:root {
    --bg-color: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --card-bg: rgba(30, 41, 59, 0.4);
    --card-border: rgba(255, 255, 255, 0.1);
    --card-hover-border: rgba(255, 255, 255, 0.3);
    --primary: #3b82f6;
    --primary-glow: rgba(59, 130, 246, 0.5);
    --success: #10b981;
    --offline: #ef4444;
    --github: #8b5cf6;
}

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

body {
    font-family: 'Outfit', 'Noto Sans KR', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Background animated blobs */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    filter: blur(100px);
    border-radius: 50%;
    animation: float 20s infinite alternate ease-in-out;
    opacity: 0.5;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #3b82f6, #1d4ed8);
}

.blob-2 {
    bottom: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #8b5cf6, #6d28d9);
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 50%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #ec4899, #be185d);
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(100px, 50px) scale(1.2); }
}

/* Typography & Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.header {
    text-align: center;
    padding: 6rem 2rem 4rem;
}

.logo {
    font-size: 5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    letter-spacing: -2px;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.notice-box {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    padding: 1rem 1.5rem;
    border-radius: 100px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.notice-box p {
    font-weight: 500;
    font-size: 0.95rem;
}

/* Sections */
.section {
    margin-bottom: 6rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Cards Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

/* Glassmorphism Card */
.card {
    text-decoration: none;
    color: inherit;
    display: block;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2rem;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255,255,255,0.06), transparent 40%);
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 1;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--card-hover-border);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 20px var(--primary-glow);
}

.card:hover::before {
    opacity: 1;
}

.card-content {
    position: relative;
    z-index: 2;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.status {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.status.online {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.status.offline {
    background: rgba(239, 68, 68, 0.15);
    color: var(--offline);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.status.github {
    background: rgba(139, 92, 246, 0.15);
    color: #c4b5fd;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.card-description {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.card-footer {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--primary);
}

.link-text {
    position: relative;
    display: inline-block;
}

.link-text::after {
    content: '→';
    position: absolute;
    right: -20px;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.card:hover .link-text::after {
    opacity: 1;
    transform: translateX(0);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--card-border);
    margin-top: 4rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

/* Responsive */
@media (max-width: 768px) {
    .logo {
        font-size: 3.5rem;
    }
    
    .notice-box {
        flex-direction: column;
        text-align: center;
        border-radius: 20px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}