@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700&family=Outfit:wght@300;400;600;800&display=swap');

/* ==========================================
   CSS 전역 변수 및 테마 정의
   ========================================== */
:root {
    /* 아르테미스 테마 (기본 밤/다크 모드) */
    --bg-color: #0d1117;
    --bg-gradient: linear-gradient(135deg, #0d1117 0%, #161b22 100%);
    --card-bg: rgba(22, 27, 34, 0.8);
    --card-border: rgba(212, 175, 55, 0.15);
    --text-color: #f0f6fc;
    --text-muted: #8b949e;
    --primary-color: #d4af37; /* 클래식 황금색 */
    --primary-glow: rgba(212, 175, 55, 0.4);
    --accent-color: #58a6ff; /* 밤빛 파란색 */
    --accent-glow: rgba(88, 166, 255, 0.3);
    --overlay-bg: rgba(13, 17, 23, 0.95);
    --shadow-color: rgba(0, 0, 0, 0.6);
    --font-heading: 'Outfit', 'Noto Sans KR', sans-serif;
    --font-body: 'Noto Sans KR', sans-serif;
}

/* 아폴론 테마 (낮/라이트 모드) */
body.theme-apollon {
    --bg-color: #f7f4eb;
    --bg-gradient: linear-gradient(135deg, #f7f4eb 0%, #e8e3d3 100%);
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-border: rgba(184, 134, 11, 0.25);
    --text-color: #212529;
    --text-muted: #6c757d;
    --primary-color: #b8860b; /* 다크 골드 */
    --primary-glow: rgba(184, 134, 11, 0.3);
    --accent-color: #e65c00; /* 아침 태양의 오렌지 */
    --accent-glow: rgba(230, 92, 0, 0.2);
    --overlay-bg: rgba(247, 244, 235, 0.96);
    --shadow-color: rgba(0, 0, 0, 0.15);
}

/* ==========================================
   기본 리셋 스타일
   ========================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--bg-color);
}

/* 스크롤바 커스텀 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #e5c158;
}

body {
    background: var(--bg-gradient);
    color: var(--text-color);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background 0.5s ease, color 0.5s ease;
}

/* ==========================================
   레이아웃 컨테이너 및 헤더 스타일
   ========================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    padding: 0 320px; /* 좌우 가드 패딩을 주어 타이틀이 버튼 영역을 침범하지 못하도록 격리 */
}

header h1 {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--primary-color);
    text-shadow: 0 0 10px var(--primary-glow);
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.1rem;
    color: var(--text-muted);
    font-weight: 300;
}

/* 헤더 우측 상단 컨트롤러 그룹 */
.header-controls {
    position: absolute;
    top: 0.5rem;
    right: 0;
    display: flex;
    gap: 0.75rem;
}

/* 테마 수동 변경 및 업데이트 예정 버튼 공통 */
.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    white-space: nowrap; /* 텍스트 줄바꿈 방지 */
}
.theme-toggle-btn:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    box-shadow: 0 0 10px var(--primary-glow);
}

/* 반응형 헤더 (메인 텍스트 가림 방지 분기점 상향 조정) */
@media (max-width: 1150px) {
    header {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        padding: 0;
    }
    .header-controls {
        position: relative;
        top: auto;
        right: auto;
        margin-top: 0.5rem;
        justify-content: center;
    }
}

/* ==========================================
   글로벌 공통 컴포넌트
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.btn:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    box-shadow: 0 0 15px var(--primary-glow);
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--primary-color);
    color: var(--bg-color);
}
.btn-primary:hover {
    background: transparent;
    color: var(--primary-color);
}

/* 카드 및 글래스모피즘 효과 */
.glass-panel {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 8px;
    box-shadow: 0 8px 32px 0 var(--shadow-color);
    transition: all 0.3s ease;
}

/* ==========================================
   유틸리티 클래스
   ========================================== */
.text-center { text-align: center; }
.hidden { display: none !important; }

/* ==========================================
   올림포스 신전 문 인트로 게이트 (Intro Gate)
   ========================================== */
.intro-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999; /* 최상위 웰컴 레이어 */
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #080c10;
    perspective: 1500px; /* 3D 효과 깊이감 */
}

/* 좌우 청동 신전 문 */
.door {
    position: absolute;
    top: 0;
    width: 50vw;
    height: 100vh;
    background-color: #11161d;
    /* 고대 그리스 청동 및 석조 질감 텍스처 */
    background-image: 
        linear-gradient(to right, rgba(0,0,0,0.85) 0%, transparent 15%, transparent 85%, rgba(0,0,0,0.85) 100%),
        radial-gradient(circle at center, rgba(212,175,55,0.06) 0%, transparent 70%),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60" viewBox="0 0 60 60"><path d="M0 0h60v60H0z" fill="none"/><path d="M10 10h40v40H10z" fill="none" stroke="%23d4af37" stroke-width="1" stroke-opacity="0.1"/><circle cx="30" cy="30" r="10" fill="none" stroke="%23d4af37" stroke-width="1" stroke-opacity="0.1"/></svg>');
    background-size: auto, auto, 60px 60px;
    border: 8px solid rgba(212, 175, 55, 0.15);
    box-shadow: inset 0 0 80px rgba(0, 0, 0, 0.95);
    transition: transform 1.8s cubic-bezier(0.77, 0, 0.175, 1);
    z-index: 1;
}

.door-left {
    left: 0;
    transform-origin: left center;
    border-right: 4px solid rgba(212, 175, 55, 0.4);
}

.door-right {
    right: 0;
    transform-origin: right center;
    border-left: 4px solid rgba(212, 175, 55, 0.4);
}

/* 문 개방 시 3D 회전 효과 */
.intro-overlay.opened .door-left {
    transform: rotateY(-110deg);
}

.intro-overlay.opened .door-right {
    transform: rotateY(110deg);
}

/* 인트로 텍스트 콘텐츠 박스 */
.intro-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2.5rem;
    max-width: 650px;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.intro-overlay.opened .intro-content {
    opacity: 0;
    transform: scale(0.9) translateY(-30px);
    pointer-events: none;
}

.intro-title {
    font-family: 'Outfit', 'Noto Sans KR', sans-serif;
    font-size: 3.2rem;
    font-weight: 800;
    color: #d4af37;
    letter-spacing: 0.2em;
    text-shadow: 0 0 15px rgba(212, 175, 55, 0.35), 0 4px 12px rgba(0,0,0,0.6);
    margin-bottom: 1rem;
    animation: textPulse 3s infinite ease-in-out;
}

@keyframes textPulse {
    0%, 100% { text-shadow: 0 0 15px rgba(212, 175, 55, 0.3); }
    50% { text-shadow: 0 0 35px rgba(212, 175, 55, 0.6), 0 0 15px #d4af37; }
}

.intro-tagline {
    font-size: 0.95rem;
    color: #8b949e;
    letter-spacing: 0.08em;
    margin-bottom: 3rem;
    line-height: 1.7;
}

/* 웰컴 입장 버튼 */
.enter-btn {
    background: linear-gradient(135deg, #d4af37 0%, #a27e16 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1.1rem 2.8rem;
    border-radius: 50px;
    color: #0d1117;
    font-family: 'Outfit', sans-serif;
    font-size: 1.05rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.25), inset 0 2px 4px rgba(255,255,255,0.4);
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.enter-btn:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 18px 35px rgba(212, 175, 55, 0.45), 0 0 18px rgba(212, 175, 55, 0.6);
    background: linear-gradient(135deg, #ffe066 0%, #d4af37 100%);
}

.enter-btn:active {
    transform: translateY(-1px);
}

.enter-btn-icon {
    font-size: 1.25rem;
    animation: lightningFlicker 2s infinite;
}

@keyframes lightningFlicker {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.25) rotate(15deg); }
}

/* 눈 부신 라이트 플레어 */
.light-flare {
    position: absolute;
    width: 250vmax;
    height: 250vmax;
    background: radial-gradient(circle, rgba(255,232,130,0.85) 0%, rgba(212,175,55,0.12) 45%, transparent 75%);
    border-radius: 50%;
    z-index: 3;
    opacity: 0;
    pointer-events: none;
    transform: scale(0.05);
    transition: opacity 1.1s ease, transform 1.6s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.intro-overlay.opened .light-flare {
    opacity: 1;
    transform: scale(1);
}