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

body, html {
    height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow-x: hidden;
}

.container {
    position: relative;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: url('background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    text-align: center;
    overflow: hidden;
}

.background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.2) 0%,
        rgba(0, 0, 0, 0.4) 50%,
        rgba(0, 0, 0, 0.6) 100%
    );
    z-index: 1;
}

/* 시네마틱 비네팅 효과 - 부드럽게 */
.cinematic-vignette {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        ellipse at center,
        transparent 0%,
        transparent 50%,
        rgba(0, 0, 0, 0.2) 80%,
        rgba(0, 0, 0, 0.5) 100%
    );
    z-index: 2;
    pointer-events: none;
}

/* 스캔라인 효과 */
.scanlines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.05) 0px,
        transparent 1px,
        transparent 2px,
        rgba(0, 0, 0, 0.05) 3px
    );
    z-index: 2;
    pointer-events: none;
    opacity: 0.3;
}

/* 신성한 빛줄기 효과 */
.divine-light-rays {
    position: absolute;
    top: -50%;
    left: 50%;
    width: 200%;
    height: 200%;
    transform: translateX(-50%);
    background: 
        radial-gradient(ellipse at center top, 
            rgba(255, 215, 0, 0.15) 0%,
            rgba(255, 215, 0, 0.08) 30%,
            transparent 70%);
    animation: divineRays 8s ease-in-out infinite;
    z-index: 2;
    pointer-events: none;
}

@keyframes divineRays {
    0%, 100% {
        opacity: 0.4;
        transform: translateX(-50%) translateY(0) scale(1);
    }
    50% {
        opacity: 0.7;
        transform: translateX(-50%) translateY(-5%) scale(1.05);
    }
}

/* 신성한 파티클 효과 */
.divine-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, rgba(255, 215, 0, 0.6), transparent),
        radial-gradient(2px 2px at 60% 70%, rgba(255, 215, 0, 0.6), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(255, 255, 255, 0.8), transparent),
        radial-gradient(2px 2px at 80% 10%, rgba(255, 215, 0, 0.6), transparent),
        radial-gradient(1px 1px at 90% 60%, rgba(255, 255, 255, 0.8), transparent),
        radial-gradient(2px 2px at 30% 80%, rgba(255, 215, 0, 0.6), transparent),
        radial-gradient(1px 1px at 70% 40%, rgba(255, 255, 255, 0.8), transparent);
    background-size: 200% 200%;
    animation: particleFloat 15s ease-in-out infinite;
    z-index: 2;
    pointer-events: none;
}

@keyframes particleFloat {
    0%, 100% {
        opacity: 0.3;
        background-position: 0% 0%, 100% 100%, 50% 50%, 80% 20%, 90% 60%, 30% 80%, 70% 40%;
    }
    50% {
        opacity: 0.6;
        background-position: 100% 100%, 0% 0%, 60% 60%, 70% 30%, 80% 70%, 40% 70%, 60% 50%;
    }
}

.content {
    position: relative;
    z-index: 3;
    max-width: 1200px;
    padding: 40px 20px;
    backdrop-filter: blur(2px);
    background: rgba(0, 0, 0, 0.2);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.logo-section {
    margin-bottom: 40px;
    position: relative;
}

/* KARIOS - 실버 플래티넘 */
.main-title {
    font-size: 6rem;
    font-weight: 900;
    letter-spacing: 15px;
    margin-bottom: 20px;
    color: #F5F5F5;
    text-shadow: 
        0 0 20px rgba(255, 255, 255, 0.5),
        0 4px 8px rgba(0, 0, 0, 1),
        0 0 2px rgba(255, 255, 255, 0.8);
    animation: 
        titleEntranceFlash 4s ease-out 0.3s both;
    position: relative;
    z-index: 1;
}

/* 타이틀 언더라인 */
.title-underline {
    width: 500px;
    height: 3px;
    margin: 15px auto 25px;
    background: linear-gradient(
        to right,
        transparent 0%,
        rgba(255, 255, 255, 0.2) 10%,
        rgba(255, 255, 255, 0.6) 30%,
        rgba(255, 255, 255, 1) 50%,
        rgba(255, 255, 255, 0.6) 70%,
        rgba(255, 255, 255, 0.2) 90%,
        transparent 100%
    );
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
    animation: underlineGlow 3s ease-in-out infinite;
}

@keyframes underlineGlow {
    0%, 100% {
        opacity: 0.5;
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
    }
    50% {
        opacity: 1;
        box-shadow: 0 0 20px rgba(255, 255, 255, 0.6);
    }
}

@keyframes titleEntranceFlash {
    0% {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
        filter: blur(10px);
        text-shadow: 
            0 2px 4px rgba(0, 0, 0, 0.9),
            0 0 1px rgba(255, 255, 255, 0.8),
            0 -1px 1px rgba(200, 200, 220, 0.5);
    }
    30% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
        text-shadow: 
            0 0 30px rgba(255, 255, 255, 1),
            0 0 50px rgba(250, 250, 255, 1),
            0 0 70px rgba(240, 240, 255, 1),
            0 0 100px rgba(220, 220, 250, 0.9),
            0 0 140px rgba(200, 200, 240, 0.8),
            0 0 180px rgba(180, 180, 230, 0.6),
            0 3px 0 rgba(200, 200, 230, 1),
            0 -3px 0 rgba(255, 255, 255, 1),
            5px 5px 25px rgba(0, 0, 0, 1);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
        text-shadow: 
            0 2px 4px rgba(0, 0, 0, 0.9),
            0 0 1px rgba(255, 255, 255, 0.8),
            0 -1px 1px rgba(200, 200, 220, 0.5);
    }
}

.subtitle {
    font-size: 1.5rem;
    letter-spacing: 3px;
    color: #ffd700;
    text-shadow: 
        0 0 10px rgba(255, 215, 0, 0.8),
        2px 2px 8px rgba(0, 0, 0, 0.8);
    animation: subtitleEntrance 1s ease-out 0.7s both;
    font-weight: 300;
    text-transform: uppercase;
}

@keyframes subtitleEntrance {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.description {
    margin: 40px 0;
}

.description p {
    font-size: 1.8rem;
    line-height: 1.8;
    margin: 15px 0;
    color: #ffffff;
    text-shadow: 
        0 0 10px rgba(255, 255, 255, 0.5),
        2px 2px 10px rgba(0, 0, 0, 0.9);
    animation: descriptionEntrance 1s ease-out 1s both;
    font-weight: 300;
}

/* Coming Soon 래퍼 */
.coming-soon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

/* Coming Soon 장식 라인 */
.coming-soon-decoration {
    width: 80px;
    height: 1px;
    background: linear-gradient(
        to right,
        transparent 0%,
        rgba(255, 215, 0, 0.8) 50%,
        transparent 100%
    );
    animation: decorationPulse 5s ease-in-out infinite;
}

@keyframes decorationPulse {
    0%, 100% {
        opacity: 0.5;
        transform: scaleX(0.8);
    }
    50% {
        opacity: 1;
        transform: scaleX(1);
    }
}

@keyframes descriptionEntrance {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Coming Soon - 자연스러운 숨쉬기 */
.coming-soon {
    font-size: 2.5rem !important;
    font-weight: 900 !important;
    color: #FFD700 !important;
    margin: 0 !important;
    letter-spacing: 6px !important;
    text-shadow: 
        2px 2px 8px rgba(0, 0, 0, 0.8);
    animation: 
        comingSoonEntrance 1s ease-out 1.3s both,
        naturalBreathing 5s ease-in-out infinite 2.3s !important;
    display: inline-block !important;
    text-transform: uppercase;
    position: relative;
}

.coming-soon::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(
        to right,
        transparent 0%,
        rgba(255, 215, 0, 0.6) 50%,
        transparent 100%
    );
    animation: underlineShine 3s ease-in-out infinite;
}

@keyframes underlineShine {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 1;
    }
}

@keyframes comingSoonEntrance {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes naturalBreathing {
    0%, 100% {
        opacity: 0.8;
        transform: scale(0.98);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

.footer {
    margin-top: 60px;
}

.footer p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 1px;
    text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.8);
    animation: footerEntrance 1s ease-out 1.5s both;
}

@keyframes footerEntrance {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .main-title {
        font-size: 3.5rem;
        letter-spacing: 8px;
    }

    .subtitle {
        font-size: 1.2rem;
        letter-spacing: 2px;
    }

    .description p {
        font-size: 1.4rem;
    }

    .coming-soon {
        font-size: 1.8rem !important;
        letter-spacing: 3px !important;
    }

    .content {
        padding: 30px 15px;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 2.5rem;
        letter-spacing: 5px;
    }

    .subtitle {
        font-size: 1rem;
        letter-spacing: 1px;
    }

    .description p {
        font-size: 1.2rem;
    }

    .coming-soon {
        font-size: 1.5rem !important;
        letter-spacing: 2px !important;
    }
}

@media (max-width: 360px) {
    .main-title {
        font-size: 2rem;
        letter-spacing: 3px;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .description p {
        font-size: 1rem;
    }

    .coming-soon {
        font-size: 1.3rem !important;
    }
}

/* 가로 모드 최적화 */
@media (max-height: 600px) and (orientation: landscape) {
    .container {
        min-height: auto;
        padding: 20px 0;
    }

    .main-title {
        font-size: 3rem;
        margin-bottom: 10px;
    }

    .subtitle {
        font-size: 1rem;
    }

    .description {
        margin: 20px 0;
    }

    .description p {
        font-size: 1.2rem;
        margin: 10px 0;
    }

    .coming-soon {
        font-size: 1.5rem !important;
        margin-top: 20px !important;
    }

    .footer {
        margin-top: 20px;
    }
}