@charset "UTF-8";
/* =========================================================================
 * DK드론 - 홈페이지 전용 스타일 (main.css)
 * 히어로 / 인트로 / 솔루션 / 제품 / Why / CTA / 영상모달
 * ========================================================================= */

/* -------------------------------------------------------------------------
 * 히어로
 * ------------------------------------------------------------------------- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 680px;
    overflow: hidden;
}

/* 개별 슬라이드 : 스택 배치 후 크로스페이드 */
.hero__slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    z-index: 0;
    transition: opacity 1s var(--ease),
                visibility 1s var(--ease);
}

.hero__slide.is-active {
    opacity: 1;
    visibility: visible;
    z-index: 1;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.12);
    z-index: 0;
}

/* 배경 영상 : 컨테이너를 꽉 채우도록 cover 처리 */
.hero__bg--video {
    background: #0a0d14;
    overflow: hidden;
}

.hero__bg--video video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* 활성 슬라이드만 천천히 확대 (케네버스 효과, 전환 시 재생) */
.hero__slide.is-active .hero__bg {
    animation: heroZoom 7s ease-out forwards;
}

/* 영상 배경은 자체 모션이 있으므로 줌 효과 제외 */
.hero__slide.is-active .hero__bg--video {
    animation: none;
    transform: none;
}

@keyframes heroZoom {
    to { transform: scale(1); }
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(10, 13, 20, 0.92) 0%, rgba(10, 13, 20, 0.65) 55%, rgba(10, 13, 20, 0.35) 100%);
    z-index: 1;
}

.hero__inner {
    position: relative;
    z-index: 2;
    padding-top: var(--header-h);
}

/* 슬라이드 텍스트 진입 애니메이션 (활성 시) */
.hero__slide .hero__title,
.hero__slide .hero__lead,
.hero__slide .hero__actions {
    opacity: 0;
    transform: translateY(34px);
    transition: opacity 0.9s var(--ease),
                transform 0.9s var(--ease);
}

.hero__slide.is-active .hero__title { transition-delay: 0.25s; }
.hero__slide.is-active .hero__lead { transition-delay: 0.4s; }
.hero__slide.is-active .hero__actions { transition-delay: 0.55s; }

.hero__slide.is-active .hero__title,
.hero__slide.is-active .hero__lead,
.hero__slide.is-active .hero__actions {
    opacity: 1;
    transform: translateY(0);
}

/* 좌측 세로 슬라이드 카운터 (02 / 03) */
.hero__counter {
    position: absolute;
    left: 42px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    z-index: 2;
}

.hero__counter .cur {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.1em;
}

.hero__counter .bar {
    width: 2px;
    height: 260px;
    background: rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

/* 진행 게이지 : JS 가 슬라이드 시간에 맞춰 height 를 0→100% 로 채움 */
.hero__counter .bar b {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 0;
    background: var(--c-primary-2);
}

.hero__counter .total {
    font-size: 15px;
    font-weight: 700;
    color: var(--c-text-dim);
    letter-spacing: 0.1em;
}

.hero__title {
    font-size: 76px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.hero__lead {
    margin-top: 26px;
    font-size: 18px;
    line-height: 1.7;
    color: var(--c-text-sub);
}

.hero__actions {
    margin-top: 46px;
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
}

/* Read More 다크 필 버튼 (텍스트 + 원형 화살표) */
.hero__more {
    display: inline-flex;
    align-items: center;
    gap: 26px;
    height: 68px;
    padding: 0 12px 0 34px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    background: rgba(18, 22, 30, 0.55);
    border: 1px solid var(--c-line);
    border-radius: 50px;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: background var(--t-fast) var(--ease),
                border-color var(--t-fast) var(--ease);
}

.hero__more-ico {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--c-primary);
    color: #fff;
    font-size: 15px;
    transition: transform var(--t-fast) var(--ease),
                background var(--t-fast) var(--ease);
}

.hero__more:hover {
    background: rgba(18, 22, 30, 0.8);
    border-color: var(--c-line-strong);
}

.hero__more:hover .hero__more-ico {
    background: var(--c-primary-2);
    transform: translateX(4px);
}

/* 우측 하단 스크롤 인디케이터 (Scroll Down + 마우스) - 플로팅 버튼과 겹치지 않도록 오프셋 */
.hero__scroll {
    position: absolute;
    right: 130px;
    bottom: 44px;
    display: flex;
    align-items: center;
    gap: 14px;
    z-index: 2;
}

.hero__scroll em {
    font-size: 13px;
    letter-spacing: 0.08em;
    font-style: normal;
    color: var(--c-text-sub);
}

.hero__scroll .mouse {
    width: 22px;
    height: 34px;
    border: 1px solid var(--c-line-strong);
    border-radius: 12px;
    position: relative;
}

.hero__scroll .mouse b {
    position: absolute;
    left: 50%;
    top: 8px;
    width: 3px;
    height: 6px;
    margin-left: -1.5px;
    border-radius: 2px;
    background: var(--c-primary-2);
    animation: mouseWheel 1.6s ease-in-out infinite;
}

@keyframes mouseWheel {
    0% { opacity: 0; transform: translateY(-4px); }
    40% { opacity: 1; }
    100% { opacity: 0; transform: translateY(10px); }
}

/* 우측 하단 고정 플로팅 버튼 (브랜드 영상 재생) */
.floating-btn {
    position: fixed;
    right: 34px;
    bottom: 34px;
    width: 60px;
    height: 60px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--c-primary);
    color: #fff;
    font-size: 18px;
    z-index: 900;
    box-shadow: 0 12px 30px -8px rgba(47, 123, 255, 0.7);
    transition: transform var(--t-fast) var(--ease),
                background var(--t-fast) var(--ease);
}

/* 잔잔한 확산 링 효과 */
.floating-btn::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid var(--c-primary);
    animation: playPulse 2.4s ease-out infinite;
}

@keyframes playPulse {
    0% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(1.5); opacity: 0; }
}

.floating-btn:hover {
    background: var(--c-primary-2);
    transform: translateY(-4px);
}

/* -------------------------------------------------------------------------
 * 인트로
 * ------------------------------------------------------------------------- */
.intro__inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 80px;
    align-items: center;
}

.intro__desc {
    margin-top: 28px;
    font-size: 17px;
    color: var(--c-text-sub);
}

.intro__list {
    margin: 30px 0 38px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.intro__list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    color: var(--c-text);
}

.intro__list i {
    color: var(--c-primary-2);
    font-size: 18px;
}

/* 통계 카드 */
.intro__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat {
    background: var(--c-surface);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    padding: 34px 28px;
    transition: transform var(--t-base) var(--ease),
                border-color var(--t-base) var(--ease);
}

.stat:hover {
    transform: translateY(-6px);
    border-color: var(--c-primary);
}

.stat strong {
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
    color: #fff;
    letter-spacing: -0.03em;
}

.stat .unit {
    font-size: 22px;
    font-weight: 700;
    color: var(--c-primary-2);
    margin-left: 4px;
}

.stat p {
    margin-top: 12px;
    font-size: 15px;
    color: var(--c-text-sub);
}

/* -------------------------------------------------------------------------
 * 솔루션
 * ------------------------------------------------------------------------- */
.solutions {
    background: var(--c-bg-2);
}

.sol-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.sol-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--c-line);
    background: var(--c-surface);
    transition: transform var(--t-base) var(--ease),
                border-color var(--t-base) var(--ease);
}

.sol-card:hover {
    transform: translateY(-8px);
    border-color: var(--c-primary);
}

.sol-card__img {
    height: 260px;
    background-size: cover;
    background-position: center;
    transition: transform 0.7s var(--ease);
}

.sol-card:hover .sol-card__img {
    transform: scale(1.07);
}

.sol-card__body {
    position: relative;
    padding: 32px 30px 34px;
}

.sol-card__no {
    position: absolute;
    top: -34px;
    right: 26px;
    font-size: 60px;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.06);
    letter-spacing: -0.05em;
}

.sol-card__body h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 14px;
}

.sol-card__body p {
    font-size: 15px;
    color: var(--c-text-sub);
    min-height: 66px;
}

.sol-card__more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--c-primary-2);
    transition: gap var(--t-fast) var(--ease);
}

.sol-card:hover .sol-card__more {
    gap: 14px;
}

/* -------------------------------------------------------------------------
 * 제품
 * ------------------------------------------------------------------------- */
.sec-head--row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 30px;
}

.prod-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.prod-card {
    background: var(--c-surface);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform var(--t-base) var(--ease),
                border-color var(--t-base) var(--ease);
}

.prod-card:hover {
    transform: translateY(-8px);
    border-color: var(--c-primary);
}

.prod-card__thumb {
    aspect-ratio: 1 / 1;
    background: radial-gradient(circle at 50% 40%, #1e2836 0%, #10151f 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 34px;
}

.prod-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.5));
    transition: transform var(--t-base) var(--ease);
}

.prod-card:hover .prod-card__thumb img {
    transform: scale(1.08) rotate(-2deg);
}

.prod-card__info {
    padding: 24px 24px 28px;
}

.prod-card__cat {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--c-primary-2);
    letter-spacing: 0.04em;
    margin-bottom: 10px;
}

.prod-card__info h3 {
    font-size: 21px;
    font-weight: 700;
    margin-bottom: 8px;
}

.prod-card__info p {
    font-size: 14px;
    color: var(--c-text-sub);
}

/* -------------------------------------------------------------------------
 * Why DK드론
 * ------------------------------------------------------------------------- */
.why {
    position: relative;
    background: var(--c-bg);
    overflow: hidden;
}

.why__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.14;
    z-index: 0;
}

.why .wrap {
    position: relative;
    z-index: 1;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.why-card {
    background: rgba(20, 26, 38, 0.7);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    padding: 40px 34px;
    transition: transform var(--t-base) var(--ease),
                border-color var(--t-base) var(--ease),
                background var(--t-base) var(--ease);
}

.why-card:hover {
    transform: translateY(-6px);
    border-color: var(--c-primary);
    background: rgba(20, 26, 38, 0.95);
}

.why-card img {
    width: 52px;
    height: 52px;
    margin-bottom: 22px;
    /* SVG 아이콘을 블루 톤으로 보정 */
    filter: brightness(0) saturate(100%) invert(52%) sepia(72%)
            saturate(2400%) hue-rotate(200deg) brightness(101%) contrast(101%);
}

.why-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.why-card p {
    font-size: 15px;
    color: var(--c-text-sub);
}

/* -------------------------------------------------------------------------
 * CTA
 * ------------------------------------------------------------------------- */
.cta {
    padding: 110px 0;
    background:
        radial-gradient(circle at 70% 30%, rgba(47, 123, 255, 0.22), transparent 55%),
        linear-gradient(180deg, var(--c-bg-2), var(--c-bg));
    border-top: 1px solid var(--c-line);
}

.cta__inner {
    text-align: center;
}

.cta__inner h2 {
    font-size: 42px;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.25;
}

.cta__inner p {
    margin: 20px 0 40px;
    font-size: 18px;
    color: var(--c-text-sub);
}

.cta__actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* -------------------------------------------------------------------------
 * 영상 모달
 * ------------------------------------------------------------------------- */
.video-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(5, 7, 11, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--t-base) var(--ease),
                visibility var(--t-base);
}

.video-modal.open {
    opacity: 1;
    visibility: visible;
}

.video-modal__inner {
    position: relative;
    width: 100%;
    max-width: 960px;
}

.video-modal__frame {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
}

.video-modal__frame iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.video-modal__close {
    position: absolute;
    top: -52px;
    right: 0;
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    border: 1px solid var(--c-line-strong);
    border-radius: 50%;
    transition: all var(--t-fast) var(--ease);
}

.video-modal__close:hover {
    background: var(--c-primary);
    border-color: var(--c-primary);
    transform: rotate(90deg);
}

/* -------------------------------------------------------------------------
 * 반응형
 * ------------------------------------------------------------------------- */
@media (max-width: 1080px) {
    .hero__title { font-size: 56px; }

    .hero__counter { left: 24px; }

    .hero__counter .bar { height: 180px; }

    @keyframes counterMove {
        0% { transform: translateY(-100%); }
        100% { transform: translateY(180px); }
    }

    .intro__inner { grid-template-columns: 1fr; gap: 48px; }

    .sol-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }

    .prod-grid { grid-template-columns: repeat(2, 1fr); }

    .why-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .hero { min-height: 600px; }

    .hero__title { font-size: 40px; }

    .hero__lead { font-size: 16px; }

    .hero__lead br { display: none; }

    .hero__overlay {
        background: linear-gradient(180deg, rgba(10, 13, 20, 0.7) 0%, rgba(10, 13, 20, 0.85) 100%);
    }

    /* 모바일 : 세로 카운터 / 스크롤 텍스트 숨김, 버튼 축소 */
    .hero__counter { display: none; }

    .hero__scroll { right: 20px; bottom: 24px; }

    .hero__scroll em { display: none; }

    .hero__more { height: 60px; font-size: 15px; }

    .floating-btn {
        right: 20px;
        bottom: 20px;
        width: 52px;
        height: 52px;
        font-size: 16px;
    }

    .intro__stats { gap: 14px; }

    .stat { padding: 26px 22px; }

    .stat strong { font-size: 38px; }

    .sec-head--row { flex-direction: column; align-items: flex-start; }

    .cta__inner h2 { font-size: 30px; }
}

@media (max-width: 520px) {
    .prod-grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }

    .why-grid { grid-template-columns: 1fr; }

    .intro__stats { grid-template-columns: 1fr 1fr; }
}