/* ===================================
   SmartFold LED System Landing Page
   Premium B2B Design with Purple/Blue Gradient
   =================================== */

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

:root {
    /* Brand Colors */
    --primary-purple: #8B4BC9;
    --primary-blue: #4A90E2;
    --dark-purple: #5D2E8C;
    --light-purple: #B88CE0;
    --gradient-primary: linear-gradient(135deg, #8B4BC9 0%, #4A90E2 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    
    /* Neutral Colors */
    --black: #1A1A1A;
    --dark-gray: #333333;
    --medium-gray: #666666;
    --light-gray: #CCCCCC;
    --lighter-gray: #F5F5F5;
    --white: #FFFFFF;
    
    /* Semantic Colors */
    --success: #00C853;
    --warning: #FFB300;
    --error: #D32F2F;
    --info: #1976D2;
    
    /* Typography */
    --font-primary: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-purple: 0 8px 32px rgba(139, 75, 201, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
    overflow-x: hidden;
}

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

/* ===================================
   Navigation Bar
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--medium-gray);
    letter-spacing: 0.1em;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-links a:not(.btn-primary-small):hover {
    color: var(--primary-purple);
}

.nav-links a:not(.btn-primary-small)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
}

.nav-links a:not(.btn-primary-small):hover::after {
    width: 100%;
}

.btn-primary-small {
    padding: 0.5rem 1.5rem;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: var(--transition-fast);
}

.btn-primary-small:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-purple);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--dark-gray);
    cursor: pointer;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-md);
    padding: 1rem;
    flex-direction: column;
    gap: 1rem;
    z-index: 999;
}

.mobile-menu a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.mobile-menu a:hover {
    background: var(--lighter-gray);
    color: var(--primary-purple);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-dark);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 75, 201, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(74, 144, 226, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    50% { transform: translateY(-30px) translateX(20px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    color: var(--white);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.title-line-1 {
    display: block;
    background: linear-gradient(90deg, var(--white) 0%, var(--light-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-line-2 {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

.btn-primary, .btn-secondary, .btn-pdf {
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(139, 75, 201, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-pdf {
    background: rgba(255, 87, 34, 0.9);
    color: var(--white);
    box-shadow: 0 8px 32px rgba(255, 87, 34, 0.3);
}

.btn-pdf:hover {
    background: rgba(255, 87, 34, 1);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(255, 87, 34, 0.5);
}

.btn-pdf i {
    font-size: 1.2rem;
}

.hero-image {
    position: relative;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.product-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.floating-badge {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    animation: floatBadge 3s ease-in-out infinite;
}

.floating-badge i {
    color: var(--primary-purple);
}

.badge-1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.badge-2 {
    top: 40%;
    right: -10%;
    animation-delay: 1s;
}

.badge-3 {
    bottom: 10%;
    left: -5%;
    animation-delay: 2s;
}

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

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

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    animation: bounce 2s infinite;
}

.scroll-mouse {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 20px;
    margin: 0 auto 0.5rem;
    position: relative;
}

.scroll-mouse::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 2px;
    animation: scrollWheel 2s infinite;
}

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

@keyframes scrollWheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(20px); }
}

/* ===================================
   Video Section (Full Width)
   =================================== */

.video-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    position: relative;
    overflow: hidden;
}

.video-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-purple), transparent);
}

.video-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.video-header {
    text-align: center;
    margin-bottom: 3rem;
}

.video-title {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.video-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
}

.video-wrapper-full {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    background: rgba(0, 0, 0, 0.2);
    animation: fadeInUp 1s ease;
}

.video-wrapper-full iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
}

/* ===================================
   Section Common Styles
   =================================== */

section {
    padding: var(--spacing-xl) 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--black);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

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

.section-subtitle {
    font-size: 1.125rem;
    color: var(--medium-gray);
    margin-top: 1.5rem;
}

/* ===================================
   Features Section
   =================================== */

.features {
    background: var(--lighter-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--medium-gray);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.feature-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(139, 75, 201, 0.1);
    color: var(--primary-purple);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

/* ===================================
   ROI Section
   =================================== */

.roi-section {
    background: var(--gradient-dark);
    color: var(--white);
}

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

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

.roi-text .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.roi-comparison {
    margin-top: 2rem;
}

.comparison-item {
    margin-bottom: 2rem;
}

.comparison-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.comparison-bar {
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 1rem;
}

.bar-fill {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    font-weight: 700;
    transition: width 1.5s ease;
}

.traditional .bar-fill {
    background: linear-gradient(90deg, #D32F2F 0%, #E57373 100%);
}

.smartfold .bar-fill {
    background: var(--gradient-primary);
}

.comparison-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.comparison-list li {
    padding-left: 1.5rem;
    position: relative;
    color: rgba(255, 255, 255, 0.8);
}

.comparison-list.highlight li {
    font-weight: 500;
}

.comparison-list i {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
}

.comparison-list .fa-check {
    color: var(--success);
}

.comparison-list .fa-times-circle {
    color: var(--light-gray);
}

.roi-result {
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(139, 75, 201, 0.2);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-purple);
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.25rem;
}

.roi-result i {
    font-size: 2rem;
    color: var(--primary-purple);
}

.roi-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ===================================
   Quote Calculator Section
   =================================== */

.quote-section {
    background: var(--lighter-gray);
}

.quote-calculator {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.quote-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.quote-field label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--dark-gray);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.quote-field label i {
    color: var(--primary-purple);
    width: 20px;
    text-align: center;
}

.quote-field select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-primary);
    background: var(--white);
    transition: var(--transition-fast);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%23666'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.quote-field select:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(139, 75, 201, 0.1);
}

.quote-checkbox-group {
    display: flex;
    gap: 1.5rem;
}

.quote-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 400;
    color: var(--dark-gray);
    font-size: 0.95rem;
}

.quote-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-purple);
    cursor: pointer;
}

.quote-field-desc {
    font-size: 0.85rem;
    color: var(--medium-gray);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.quote-radio-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.quote-radio {
    cursor: pointer;
}

.quote-radio input[type="radio"] {
    display: none;
}

.radio-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.4rem;
    padding: 1rem 0.75rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    background: var(--white);
}

.radio-card i {
    font-size: 1.5rem;
    color: var(--medium-gray);
    transition: var(--transition-fast);
}

.radio-card strong {
    font-size: 0.85rem;
    color: var(--dark-gray);
}

.radio-card small {
    font-size: 0.75rem;
    color: var(--medium-gray);
}

.quote-radio input[type="radio"]:checked + .radio-card {
    border-color: var(--primary-purple);
    background: rgba(139, 75, 201, 0.05);
    box-shadow: 0 0 0 3px rgba(139, 75, 201, 0.1);
}

.quote-radio input[type="radio"]:checked + .radio-card i {
    color: var(--primary-purple);
}

.radio-card-disabled {
    border-color: rgba(211, 47, 47, 0.3);
    background: rgba(211, 47, 47, 0.03);
}

.radio-card-disabled i {
    color: var(--error) !important;
}

.radio-card-disabled strong {
    color: var(--error);
}

.quote-radio input[type="radio"]:checked + .radio-card-disabled {
    border-color: var(--error);
    background: rgba(211, 47, 47, 0.06);
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
}

.quote-access-warning {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    padding: 1.25rem;
    background: rgba(211, 47, 47, 0.06);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--error);
    animation: fadeInUp 0.3s ease;
}

.quote-access-warning i {
    color: var(--error);
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.quote-access-warning strong {
    display: block;
    color: var(--error);
    font-size: 0.95rem;
    margin-bottom: 0.4rem;
}

.quote-access-warning p {
    font-size: 0.85rem;
    color: var(--dark-gray);
    line-height: 1.6;
}

.quote-discount-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: rgba(139, 75, 201, 0.08);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--primary-purple);
    font-weight: 500;
}

.quote-discount-info i {
    flex-shrink: 0;
}

.quote-note {
    font-size: 0.8rem;
    color: var(--medium-gray);
    margin-top: 0.5rem;
}

.quote-result {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--primary-purple);
}

.quote-result-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.quote-result-title i {
    color: var(--primary-purple);
}

.quote-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.quote-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--lighter-gray);
    font-size: 1rem;
}

.quote-line span:first-child {
    color: var(--medium-gray);
}

.quote-line span:last-child {
    font-weight: 600;
    color: var(--dark-gray);
}

.quote-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    margin-top: 0.5rem;
    border-top: 2px solid var(--primary-purple);
}

.quote-total span:first-child {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--black);
}

.quote-total span:last-child {
    font-size: 1.75rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.quote-total span:last-child.special {
    font-size: 1.25rem;
    background: linear-gradient(135deg, var(--warning) 0%, #FF8F00 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.quote-disclaimer {
    font-size: 0.8rem;
    color: var(--medium-gray);
    margin-top: 1rem;
    text-align: center;
}

.quote-special {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(255, 179, 0, 0.1);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--warning);
    font-size: 0.875rem;
    color: var(--dark-gray);
}

.quote-special i {
    color: var(--warning);
    flex-shrink: 0;
}

.quote-result-disabled {
    opacity: 0.45;
    pointer-events: none;
    filter: grayscale(0.5);
    transition: opacity 0.3s ease, filter 0.3s ease;
}

.quote-cta {
    width: 100%;
    justify-content: center;
    margin-top: 1.5rem;
    text-align: center;
}

/* ===================================
   Markets Section
   =================================== */

.markets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.market-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.market-card:hover {
    border-color: var(--primary-purple);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.market-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

.market-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.market-tags span {
    padding: 0.25rem 0.75rem;
    background: var(--lighter-gray);
    color: var(--medium-gray);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.market-description {
    color: var(--medium-gray);
    line-height: 1.8;
}

/* ===================================
   Specs Section
   =================================== */

.specs {
    background: var(--lighter-gray);
}

.specs-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.specs-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.specs-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.spec-group h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-purple);
}

.spec-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--light-gray);
}

.spec-label {
    font-weight: 600;
    color: var(--dark-gray);
}

.spec-value {
    color: var(--medium-gray);
    text-align: right;
}

/* ===================================
   Use Cases Section
   =================================== */

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.case-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.case-card:hover .case-image img {
    transform: scale(1.1);
}

.case-content {
    padding: 1.5rem;
}

.case-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 0.75rem;
}

.case-description {
    color: var(--medium-gray);
    line-height: 1.8;
}

/* ===================================
   Contact Section
   =================================== */

.contact {
    background: linear-gradient(135deg, #8B4BC9 0%, #4A90E2 100%);
    color: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info .section-title,
.contact-info .section-subtitle {
    color: var(--white);
    text-align: left;
}

.contact-info .section-title::after {
    left: 0;
    transform: none;
    background: var(--white);
}

.contact-benefits {
    margin: 2rem 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1rem;
}

.benefit-item i {
    font-size: 1.5rem;
    color: var(--success);
}

.contact-direct {
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.contact-direct h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.direct-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.direct-item i {
    width: 24px;
    text-align: center;
}

.contact-form-wrapper {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--dark-gray);
    font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem 1rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(139, 75, 201, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.location-inputs {
    display: grid;
    grid-template-columns: 2fr 2fr 2fr;
    gap: 0.75rem;
}

.location-select,
.location-input {
    padding: 0.75rem 1rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: var(--transition-fast);
}

.location-select:focus,
.location-input:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(139, 75, 201, 0.1);
}

input[type="date"] {
    padding: 0.75rem 1rem;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: var(--transition-fast);
    cursor: pointer;
}

input[type="date"]:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(139, 75, 201, 0.1);
}

/* Date input 커스터마이징 */
input[type="date"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    filter: invert(0.5);
}

input[type="date"]::-webkit-calendar-picker-indicator:hover {
    filter: invert(0.3);
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
}

.checkbox-group label {
    margin: 0;
    font-size: 0.875rem;
    font-weight: 400;
}

.btn-submit {
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition-normal);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-purple);
}

.form-success {
    display: none;
    text-align: center;
    padding: 3rem;
    color: var(--dark-gray);
}

.form-success.active {
    display: block;
}

.form-success i {
    font-size: 4rem;
    color: var(--success);
    margin-bottom: 1rem;
}

.form-success h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--black);
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--gradient-dark);
    color: var(--white);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.footer-description {
    margin-top: 1rem;
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-col h4 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-col a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-purple);
    transform: translateY(-3px);
}

/* ===================================
   Scroll to Top Button
   =================================== */

.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-purple);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

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

.scroll-top:hover {
    transform: translateY(-5px);
}

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

@media (max-width: 1024px) {
    .hero-content,
    .roi-content,
    .specs-content,
    .quote-calculator {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .video-title {
        font-size: 2rem;
    }

    .video-container {
        padding: 0 1.5rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .mobile-menu.active {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: 100px 0 50px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .video-section {
        padding: 4rem 0;
    }

    .video-container {
        padding: 0 1rem;
    }

    .video-title {
        font-size: 1.75rem;
    }

    .video-subtitle {
        font-size: 1rem;
    }

    .video-header {
        margin-bottom: 2rem;
    }

    .floating-badge {
        position: static;
        margin-bottom: 1rem;
    }

    .features-grid,
    .markets-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .quote-checkbox-group {
        flex-direction: column;
        gap: 0.75rem;
    }

    .quote-radio-group {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .location-inputs {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }

    .scroll-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }

    .floating-call-btn {
        bottom: 1rem;
        left: 1rem;
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }

    .floating-call-btn .call-text {
        display: none;
    }
}

/* ===================================
   Floating Call Button
   =================================== */

.floating-call-btn {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    width: auto;
    min-width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #00C853 0%, #00E676 100%);
    color: var(--white);
    border-radius: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0 1.5rem;
    text-decoration: none;
    box-shadow: 0 8px 32px rgba(0, 200, 83, 0.4);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    animation: callPulse 2s infinite;
}

.floating-call-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 200, 83, 0.5);
    animation: none;
}

.floating-call-btn i {
    font-size: 1.5rem;
    animation: phoneRing 1s ease-in-out infinite;
}

.floating-call-btn:hover i {
    animation: phoneShake 0.5s ease;
}

.call-text {
    font-size: 1rem;
    font-weight: 600;
    white-space: nowrap;
}

@keyframes callPulse {
    0%, 100% {
        box-shadow: 0 8px 32px rgba(0, 200, 83, 0.4);
    }
    50% {
        box-shadow: 0 8px 40px rgba(0, 200, 83, 0.6), 0 0 0 10px rgba(0, 200, 83, 0.1);
    }
}

@keyframes phoneRing {
    0%, 100% {
        transform: rotate(0deg);
    }
    10%, 30% {
        transform: rotate(-15deg);
    }
    20%, 40% {
        transform: rotate(15deg);
    }
}

@keyframes phoneShake {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-10deg);
    }
    75% {
        transform: rotate(10deg);
    }
}