:root {
    --bg-color: #0a0a0c;
    --text-color: #e0e0e0;
    --primary-color: #00f2ff;
    --secondary-color: #7000ff;
    --tertiary-color: #ff00c8;
    --card-bg: #16161a;
    --accent-glow: rgba(0, 242, 255, 0.3);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Pretendard', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

header {
    height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: radial-gradient(circle at center, #1a1a2e 0%, var(--bg-color) 70%);
}

h1 {
    font-size: 4rem;
    font-weight: 900;
    letter-spacing: -2px;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.glitch {
    position: relative;
    color: white;
    text-shadow: 0.05em 0 0 rgba(255, 0, 0, 0.75),
                -0.025em -0.05em 0 rgba(0, 255, 0, 0.75),
                0.025em 0.05em 0 rgba(0, 0, 255, 0.75);
    animation: glitch 500ms infinite;
}

@keyframes glitch {
    0% { text-shadow: 0.05em 0 0 rgba(255, 0, 0, 0.75), -0.05em -0.025em 0 rgba(0, 255, 0, 0.75), -0.025em 0.05em 0 rgba(0, 0, 255, 0.75); }
    14% { text-shadow: 0.05em 0 0 rgba(255, 0, 0, 0.75), -0.05em -0.025em 0 rgba(0, 255, 0, 0.75), -0.025em 0.05em 0 rgba(0, 0, 255, 0.75); }
    15% { text-shadow: -0.05em -0.025em 0 rgba(255, 0, 0, 0.75), 0.025em 0.025em 0 rgba(0, 255, 0, 0.75), -0.05em -0.05em 0 rgba(0, 0, 255, 0.75); }
    49% { text-shadow: -0.05em -0.025em 0 rgba(255, 0, 0, 0.75), 0.025em 0.025em 0 rgba(0, 255, 0, 0.75), -0.05em -0.05em 0 rgba(0, 0, 255, 0.75); }
    50% { text-shadow: 0.025em 0.05em 0 rgba(255, 0, 0, 0.75), 0.05em 0 0 rgba(0, 255, 0, 0.75), 0 -0.05em 0 rgba(0, 0, 255, 0.75); }
    99% { text-shadow: 0.025em 0.05em 0 rgba(255, 0, 0, 0.75), 0.05em 0 0 rgba(0, 255, 0, 0.75), 0 -0.05em 0 rgba(0, 0, 255, 0.75); }
    100% { text-shadow: -0.025em 0 0 rgba(255, 0, 0, 0.75), -0.025em -0.025em 0 rgba(0, 255, 0, 0.75), -0.025em -0.05em 0 rgba(0, 0, 255, 0.75); }
}

.subtitle {
    font-size: 1.2rem;
    color: #888;
    max-width: 600px;
}

.roadmap-section {
    margin-bottom: 6rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

.section-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-bottom: 1rem;
    border: 1px solid currentColor;
}

.primary .section-badge { color: var(--primary-color); }
.secondary .section-badge { color: var(--secondary-color); }
.tertiary .section-badge { color: var(--tertiary-color); }

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #333;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 0 20px var(--accent-glow);
}

.ai-card:hover {
    border-color: var(--secondary-color);
    box-shadow: 0 0 20px rgba(112, 0, 255, 0.3);
}

.devops-card:hover {
    border-color: var(--tertiary-color);
    box-shadow: 0 0 20px rgba(255, 0, 200, 0.3);
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #fff;
}

ul {
    list-style: none;
}

li {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    color: #aaa;
}

li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.secondary li::before { color: var(--secondary-color); }
.tertiary li::before { color: var(--tertiary-color); }

footer {
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid #222;
    color: #666;
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.8rem; }
}