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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #1a202c;
    overflow-x: hidden;
}

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



/* Header */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: #7c3aed;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: #7c3aed;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: #7c3aed;
    transition: width 0.3s ease;
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}
/* Hero Section with Purple Background */
/* .bandi-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8rem 0 4rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
} */

/* Bandi Hero Section with Photo Background */
        .bandi-hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            margin-top: 80px;
            
            /* Background Image - Mobile app/technology focused */
            background-image: linear-gradient(
                rgba(58, 58, 58, 0.1), 
                rgba(68, 68, 68, 0.2)
            ), url('../assets/images/bandiapp/phonebackground.png');
            
            /* Alternative background images you can use:
            
            // University students with phones/studying
            background-image: linear-gradient(rgba(124, 58, 237, 0.1), rgba(55, 48, 163, 0.2)), url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?ixlib=rb-4.0.3&auto=format&fit=crop&w=2071&q=80');
            
            // Mental wellness/meditation with technology
            background-image: linear-gradient(rgba(124, 58, 237, 0.1), rgba(55, 48, 163, 0.2)), url('https://images.unsplash.com/photo-1544027993-37dbfe43562a?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
            
            // Mobile phone and wellness theme
            background-image: linear-gradient(rgba(124, 58, 237, 0.1), rgba(55, 48, 163, 0.2)), url('https://images.unsplash.com/photo-1607703703520-bb638e84caf2?ixlib=rb-4.0.3&auto=format&fit=crop&w=2106&q=80');
            
            // University campus with technology
            background-image: linear-gradient(rgba(124, 58, 237, 0.1), rgba(55, 48, 163, 0.2)), url('https://images.unsplash.com/photo-1498050108023-c5249f4df085?ixlib=rb-4.0.3&auto=format&fit=crop&w=2072&q=80');
            
            // Clean tech/app development workspace
            background-image: linear-gradient(rgba(124, 58, 237, 0.1), rgba(55, 48, 163, 0.2)), url('https://images.unsplash.com/photo-1551434678-e076c223a692?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
            */
            
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            padding: 4rem 0;
        }

.bandi-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.05"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.05"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.7;
    color: #ffffffc7;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    color: #ffffffc7;
}

/* Phone Mockup with Real Image */
.hero-mockup {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.phone-container {
    position: relative;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.phone-container:hover {
    transform: scale(1.05);
}

.phone-image {
    width: 300px;
    height: auto;
    border-radius: 30px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.instagram-link {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    text-decoration: none;
}

.phone-container:hover .instagram-link {
    opacity: 1;
}

/* App Store Links */
.app-store-section {
    background: #f8fafc;
    padding: 4rem 0;
    text-align: center;
}

.app-store-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #1a202c;
}

.app-store-content p {
    font-size: 1.2rem;
    color: #4a5568;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.store-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.store-button {
    display: inline-block;
    transition: transform 0.3s ease;
}

.store-button:hover {
    transform: translateY(-2px);
}

.store-button img {
    height: 60px;
    width: auto;
}

/* App Features Demo Section */
.app-demo-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
}

.demo-content {
    text-align: center;
}

.demo-content h2 {
    font-size: 3rem;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #ffffff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.demo-content p {
    font-size: 1.2rem;
    margin-bottom: 4rem;
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.features-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.feature-demo {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-demo:hover {
    transform: translateY(-5px);
}

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

.feature-demo h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-demo p {
    opacity: 0.8;
    line-height: 1.6;
}

/* Features Section */
.features-section {
    padding: 6rem 0;
    background: #ffffff;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #1a202c;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #4a5568;
    margin-bottom: 5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 기능 소개 컨테이너 */
.feature-showcase-container {
    display: flex;
    flex-direction: column;
    gap: 6rem;
}

/* 각 기능 소개 행 */
.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 2rem;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.feature-row:hover {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(124, 58, 237, 0.1);
}

/* 짝수 행은 이미지와 텍스트 위치 반대로 */
.feature-row.reverse {
    grid-template-columns: 1fr 1fr;
    direction: rtl;
}

.feature-row.reverse > * {
    direction: ltr;
}

/* 앱 스크린샷 컨테이너 */
.feature-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 40px;
    padding: 5px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 30px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* 실제 앱 화면 이미지 스타일 */
.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 기능 설명 컨테이너 */
.feature-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    width: fit-content;
}

.feature-name {
    font-size: 2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 1rem;
}

.feature-description {
    font-size: 1.1rem;
    color: #4a5568;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-highlights {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.highlight-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
    border-radius: 10px;
    flex-shrink: 0;
}

.highlight-icon span {
    font-size: 1.2rem;
}

.highlight-content {
    flex: 1;
}

.highlight-title {
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 0.25rem;
}

.highlight-text {
    font-size: 0.95rem;
    color: #6b7280;
    line-height: 1.5;
}

/* 플로팅 요소들 */
.floating-element {
    position: absolute;
    background: white;
    border-radius: 10px;
    padding: 0.75rem 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    animation: float 3s ease-in-out infinite;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.floating-element.top-left {
    top: -20px;
    left: -20px;
}

.floating-element.bottom-right {
    bottom: -20px;
    right: -20px;
    animation-delay: 1.5s;
}

/* 반응형 디자인 */
@media (max-width: 968px) {
    .feature-row,
    .feature-row.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }

    .feature-visual {
        margin-bottom: 2rem;
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .feature-name {
        font-size: 1.75rem;
    }
}

/* 애니메이션 클래스 */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* CTA 버튼 */
.feature-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, #7c3aed 0%, #3730a3 100%);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.feature-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(124, 58, 237, 0.3);
}

/* CTA Section */
.cta-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #7c3aed 0%, #3730a3 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    margin: 0 1rem;
}

.btn-primary {
    background: white;
    color: #7c3aed;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #7c3aed;
}

/* Footer */
footer {
    background: #1a202c;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer-content p {
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .audience-content {
        grid-template-columns: 1fr;
    }

    .store-buttons {
        flex-direction: column;
        align-items: center;
    }

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

/* Animation Classes */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}