/* ==========================================================================
   몽실이 AI 상담사 - 디자인 시스템 & 공통 스타일시트 (style.css)
   ========================================================================== */

/* 1. 디자인 시스템 토큰 정의 */
:root {
    --font-primary: 'Noto Sans KR', sans-serif;
    --font-english: 'Outfit', sans-serif;
    
    /* 테마 색상 (화이트, 네이비, 하늘색, 연한 회색) */
    --color-bg-light: #F4F6F9;
    --color-card-bg: #FFFFFF;
    --color-primary: #0E4A84;       /* 네이비 */
    --color-primary-light: #155E9E; /* 밝은 네이비 */
    --color-accent-sky: #4AA3DF;    /* 하늘색 */
    --color-bg-sky-light: #E2EFF9;  /* 연한 하늘색 */
    --color-gray-dark: #2C3E50;     /* 텍스트 메인 */
    --color-gray-light: #7F8C8D;    /* 텍스트 서브 */
    --color-border: #E5E9F0;
    
    /* 둥근 카드 디자인 및 그림자 */
    --radius-card: 20px;
    --radius-inner: 12px;
    --shadow-premium: 0 10px 30px rgba(14, 74, 132, 0.08);
    --shadow-hover: 0 15px 35px rgba(14, 74, 132, 0.15);
    
    /* 애니메이션 트랜지션 */
    --transition-smooth: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-fast: 0.15s ease;
}

/* 2. 전역 스타일 및 리셋 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--color-bg-light);
    color: var(--color-gray-dark);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 16px;
}

/* 반응형 모바일 우선 쉘 (PC/모바일 공용 뷰포트) */
.app-container {
    width: 100%;
    max-width: 540px; /* 프리미엄 모바일/태블릿 규격 */
    height: 92vh;
    min-height: 640px;
    background-color: var(--color-card-bg);
    border-radius: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.7);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* 3. 헤더 영역 스타일 */
.app-header {
    height: 64px;
    padding: 0 24px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.header-logo {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.brand-name {
    font-family: var(--font-english);
    font-size: 22px;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.sub-brand {
    font-size: 11px;
    font-weight: 700;
    color: var(--color-accent-sky);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-link-btn {
    text-decoration: none;
    background-color: var(--color-bg-light);
    color: var(--color-gray-dark);
    padding: 8px 12px;
    border-radius: var(--radius-inner);
    font-size: 13px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.admin-link-btn:hover {
    background-color: var(--color-bg-sky-light);
    color: var(--color-primary);
}

.header-icon {
    width: 15px;
    height: 15px;
}

/* 4. 메인 콘텐츠 스크롤 영역 */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* 스크롤바 커스텀 */
.main-content::-webkit-scrollbar {
    width: 6px;
}
.main-content::-webkit-scrollbar-track {
    background: transparent;
}
.main-content::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.08);
    border-radius: 3px;
}

/* 5. 히어로 캐릭터 섹션 */
.hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-top: 16px;
}

.character-container {
    position: relative;
    width: 140px;
    height: 140px;
    margin-bottom: 20px;
}

.mongsil-character {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--color-bg-sky-light);
    background-color: var(--color-bg-light);
    box-shadow: var(--shadow-premium);
    position: relative;
    z-index: 5;
    transition: transform var(--transition-smooth);
}

.character-container:hover .mongsil-character {
    transform: scale(1.06) rotate(2deg);
}

/* 캐릭터 파동 링 애니메이션 */
.pulse-ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 140px;
    height: 140px;
    border: 2px solid var(--color-accent-sky);
    border-radius: 50%;
    opacity: 0;
    z-index: 1;
    animation: pulse 2.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.5; }
    50% { opacity: 0.3; }
    100% { transform: scale(1.25); opacity: 0; }
}

.greeting-box {
    margin-bottom: 24px;
}

.greeting-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.greeting-subtitle {
    font-size: 15px;
    color: var(--color-gray-light);
    font-weight: 500;
}

/* 메인 대형 통화 시작 단추 */
.cta-btn-primary {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    width: 100%;
    max-width: 280px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    text-decoration: none;
    padding: 16px 28px;
    border-radius: var(--radius-card);
    font-size: 16px;
    font-weight: 700;
    box-shadow: 0 8px 20px rgba(14, 74, 132, 0.25);
    transition: all var(--transition-smooth);
    border: none;
    cursor: pointer;
}

.cta-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(14, 74, 132, 0.35);
}

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

.cta-icon {
    width: 20px;
    height: 20px;
}

/* 6. 빠른 메뉴 카드 그리드 */
.menu-section {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.section-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-gray-light);
    letter-spacing: 0.5px;
    padding-left: 4px;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.menu-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-premium);
}

.menu-card:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: var(--color-accent-sky);
    box-shadow: var(--shadow-hover);
}

.card-icon-wrapper {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-icon-wrapper svg {
    width: 22px;
    height: 22px;
}

/* 카드 테마별 아이콘 컬러 설정 */
.ice-theme { background-color: #E6F7FF; color: #1890FF; }
.warm-theme { background-color: #FFF7E6; color: #FA8C16; }
.luxury-theme { background-color: #FFF0F6; color: #EB2F96; }
.curtain-theme { background-color: #F9F0FF; color: #722ED1; }
.voucher-theme { background-color: #F6FFED; color: #52C41A; }
.reserve-theme { background-color: var(--color-bg-sky-light); color: var(--color-primary); }

.card-details h3 {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-gray-dark);
    margin-bottom: 2px;
}

.card-details p {
    font-size: 11px;
    color: var(--color-gray-light);
    line-height: 1.3;
}

/* 7. 푸터 영역 스타일 */
.app-footer {
    height: 48px;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--color-bg-light);
}

.app-footer p {
    font-size: 11px;
    color: var(--color-gray-light);
}

/* 8. 반응형 크기 최적화 */
@media (max-width: 480px) {
    body {
        padding: 0;
    }
    .app-container {
        height: 100vh;
        border-radius: 0;
        border: none;
    }
    .menu-grid {
        grid-template-columns: 1fr; /* 모바일에서는 1열로 나열 */
    }
    .greeting-title {
        font-size: 24px;
    }
}