:root {
  --color-primary: #165DFF;
  --color-primary-light: #4080FF;
  --color-primary-dark: #0E42D2;
  --color-primary-glow: rgba(22, 93, 255, 0.3);
  --color-accent: #7C3AED;
  --color-accent-light: #A78BFA;

  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-tertiary: #F0F2F5;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F8F9FA;

  --text-primary: #1A1A2E;
  --text-secondary: #4A4A6A;
  --text-tertiary: #8A8AA0;

  --border-color: #E8E8EF;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 30px rgba(22, 93, 255, 0.15);

  --gradient-primary: linear-gradient(135deg, #165DFF, #7C3AED);

  --nav-bg: rgba(255, 255, 255, 0.8);
  --card-border: 1px solid var(--border-color);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --transition-fast: 200ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

[data-theme="dark"] {
  --bg-primary: #121212;
  --bg-secondary: #1A1A2E;
  --bg-tertiary: #232340;
  --bg-card: #1E1E32;
  --bg-card-hover: #2A2A44;

  --text-primary: #EEEEF0;
  --text-secondary: #A0A0B8;
  --text-tertiary: #6A6A82;

  --border-color: #2A2A44;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);

  --nav-bg: rgba(18, 18, 18, 0.85);
  --card-border: 1px solid var(--border-color);
}

@layer base {
  html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
  }

  body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  ::selection {
    background: var(--color-primary);
    color: white;
  }

  ::-webkit-scrollbar {
    width: 4px;
  }

  ::-webkit-scrollbar-track {
    background: var(--bg-secondary);
  }

  ::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 2px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
  }
}

@layer components {
  .container-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  .section-padding {
    padding: 100px 0;
  }

  .section-title {
    font-size: 2.8rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
    line-height: 1.7;
  }

  .glass-card {
    background: var(--bg-card);
    border: var(--card-border);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(12px);
    transition: all var(--transition-base);
  }

  .glass-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: var(--color-primary);
  }

  .gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    text-decoration: none;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
  }

  .btn-primary:active {
    transform: translateY(0);
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
    background: transparent;
  }

  .btn-outline:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
  }

  .tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(22, 93, 255, 0.1);
    color: var(--color-primary);
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all var(--transition-fast);
  }

  .tag:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.05);
  }

  .fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-in-out, transform 0.6s ease-in-out;
  }

  .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
  }

  .fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease-in-out, transform 0.6s ease-in-out;
  }

  .fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
  }

  .fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease-in-out, transform 0.6s ease-in-out;
  }

  .fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
  }

  .fade-in-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
  }

  .fade-in-scale.visible {
    opacity: 1;
    transform: scale(1);
  }
}

@layer utilities {
  .text-balance {
    text-wrap: balance;
  }

  .perspective-1000 {
    perspective: 1000px;
  }

  .backface-hidden {
    backface-visibility: hidden;
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 5px var(--color-primary-glow); }
  50% { box-shadow: 0 0 25px var(--color-primary-glow), 0 0 50px var(--color-primary-glow); }
}

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

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

@keyframes scroll-indicator {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(8px); opacity: 1; }
}

@keyframes typewriter-cursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes star-twinkle {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes orbit-rotate {
  from { transform: rotate(0deg) translateX(20px) rotate(0deg); }
  to { transform: rotate(360deg) translateX(20px) rotate(-360deg); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeOutDown {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(20px);
  }
}

@keyframes particle-float {
  0%, 100% { transform: translateY(0) translateX(0); }
  25% { transform: translateY(-20px) translateX(10px); }
  50% { transform: translateY(-10px) translateX(-10px); }
  75% { transform: translateY(-30px) translateX(5px); }
}

.animate-float { animation: float 6s ease-in-out infinite; }
.animate-pulse-glow { animation: pulse-glow 2s ease-in-out infinite; }
.animate-spin-slow { animation: spin-slow 8s linear infinite; }
.animate-shimmer { background-size: 200% 100%; animation: shimmer 3s ease-in-out infinite; }
.animate-scroll-indicator { animation: scroll-indicator 2s ease-in-out infinite; }
.animate-typewriter-cursor { animation: typewriter-cursor 1s step-end infinite; }
.animate-star-twinkle { animation: star-twinkle 3s ease-in-out infinite; }
.animate-gradient-shift { background-size: 200% 200%; animation: gradient-shift 6s ease infinite; }
.animate-orbit { animation: orbit-rotate 4s linear infinite; }

@layer components {
  .loading-screen {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    transition: opacity 0.6s ease-in-out, visibility 0.6s ease-in-out;
  }

  .loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .loading-screen__logo {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 32px;
    letter-spacing: 2px;
  }

  .loading-screen__bar {
    width: 240px;
    height: 3px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
  }

  .loading-screen__progress {
    height: 100%;
    width: 0%;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width 0.3s ease-in-out;
  }

  .scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 9999;
    background: transparent;
  }

  .scroll-progress__bar {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 50ms linear;
    border-radius: 2px;
  }

  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9000;
    padding: 16px 0;
    background: transparent;
    transition: all var(--transition-base);
  }

  .navbar.scrolled {
    background: var(--nav-bg-scrolled, var(--nav-bg));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 var(--border-color);
    padding: 12px 0;
  }

  .navbar.scrolled .navbar__link {
    color: var(--nav-text-scrolled, var(--text-secondary));
  }

  .navbar.scrolled .navbar__link:hover {
    color: var(--nav-text-scrolled, var(--text-primary));
    opacity: 0.8;
  }

  .navbar.scrolled .navbar__logo {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .navbar.scrolled .mobile-menu-btn span {
    background: var(--nav-text-scrolled, var(--text-primary));
  }

  .navbar.scrolled .theme-toggle {
    background: transparent;
    border-color: var(--nav-text-scrolled, var(--border-color));
    color: var(--nav-text-scrolled, var(--text-primary));
  }

  .navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  .navbar__logo {
    font-size: 1.35rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
  }

  .navbar__links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .navbar__link {
    color: var(--hero-text-primary, rgba(255, 255, 255, 0.85));
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
  }

  .navbar__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-fast);
    border-radius: 1px;
  }

  .navbar__link:hover {
    color: white;
  }

  .navbar__link:hover::after {
    width: 100%;
  }

  .theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--hero-text-tertiary, rgba(255, 255, 255, 0.25));
    background: rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(8px);
    color: var(--hero-text-primary, rgba(255, 255, 255, 0.85));
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.1rem;
  }

  .theme-toggle:hover {
    border-color: var(--hero-accent, var(--color-primary));
    background: rgba(22, 93, 255, 0.2);
  }

  .mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    background: none;
    border: none;
  }

  .mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--hero-text-primary, rgba(255, 255, 255, 0.9));
    border-radius: 2px;
    transition: all var(--transition-fast);
  }

  .mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .mouse-glow {
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    transform: translate(-50%, -50%);
  }

  .mouse-glow.visible {
    opacity: 1;
  }

  .hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #0a0a1a;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    cursor: pointer;
  }

  .hero__bg-canvas {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
  }

  .hero__gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.2;
    pointer-events: none;
    z-index: 2;
  }

  .hero__gradient-orb--1 {
    width: 400px;
    height: 400px;
    background: var(--hero-accent, var(--color-primary));
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
  }

  .hero__gradient-orb--2 {
    width: 300px;
    height: 300px;
    background: var(--color-accent);
    bottom: -50px;
    left: -50px;
    animation: float 10s ease-in-out infinite reverse;
  }

  .hero__gradient-orb--3 {
    width: 200px;
    height: 200px;
    background: var(--hero-accent, var(--color-primary-light));
    top: 50%;
    left: 50%;
    animation: float 6s ease-in-out infinite;
  }

  .hero__content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 24px;
    pointer-events: none;
  }

  .hero__content * {
    pointer-events: auto;
  }

  .hero__greeting {
    font-size: clamp(1.4rem, 2.5vw, 2rem);
    color: var(--hero-accent, var(--color-primary-light));
    font-weight: 500;
    margin-bottom: 24px;
    letter-spacing: 4px;
    text-transform: uppercase;
  }

  .hero__name {
    font-size: clamp(2.5rem, 15vw, 2rem);
    font-weight: 800;
    color: var(--hero-text-primary, white);
    margin-bottom: 20px;
    line-height: 1.02;
    letter-spacing: -2px;
  }

  .hero__title {
    font-size: clamp(1.2rem, 2.2vw, 1.7rem);
    color: var(--hero-text-secondary, rgba(255, 255, 255, 0.7));
    margin-bottom: 32px;
    font-weight: 300;
    letter-spacing: 2px;
    min-height: 1.7em;
    visibility: hidden;
  }

  .hero__title.visible {
    visibility: visible;
  }

  .hero__motto {
    font-size: clamp(1rem, 1.8vw, 1.3rem);
    color: var(--hero-text-tertiary, rgba(255, 255, 255, 0.5));
    max-width: 600px;
    margin: 0 auto 44px;
    font-style: italic;
    line-height: 1.5;
    min-height: 2em;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: none;
  }

  .hero__motto-text {
    transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
  }

  .hero__motto-text.fade-out {
    opacity: 0;
    transform: translateY(-6px);
  }

  .hero__motto-text.fade-in {
    opacity: 0;
    transform: translateY(6px);
  }

  .hero__motto-text.visible {
    opacity: 1;
    transform: translateY(0);
  }

  .hero__actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
  }

  .hero__scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--hero-text-tertiary, rgba(255, 255, 255, 0.4));
    font-size: 0.9rem;
    cursor: pointer;
    pointer-events: auto;
  }

  .hero__scroll-indicator svg {
    width: 24px;
    height: 32px;
    animation: scroll-indicator 2s ease-in-out infinite;
  }

  .hero .btn-outline {
    border-color: var(--hero-text-secondary, rgba(255, 255, 255, 0.3));
    color: var(--hero-text-primary, white);
  }

  .hero .btn-outline:hover {
    background: var(--hero-accent, var(--color-primary));
    border-color: var(--hero-accent, var(--color-primary));
    color: white;
  }

  .bg-reveal {
    position: absolute;
    inset: 0;
    z-index: 3;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    clip-path: circle(0% at var(--x, 50%) var(--y, 50%));
    transition: clip-path 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
  }

  .bg-reveal.active {
    clip-path: circle(150% at var(--x, 50%) var(--y, 50%));
  }

  .about__avatar-wrapper {
    position: relative;
    display: inline-block;
  }

  .about__avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-primary);
    box-shadow: 0 0 20px var(--color-primary-glow);
    transition: all var(--transition-base);
  }

  .about__avatar:hover {
    box-shadow: 0 0 40px var(--color-primary-glow);
    transform: scale(1.02);
  }

  .about__avatar-glow {
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.3;
    filter: blur(12px);
    z-index: -1;
    animation: pulse-glow 3s ease-in-out infinite;
  }

  .skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    cursor: default;
  }

  .skill-tag:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(22, 93, 255, 0.2);
  }

  .timeline {
    position: relative;
    padding-left: 40px;
  }

  .timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
  }

  .timeline__item {
    position: relative;
    padding-bottom: 40px;
    padding-left: 24px;
  }

  .timeline__item:last-child {
    padding-bottom: 0;
  }

  .timeline__dot {
    position: absolute;
    left: -33px;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 2px var(--color-primary);
  }

  .timeline__dot--education {
    background: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent);
  }

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

  .timeline__year {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 4px;
    font-family: var(--font-mono);
  }

  .timeline__title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
  }

  .timeline__company {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
  }

  .timeline__description {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    line-height: 1.6;
  }

  .project-card {
    position: relative;
    overflow: hidden;
  }

  .project-card__expand {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-in-out, padding 0.3s ease-in-out;
  }

  .project-card__expand.open {
    max-height: 500px;
  }

  .wisdom-universe {
    position: relative;
    min-height: 600px;
    background: linear-gradient(135deg, #0a0a2e 0%, #1a0a3e 30%, #0a0a2e 60%, #0a1a3e 100%);
    border-radius: 24px;
    overflow: hidden;
  }

  .wisdom-universe__canvas {
    position: absolute;
    inset: 0;
  }

  .wisdom-universe__card {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 32px;
    max-width: 420px;
    width: 90%;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease-in-out;
    z-index: 10;
    text-align: center;
  }

  .wisdom-universe__card.visible {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
  }

  .wisdom-universe__card-text {
    font-size: 1.15rem;
    color: white;
    line-height: 1.7;
    font-style: italic;
    margin-bottom: 20px;
  }

  .wisdom-universe__card-author {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
  }

  .btn-random-wisdom {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    color: white;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
  }

  .btn-random-wisdom:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(22, 93, 255, 0.2);
  }

  .btn-random-wisdom.spinning i {
    animation: spin-slow 1s ease-in-out;
  }

  .wisdom-input {
    width: 100%;
    padding: 14px 18px 14px 22px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    color: white;
    font-size: 0.95rem;
    outline: none;
    transition: all var(--transition-fast);
  }

  .wisdom-input::placeholder {
    color: rgba(255, 255, 255, 0.35);
  }

  .wisdom-input:focus {
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.1);
  }

  .guestbook__message {
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
  }

  .guestbook__message:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
  }

  .guestbook__message-text {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 8px;
  }

  .guestbook__message-meta {
    font-size: 0.8rem;
    color: var(--text-tertiary);
  }

  .music-player {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9990;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--bg-card);
    border: var(--card-border);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(16px);
    transition: all var(--transition-base);
    cursor: pointer;
  }

  .music-player:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }

  .music-player__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
  }

  .music-player__btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px var(--color-primary-glow);
  }

  .music-player__info {
    flex: 1;
    min-width: 0;
  }

  .music-player__title {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
  }

  .music-player__controls {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .music-player__toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 4px;
    transition: color var(--transition-fast);
  }

  .music-player__toggle:hover {
    color: var(--color-primary);
  }

  .music-player__volume {
    width: 60px;
    height: 3px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-tertiary);
    border-radius: 2px;
    outline: none;
  }

  .music-player__volume::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
  }

  .music-player--collapsed .music-player__info,
  .music-player--collapsed .music-player__controls {
    display: none;
  }

  .back-to-top {
    position: fixed;
    bottom: 90px;
    right: 28px;
    z-index: 9990;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--bg-card);
    border: var(--card-border);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
  }

  .back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .back-to-top:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px var(--color-primary-glow);
  }

  .footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
  }

  .footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: all var(--transition-fast);
    text-decoration: none;
  }

  .footer__social-link:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--color-primary-glow);
  }

  @media (max-width: 768px) {
    .navbar__links {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: var(--nav-bg-scrolled, var(--bg-primary));
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      flex-direction: column;
      justify-content: center;
      gap: 24px;
      font-size: 1.2rem;
      padding: 24px;
      z-index: -1;
    }

    .navbar__links.mobile-open {
      display: flex;
    }

    .navbar__links.mobile-open .navbar__link {
      color: var(--nav-text-scrolled, var(--text-primary));
    }

    .navbar__links.mobile-open .navbar__link:hover {
      color: var(--color-primary);
    }

    .mobile-menu-btn {
      display: flex;
    }

    .section-padding {
      padding: 60px 0;
    }

    .section-title {
      font-size: 2rem;
    }

    .section-subtitle {
      font-size: 1rem;
      margin-bottom: 40px;
    }

    .hero__actions {
      flex-direction: column;
      align-items: center;
    }

    .timeline {
      padding-left: 24px;
    }

    .timeline__dot {
      left: -17px;
      width: 10px;
      height: 10px;
    }

    .music-player {
      bottom: 16px;
      right: 16px;
      padding: 10px 14px;
    }

    .music-player__title {
      max-width: 80px;
    }

    .back-to-top {
      bottom: 80px;
      right: 20px;
      width: 40px;
      height: 40px;
    }

    .wisdom-universe__card {
      padding: 24px;
    }

    .mouse-glow {
      display: none;
    }
  }

  @media (max-width: 480px) {
    .container-main {
      padding: 0 16px;
    }

    .hero__name {
      font-size: 2rem;
    }

    .project-card {
      padding: 20px;
    }
  }

  @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;
    }
  }
}

.hero__greeting {
  font-size: clamp(1.4rem, 2.5vw, 2rem) !important;
}

.hero__name {
  font-size: clamp(2.5rem, 15vw, 2rem) !important;
}

.section-title {
  font-size: 2.8rem !important;
  font-weight: 800 !important;
  margin-bottom: 2.5rem !important;
}

.section-subtitle {
  text-align: center !important;
  max-width: 600px !important;
  margin-left: auto !important;
  margin-right: auto !important;
  margin-bottom: 60px !important;
}

.wisdom-input {
  padding: 14px 18px 14px 22px !important;
}