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

:root {
    --bg-dark: #0a0a0a;
    --text-white: #ffffff;
    --text-light: #e8e8e8;
    --accent: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'SF Pro Display', 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(to bottom, #0a0a0a 0%, #000000 50%, #0a0a0a 100%);
    color: var(--text-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
}

/* Cursor Glow Effect */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    mix-blend-mode: screen;
    transition: transform 0.3s ease;
    z-index: 1;
    opacity: 0;
}

body:hover .cursor-glow {
    opacity: 1;
}

.container {
    max-width: 920px;
    margin: 0 auto;
    padding: 10rem 3rem 8rem;
    position: relative;
    z-index: 2;
}

section {
    margin-bottom: 18rem;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Hero Section */
.hero {
    margin-bottom: 20rem;
}

h1 {
    font-size: clamp(4rem, 12vw, 8rem);
    font-weight: 600;
    letter-spacing: -0.035em;
    margin-bottom: 4rem;
    line-height: 0.9;
    color: var(--text-white);
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
    0%, 100% {
        text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
    }
    50% {
        text-shadow: 0 0 40px rgba(255, 255, 255, 0.2);
    }
}

.hero-subtitle {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.45;
    margin-bottom: 0;
    font-weight: 400;
    color: var(--text-white);
    opacity: 0;
    animation: fadeInUp 1s ease forwards 0.3s;
}

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

/* Attributes Section */
.attributes {
    margin-bottom: 20rem;
}

.attribute-item {
    font-size: clamp(1.5rem, 3.5vw, 2rem);
    font-weight: 500;
    letter-spacing: -0.015em;
    line-height: 1.6;
    color: var(--text-light);
    margin-bottom: 2rem;
    padding-left: 2rem;
    border-left: 2px solid transparent;
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateX(-20px);
}

.visible .attribute-item {
    animation: slideInLeft 0.6s ease forwards;
}

.visible .attribute-item:nth-child(1) { animation-delay: 0.1s; }
.visible .attribute-item:nth-child(2) { animation-delay: 0.2s; }
.visible .attribute-item:nth-child(3) { animation-delay: 0.3s; }
.visible .attribute-item:nth-child(4) { animation-delay: 0.4s; }
.visible .attribute-item:nth-child(5) { animation-delay: 0.5s; }
.visible .attribute-item:nth-child(6) { animation-delay: 0.6s; }

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.attribute-item:hover {
    border-left-color: var(--accent);
    color: var(--text-white);
    padding-left: 2.5rem;
    text-shadow: 0 0 20px var(--accent-glow);
}

/* Section Headings */
h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    margin-bottom: 4rem;
    line-height: 1.1;
    color: var(--text-white);
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent) 0%, transparent 100%);
    transition: width 0.8s ease;
}

.visible h2::after {
    width: 100%;
}

/* Text Content */
p, li {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    line-height: 1.75;
    margin-bottom: 2rem;
    font-weight: 400;
    color: var(--text-light);
    transition: color 0.3s ease;
}

p:hover, li:hover {
    color: var(--text-white);
}

/* Lists */
ul {
    list-style: none;
    margin-bottom: 0;
}

li {
    margin-bottom: 1.5rem;
    padding-left: 0;
    position: relative;
    opacity: 0;
    transform: translateY(10px);
}

.visible li {
    animation: fadeInUp 0.5s ease forwards;
}

.visible li:nth-child(1) { animation-delay: 0.1s; }
.visible li:nth-child(2) { animation-delay: 0.2s; }
.visible li:nth-child(3) { animation-delay: 0.3s; }
.visible li:nth-child(4) { animation-delay: 0.4s; }
.visible li:nth-child(5) { animation-delay: 0.5s; }
.visible li:nth-child(6) { animation-delay: 0.6s; }
.visible li:nth-child(7) { animation-delay: 0.7s; }
.visible li:nth-child(8) { animation-delay: 0.8s; }

li::before {
    content: '→';
    position: absolute;
    left: -2rem;
    color: var(--accent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

li:hover::before {
    opacity: 1;
}

/* Boundary Section */
.boundary-section {
    margin-bottom: 10rem;
}

.boundary-section p {
    margin-bottom: 1.5rem;
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 6rem 2rem 6rem;
    }
    
    section {
        margin-bottom: 12rem;
    }

    .hero {
        margin-bottom: 14rem;
    }

    .attributes {
        margin-bottom: 14rem;
    }

    .attribute-item {
        padding-left: 1rem;
    }

    .cursor-glow {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 4rem 1.5rem 4rem;
    }
    
    section {
        margin-bottom: 10rem;
    }

    .hero {
        margin-bottom: 12rem;
    }

    .attributes {
        margin-bottom: 12rem;
    }
}

/* Fade In Animation Class */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}