/* assets/css/style.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    --bg-main: #F8FAFC; /* 매우 맑고 밝은 슬레이트 화이트 */
    --bg-card: rgba(255, 255, 255, 0.85); /* 투명도가 가미된 맑은 화이트 글래스 */
    --bg-card-hover: #FFFFFF;
    --border-glass: rgba(0, 0, 0, 0.05);
    --border-glass-active: rgba(139, 92, 246, 0.25);
    
    --primary: #7C3AED; /* 선명하고 고급스러운 바이올렛 */
    --primary-glow: rgba(124, 58, 237, 0.15);
    --secondary: #0891B2; /* 청량한 맑은 사이언 블루 */
    --secondary-glow: rgba(8, 145, 178, 0.15);
    
    --text-primary: #1E293B; /* 짙은 차콜 슬레이트 그레이 (가독성 최상) */
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    
    --success: #059669;
    --success-glow: rgba(5, 150, 105, 0.15);
    
    --font-outfit: 'Outfit', 'Inter', -apple-system, sans-serif;
    --font-inter: 'Inter', -apple-system, sans-serif;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset 및 기본 스타일 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-inter);
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(124, 58, 237, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(8, 145, 178, 0.04) 0%, transparent 45%);
    background-attachment: fixed;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    outline: none;
}

/* 컨테이너 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 헤더 & 네비게이션 */
header {
    padding: 18px 0;
    border-bottom: 1px solid var(--border-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(248, 250, 252, 0.8);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-outfit);
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span {
    color: var(--secondary);
    -webkit-text-fill-color: var(--secondary);
}

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-link {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--primary);
}

.btn-admin {
    padding: 8px 18px;
    border-radius: 99px;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    transition: var(--transition-smooth);
    background: rgba(255, 255, 255, 0.6);
}

.btn-admin:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #FFF;
    box-shadow: 0 4px 12px var(--primary-glow);
}

/* 히어로 섹션 */
.hero-section {
    padding: 70px 0 50px 0;
    text-align: center;
    position: relative;
}

.hero-tag {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 99px;
    background: rgba(124, 58, 237, 0.08);
    border: 1px solid rgba(124, 58, 237, 0.15);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 0.3px;
}

.hero-title {
    font-family: var(--font-outfit);
    font-size: 44px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 36px auto;
}

/* 글로벌 리퍼럴 박스 */
.global-referral-box {
    max-width: 580px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(124, 58, 237, 0.15);
    border-radius: 20px;
    padding: 24px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.05);
}

.referral-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.referral-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 600;
}

.coupon-badge-wrapper {
    display: flex;
    align-items: center;
    background: #FFF;
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 4px 4px 4px 12px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

.coupon-val {
    font-family: var(--font-outfit);
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
    margin-right: 12px;
}

.btn-copy {
    background: var(--primary);
    color: #FFF;
    font-size: 12px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 8px;
    transition: var(--transition-smooth);
}

.btn-copy:hover {
    background: #6D28D9;
    box-shadow: 0 4px 10px var(--primary-glow);
}

.btn-primary-link {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    background: linear-gradient(90deg, var(--primary) 0%, #6D28D9 50%, var(--secondary) 100%);
    color: #FFF;
    padding: 16px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 16px;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 18px rgba(124, 58, 237, 0.25);
}

.btn-primary-link:hover {
    transform: translateY(-1.5px);
    box-shadow: 0 6px 22px rgba(124, 58, 237, 0.35);
}

/* 쿠폰 섹션 */
.coupon-section {
    padding: 50px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 44px;
}

.section-title {
    font-family: var(--font-outfit);
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-desc {
    color: var(--text-secondary);
    font-size: 15px;
}

.coupon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.coupon-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    padding: 28px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.02);
}

.coupon-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transform: translateX(-100%);
    transition: var(--transition-smooth);
}

.coupon-card:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    border-color: var(--primary);
    box-shadow: 0 15px 35px rgba(124, 58, 237, 0.06), 0 2px 10px rgba(0, 0, 0, 0.01);
}

.coupon-card:hover::before {
    transform: translateX(100%);
    transition: all 0.8s ease-in-out;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}

.service-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.service-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: #FFF;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-glass);
    box-shadow: 0 2px 6px rgba(0,0,0,0.02);
}

.service-name {
    font-family: var(--font-outfit);
    font-size: 17px;
    font-weight: 800;
    color: var(--text-primary);
}

.discount-tag {
    padding: 6px 12px;
    border-radius: 99px;
    font-size: 11.5px;
    font-weight: 700;
}

.card-body {
    flex-grow: 1;
    margin-bottom: 24px;
}

.service-desc {
    font-size: 13.5px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.55;
}

.card-coupon-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #FFF;
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 10px 14px;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.01);
}

.card-coupon-lbl {
    font-size: 11.5px;
    color: var(--text-secondary);
    font-weight: 500;
}

.card-coupon-code {
    font-family: var(--font-outfit);
    font-size: 13.5px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.card-coupon-code:hover {
    color: #6D28D9;
}

.btn-card-action {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    background: #FFF;
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    padding: 12px;
    border-radius: 12px;
    font-size: 13.5px;
    font-weight: 700;
    transition: var(--transition-smooth);
    box-shadow: 0 2px 5px rgba(0,0,0,0.01);
}

.btn-card-action:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #FFF;
    box-shadow: 0 4px 12px var(--primary-glow);
}

/* 꿀팁 노하우 섹션 */
.knowhow-section {
    padding: 60px 0;
    background: rgba(124, 58, 237, 0.02);
    border-top: 1px solid var(--border-glass);
    border-bottom: 1px solid var(--border-glass);
}

.knowhow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.knowhow-card {
    background: #FFF;
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 28px;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(0,0,0,0.01);
}

.knowhow-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(124, 58, 237, 0.05);
    border-color: rgba(124, 58, 237, 0.2);
}

.knowhow-icon {
    font-size: 32px;
    margin-bottom: 16px;
    display: inline-block;
}

.knowhow-card h3 {
    font-family: var(--font-outfit);
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.knowhow-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 가이드 섹션 */
.guide-section {
    padding: 60px 0;
}

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 800px;
    margin: 0 auto;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 10px rgba(0,0,0,0.01);
}

.step-card:hover {
    border-color: rgba(124, 58, 237, 0.2);
    background: #FFF;
}

.step-num {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-outfit);
    font-weight: 800;
    font-size: 16px;
    color: #FFF;
    flex-shrink: 0;
}

.step-content h3 {
    font-family: var(--font-outfit);
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.step-content p {
    font-size: 13.5px;
    color: var(--text-secondary);
}

/* FAQ 섹션 (아코디언) */
.faq-section {
    padding: 60px 0 80px 0;
    background: rgba(8, 145, 178, 0.01);
}

.faq-wrapper {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 10px rgba(0,0,0,0.01);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 15.5px;
    font-weight: 700;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.4);
}

.faq-icon {
    font-size: 16px;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: rgba(255, 255, 255, 0.5);
}

.faq-answer-inner {
    padding: 20px 24px;
    font-size: 13.5px;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-glass);
    line-height: 1.65;
}

/* 아코디언 열림 상태 */
.faq-item.active {
    border-color: var(--primary);
    background: #FFF;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--primary);
}

/* 푸터 */
footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-glass);
    background: #F1F5F9;
    color: var(--text-secondary);
    font-size: 13px;
    text-align: center;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-sns {
    display: flex;
    gap: 16px;
}

.sns-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #FFF;
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.sns-link:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(124, 58, 237, 0.05);
}

.footer-desc {
    max-width: 700px;
    line-height: 1.6;
}

/* 토스트 알림 */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: #059669;
    color: white;
    padding: 12px 28px;
    border-radius: 99px;
    font-weight: 700;
    font-size: 14px;
    z-index: 1000;
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 25px rgba(5, 150, 105, 0.2);
    display: flex;
    align-items: center;
    gap: 8px;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* 반응형 미디어 쿼리 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 34px;
    }
    
    .hero-desc {
        font-size: 15px;
    }
    
    .coupon-grid {
        grid-template-columns: 1fr;
    }
    
    .step-card {
        flex-direction: column;
        gap: 12px;
    }
    
    .header-inner {
        flex-direction: column;
        gap: 16px;
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
    }
}