/* 
  Maximalism Design CSS for Project
  Author: Gemini
*/

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@900&family=Noto+Sans+KR:wght@400;700;900&family=Roboto:ital,wght@0,400;0,700;1,400&display=swap');

:root {
  --color-primary: #FFDE00; /* Bright Yellow */
  --color-secondary: #F038FF; /* Magenta */
  --color-accent: #00A3FF; /* Bright Blue */
  --color-background: #121212;
  --color-text: #FFFFFF;
  --color-dark-variant: #1E1E1E;
  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Noto Sans KR', sans-serif;
  --font-mono: 'Roboto Mono', monospace;
}

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

body {
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
}

/* --- Domain Sale Banner --- */
.sale-banner {
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  color: var(--color-background);
  text-align: center;
  padding: 1rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 900;
  position: sticky;
  top: 0;
  z-index: 1000;
  animation: pulse 3s infinite;
}

.sale-banner a {
  color: #000;
  text-decoration: underline;
  font-weight: 900;
}

@keyframes pulse {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 222, 0, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(255, 222, 0, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 222, 0, 0); }
}

/* --- Header --- */
.site-header {
  padding: 4rem 0;
  text-align: center;
  position: relative;
  background: var(--color-dark-variant);
  border-bottom: 5px solid var(--color-primary);
  overflow: hidden;
}

.site-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        from 180deg at 50% 50%,
        #ff0000, #ff7f00, #ffff00, #00ff00, #0000ff, #4b0082, #9400d3, #ff0000
    );
    animation: rotate 10s linear infinite;
    z-index: 1;
    opacity: 0.1;
}

.site-header .container {
    position: relative;
    z-index: 2;
}

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

.site-title {
  font-family: var(--font-display);
  font-size: 5rem;
  color: var(--color-primary);
  text-transform: uppercase;
  margin: 0;
  line-height: 1;
  text-shadow: 
    3px 3px 0 var(--color-secondary),
    -3px -3px 0 var(--color-accent);
}

.site-tagline {
  font-size: 1.5rem;
  color: var(--color-text);
  margin-top: 1rem;
  font-family: 'Roboto', sans-serif;
  font-weight: 700;
}

/* --- Navigation --- */
.main-nav {
    background: var(--color-dark-variant);
    padding: 1rem 0;
    border-bottom: 2px solid var(--color-accent);
}

.main-nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
}

.main-nav ul li a {
    color: var(--color-text);
    text-decoration: none;
    font-family: var(--font-display);
    padding: 0.5rem 1.5rem;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
}

.main-nav ul li a:hover {
    background: var(--color-primary);
    color: var(--color-background);
    text-shadow: 1px 1px 0 var(--color-secondary);
}

/* --- Main Content --- */
.main-content {
  padding: 4rem 0;
}

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

.card {
    background: var(--color-dark-variant);
    border: 2px solid var(--color-secondary);
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
}

.card::before {
    content: '⬢'; /* Hexagon */
    font-size: 10rem;
    position: absolute;
    top: -2rem;
    right: -2rem;
    color: var(--color-primary);
    opacity: 0.1;
    transform: rotate(15deg);
}

.card h2 {
    font-family: var(--font-display);
    color: var(--color-accent);
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-dark-variant);
  padding: 4rem 0;
  margin-top: 4rem;
  border-top: 5px solid var(--color-secondary);
  text-align: center;
}

.footer-section h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: 2rem;
  text-transform: uppercase;
}

.backlink-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 3rem;
}

.backlink-item {
    background: #2a2a2a;
    padding: 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.backlink-item:hover {
    background: var(--color-primary);
}

.backlink-item a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 700;
}

.backlink-item:hover a {
    color: var(--color-background);
}

.backlink-item span {
    display: block;
    font-size: 0.8rem;
    color: #aaa;
    margin-top: 5px;
}

.backlink-item:hover span {
    color: #333;
}

.footer-notice {
    margin-top: 3rem;
    font-size: 0.9rem;
    color: #888;
}

/* Responsive */
@media (max-width: 768px) {
    .site-title {
        font-size: 3rem;
    }
    .site-tagline {
        font-size: 1.2rem;
    }
    .main-nav ul {
        flex-direction: column;
        align-items: center;
    }
    .main-nav ul li a {
        padding: 0.8rem 1.5rem;
    }
}