/* Noto Sans KR 폰트 불러오기 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;700;900&display=swap');

/* === 1. 기본 및 공통 스타일 === */
body {
    font-family: 'Noto Sans KR', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #121212;
    color: #E0E0E0;
    line-height: 1.8;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

h1, h2, h3 {
    color: #FFFFFF;
    letter-spacing: -1px;
    font-weight: 900;
}

h1 { font-size: 3.5em; }
h2 { font-size: 2.5em; text-align: center; margin-bottom: 60px; }
h3 { font-size: 1.6em; }

p {
    font-size: 1.1em;
    color: #BDBDBD;
}

.highlight {
    color: #00A9FF;
    font-weight: 700;
}

/* === 2. 재사용 컴포넌트 (버튼, 카드 등) === */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 1em;
    font-weight: 700;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: #00A9FF;
    color: #FFFFFF;
}

.btn-primary:hover {
    background-color: #0086CC;
    transform: translateY(-3px);
}

.btn-secondary {
    background-color: transparent;
    color: #E0E0E0;
    border: 2px solid #555;
}

.btn-secondary:hover {
    background-color: #E0E0E0;
    color: #121212;
    border-color: #E0E0E0;
}

/* === 3. 네비게이션 및 푸터 (모든 페이지 공통) === */
header {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    background-color: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #2a2a2a;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

nav .logo {
    font-size: 1.5em;
    font-weight: 900;
    color: #FFFFFF;
    text-decoration: none;
}

nav .nav-links a {
    color: #E0E0E0;
    text-decoration: none;
    margin-left: 30px;
    font-weight: 700;
    transition: color 0.3s ease;
}

nav .nav-links a:hover {
    color: #00A9FF;
}

nav .nav-cta {
    background-color: #00A9FF;
    color: #FFFFFF;
    padding: 8px 20px;
    border-radius: 20px;
}

nav .nav-cta:hover {
    color: #FFFFFF;
    background-color: #0086CC;
}

footer {
    background-color: #1a1a1a;
    text-align: center;
    padding: 40px 20px;
    font-size: 0.9em;
    color: #757575;
    border-top: 1px solid #2a2a2a;
}
footer strong { color: #BDBDBD; }

/* === 4. 페이지별 스타일 === */

/* --- 메인 페이지 (index.html) --- */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
    color: #fff;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.8)), url('https://images.unsplash.com/photo-1520467795206-62e33627e6ce?q=80&w=1887&auto=format&fit=crop') no-repeat center center;
    background-size: cover;
}

.hero .hero-content {
    max-width: 800px;
}
.hero p { font-size: 1.3em; color: #CFD8DC; margin-bottom: 40px; }
.hero .cta-buttons { display: flex; gap: 20px; justify-content: center; }

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    text-align: center;
}
.feature-item { padding: 20px; }
.feature-item .icon { font-size: 3em; color: #00A9FF; }
.feature-item h3 { margin-top: 20px; }

.b2b-promo {
    background-color: #1a1a1a;
    padding: 80px 0;
    text-align: center;
}

/* --- 제휴 페이지 (partnership.html) --- */
.page-header {
    padding-top: 150px;
    padding-bottom: 80px;
    text-align: center;
    background-color: #1a1a1a;
}
.benefit-item, .process-item {
    background-color: #1E1E1E;
    padding: 30px;
    border-radius: 8px;
    border-left: 5px solid #00A9FF;
    margin-bottom: 20px;
}
.models {
    display: flex; gap: 30px; justify-content: center; flex-wrap: wrap;
}
.model-card {
    background-color: #1E1E1E; padding: 30px; border-radius: 8px; width: 300px;
    text-align: center; border-top: 5px solid #00A9FF;
}
.model-card .price { font-size: 1.2em; color: #00A9FF; font-weight: 700; }

/* --- 갤러리 페이지 (gallery.html) --- */
.gallery-grid {
    columns: 4 250px;
    column-gap: 15px;
}
.gallery-grid img {
    width: 100%;
    margin-bottom: 15px;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.gallery-grid img:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 30px rgba(0, 169, 255, 0.4);
}

/* --- 소개 페이지 (about.html) --- */
.vision-section { text-align: center; max-width: 800px; margin: 0 auto; }
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 60px;
}
.team-card {
    background-color: #1a1a1a;
    padding: 30px;
    text-align: center;
    border-radius: 8px;
}
.team-card img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #00A9FF;
}
.team-card h3 { margin-top: 20px; }
.team-card .role { color: #00A9FF; font-weight: 700; }

/* 모바일 반응형 */
@media (max-width: 768px) {
    h1 { font-size: 2.5em; }
    h2 { font-size: 2em; }
    nav .nav-links { display: none; } /* 간단하게 모바일에서는 메뉴 숨김 처리 */
    .hero .cta-buttons { flex-direction: column; }
}