbar-thumb {
    background: var(--tianyi-blue);
    border-radius: 4px;
}

/* Layout */
.container {
    max-width: 1200px; /* 优化：从1100px增加到1200px，更宽敞 */
    margin: 0 auto;
    padding: 0 32px; /* 优化：从20px增加到32px，两侧更多呼吸空间 */
}

section {
    padding: 100px 0; /* 优化：从80px增加到100px，区块间距更大 */
    opacity: 0;
    /* 移除translateY晃动 */
    transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

section.visible {
    opacity: 1;
    /* 移除transform，不再晃动 */
}

/* === NEW: 3D Flip Transition - 优化版本 === */
section.flip-enter {
    transform-style: preserve-3d;
    perspective: 2000px;
}

@media (min-width: 769px) {
    /* 保留3D翻转效果，但去掉translateY晃动 */
    section#about:not(.visible) {
        transform: rotateY(-90deg);
    }

    section#skills:not(.visible) {
        transform: rotateX(90deg);
    }

    section#social:not(.visible) {
        transform: rotateY(90deg);
    }

    section#friends:not(.visible) {
        transform: rotateX(-90deg);
    }
}

/* Titles */
h2.section-title {
    font-family: var(--font-header);
    font-size: 2.5rem; /* 优化：从2.2rem增加到2.5rem */
    text-align: center;
    margin-bottom: 60px; /* 优化：从50px增加到60px */
    color: var(--tianyi-blue);
    position: relative;
    font-weight: 700;
    letter-spacing: 1px; /* 优化：增加字间距 */
}

h2.section-title::after {
    content: '';
    display: block;
    width: 80px; /* 优化：从60px增加到80px */
    height: 5px; /* 优化：从4px增加到5px */
    background: linear-gradient(90deg, var(--accent-yellow), var(--accent-pink)); /* 优化：渐变色装饰线 */
    margin: 20px auto 0; /* 优化：从15px增加到20px */
    border-radius: 3px;
}

/* Glass Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-top: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 24px; /* 优化：从20px增加到24px，更圆润 */
    padding: 48px; /* 优化：从40px增加到48px，内容更舒展 */
    box-shadow: var(--glass-shadow), inset 0 0 20px rgba(255, 255, 255, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-float:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(102, 204, 255, 0.3), inset 0 0 20px rgba(255, 255, 255, 0.8);
}

/* 禁用 skills-card-wrapper 的 hover 效果 */
.skills-card-wrapper.hover-float:hover,
.skills-card-wrapper:hover {
    transform: none !important;
    box-shadow: var(--glass-shadow), inset 0 0 20px rgba(255, 255, 255, 0.5);
}

/* Header */
header {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
}

/* === NEW: Particle Title Canvas === */
.particle-title-canvas {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 200px;
    z-index: 10;
    pointer-events: none; /* 禁止鼠标交互 */
}

.main-title {
    font-family: var(--font-header);
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--tianyi-blue);
    margin-bottom: 20px;
    letter-spacing: 2px;
    /* Hidden by default, particle version will show */
}

@keyframes shine {
    to { background-position: 200% center; }
}

.slogan-text {
    font-size: 1.5rem;
    color: var(--text-light);
    font-weight: 300;
    min-height: 1.5em;
}

.scroll-down {
    position: absolute;
    bottom: 50px;
    /* 移除跳动动画 */
    /* animation: bounce 2s infinite; */
    animation: gentle-fade 3s ease-in-out infinite;
}
.scroll-down i {
    color: var(--tianyi-blue);
    font-size: 28px;
    filter: drop-shadow(0 0 5px rgba(102, 204, 255, 0.5));
}

/* 改为温和的淡入淡出 */
@keyframes gentle-fade {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* About Section */
.about-content {
    display: flex;
    align-items: center;
    gap: 64px; /* 优化：从50px增加到64px */
}

.avatar-wrapper {
    flex-shrink: 0;
}

.avatar {
    width: 220px; /* 优化：从200px增加到220px */
    height: 220px;
    border-radius: 50%;
    border: 6px solid rgba(255, 255, 255, 0.9); /* 优化：边框从5px增加到6px，更醒目 */
    box-shadow: 0 15px 40px rgba(102, 204, 255, 0.4); /* 优化：阴影加强 */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    object-fit: cover;
}
.avatar:hover {
    /* 优化：只放大，不旋转，避免眩晕 */
    transform: scale(1.08); /* 优化：从1.05增加到1.08 */
    box-shadow: 0 20px 50px rgba(102, 204, 255, 0.6);
}

.intro-text h2.section-header {
    font-family: var(--font-header);
    font-size: 2.2rem; /* 优化：从2rem增加到2.2rem */
    color: var(--tianyi-blue);
    margin-bottom: 24px; /* 优化：从20px增加到24px */
    letter-spacing: 0.5px;
}

.profile-desc p {
    margin-bottom: 16px; /* 优化：从12px增加到16px */
    font-size: 1.15rem; /* 优化：从1.1rem增加到1.15rem */
    color: var(--text-main);
    line-height: 1.9; /* 优化：增加行高 */
}
.profile-desc strong {
    color: var(--tianyi-blue);
    font-weight: 600;
}

/* Skills Spectrum */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); /* 优化：从320px增加到340px */
    gap: 36px; /* 优化：从30px增加到36px */
    /* 完全禁用任何可能的动画 */
    transform: none !important;
    transition: none !important;
}

.skill-item {
    margin-bottom: 0; /* 优化：移除margin，使用grid gap */
    /* 完全移除淡入动画，直接显示 */
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
    padding: 8px 0; /* 优化：增加上下内边距 */
}

/* Staggered delay for skills - 已禁用 */
/* .skill-item:nth-child(1) { transition-delay: 0.1s; }
.skill-item:nth-child(2) { transition-delay: 0.2s; }
.skill-item:nth-child(3) { transition-delay: 0.3s; }
.skill-item:nth-child(4) { transition-delay: 0.4s; }
.skill-item:nth-child(5) { transition-delay: 0.5s; }
.skill-item:nth-child(6) { transition-delay: 0.6s; } */

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px; /* 优化：从8px增加到12px */
    font-weight: 500;
    color: var(--text-main);
    font-size: 1.05rem; /* 优化：增加字体大小 */
}
.skill-percent {
    color: var(--tianyi-blue);
    font-weight: 700;
    font-size: 1.1rem; /* 优化：百分比更醒目 */
}

.spectrum-bar {
    width: 100%;
    height: 12px; /* 优化：从10px增加到12px，进度条更粗 */
    background: rgba(102, 204, 255, 0.1);
    border-radius: 6px; /* 优化：圆角相应增加 */
    overflow: hidden;
    position: relative;
}

/* 背景流动效果 */
.spectrum-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        rgba(102, 204, 255, 0.05) 0%,
        rgba(102, 204, 255, 0.15) 50%,
        rgba(102, 204, 255, 0.05) 100%);
    background-size: 200% 100%;
    animation: bg-flow 3s linear infinite;
    border-radius: 5px;
}

@keyframes bg-flow {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}

.spectrum-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--tianyi-blue), var(--accent-pink));
    border-radius: 5px;
    position: relative;
    box-shadow: 0 0 10px rgba(102, 204, 255, 0.4);
    /* 滚动进入时从0展开到目标宽度 */
    width: 0;
    transition: width 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
}

section.visible .spectrum-fill {
    /* JS会设置目标宽度 */
}

/* 渐变光泽扫过效果 */
.spectrum-fill::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%);
    background-size: 200% 100%;
    animation: shine-sweep 3s ease-in-out infinite;
    border-radius: 5px;
}

@keyframes shine-sweep {
    0% { background-position: -200% 0%; }
    50% { background-position: 200% 0%; }
    100% { background-position: 200% 0%; }
}

/* 脉冲光晕效果 */
.spectrum-fill::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    bottom: -2px;
    width: 20px;
    background: radial-gradient(ellipse at center,
        rgba(255, 183, 197, 0.8) 0%,
        rgba(255, 183, 197, 0.4) 50%,
        transparent 100%);
    filter: blur(4px);
    animation: pulse-glow 2s ease-in-out infinite;
    border-radius: 50%;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Shimmer effect - 已禁用，避免晃动 */
/* .spectrum-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transform: translateX(-100%);
    animation: shimmer 2.5s infinite;
}

@keyframes shimmer {
    100% { transform: translateX(100%); }
} */

.skill-desc {
    display: block;
    margin-top: 10px; /* 优化：从8px增加到10px */
    font-size: 0.9rem; /* 优化：从0.85rem增加到0.9rem */
    color: var(--text-light);
    font-style: italic;
    font-family: var(--font-main);
    line-height: 1.6;
}
.skill-item:hover .skill-desc {
    color: var(--tianyi-blue);
    transition: color 0.3s;
    /* 移除 translateX，避免晃动 */
}

/* Social & Friends Grid */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); /* 优化：从240px增加到260px */
    gap: 28px; /* 优化：从25px增加到28px */
}

.social-card, .friend-card {
    opacity: 0;
    /* 移除translateY晃动 */
    transition: opacity 0.5s ease;
}

section.visible .social-card,
section.visible .friend-card {
    opacity: 1;
    /* 移除transform，不再晃动 */
}

/* Staggered delay for grid items */
.grid-container > *:nth-child(1) { transition-delay: 0.1s; }
.grid-container > *:nth-child(2) { transition-delay: 0.2s; }
.grid-container > *:nth-child(3) { transition-delay: 0.3s; }
.grid-container > *:nth-child(4) { transition-delay: 0.4s; }

.social-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.5);
    position: relative;
    overflow: hidden;
    min-height: 160px; /* 优化：增加最小高度，更统一 */
    padding: 32px 24px; /* 优化：增加内边距 */
}

/* Add glow effect on hover */
.social-card::before, .friend-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 204, 255, 0.1) 0%, transparent 70%);
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.5s ease;
    z-index: -1;
}

.social-card:hover::before, .friend-card:hover::before {
    opacity: 1;
    transform: scale(1);
}

.social-card i {
    font-size: 3.2rem; /* 优化：从3rem增加到3.2rem */
    margin-bottom: 16px; /* 优化：从15px增加到16px */
    color: var(--tianyi-blue);
    transition: transform 0.3s ease, color 0.3s ease, filter 0.3s ease;
}

.social-card:hover i {
    /* 优化：只放大，不旋转 */
    transform: scale(1.2); /* 优化：从1.15增加到1.2 */
    color: var(--accent-pink);
    filter: drop-shadow(0 0 10px rgba(255, 183, 197, 0.7)); /* 优化：增强光晕 */
}

.social-card span {
    font-size: 1.05rem; /* 优化：增加字体大小 */
    font-weight: 500;
}

.friend-card {
    display: flex;
    align-items: center;
    gap: 20px; /* 优化：从15px增加到20px */
    text-decoration: none;
    color: var(--text-main);
    padding: 24px; /* 优化：从20px增加到24px */
}

.friend-avatar {
    width: 70px; /* 优化：从60px增加到70px */
    height: 70px;
    border-radius: 50%;
    border: 3px solid var(--tianyi-blue); /* 优化：从2px增加到3px */
    flex-shrink: 0;
}

.friend-info h5 {
    font-size: 1.15rem; /* 优化：从1.1rem增加到1.15rem */
    margin-bottom: 6px; /* 优化：从4px增加到6px */
    color: var(--tianyi-blue);
    font-weight: 600;
}
.friend-info p {
    font-size: 0.9rem; /* 优化：从0.85rem增加到0.9rem */
    color: var(--text-light);
    line-height: 1.5;
}

/* Footer */
footer {
    margin-top: 80px; /* 优化：从60px增加到80px */
    padding: 80px 0; /* 优化：从60px增加到80px */
    text-align: center;
    background: linear-gradient(to top, #E6F7FF, transparent);
    color: var(--text-light);
}

footer h3 {
    font-family: var(--font-header);
    color: var(--tianyi-blue);
    margin-bottom: 12px; /* 优化：从10px增加到12px */
    font-size: 1.6rem; /* 优化：从1.5rem增加到1.6rem */
}

footer p {
    margin: 8px 0; /* 优化：增加行间距 */
    font-size: 0.95rem;
}

footer a {
    color: var(--text-main);
    text-decoration: none;
    transition: color 0.3s;
}
footer a:hover {
    color: var(--tianyi-blue);
}

/* Click Ripple Effect */
.click-ripple {
    position: absolute;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: radial-gradient(circle, var(--tianyi-blue), transparent);
    opacity: 0.8;
    pointer-events: none;
    animation: ripple-anim 0.8s ease-out forwards;
    z-index: 9999;
}

@keyframes ripple-anim {
    0% { width: 10px; height: 10px; opacity: 0.8; box-shadow: 0 0 0 0 rgba(102, 204, 255, 0.5); }
    100% { width: 150px; height: 150px; opacity: 0; box-shadow: 0 0 0 20px rgba(102, 204, 255, 0); }
}

/* Animations - 优化，移除晃动 */
@keyframes float {
    /* 移除浮动动画，保留定义以免报错 */
    0%, 100% { transform: translateY(0px); }
}

@keyframes bounce {
    /* 移除跳动动画，保留定义以免报错 */
    0%, 100% { transform: translateY(0); }
}

@keyframes pulse-width {
    0% { filter: brightness(1); }
    100% { filter: brightness(1.1); }
}

/* Enhanced Visuals */
.glass-card {
    /* Keep existing glass styles */
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.4)); /* Gradient glass */
}

/* === NEW: Magic Circle Decorations === */
.avatar-wrapper {
    position: relative;
    display: inline-block;
}

.magic-circle {
    position: absolute;
    width: 250px;
    height: 250px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.magic-circle-back {
    z-index: -1;
    animation: rotate-magic-circle 20s linear infinite;
}

.magic-circle-front {
    z-index: 1;
    animation: rotate-magic-circle 15s linear infinite reverse;
}

@keyframes rotate-magic-circle {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Magic Circle for Skills Section */
.skills-card-wrapper {
    position: relative;
    /* 禁用glass-card的hover效果，避免晃动 */
    transform: none !important;
}

.magic-circle-skills {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    animation: rotate-magic-circle 30s linear infinite;
    opacity: 0.6;
}

/* === NEW: Enhanced Music Widget with Spectrum === */
.music-widget {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 20px rgba(102, 204, 255, 0.4);
    z-index: 1000;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: visible;
}

.music-widget:hover {
    width: 240px;
    border-radius: 30px;
    padding: 0 20px;
    justify-content: space-between;
}

.music-icon {
    font-size: 22px;
    color: var(--tianyi-blue);
    min-width: 30px;
    text-align: center;
    animation: pulse-music 2s infinite;
}

.music-text {
    white-space: nowrap;
    opacity: 0;
    font-size: 0.85rem;
    color: var(--text-main);
    transition: opacity 0.3s ease 0.1s;
    margin-right: 10px;
}

.music-widget:hover .music-text {
    opacity: 1;
}

/* Audio Spectrum Bars */
.spectrum-container {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 30px;
    opacity: 0;
    transition: opacity 0.3s ease 0.2s;
}

.music-widget:hover .spectrum-container {
    opacity: 1;
}

/* 音乐组件的频谱柱 - 重命名避免冲突 */
.spectrum-container .spectrum-bar {
    width: 4px;
    background: linear-gradient(to top, var(--tianyi-blue), var(--accent-pink));
    border-radius: 2px;
    height: 10px;
    animation: spectrum-jump 0.8s ease-in-out infinite;
    animation-delay: var(--delay, 0s);
}

@keyframes spectrum-jump {
    /* 优化：减小跳动幅度 */
    0%, 100% { height: 12px; }
    50% { height: 20px; }
}

@keyframes pulse-music {
    /* 优化：减小脉冲幅度，更温和 */
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* Mobile Tweaks for widget */
@media (max-width: 768px) {
    .music-widget {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
    .music-widget:hover {
        width: 50px; /* Disable expand on mobile */
    }
    .spectrum-container {
        display: none; /* Hide spectrum on mobile */
    }

    /* Disable trail canvas on mobile */
    #trail-canvas {
        display: none;
    }

    /* Simplify particle title on mobile */
    .particle-title-canvas {
        width: 90%;
        max-width: 400px;
        height: 120px;
    }
}

@media (max-width: 768px) {
    .main-title {
        font-size: 2.8rem;
        letter-spacing: 0;
    }

    .slogan-text {
        font-size: 1.1rem;
        padding: 0 10px;
    }

    .container {
        padding: 0 20px; /* 移动端保持较小间距 */
    }

    section {
        padding: 60px 0; /* 移动端缩小区块间距 */
    }

    h2.section-title {
        font-size: 2rem; /* 移动端缩小标题 */
        margin-bottom: 40px;
    }

    .glass-card {
        padding: 28px 20px; /* 移动端缩小内边距 */
        border-radius: 16px;
    }

    /* About Section Mobile */
    .about-content {
        flex-direction: column;
        text-align: center;
        gap: 32px;
    }

    .avatar {
        width: 180px; /* 移动端缩小头像 */
        height: 180px;
    }

    .intro-text h2.section-header {
        font-size: 1.8rem;
        text-align: center;
    }

    .profile-desc p {
        font-size: 1.05rem;
        text-align: left;
    }

    /* Grid Adjustments */
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .grid-container {
        grid-template-columns: repeat(auto-fill, minmax(100%, 1fr));
        gap: 20px;
    }

    /* Footer */
    footer {
        padding: 50px 0;
        margin-top: 60px;
    }

    /* Disable some heavy animations on mobile */
    .orb {
        opacity: 0.4;
        filter: blur(60px);
    }

    /* Hover effects might stick on mobile, so we tone them down or rely on active state */
    .hover-float:active {
        transform: scale(0.98);
    }
}

/* 3D Tilt Effect Utilities */
.js-tilt-container {
    perspective: 1000px;
    transform-style: preserve-3d;
}

.js-tilt-element {
    transition: transform 0.1s ease-out; /* Fast transition for mouse movement */
}