/* 프리미엄 다크 모드 및 글래스모피즘 테마 */
:root {
    --bg-color: #0d0f1a;
    --text-main: #f0f2f8;
    --text-muted: #949db5;
    --accent-1: #2a6df4;
    --accent-2: #8a2be2;
    --accent-3: #ff4d94;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
}

/* 동적 배경 (오로라 글로우) */
.bg-gradient-wrap {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    animation: drift 20s infinite alternate;
}

.glow-1 {
    width: 60vw; height: 60vw;
    background: var(--accent-1);
    top: -10vw; left: -10vw;
}

.glow-2 {
    width: 50vw; height: 50vw;
    background: var(--accent-2);
    bottom: -10vw; right: -10vw;
    animation-delay: -5s;
}

.glow-3 {
    width: 40vw; height: 40vw;
    background: var(--accent-3);
    top: 30vh; left: 30vw;
    animation-delay: -10s;
}

@keyframes drift {
    0% { transform: translateY(0) scale(1.0); }
    100% { transform: translateY(50px) scale(1.2); }
}

/* 네비게이션 */
.navbar {
    position: fixed;
    top: 0; width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(13, 15, 26, 0.85);
    backdrop-filter: blur(12px);
    padding: 15px 0;
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    max-width: 1200px; margin: 0 auto;
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 40px;
}

.logo {
    font-size: 1.5rem; font-weight: 800;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent-1);
    background: linear-gradient(45deg, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    list-style: none; display: flex; gap: 30px;
}

.nav-links a {
    color: var(--text-main); text-decoration: none;
    font-weight: 500; font-size: 1rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-1);
}

/* 유틸리티 - 글래스 카드 */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 24px;
    box-shadow: var(--glass-shadow);
    padding: 40px;
}

/* 텍스트 강조 */
.highlight-text {
    background: linear-gradient(90deg, var(--accent-1), var(--accent-2), var(--accent-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(42, 109, 244, 0.15);
    color: #5c93ff;
    border-radius: 50px;
    font-size: 0.85rem; font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

/* 버튼 */
.btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 16px 36px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: white; text-decoration: none;
    font-weight: 600; font-size: 1.1rem;
    border-radius: 50px;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none; cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(42, 109, 244, 0.4);
}

/* 애니메이션 및 스크롤 인터랙션 유틸 */
.hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* 섹션 공통 요소 */
.section-container {
    max-width: 1200px; margin: 0 auto;
    padding: 120px 40px;
}

.section-header {
    text-align: center; margin-bottom: 80px;
}

.section-header h2 {
    font-size: 2.5rem; font-weight: 800; margin-bottom: 20px;
}

.section-header p {
    color: var(--text-muted); font-size: 1.1rem;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    text-align: center;
    padding: 120px 20px 0;
}

.hero-content {
    max-width: 900px; width: 100%;
    transform: translateY(20px);
}

.hero-content h1 {
    font-size: 3.5rem; line-height: 1.3; font-weight: 800;
    margin-bottom: 20px;
}

.slogan {
    font-size: 1.5rem; color: var(--text-muted); font-weight: 300;
    margin-bottom: 60px;
}

.vision-stats {
    display: flex; justify-content: center; gap: 60px;
    margin-bottom: 60px;
}

.stat-item h3 {
    font-size: 1rem; color: var(--text-muted); font-weight: 500;
    margin-bottom: 10px;
}

.stat-item .counter {
    display: inline-block; font-size: 4rem; font-weight: 800;
    background: linear-gradient(135deg, #fff, #a0b2d6);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.stat-item span {
    font-size: 2rem; font-weight: 700; color: #a0b2d6; margin-left: 5px;
}

/* 설문분석 섹션 */
.survey-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.survey-card {
    padding: 40px 30px;
    transition: transform 0.3s ease, background 0.3s ease;
}

.survey-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
}

.survey-card .icon-wrap {
    width: 60px; height: 60px;
    background: rgba(42, 109, 244, 0.2);
    border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 25px;
}

.survey-card .material-symbols-rounded {
    font-size: 32px; color: #5c93ff;
}

.survey-card h3 {
    font-size: 1.3rem; margin-bottom: 15px; font-weight: 700;
}

.survey-card p {
    color: var(--text-muted); font-size: 0.95rem; line-height: 1.7;
}

/* 전략 섹션 */
.strategy-list {
    display: flex; flex-direction: column; gap: 30px;
}

.strategy-item {
    display: flex; align-items: center; gap: 40px;
    padding: 40px 50px;
    transition: transform 0.3s;
}

.strategy-item:hover {
    transform: scale(1.02);
}

.strategy-num {
    font-size: 4.5rem; font-weight: 800;
    opacity: 0.2;
    background: linear-gradient(180deg, var(--accent-1), transparent);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.strategy-info h3 {
    font-size: 1.6rem; font-weight: 700; margin-bottom: 15px;
}

.strategy-info p {
    color: var(--text-muted); font-size: 1.1rem; line-height: 1.6;
}

/* 액션플랜 섹션 */
.action-wrap {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
}

.action-box {
    position: relative; overflow: hidden;
}

.action-box .material-symbols-rounded {
    font-size: 48px; color: var(--accent-3); margin-bottom: 20px;
}

.action-box h3 {
    font-size: 1.8rem; margin-bottom: 30px;
}

.action-box ul {
    list-style: none;
}

.action-box li {
    position: relative; padding-left: 25px; margin-bottom: 15px;
    color: var(--text-muted); font-size: 1.05rem;
}

.action-box li::before {
    content: '→'; position: absolute; left: 0; color: var(--accent-1);
    font-weight: 800;
}

/* Footer */
footer {
    text-align: center; padding: 60px 20px;
    border-top: 1px solid var(--glass-border);
    margin-top: 80px;
}

footer p {
    color: var(--text-muted); margin-bottom: 10px;
}

footer strong {
    color: var(--text-main); font-weight: 600;
}

/* 반응형 모바일 */
@media (max-width: 768px) {
    .nav-container { padding: 0 20px; }
    .nav-links { display: none; }
    .hero-content h1 { font-size: 2.2rem; }
    .vision-stats { flex-direction: column; gap: 30px; }
    .strategy-item { flex-direction: column; text-align: center; padding: 30px 20px; gap: 20px;}
    .action-wrap { grid-template-columns: 1fr; }
}