/* ============================================
   윙키 - 2025 모던 디자인 시스템
   트렌드: 글래스모피즘 + 네온 + 마이크로 인터랙션
   ============================================ */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Brand Colors - Enhanced */
    --primary: #FF6B35;
    --primary-light: #FF8C42;
    --primary-lighter: #FFA726;
    --primary-dark: #E55A2B;
    --secondary: #FFB627;
    --accent-blue: #4A90E2;
    --accent-purple: #9B59B6;
    --accent-green: #2ECC71;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #EEEEEE;
    --gray-300: #E0E0E0;
    --gray-400: #BDBDBD;
    --gray-500: #9E9E9E;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    
    /* Background Colors */
    --bg-light: #FFF8F3;
    --bg-lighter: #FFFAF5;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.18);
    
    /* Shadows - Enhanced */
    --shadow-sm: 0 2px 8px rgba(255, 107, 53, 0.08);
    --shadow-md: 0 8px 20px rgba(255, 107, 53, 0.12);
    --shadow-lg: 0 12px 35px rgba(255, 107, 53, 0.15);
    --shadow-xl: 0 20px 50px rgba(255, 107, 53, 0.2);
    --shadow-glow: 0 0 20px rgba(255, 107, 53, 0.4);
    --shadow-neon: 0 0 30px rgba(255, 107, 53, 0.6);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

body {
    font-family: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   Header & Navigation - Glassmorphism Style
   ============================================ */

.main-header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.main-header:hover {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
}

.logo {
    text-decoration: none;
    color: var(--primary);
    position: relative;
    transition: transform var(--transition-bounce);
}

.logo:hover {
    transform: scale(1.05) rotate(-2deg);
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.logo-text::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-lighter));
    border-radius: 2px;
    transition: width var(--transition-normal);
}

.logo:hover .logo-text::after {
    width: 100%;
}

.main-nav {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    transition: all var(--transition-fast);
    padding: 8px 0;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--primary-lighter));
    border-radius: 2px;
    transition: width var(--transition-normal);
}

.nav-link:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

.nav-link:hover::before {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    transition: transform var(--transition-normal);
}

.mobile-menu-btn:hover {
    transform: rotate(90deg);
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-lighter));
    margin: 5px 0;
    border-radius: 2px;
    transition: var(--transition-normal);
}

/* Mobile Menu - Glass Style */
.mobile-menu {
    display: none;
    position: fixed;
    top: 75px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    z-index: 999;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.mobile-menu.active {
    max-height: 700px;
}

.mobile-menu-content {
    padding: 25px 20px;
}

.mobile-nav-link {
    display: block;
    padding: 16px 24px;
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 600;
    border-radius: 16px;
    margin-bottom: 10px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.mobile-nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 53, 0.1), transparent);
    transition: left var(--transition-slow);
}

.mobile-nav-link:hover::before {
    left: 100%;
}

.mobile-nav-link:hover {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(255, 167, 38, 0.1));
    color: var(--primary);
    transform: translateX(10px);
}

.mobile-nav-link.cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 100%);
    color: var(--white);
    text-align: center;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.mobile-nav-link.cta:hover {
    box-shadow: var(--shadow-glow);
    transform: scale(1.02) translateY(-2px);
}

/* ============================================
   Buttons - Modern Interactive Style
   ============================================ */

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 1;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-lighter) 0%, var(--secondary) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: -1;
    border-radius: 50px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover::after {
    opacity: 1;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    position: relative;
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow-glow);
    transform: translateY(-3px);
    border-color: var(--primary);
}

.btn-white {
    background: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, var(--white) 0%, var(--bg-light) 100%);
}

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-outline-white:hover {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

.btn-lg {
    padding: 18px 42px;
    font-size: 1.1rem;
}

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

/* ============================================
   Hero Section - Gradient Mesh Style
   ============================================ */

.hero-section {
    background: linear-gradient(135deg, #FF6B35 0%, #FF8C42 25%, #FFA726 50%, #FFB627 75%, #FFC947 100%);
    color: var(--white);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 140, 66, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 167, 38, 0.2) 0%, transparent 50%);
    animation: morphing 20s ease-in-out infinite;
}

@keyframes morphing {
    0%, 100% { 
        transform: translate(0, 0) rotate(0deg);
    }
    33% { 
        transform: translate(5%, -5%) rotate(5deg);
    }
    66% { 
        transform: translate(-5%, 5%) rotate(-5deg);
    }
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, transparent 0%, var(--white) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 25px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 45px;
    opacity: 0.95;
    line-height: 1.8;
    font-weight: 500;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

/* ============================================
   Section Styles - Modern Layout
   ============================================ */

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
    letter-spacing: -0.5px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-lighter));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--gray-600);
    font-weight: 500;
}

/* ============================================
   Quick Navigation - Card Grid
   ============================================ */

.quick-nav-section {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--white) 0%, var(--bg-lighter) 100%);
}

.quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.quick-card {
    background: var(--white);
    border-radius: 24px;
    padding: 40px 30px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.quick-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-lighter), var(--secondary));
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
}

.quick-card:hover::before {
    transform: translateX(0);
}

.quick-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(255, 107, 53, 0.15);
    border-color: rgba(255, 107, 53, 0.1);
}

.quick-card-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    display: inline-block;
    transition: all var(--transition-bounce);
}

.quick-card:hover .quick-card-icon {
    transform: scale(1.2) rotate(10deg);
}

.quick-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 15px;
}

.quick-card-desc {
    font-size: 1rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 20px;
}

.quick-card-link {
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
    position: relative;
}

.quick-card-link::after {
    content: '→';
    transition: transform var(--transition-fast);
}

.quick-card:hover .quick-card-link {
    gap: 15px;
}

.quick-card:hover .quick-card-link::after {
    transform: translateX(5px);
}

/* ============================================
   Features Section - Glass Cards
   ============================================ */

.features-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
    animation: float 15s ease-in-out infinite;
}

.features-section .section-title {
    color: var(--white);
}

.features-section .section-title::after {
    background: linear-gradient(90deg, var(--white), rgba(255, 255, 255, 0.5));
}

.features-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
    position: relative;
    z-index: 1;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 45px 35px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    transition: all var(--transition-normal);
    text-align: center;
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
}

.feature-icon {
    font-size: 4rem;
    margin-bottom: 25px;
    display: inline-block;
    transition: transform var(--transition-bounce);
}

.feature-card:hover .feature-icon {
    transform: scale(1.3) rotate(360deg);
}

.feature-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 15px;
}

.feature-desc {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

/* ============================================
   Quick Nav Wrapper - Two Column Layout
   ============================================ */

.quick-nav-wrapper {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 40px;
    align-items: start;
}

.quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

/* ============================================
   Wingkey Message Box - Compact & Animated
   ============================================ */

.wingkey-message-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 100%);
    border-radius: 20px;
    padding: 30px 25px;
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.2);
    position: sticky;
    top: 100px;
    color: var(--white);
    text-align: center;
}

.message-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message-text-wrapper {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 10px;
}

.message-line {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 600;
}

.message-line.main {
    font-size: 1.8rem;
    font-weight: 800;
    margin-top: 5px;
}

.old-way {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: line-through;
    animation: fadeOut 3s ease-in-out infinite;
}

@keyframes fadeOut {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 0.3; }
}

.subject {
    color: var(--white);
}

.subject.highlight {
    background: var(--white);
    color: var(--primary);
    padding: 5px 15px;
    border-radius: 8px;
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 255, 255, 0.8);
        transform: scale(1.05);
    }
}

.new-way {
    color: var(--white);
    animation: pulse 2s ease-in-out infinite;
}

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

.arrow {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.5rem;
    animation: bounce 1.5s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(5px); }
}

.message-desc {
    font-size: 0.95rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    padding: 15px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.message-btn {
    display: inline-block;
    background: var(--white);
    color: var(--primary);
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all var(--transition-normal);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.message-btn:hover {
    background: var(--bg-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* ============================================
   Footer - Modern Vertical Menu Style
   ============================================ */

.main-footer {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    color: rgba(255, 255, 255, 0.8);
    padding: 80px 0 30px;
    position: relative;
    overflow: hidden;
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-lighter), var(--secondary));
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(4, 1fr);
    gap: 50px;
    margin-bottom: 60px;
}

/* Footer Brand Column */
.footer-brand {
    padding-right: 30px;
}

.footer-logo .logo-text {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    font-size: 1.1rem;
    line-height: 1.8;
    margin: 20px 0 30px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-desc strong {
    color: var(--white);
    font-weight: 700;
}

.footer-company {
    font-size: 0.9rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
}

.footer-company p {
    margin: 5px 0;
}

/* Footer Columns */
.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-lighter));
    border-radius: 2px;
}

/* Footer Menu - Vertical List */
.footer-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-menu li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    position: relative;
}

.footer-menu li a i {
    color: var(--primary);
    font-size: 0.9rem;
    width: 18px;
    transition: transform var(--transition-fast);
}

.footer-menu li a:hover {
    color: var(--white);
    transform: translateX(5px);
}

.footer-menu li a:hover i {
    transform: scale(1.2);
}

/* Footer CTA Column */
.footer-cta {
    text-align: center;
}

.footer-cta-text {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary), var(--primary-lighter));
    color: var(--white);
    padding: 14px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all var(--transition-normal);
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
    margin-bottom: 25px;
}

.footer-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(255, 107, 53, 0.5);
}

.footer-btn i {
    transition: transform var(--transition-fast);
}

.footer-btn:hover i {
    transform: translateX(5px);
}

/* Social Links */
.footer-social {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.social-link {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    font-size: 1.2rem;
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.4);
}

/* Footer Bottom */
.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.copyright {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.footer-links-bottom {
    display: flex;
    gap: 20px;
}

.footer-links-bottom a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-links-bottom a:hover {
    color: var(--white);
}

/* CTA Section Styles */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 100%);
    padding: 80px 0;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.cta-subtitle {
    font-size: 1.2rem;
    margin-bottom: 35px;
    line-height: 1.8;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, var(--primary), var(--primary-lighter));
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(255, 107, 53, 0.5);
}

/* ============================================
   Responsive Design
   ============================================ */

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1200px) {
    .quick-nav-wrapper {
        grid-template-columns: 1fr 350px;
        gap: 30px;
    }
    
    .footer-grid {
        grid-template-columns: 1.2fr repeat(4, 1fr);
        gap: 35px;
    }
}

@media (max-width: 992px) {
    .quick-nav-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .wingkey-message-box {
        position: relative;
        top: 0;
    }
    
    .quick-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .footer-brand {
        grid-column: 1 / -1;
        text-align: center;
        padding-right: 0;
    }
    
    .footer-cta {
        grid-column: 1 / -1;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 40px;
        margin-top: 20px;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .quick-nav-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 35px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-title {
        font-size: 1.8rem;
    }
    
    .cta-subtitle {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .quick-card {
        padding: 30px 20px;
    }
    
    .wingkey-message-box {
        padding: 25px 20px;
    }
    
    .message-line {
        font-size: 1.1rem;
    }
    
    .message-line.main {
        font-size: 1.5rem;
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 1.2rem;
    }
}

/* ============================================
   Utility Classes
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }
.mt-50 { margin-top: 50px; }

.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.mb-40 { margin-bottom: 40px; }
.mb-50 { margin-bottom: 50px; }

/* ============================================
   Scroll Animations
   ============================================ */

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* ============================================
   Loading & Transitions
   ============================================ */

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}