/* Hero Section */
.hero {
    padding: 100px 0 80px;
    text-align: center;
    position: relative;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    box-shadow: var(--shadow-sm);
    animation: fadeInDown 0.8s var(--ease-smooth);
}

.hero-badge::before {
    content: '✈️';
    font-size: 16px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

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

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

h1 {
    font-size: clamp(48px, 7vw, 80px);
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s var(--ease-smooth);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto 48px;
    line-height: 1.8;
    font-weight: 400;
    animation: fadeInUp 0.8s 0.2s var(--ease-smooth) backwards;
}

/* Stats Section */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 64px;
    padding: 40px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    max-width: 800px;
    margin: 0 auto 48px;
    box-shadow: var(--shadow-md);
    animation: fadeInUp 0.8s 0.4s var(--ease-smooth) backwards;
}

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

.stat-number {
    font-family: var(--font-en);
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
    display: block;
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-tertiary);
    font-weight: 500;
}

.hero-cta {
    display: inline-flex;
    gap: 16px;
    animation: fadeInUp 0.8s 0.6s var(--ease-smooth) backwards;
}

.btn-primary {
    padding: 18px 44px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 14px;
    font-family: var(--font-kr);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s var(--ease-smooth);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

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

.btn-primary:hover::before {
    left: 100%;
}

/* About Section */
.about {
    padding: 100px 0;
    background: var(--color-surface);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-main {
    font-size: 22px;
    line-height: 1.8;
    color: var(--color-text-primary);
    margin-bottom: 24px;
}

.about-main strong {
    color: var(--color-accent);
}

.about-desc {
    font-size: 17px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

/* Section Common */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: clamp(36px, 5vw, 48px);
    font-weight: 900;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.feature-card {
    padding: 36px 28px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    transition: all 0.4s var(--ease-smooth);
    position: relative;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 2px;
    background: var(--gradient-primary);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s var(--ease-smooth);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.feature-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-size: 15px;
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
    background: var(--color-surface);
}

.steps-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.steps-container::before {
    content: '';
    position: absolute;
    left: 60px;
    top: 60px;
    bottom: 100px;
    width: 2px;
    background: linear-gradient(180deg,
        var(--color-accent) 0%,
        rgba(20, 184, 166, 0.5) 50%,
        rgba(20, 184, 166, 0.2) 100%);
}

.step {
    display: flex;
    gap: 40px;
    margin-bottom: 48px;
    align-items: flex-start;
    position: relative;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    background: var(--color-bg);
    border: 3px solid var(--color-border);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 1;
}

.step-icon {
    font-size: 36px;
    line-height: 1;
}

.step-num {
    font-family: var(--font-en);
    font-size: 22px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.step-content {
    flex: 1;
    padding-top: 20px;
}

.step-content h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.step-content p {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Services Section */
.services {
    padding: 100px 0;
    background: var(--color-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    padding: 36px;
    transition: all 0.4s var(--ease-smooth);
    position: relative;
    display: flex;
    flex-direction: column;
}

.service-card.featured {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px var(--color-accent), var(--shadow-lg);
}

.service-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--gradient-primary);
    color: white;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
}

.service-badge.coming-soon {
    background: var(--color-text-tertiary);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 72px;
    height: 72px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text-primary);
}

.service-desc {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-desc strong {
    color: var(--color-text-primary);
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 0 0 24px 0;
    flex: 1;
}

.service-features li {
    font-size: 14px;
    color: var(--color-text-secondary);
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    border-bottom: 1px solid var(--color-border-light);
}

.service-features li:last-child {
    border-bottom: none;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

.btn-service {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 24px;
    background: var(--color-bg);
    color: var(--color-text-primary);
    border: 1.5px solid var(--color-border);
    border-radius: 12px;
    font-family: var(--font-kr);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-smooth);
}

.btn-service:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn-service-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.btn-service-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-service-disabled {
    background: var(--color-surface);
    color: var(--color-text-tertiary);
    border-color: var(--color-border-light);
    cursor: not-allowed;
}

.btn-service-disabled:hover {
    border-color: var(--color-border-light);
    color: var(--color-text-tertiary);
    transform: none;
}

.btn-arrow {
    transition: transform 0.3s var(--ease-smooth);
}

.btn-service:hover .btn-arrow {
    transform: translateX(4px);
}

/* CTA Section */
.cta {
    padding: 120px 0;
    background: var(--color-surface);
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-size: clamp(32px, 5vw, 44px);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.3;
}

.cta-subtitle {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-cta {
    padding: 18px 40px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 14px;
    font-family: var(--font-kr);
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-smooth);
    box-shadow: var(--shadow-md);
}

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

.btn-cta-outline {
    padding: 18px 40px;
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
    border-radius: 14px;
    font-family: var(--font-kr);
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-smooth);
}

.btn-cta-outline:hover {
    background: var(--color-accent);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Responsive */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 80px 0 60px;
    }

    h1 {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .stats-bar {
        flex-direction: column;
        gap: 32px;
        padding: 32px 24px;
    }

    .about {
        padding: 80px 0;
    }

    .about-main {
        font-size: 18px;
    }

    .about-desc {
        font-size: 15px;
    }

    .features,
    .how-it-works,
    .services,
    .cta {
        padding: 80px 0;
    }

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

    .steps-container::before {
        left: 40px;
    }

    .step {
        gap: 24px;
    }

    .step-number {
        width: 80px;
        height: 80px;
    }

    .step-icon {
        font-size: 28px;
    }

    .step-num {
        font-size: 18px;
    }

    .service-card {
        padding: 28px;
    }

    .cta-title {
        font-size: 28px;
    }

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

    .btn-cta,
    .btn-cta-outline {
        width: 100%;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .btn-primary {
        width: 100%;
    }
}