/* --- 변수 설정 (브랜드 컬러 팔레트) --- */
:root {
    --mint: #88D4AB;
    --yellow: #FCE38A;
    --peach: #F38181;
    --lavender: #C8B6E2;
    --skyblue: #95E1D3;
    --black: #111111;
    --white: #FFFFFF;
    --gray: #F0F0F0;
}

/* --- 기본 리셋 및 폰트 --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Jua', sans-serif;
    color: var(--black);
    background-color: var(--white);
    line-height: 1.6;
}

/* --- 유틸리티 클래스 --- */
.bg-yellow { background-color: var(--yellow); }
.bg-lavender { background-color: var(--lavender); }
.bg-white { background-color: var(--white); }
.bg-mint { background-color: var(--mint); }

/* --- 헤더 및 네비게이션 --- */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    background-color: var(--lavender);
    border-bottom: 3px solid var(--black);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav a {
    text-decoration: none;
    color: var(--black);
    font-size: 1.1rem;
}

nav a:hover {
    color: var(--white);
    text-shadow: 1px 1px 0 var(--black);
}

/* --- 버튼 스타일 (스티커 팝아트 느낌) --- */
button {
    font-family: 'Jua', sans-serif;
    cursor: pointer;
    border: 3px solid var(--black);
    border-radius: 12px;
    box-shadow: 3px 3px 0px var(--black);
    transition: all 0.2s ease;
}

button:active {
    transform: translate(3px, 3px);
    box-shadow: 0px 0px 0px var(--black);
}

.login-btn {
    background-color: var(--yellow);
    padding: 8px 16px;
    font-size: 1rem;
}

.cta-btn {
    background-color: var(--mint);
    padding: 15px 30px;
    font-size: 1.3rem;
    margin-top: 20px;
}

.sub-btn {
    background-color: var(--peach);
    padding: 10px 20px;
    font-size: 1.1rem;
    margin-top: 15px;
}

/* --- 섹션 공통 --- */
section {
    padding: 60px 5%;
    text-align: center;
    border-bottom: 3px solid var(--black);
}

.section-title {
    font-size: 2rem;
    margin-bottom: 30px;
}

/* --- 카드 디자인 (다이컷 스티커 컨셉) --- */
.card {
    background-color: var(--white);
    border: 3px solid var(--black);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 5px 5px 0px var(--black);
    margin: 0 auto;
    text-align: left;
}

.today-card {
    max-width: 600px;
}

.expert-text {
    font-size: 1.1rem;
    margin: 15px 0;
}

.tag {
    display: inline-block;
    background-color: var(--gray);
    border: 2px solid var(--black);
    border-radius: 10px;
    padding: 5px 10px;
    margin-right: 10px;
    font-size: 0.9rem;
}

/* --- 그리드 레이아웃 (서비스 & 플레이그라운드) --- */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.card-skyblue { background-color: var(--skyblue); }
.card-peach { background-color: var(--peach); }
.card-mint { background-color: var(--mint); }

.action-card {
    text-align: center;
    transition: transform 0.3s;
}

.action-card:hover {
    transform: translateY(-5px);
}

/* --- 푸터 --- */
footer {
    text-align: center;
    padding: 30px;
    background-color: var(--gray);
    font-size: 0.9rem;
}

/* --- 모달 (팝업) 스타일 --- */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 200;
}

.modal-content {
    background-color: var(--white);
    margin: 15% auto;
    padding: 40px;
    border: 3px solid var(--black);
    border-radius: 20px;
    width: 300px;
    text-align: center;
    box-shadow: 8px 8px 0px var(--black);
    position: relative;
}

.close-btn {
    position: absolute;
    top: 10px; right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
}

.kakao-btn {
    background-color: #FEE500;
    width: 100%;
    padding: 12px;
    margin-top: 20px;
    font-size: 1.1rem;
}