:root {
	--primary-color: #a5b4fc;
	--secondary-color: #6c4dc0;
	--background-dark: #272727;
	--text-color: #ffffff;
	--header-bg: linear-gradient(135deg, #333, #444);
	--header-shadow: 0 4px 8px rgba(0,0,0,0.3);
	--neon-border: linear-gradient(45deg, #a5b4fc, #6c4dc0);
	--transition-fast: 0.3s ease;
	--banner-bg: url('https://www.example.com/banner.jpg'); 
	--banner-overlay: rgba(0, 0, 0, 0.5);
	--features-bg: #1e1e1e;
	--features-card-bg: rgba(255, 255, 255, 0.1);
	--testimonials-bg: linear-gradient(135deg, #333, #444);
	--bg-design-default: var(--background-dark) url('https://www.transparenttextures.com/patterns/dark-matter.png') repeat;
	--bg-design-variant1: linear-gradient(135deg, #1c1c1c, #333);
	--bg-design-variant2: url('https://www.example.com/bg-pattern.jpg') repeat;
}
body {
  background: var(--background-dark) url('https://www.transparenttextures.com/patterns/dark-matter.png') repeat;
  color: var(--text-color);
  font-family: 'Inter', sans-serif;
  position: relative;
  overflow-x: hidden;
  transition: background 0.5s ease;
}
header.nav-header {
  display: flex;
  justify-content: space-between;
  padding: 20px;
  background: var(--header-bg);
  box-shadow: var(--header-shadow);
  backdrop-filter: blur(10px);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background 0.5s ease, box-shadow 0.5s ease;
}
header.nav-header nav a {
  margin: 0 10px;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 600;
  position: relative;
  transition: color var(--transition-fast);
  white-space: nowrap;
}
header.nav-header nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-fast);
}
header.nav-header nav a:hover::after {
  width: 100%;
}
header.nav-header nav a:hover {
  color: #a5b4fc;
}
header.nav-header:hover {
  background: linear-gradient(135deg, #444, #555);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.5);
}
.main-title {
  font-size: 3rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
  white-space: nowrap;
}
.glass-panel {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  transform-style: preserve-3d;
}
.glass-panel:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.35), 0 0 20px var(--primary-color);
}
.glass-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  z-index: -1;
  opacity: 0.7;
}
.scrollable-content {
  overflow-y: auto;
  max-height: 250px;
  margin-bottom: 1rem;
  padding-right: 0.5rem;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}
.scrollable-content::-webkit-scrollbar {
  width: 6px;
}
.scrollable-content::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 3px;
}
.card-container {
  position: relative;
  width: 100%;
  margin-bottom: 2rem;
}
@media (max-width: 768px) {
  .card-container {
    margin-bottom: 3rem;
  }
  .glass-panel {
    padding: 1.5rem;
  }
  .scrollable-content {
    max-height: 200px;
  }
}
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(to right, #fff, #a5b4fc);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 5px rgba(0,0,0,0.5);
  letter-spacing: 0.05em;
  padding: 0.5rem 1rem;
  display: inline-block;
  border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}
.neon-button {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-color);
  padding: 0.8rem 1.8rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-image: var(--neon-border) 1;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  position: relative;
  text-decoration: none;
}
.neon-button:hover {
  background: rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.6);
  transform: translateY(-3px);
}
#back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #6c4dc0;
  color: #fff;
  padding: 0.5rem 0.75rem;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  display: none;
  z-index: 100;
  transition: transform 0.3s;
  font-size: 1.5rem;
}
#back-to-top:hover {
  transform: scale(1.1);
}
@media (max-width: 1024px) {
  .glass-panel {
    max-width: 95%;
  }
}
@media (max-width: 768px) {
  .main-title {
    font-size: 2.5rem;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .neon-button {
    font-size: 1.5rem;
    padding: 0.6rem 1.5rem;
  }
}
@media (max-width: 768px) {
	/* 헤더 전체 영역을 세로 배치 */
	header.nav-header {
		flex-direction: column;
		align-items: center;
	}
	/* 내비게이션 항목 간 간격 확보 */
	header.nav-header nav {
		margin-top: 10px;
		flex-wrap: wrap;
		gap: 10px;
		justify-content: center;
	}
}
.container.center-content {
  max-width: 900px;
  padding: 0 20px;
}
.section-spacing {
  margin-bottom: 15rem;
}
.grid.gap-10 {
  gap: 2.5rem !important;
}
.page-bottom-space {
  height: 15rem;
}
.btn-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.voice-channels {
  max-height: 500px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #202225 #2f3136;
}
.voice-channels::-webkit-scrollbar {
  width: 8px;
}
.voice-channels::-webkit-scrollbar-track {
  background: #2f3136;
  border-radius: 4px;
}
.voice-channels::-webkit-scrollbar-thumb {
  background-color: #202225;
  border-radius: 4px;
}
.member-list {
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.channel:hover .member-list {
  background: rgba(79, 84, 92, 0.16);
  border-radius: 4px;
}
.category-arrow {
  transition: transform 0.2s ease;

}
.category-arrow:hover {
  transform: rotate(90deg);
}


.banner-section {
	position: relative;
	background: var(--banner-bg) no-repeat center center/cover;
	height: 60vh;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--text-color);
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
}
.banner-section::before {
	content: '';
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	background: var(--banner-overlay);
}
.banner-section .content {
	position: relative;
	z-index: 1;
	text-align: center;
	font-size: 2rem;
}


.features-section {
	background: var(--features-bg);
	padding: 4rem 2rem;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 2rem;
	color: var(--text-color);
}
.features-section .card {
	background: var(--features-card-bg);
	padding: 1.5rem;
	border-radius: 12px;
	box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
	transition: transform var(--transition-fast);
}
.features-section .card:hover {
	transform: translateY(-5px);
}


.testimonials-section {
	background: var(--testimonials-bg);
	padding: 4rem 2rem;
	position: relative;
	color: var(--text-color);
}
.testimonials-section::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: rgba(0, 0, 0, 0.4);
}
.testimonials-section .testimonial {
	position: relative;
	z-index: 1;
	margin: 1rem auto;
	max-width: 800px;
	padding: 1.5rem;
	border-radius: 12px;
	background: rgba(255, 255, 255, 0.1);
	text-align: center;
	font-style: italic;
}

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

.animated-bg {
  background: linear-gradient(135deg, #272727, #444, #272727);
  background-size: 200% 200%;
  animation: gradientShift 20s ease infinite;
}

.bg-design-default {
  background: var(--bg-design-default);
  transition: background 0.5s ease, opacity 0.5s ease;
}

.bg-design-variant1 {
  background: var(--bg-design-variant1);
  transition: background 0.5s ease, opacity 0.5s ease;
}

.bg-design-variant2 {
  background: var(--bg-design-variant2);
  transition: background 0.5s ease, opacity 0.5s ease;
}