/* ==========================================
   크놀 뮤직 - 메인 스타일시트
   화이트 테마로 깔끔하고 전문적인 디자인
   ========================================== */

/* 기본 설정 */
:root {
    /* 메인 컬러 팔레트 - 블랙/블루 테마 */
    --primary-color: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #4A90E2;
    --secondary-color: #00A8FF;
    
    /* 배경 컬러 - 화이트 테마 */
    --bg-black: #FFFFFF;
    --bg-dark: #F8F9FA;
    --bg-darker: #F0F2F5;
    --bg-card: #FFFFFF;
    --bg-blue-gradient: linear-gradient(135deg, #0066FF 0%, #00A8FF 100%);
    --bg-dark-gradient: linear-gradient(135deg, #0A0A0A 0%, #1A1A1A 100%);
    
    /* 텍스트 컬러 */
    --text-white: #212529;
    --text-light: #495057;
    --text-gray: #6C757D;
    --text-dark-gray: #ADB5BD;
    --text-blue: #0066FF;
    
    /* 기타 컬러 */
    --border-color: #DEE2E6;
    --border-blue: rgba(0, 102, 255, 0.3);
    --shadow-dark: rgba(0, 0, 0, 0.5);
    --shadow-blue: rgba(0, 102, 255, 0.3);
    --shadow-blue-intense: rgba(0, 102, 255, 0.5);
    
    /* 타이포그래피 */
    --font-main: 'Noto Sans KR', sans-serif;
    
    /* 간격 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* 기타 */
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    color: var(--text-light);
    background-color: #FFFFFF;
    line-height: 1.7;
    overflow-x: hidden;
}

/* 컨테이너 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================
   헤더 & 네비게이션
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
    gap: 2rem;
}

.header-auth {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-header-login,
.btn-header-signup {
    padding: 10px 25px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-header-login {
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-header-login:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
}

.btn-header-signup {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0052cc 100%);
    color: #212529;
    border: none;
}

.btn-header-signup:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 102, 255, 0.3);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    cursor: pointer;
    text-decoration: none;
}

.logo i {
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1rem;
    align-items: center;
}

.nav-menu li {
    display: flex;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-menu a i {
    font-size: 0.9rem;
    opacity: 0.8;
}

.nav-menu a:hover {
    color: #212529;
    background: rgba(255, 255, 255, 0.1);
}

.nav-menu a:hover i {
    opacity: 1;
    transform: scale(1.1);
}

/* 대시보드 메뉴 스타일 */
.nav-dashboard {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(118, 75, 162, 0.15) 100%) !important;
    border: 1px solid rgba(102, 126, 234, 0.3);
    font-weight: 600 !important;
}

.nav-dashboard:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.25) 0%, rgba(118, 75, 162, 0.25) 100%) !important;
    border-color: rgba(102, 126, 234, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.nav-dashboard i {
    color: #667eea;
}

/* 로그인 버튼 분리 */
.nav-menu .login-item {
    margin-left: auto;
}

.nav-menu .profile-item {
    margin-left: auto;
}

/* ==========================================
   간결한 프로필 드롭다운 (개선됨)
   ========================================== */
.user-profile-compact {
    position: relative;
}

.profile-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 25px;
    padding: 0.4rem 1rem 0.4rem 0.4rem;
    color: #212529;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.profile-btn:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3) 0%, rgba(118, 75, 162, 0.3) 100%);
    border-color: rgba(102, 126, 234, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.profile-avatar {
    position: relative;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: #212529;
}

.profile-status {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    background: #00ff88;
    border-radius: 50%;
    border: 2px solid var(--bg-dark);
}

.profile-info {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    text-align: left;
    min-width: 80px;
}

.profile-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: #212529;
    line-height: 1.2;
}

.profile-id {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1;
}

.profile-btn i.fa-chevron-down {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.6);
    transition: transform 0.3s ease;
    margin-left: 0.2rem;
}

.profile-btn:hover i.fa-chevron-down {
    transform: rotate(180deg);
}

.profile-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: rgba(30, 30, 50, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    min-width: 260px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    backdrop-filter: blur(20px);
    overflow: hidden;
}

.profile-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.dropdown-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #212529;
}

.dropdown-info {
    flex: 1;
}

.dropdown-name {
    font-size: 1rem;
    font-weight: 600;
    color: #212529;
    margin: 0 0 0.2rem 0;
}

.dropdown-role {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.dropdown-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.9rem 1.5rem;
    color: #212529;
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.dropdown-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.dropdown-item i {
    width: 20px;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
}

.dropdown-item:hover i {
    color: #667eea;
}

.btn-login {
    padding: 0.6rem 1.5rem !important;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    border-radius: 25px !important;
    color: #212529 !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3) !important;
    border: none !important;
}

.btn-login:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5) !important;
}

.btn-login i {
    opacity: 1 !important;
}

/* 기존 스타일 (하위 호환성) */
.user-profile-dropdown-new {
    position: relative;
}

.profile-trigger-new {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.15) 0%, rgba(0, 168, 255, 0.15) 100%);
    border: 2px solid rgba(0, 102, 255, 0.3);
    border-radius: 50px;
    padding: 0.5rem 1.2rem 0.5rem 0.5rem;
    color: var(--text-white);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    font-size: 0.95rem;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(0, 102, 255, 0.2);
}

.profile-trigger-new:hover {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.25) 0%, rgba(0, 168, 255, 0.25) 100%);
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 102, 255, 0.4);
}

.profile-trigger-avatar {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-blue-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #212529;
    box-shadow: 0 3px 10px rgba(0, 102, 255, 0.3);
}

.profile-trigger-status {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 10px;
    height: 10px;
    background: #00FF88;
    border-radius: 50%;
    border: 2px solid var(--bg-card);
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.7);
    }
    50% {
        box-shadow: 0 0 0 4px rgba(0, 255, 136, 0);
    }
}

.profile-trigger-info {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    text-align: left;
}

.profile-trigger-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: #212529;
    line-height: 1.2;
}

.profile-trigger-role {
    font-size: 0.7rem;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.profile-trigger-arrow {
    font-size: 0.7rem;
    color: var(--text-gray);
    transition: transform 0.3s ease;
    margin-left: 0.3rem;
}

.profile-trigger-new:hover .profile-trigger-arrow {
    transform: rotate(180deg);
}

.profile-dropdown-menu-new {
    position: absolute;
    top: calc(100% + 15px);
    right: 0;
    background: var(--bg-card);
    border: 2px solid rgba(0, 102, 255, 0.3);
    border-radius: 20px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(0, 102, 255, 0.1);
    min-width: 320px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px) scale(0.95);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
    backdrop-filter: blur(20px);
    overflow: hidden;
}

.profile-dropdown-menu-new::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 168, 255, 0.05) 100%);
    pointer-events: none;
}

.profile-dropdown-menu-new.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.profile-dropdown-header {
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    position: relative;
}

.profile-dropdown-avatar {
    position: relative;
    width: 65px;
    height: 65px;
    border-radius: 50%;
    background: var(--bg-blue-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #212529;
    box-shadow: 0 8px 25px rgba(0, 102, 255, 0.4);
    flex-shrink: 0;
}

.profile-avatar-badge {
    position: absolute;
    bottom: -3px;
    right: -3px;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--bg-card);
    box-shadow: 0 3px 10px rgba(255, 215, 0, 0.4);
}

.profile-avatar-badge i {
    font-size: 0.7rem;
    color: #3C1E1E;
}

.profile-dropdown-info {
    flex: 1;
}

.profile-dropdown-name {
    font-weight: 700;
    color: #212529;
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
    line-height: 1.2;
}

.profile-dropdown-id {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 500;
}

.profile-dropdown-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--border-color) 50%, transparent 100%);
    margin: 0 1rem;
}

.profile-dropdown-menu-items {
    padding: 1rem;
}

.profile-dropdown-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.2rem;
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 12px;
    margin-bottom: 0.5rem;
    position: relative;
    overflow: hidden;
}

.profile-dropdown-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 168, 255, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.profile-dropdown-item:hover::before {
    opacity: 1;
}

.profile-dropdown-item:hover {
    transform: translateX(5px);
}

.profile-dropdown-item.logout:hover::before {
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.1) 0%, rgba(255, 69, 0, 0.1) 100%);
}

.profile-item-icon {
    width: 45px;
    height: 45px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.profile-item-icon.dashboard {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.2) 0%, rgba(0, 168, 255, 0.2) 100%);
    color: var(--primary-color);
}

.profile-item-icon.logout {
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.2) 0%, rgba(255, 69, 0, 0.2) 100%);
    color: #FF4444;
}

.profile-item-content {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    flex: 1;
    position: relative;
    z-index: 1;
}

.profile-item-title {
    font-size: 1rem;
    font-weight: 600;
    color: #212529;
    line-height: 1.2;
}

.profile-item-subtitle {
    font-size: 0.8rem;
    color: var(--text-gray);
    line-height: 1.2;
}

.profile-item-arrow {
    font-size: 0.9rem;
    color: var(--text-dark-gray);
    transition: transform 0.3s ease;
    position: relative;
    z-index: 1;
}

.profile-dropdown-item:hover .profile-item-arrow {
    transform: translateX(5px);
    color: var(--primary-color);
}

.profile-dropdown-item.logout:hover .profile-item-arrow {
    color: #FF4444;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* ==========================================
   히어로 섹션
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #FFFFFF 0%, #F0F8FF 50%, #E6F3FF 100%);
    padding-top: 80px;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
    pointer-events: none;
}

/* 둥둥 떠다니는 다채로운 동그라미 */
.floating-circles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.circle-symbol {
    position: absolute;
    border-radius: 50%;
    opacity: 0.6;
    animation: float-around 20s infinite ease-in-out;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* 플로팅 동그라미 3개 버전 */
.circle-red {
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, #FF6B6B 0%, #EE5A6F 100%);
    top: 10%;
    left: 10%;
    animation-duration: 20s;
}

.circle-blue {
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, #4ECDC4 0%, #44A08D 100%);
    top: 15%;
    right: 10%;
    animation-duration: 25s;
    animation-delay: -5s;
}

.circle-purple {
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, #A28FFF 0%, #8860D0 100%);
    bottom: 15%;
    left: 50%;
    animation-duration: 22s;
    animation-delay: -8s;
}

@keyframes float-around {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg) scale(1);
    }
    25% {
        transform: translate(60px, -80px) rotate(90deg) scale(1.15);
    }
    50% {
        transform: translate(-50px, 60px) rotate(180deg) scale(0.85);
    }
    75% {
        transform: translate(70px, -40px) rotate(270deg) scale(1.1);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 2rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    color: #212529;
    margin-bottom: 1rem;
    letter-spacing: -1px;
    text-shadow: none;
}

.hero-tagline {
    font-size: 2.2rem;
    font-weight: 700;
    color: #0066FF;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 102, 255, 0.1);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-light);
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-welcome {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.2) 0%, rgba(0, 168, 255, 0.2) 100%);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(0, 102, 255, 0.4);
    border-radius: 50px;
    padding: 1rem 2rem;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #212529;
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.3);
    animation: welcomeSlideIn 0.8s ease-out;
}

@keyframes welcomeSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-welcome i {
    font-size: 1.8rem;
    color: #FFD700;
    animation: wave 1.5s ease-in-out infinite;
}

@keyframes wave {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-15deg);
    }
    75% {
        transform: rotate(15deg);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    background-color: rgba(0, 102, 255, 0.08);
    backdrop-filter: blur(10px);
    color: #212529;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 2px solid rgba(0, 102, 255, 0.2);
}

.hero-badge i {
    font-size: 1.5rem;
    color: var(--primary-color);
    animation: pulse 2s infinite;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    background: var(--bg-blue-gradient);
    color: var(--text-white);
    padding: 1.2rem 3rem;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 10px 30px var(--shadow-blue);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px var(--shadow-blue-intense);
}

.cta-button i {
    transition: var(--transition);
}

.cta-button:hover i {
    transform: translateX(5px);
}

/* 페이드인 애니메이션 */
.fade-in {
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
}

.fade-in:nth-child(2) {
    animation-delay: 0.2s;
}

.fade-in:nth-child(3) {
    animation-delay: 0.4s;
}

.fade-in:nth-child(4) {
    animation-delay: 0.6s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
    from {
        opacity: 0;
        transform: translateY(20px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* ==========================================
   섹션 공통 스타일
   ========================================== */
.section {
    padding: var(--spacing-xl) 0;
}

.section:nth-child(even) {
    background-color: #FFFFFF;
}

.section:nth-child(odd) {
    background-color: #F8F9FA;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #212529;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-gray);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ==========================================
   문제점 섹션
   ========================================== */
.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px var(--shadow-dark);
    transition: var(--transition);
    border-top: 4px solid var(--primary-color);
    border: 1px solid var(--border-color);
}

.problem-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px var(--shadow-blue);
    border-color: var(--primary-color);
}

.problem-icon {
    width: 70px;
    height: 70px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    border: 2px solid var(--border-blue);
}

.problem-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.problem-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.problem-list {
    list-style: none;
    padding: 0;
}

.problem-list li {
    padding: 0.8rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-gray);
    line-height: 1.6;
}

.problem-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.5rem;
}

/* ==========================================
   안전한 시스템 섹션
   ========================================== */
.system-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.system-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
}

.system-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-blue);
}

.system-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-blue-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 0 5px 20px var(--shadow-blue);
}

.system-icon i {
    font-size: 2.2rem;
    color: var(--text-white);
}

.system-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.system-desc {
    color: var(--text-gray);
    line-height: 1.6;
}

/* ==========================================
   수익 구조 섹션
   ========================================== */
.revenue {
    background: var(--bg-darker);
}

.revenue-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: center;
}

.revenue-main {
    text-align: center;
    background: var(--bg-card);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px var(--shadow-blue);
    border: 2px solid var(--border-blue);
}

.revenue-percentage {
    font-size: 8rem;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 1rem;
    text-shadow: 0 0 30px rgba(0, 102, 255, 0.5);
}

.revenue-percentage::after {
    content: '%';
}

.revenue-label {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-white);
}

.revenue-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.revenue-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px var(--shadow-dark);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.revenue-item:hover {
    transform: translateX(10px);
    border-color: var(--primary-color);
}

.revenue-item-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.revenue-item-icon.creator {
    background: linear-gradient(135deg, #0066FF, #00A8FF);
}

.revenue-item-icon.service {
    background: linear-gradient(135deg, #4A90E2, #0066FF);
}

.revenue-item-icon.settlement {
    background: linear-gradient(135deg, #00A8FF, #4A90E2);
}

.revenue-item-icon.target {
    background: linear-gradient(135deg, #0052CC, #0066FF);
}

.revenue-item-icon i {
    font-size: 1.8rem;
    color: var(--text-white);
}

.revenue-item-content h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.revenue-item-content p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* ==========================================
   3단계 진행 섹션
   ========================================== */
.process-timeline {
    max-width: 700px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    border-left: 5px solid var(--primary-color);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.process-step:hover {
    background: var(--bg-darker);
    transform: translateX(10px);
    box-shadow: 0 5px 20px var(--shadow-blue);
}

.process-number {
    width: 60px;
    height: 60px;
    background: var(--bg-blue-gradient);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 5px 15px var(--shadow-blue);
}

.process-content {
    flex: 1;
}

.process-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.8rem;
}

.process-desc {
    color: var(--text-gray);
    line-height: 1.6;
}

.process-arrow {
    text-align: center;
    margin: 1rem 0;
}

.process-arrow i {
    font-size: 2rem;
    color: var(--primary-color);
}

/* ==========================================
   파트너 채널 섹션
   ========================================== */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.partner-card {
    background: var(--bg-card);
    padding: 2rem 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid var(--border-color);
}

.partner-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-blue);
}

.partner-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    border: 2px solid var(--border-blue);
}

.partner-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.partner-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.partner-link {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ==========================================
   왜 선택해야 하나요 섹션
   ========================================== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.why-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border-left: 5px solid var(--primary-color);
    border: 1px solid var(--border-color);
}

.why-card:hover {
    background: var(--bg-darker);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-blue);
}

.why-icon {
    width: 70px;
    height: 70px;
    background: var(--bg-blue-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 5px 15px var(--shadow-blue);
}

.why-icon i {
    font-size: 2rem;
    color: var(--text-white);
}

.why-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.why-desc {
    color: var(--text-gray);
    line-height: 1.6;
}

/* ==========================================
   FAQ 섹션
   ========================================== */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: 0 2px 10px var(--shadow-dark);
    border: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: var(--bg-card);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-white);
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--bg-darker);
}

.faq-question i {
    font-size: 1.2rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-question[aria-expanded="true"] i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding: 0 2rem 1.5rem 2rem;
    color: var(--text-gray);
    line-height: 1.8;
}

.faq-answer p + p {
    padding-top: 0;
}

/* ==========================================
   연락처 섹션
   ========================================== */
.contact-content {
    max-width: 900px;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 2px solid var(--border-color);
}

.contact-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-blue);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: var(--bg-blue-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 0 5px 15px var(--shadow-blue);
}

.contact-icon i {
    font-size: 2rem;
    color: var(--text-white);
}

.contact-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.8rem;
}

.contact-info {
    font-size: 1.1rem;
    color: var(--text-gray);
    font-weight: 500;
}

/* 카카오톡 채널 카드 */
.contact-card.kakao-card {
    background: linear-gradient(135deg, rgba(254, 229, 0, 0.1) 0%, rgba(254, 229, 0, 0.05) 100%);
    border-color: rgba(254, 229, 0, 0.3);
}

.contact-card.kakao-card:hover {
    border-color: #FEE500;
    box-shadow: 0 10px 30px rgba(254, 229, 0, 0.3);
}

.contact-icon.kakao-icon {
    background: linear-gradient(135deg, #FEE500 0%, #FFD700 100%);
    box-shadow: 0 5px 15px rgba(254, 229, 0, 0.4);
}

.contact-icon.kakao-icon i {
    color: #3C1E1E;
}

.kakao-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: linear-gradient(135deg, #FEE500 0%, #FFD700 100%);
    color: #3C1E1E;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    margin-top: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(254, 229, 0, 0.3);
}

.kakao-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(254, 229, 0, 0.5);
}

.kakao-btn i {
    font-size: 1.1rem;
}

.contact-cta {
    background: var(--bg-blue-gradient);
    padding: 3rem;
    border-radius: var(--border-radius);
    text-align: center;
    color: var(--text-white);
    box-shadow: 0 10px 40px var(--shadow-blue);
}

.contact-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.contact-badge i {
    font-size: 1.2rem;
}

.contact-cta h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-cta p {
    font-size: 1.2rem;
    opacity: 0.95;
}

/* ==========================================
   푸터
   ========================================== */
.footer {
    background: var(--bg-black);
    color: var(--text-gray);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

.footer p {
    opacity: 0.8;
}

/* ==========================================
   맨 위로 가기 버튼
   ========================================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--bg-blue-gradient);
    color: var(--text-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 5px 20px var(--shadow-blue);
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-blue-intense);
}

/* ==========================================
   카카오톡 플로팅 버튼
   ========================================== */
.kakao-floating {
    position: fixed;
    bottom: 100px;
    right: 30px;
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #FEE500;
    color: #3C1E1E;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(254, 229, 0, 0.4);
    transition: all 0.2s ease;
    z-index: 998;
}

.kakao-floating:hover {
    box-shadow: 0 6px 16px rgba(254, 229, 0, 0.6);
}

.kakao-floating-icon {
    width: 45px;
    height: 45px;
    background: #3C1E1E;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FEE500;
    box-shadow: 0 4px 15px rgba(60, 30, 30, 0.3);
    flex-shrink: 0;
}

.kakao-floating-icon svg {
    width: 28px;
    height: 28px;
}

.kakao-floating-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.kakao-text-main {
    font-size: 1rem;
    font-weight: 700;
    color: #3C1E1E;
    line-height: 1;
}

.kakao-text-sub {
    font-size: 0.75rem;
    font-weight: 500;
    color: rgba(60, 30, 30, 0.7);
    line-height: 1;
}

/* 모바일에서는 아이콘만 표시 */
@media (max-width: 768px) {
    .kakao-floating {
        padding: 1rem;
        bottom: 90px;
        right: 20px;
    }
    
    .kakao-floating-text {
        display: none;
    }
}

/* ==========================================
   회사 소개 섹션
   ========================================== */
.about {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.about-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 10px 40px var(--shadow-dark);
    border: 1px solid var(--border-color);
}

.about-card.main-info {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.05) 0%, var(--bg-card) 100%);
    border: 1px solid var(--border-blue);
}

.about-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-blue-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    box-shadow: 0 10px 30px var(--shadow-blue);
}

.about-icon i {
    font-size: 2.5rem;
    color: var(--text-white);
}

.about-details h3 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.company-tagline {
    font-size: 1.3rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 2rem;
}

.company-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-darker);
    border-radius: 15px;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.info-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px var(--shadow-blue);
    border-color: var(--primary-color);
}

.info-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-top: 0.3rem;
}

.info-item strong {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.info-item p {
    color: var(--text-gray);
    line-height: 1.6;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-card {
    background: var(--bg-blue-gradient);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    color: var(--text-white);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-blue);
    transition: var(--transition);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 15px 40px var(--shadow-blue-intense);
}

.stat-card:hover::before {
    transform: rotate(45deg);
}

.stat-number {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
}

.stat-label {
    font-size: 1.1rem;
    font-weight: 500;
    opacity: 0.95;
    position: relative;
    z-index: 2;
}

.stat-unit {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 0.3rem;
    position: relative;
    z-index: 2;
}

/* 회사 정보 - 찾아오시는 길 */
.company-location {
    margin-top: 3rem;
}

.location-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.location-title i {
    color: var(--primary-color);
    font-size: 2rem;
}

.company-map-embed {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 20px var(--shadow-dark);
    border: 2px solid var(--border-color);
}

.company-map-embed iframe {
    display: block;
    width: 100%;
}

/* ==========================================
   포트폴리오 섹션
   ========================================== */
.portfolio {
    background: linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.portfolio-item {
    display: flex;
    flex-direction: column;
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 20px var(--shadow-dark);
    transition: var(--transition);
    cursor: pointer;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    text-decoration: none;
}

.portfolio-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 40px var(--shadow-blue);
    border-color: var(--primary-color);
}

.portfolio-thumbnail {
    position: relative;
    width: 100%;
    padding-bottom: 177.78%; /* 9:16 비율 */
    background: var(--bg-darker);
    overflow: hidden;
}

.portfolio-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-thumbnail img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.9) 0%, rgba(0, 168, 255, 0.9) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay i {
    font-size: 2.5rem;
    color: var(--text-white);
}

.portfolio-overlay span {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-white);
}

.portfolio-info {
    padding: 1rem;
    background: var(--bg-card);
}

.portfolio-category {
    display: inline-block;
    background: var(--bg-blue-gradient);
    color: var(--text-white);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.portfolio-title {
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 600;
    margin: 0;
}

.portfolio-item.hidden {
    display: none;
}

/* 캠페인 광고 협업 - 카테고리 필터 */
.portfolio-categories {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.category-btn {
    padding: 0.8rem 1.5rem;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-gray);
    cursor: pointer;
    transition: var(--transition);
}

.category-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.category-btn.active {
    background: var(--bg-blue-gradient);
    color: var(--text-white);
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px var(--shadow-blue);
}

/* 더보기 버튼 */
.portfolio-more {
    text-align: center;
    margin: 2rem 0;
}

.btn-show-more {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2.5rem;
    background: var(--bg-card);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.btn-show-more:hover {
    background: var(--bg-blue-gradient);
    color: var(--text-white);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--shadow-blue);
}

.btn-show-more i {
    transition: var(--transition);
}

.portfolio-cta {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid var(--border-blue);
}

.portfolio-note {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 0;
}

.portfolio-note strong {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.5rem;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-light);
    font-weight: 600;
    margin-bottom: 0.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================
   스크롤 애니메이션
   ========================================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   반응형 디자인 - 태블릿
   ========================================== */
@media (max-width: 992px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .revenue-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .revenue-percentage {
        font-size: 6rem;
    }
    
    .company-info-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 3rem;
    }
}

/* ==========================================
   반응형 디자인 - 모바일
   ========================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(10, 10, 26, 0.98);
        backdrop-filter: blur(10px);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px var(--shadow-dark);
        padding: 2rem 0;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        padding: 0.8rem 0;
        width: 100%;
    }
    
    .nav-menu a {
        justify-content: center;
        padding: 0.8rem 1.5rem;
        font-size: 1.05rem;
    }
    
    /* 모바일에서 메뉴 정렬 */
    .nav-menu .login-item,
    .nav-menu .profile-item {
        margin-left: 0;
        margin-top: 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 1.5rem !important;
    }
    
    .nav-menu a i {
        font-size: 1.1rem;
    }
    
    .nav-menu .login-item,
    .nav-menu .profile-item {
        margin-left: 0;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .profile-btn {
        margin: 0 auto;
        max-width: 250px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-badge {
        font-size: 1rem;
        padding: 0.8rem 1.5rem;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .problems-grid,
    .system-grid,
    .why-grid {
        grid-template-columns: 1fr;
    }
    
    .revenue-percentage {
        font-size: 5rem;
    }
    
    .process-step {
        flex-direction: column;
        text-align: center;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-card {
        padding: 2rem;
    }
    
    .about-details h3 {
        font-size: 2rem;
    }
    
    .company-tagline {
        font-size: 1.1rem;
    }
    
    .info-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }
    
    .stat-card {
        padding: 2rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .revenue-percentage {
        font-size: 4rem;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .problem-card,
    .system-card,
    .why-card {
        padding: 1.5rem;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .portfolio-categories {
        gap: 0.5rem;
    }
    
    .category-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .company-map-embed iframe {
        height: 300px;
    }
    
    .section-description {
        font-size: 1rem;
    }
}

/* ==========================================
   고급스러운 애니메이션 추가
   ========================================== */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 102, 255, 0.1), transparent);
    background-size: 2000px 100%;
    animation: shimmer 3s infinite;
    pointer-events: none;
}