:root {
    --primary: #d4af37;
    --primary-light: #f5d76e;
    --bg-dark: #000000;
}

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

html, body {
    width: 100%;
    margin: 0;
    background-color: var(--bg-dark);
    font-family: 'Noto Sans KR', sans-serif;
    color: #fff;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    scroll-behavior: smooth;
}

/* 데스크톱 빈 좌우 공간을 채우는 어두운 골드 그라디언트 + 비네트 */
body {
    background:
        radial-gradient(ellipse at center, rgba(60, 50, 20, 0.55) 0%, rgba(0, 0, 0, 0.95) 60%, #000 100%),
        linear-gradient(135deg, #1a1610 0%, #0a0908 50%, #1a1610 100%);
    background-attachment: fixed;
    min-height: 100vh;
}

/* 컨테이너: 모바일 100% / 태블릿 720 / 데스크톱 1080 */
.app-container {
    max-width: 100%;
    margin: 0 auto;
    background-color: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

/* 태블릿+ */
@media (min-width: 481px) {
    .app-container {
        max-width: 720px;
        border-left: 1px solid rgba(212, 175, 55, 0.25);
        border-right: 1px solid rgba(212, 175, 55, 0.25);
        box-shadow:
            0 0 80px rgba(212, 175, 55, 0.15),
            0 0 160px rgba(0, 0, 0, 0.85);
    }
}

/* 데스크톱 */
@media (min-width: 1024px) {
    .app-container {
        max-width: 1080px;
    }
}

/* 와이드 모니터 */
@media (min-width: 1600px) {
    .app-container {
        max-width: 1280px;
    }
}

/* 이미지 섹션 — 자연 비율, 잘림 없음 */
.fullscreen-section,
.phone-image-section {
    width: 100%;
    line-height: 0;
}

.bg-img-wrap,
.phone-image-section a {
    display: block;
    width: 100%;
}

.bg-img-wrap img,
.phone-image-section img {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}