/* 웹 폰트 import */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS 커스텀 속성 - 디자인 토큰 */
:root {
    /* 색상 팔레트 */
    --primary-color: #FF6B35;
    --primary-light: #FF8C61;
    --primary-dark: #E55525;
    --secondary-color: #FFB366;
    --accent-color: #4ECDC4;
    --success-color: #27AE60;
    --warning-color: #F39C12;
    
    /* 그레이스케일 */
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #E5E5E5;
    --gray-300: #D4D4D4;
    --gray-400: #A3A3A3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    
    /* 그라데이션 */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-subtle: linear-gradient(135deg, #FAFAFA, #F0F0F0);
    --gradient-warm: linear-gradient(135deg, #FFF5F0, #FFE8D6);
    
    /* 타이포그래피 */
    --font-primary: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --font-heading: 'Inter', 'Noto Sans KR', sans-serif;
    
    /* 간격 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* 둥근 모서리 */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    
    /* 그림자 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px rgba(0, 0, 0, 0.15);
    
    /* 전환 */
    --transition-fast: 0.15s ease-out;
    --transition-base: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
}

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

body {
    font-family: var(--font-primary);
    line-height: 1.7;
    color: var(--gray-800);
    background: var(--gray-50);
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* 글로벌 텍스트 선택 스타일 */
::selection {
    background-color: rgba(255, 107, 53, 0.2);
    color: var(--gray-900);
}

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

/* Modern Layout System */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.flex {
    display: flex;
    gap: var(--spacing-md);
}

.flex-center {
    align-items: center;
    justify-content: center;
}

.flex-between {
    justify-content: space-between;
}

.flex-wrap {
    flex-wrap: wrap;
}

header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
}

.logo-image {
    height: 60px;
    width: auto;
    transition: var(--transition-base);
}

.logo-image:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-links a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    transition: var(--transition-base);
    padding: var(--spacing-xs) 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
    border-radius: 2px;
}

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

.nav-links a:hover::after {
    width: 100%;
}

main {
    margin-top: 80px;
}

.hero {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.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 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%" r="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity=".1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="80" fill="url(%23a)"/></svg>') no-repeat center center;
    background-size: cover;
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(120deg); }
    66% { transform: translateY(10px) rotate(240deg); }
}

.main-slogan {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--spacing-xl);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

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

.hero-gallery {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    position: relative;
    z-index: 2;
    place-items: center;
}

.main-products {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    animation: slideInFromBottom 1s ease-out 0.3s both;
}

.additional-showcase {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    opacity: 0.9;
    animation: slideInFromBottom 1s ease-out 0.6s both;
}

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

.cup-image.featured {
    width: 240px;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    transition: var(--transition-base);
    border: 3px solid rgba(255,255,255,0.3);
    position: relative;
    overflow: hidden;
}

.cup-image.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: var(--transition-slow);
}

.cup-image.featured:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 30px 60px rgba(0,0,0,0.3);
}

.cup-image.featured:hover::before {
    left: 100%;
}

.showcase-item {
    width: 160px;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
    opacity: 0.8;
    filter: grayscale(20%);
}

.showcase-item:hover {
    transform: scale(1.08) translateY(-10px);
    opacity: 1;
    filter: grayscale(0%);
    box-shadow: var(--shadow-xl);
}

.brand-identity {
    margin-top: var(--spacing-xl);
    text-align: center;
    animation: fadeIn 1s ease-out 0.9s both;
}

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

.brand-mark {
    width: 140px;
    height: auto;
    opacity: 0.8;
    transition: var(--transition-base);
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

.brand-mark:hover {
    opacity: 1;
    transform: scale(1.1);
}

.intro-text {
    font-size: 1.3rem;
    margin-top: var(--spacing-lg);
    font-weight: 400;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out 0.5s both;
}

section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.about {
    background: linear-gradient(135deg, #ffffff 0%, #fafafa 100%);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
}

.about h2, .products h2, .donation h2, .contact h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    color: var(--gray-800);
    font-weight: 600;
    letter-spacing: -0.02em;
    position: relative;
}

.about h2::after, .products h2::after, .donation h2::after, .contact h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

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

.school-identity {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--gradient-warm);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.school-logo {
    width: 80px;
    height: 80px;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
    transition: var(--transition-base);
}

.school-logo:hover {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 6px 12px rgba(0,0,0,0.15));
}

.school-info h3 {
    color: var(--primary-color);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    margin: 0;
    margin-bottom: var(--spacing-xs);
}

.school-subtitle {
    color: var(--gray-600);
    font-size: 1rem;
    margin: 0;
    font-weight: 500;
}

.mission-statement {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--gray-50), #ffffff);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.about-content p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.meaning, .process {
    margin: 3rem 0;
    padding: 2rem;
    background: #ecf0f1;
    border-radius: 10px;
}

.meaning h3, .process h3 {
    color: #d35400;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.detailed-process {
    margin-top: 2rem;
}

.process-stage {
    margin-bottom: var(--spacing-2xl);
    background: linear-gradient(145deg, #ffffff, #fafafa);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: var(--transition-base);
    position: relative;
    border: 1px solid rgba(255,255,255,0.8);
}

.process-stage::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-base);
}

.process-stage:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(255, 107, 53, 0.15);
}

.process-stage:hover::before {
    transform: scaleX(1);
}

.stage-header {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xl) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    position: relative;
}

.stage-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.stage-number {
    background: rgba(255,255,255,0.25);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-heading);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255,255,255,0.3);
    transition: var(--transition-base);
}

.process-stage:hover .stage-number {
    transform: rotate(360deg) scale(1.1);
    background: rgba(255,255,255,0.35);
}

.stage-header h4 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    font-family: var(--font-heading);
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.stage-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    align-items: start;
}

.stage-image {
    text-align: center;
    position: relative;
}

.stage-image::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: var(--gradient-subtle);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0;
    transition: var(--transition-base);
}

.stage-image:hover::before {
    opacity: 1;
}

.process-img {
    width: 100%;
    max-width: 320px;
    height: 220px;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
    position: relative;
    z-index: 1;
}

.process-img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.stage-description p {
    color: var(--gray-800);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.stage-description ul {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-md);
}

.stage-description li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    line-height: 1.7;
    color: var(--gray-600);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.stage-description li:hover {
    color: var(--gray-800);
    transform: translateX(5px);
}

.stage-description li:before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--gradient-primary);
    border-radius: 50%;
    transition: var(--transition-base);
}

.stage-description li:hover:before {
    transform: translateY(-50%) scale(1.3);
    box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.2);
}

.process-philosophy {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--gradient-warm);
    border-radius: var(--radius-xl);
    border: 2px solid transparent;
    background-clip: padding-box;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.process-philosophy::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    margin: -2px;
    border-radius: inherit;
    z-index: -1;
}

.process-philosophy h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.4rem;
    font-family: var(--font-heading);
    font-weight: 600;
}

.process-philosophy p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--gray-700);
    font-style: italic;
    max-width: 800px;
    margin: 0 auto;
}

.products {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 50%, #ffffff 100%);
    position: relative;
}

.products::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.6;
}

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

.product {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
}

.product h3 {
    color: #d35400;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.product-images-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1rem 0;
}

.product-img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
}

.product-img:hover {
    transform: scale(1.05);
}

.product-showcase {
    margin-bottom: 3rem;
    text-align: center;
}

.showcase-header {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
}

.brand-logo {
    width: 150px;
    height: auto;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.showcase-intro {
    font-size: 1.2rem;
    color: #6c757d;
    font-weight: 300;
    margin: 0;
}

.product-lifestyle,
.design-concepts {
    margin-top: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
    text-align: center;
}

.lifestyle-img,
.concept-img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    margin-bottom: 1rem;
}

.product-message {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #e3f2fd, #f3e5f5);
    border-radius: 10px;
    border-left: 4px solid #d35400;
}

.product-message p {
    font-style: italic;
    font-size: 1.1rem;
    color: #2c3e50;
    margin: 0;
    font-weight: 500;
}

.donation {
    background: #fff;
}

.donation-content {
    max-width: 800px;
    margin: 0 auto;
}

.philosophy, .donation-history {
    margin: 2rem 0;
    padding: 1.5rem;
    background: #f8f9fa;
    border-left: 4px solid #d35400;
    border-radius: 5px;
}

.philosophy h3, .donation-history h3 {
    color: #d35400;
    margin-bottom: 1rem;
}

.donation-history ul {
    list-style-type: none;
    padding-left: 0;
}

.donation-history li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

.donation-history li:before {
    content: "✓ ";
    color: #27ae60;
    font-weight: bold;
}

.donation-certificates {
    margin-top: 2rem;
}

.certificate-item {
    margin-bottom: 3rem;
    padding: 2rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.certificate-item h4 {
    color: #d35400;
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 1.3rem;
}

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

.certificate-doc {
    text-align: center;
}

.certificate-doc p {
    margin-top: 1rem;
    font-weight: 500;
    color: #2c3e50;
}

.certificate-img {
    max-width: 100%;
    height: auto;
    max-height: 400px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    border: 3px solid #d35400;
    transition: transform 0.3s ease;
}

.certificate-img:hover {
    transform: scale(1.02);
}

.future-plan {
    font-style: italic;
    text-align: center;
    color: #7f8c8d;
    margin-top: 2rem;
}

.contact {
    background: linear-gradient(135deg, var(--gray-800), var(--gray-900));
    color: var(--gray-100);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 107, 53, 0.05) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

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

.contact h2 {
    color: var(--gray-50);
    position: relative;
    z-index: 1;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.future-plans, .contact-details {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.1);
    transition: var(--transition-base);
}

.future-plans:hover, .contact-details:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.plan-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.school-logo-small {
    width: 40px;
    height: 40px;
    filter: brightness(0.8) contrast(1.2) drop-shadow(0 2px 4px rgba(0,0,0,0.3));
    transition: var(--transition-base);
}

.school-logo-small:hover {
    transform: rotate(360deg) scale(1.2);
    filter: brightness(1) contrast(1.2) drop-shadow(0 4px 8px rgba(0,0,0,0.4));
}

.future-plans h3, .contact-details h3 {
    color: var(--secondary-color);
    margin: 0;
    font-family: var(--font-heading);
    font-size: 1.3rem;
}

.plan-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.plan-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.05);
    transition: var(--transition-base);
}

.plan-item:hover {
    background: rgba(255,255,255,0.1);
    transform: translateX(10px);
}

.plan-icon-img {
    width: 24px;
    height: 24px;
    min-width: 30px;
    filter: brightness(0.8) contrast(1.2);
    transition: var(--transition-base);
}

.plan-icon-img:hover {
    transform: scale(1.1) rotate(5deg);
    filter: brightness(1) contrast(1.2);
}

.plan-icon-text {
    font-size: 0.9rem;
    font-weight: 600;
    min-width: 30px;
    color: var(--primary-color);
    background: rgba(255, 107, 53, 0.1);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.plan-icon-text:hover {
    background: rgba(255, 107, 53, 0.2);
    transform: scale(1.05);
}

.plan-item p {
    margin: 0;
    font-size: 1rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.05);
    transition: var(--transition-base);
}

.contact-item:hover {
    background: rgba(255,255,255,0.1);
}

.contact-icon-text {
    font-size: 0.9rem;
    font-weight: 600;
    min-width: 30px;
    color: var(--secondary-color);
    background: rgba(255, 179, 102, 0.1);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    text-align: center;
}

.contact-icon-text:hover {
    background: rgba(255, 179, 102, 0.2);
    transform: scale(1.05);
    color: var(--primary-light);
}

.contact-item p {
    margin: 0;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--gray-300);
}

.contact-details a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-base);
}

.contact-details a:hover {
    color: var(--primary-light);
    text-decoration: underline;
    transform: translateX(5px);
    display: inline-block;
}

.school-affiliation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
    border: 1px solid rgba(255,255,255,0.1);
}

.school-logo-contact {
    width: 35px;
    height: 35px;
    filter: brightness(0) invert(1) drop-shadow(0 2px 4px rgba(0,0,0,0.2));
    transition: var(--transition-base);
}

.school-logo-contact:hover {
    transform: scale(1.3) rotate(10deg);
    filter: brightness(0) invert(1) drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}

.school-affiliation p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--gray-400);
    text-align: center;
}

footer {
    background: #34495e;
    color: #ecf0f1;
    text-align: center;
    padding: 2rem 0;
}

/* 스크롤 바 스타일링 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* 푸터 개선 */
footer {
    background: linear-gradient(135deg, var(--gray-800), var(--gray-900));
    color: var(--gray-100);
    text-align: center;
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

footer p {
    font-size: 1rem;
    font-weight: 400;
    opacity: 0.9;
}

/* 반응형 디자인 개선 */
@media (max-width: 768px) {
    :root {
        --spacing-xs: 0.25rem;
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-links {
        gap: var(--spacing-lg);
    }
    
    .hero {
        min-height: 80vh;
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-gallery {
        gap: var(--spacing-lg);
    }
    
    .main-products {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-lg);
    }
    
    .additional-showcase {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .stage-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .process-img {
        max-width: 280px;
        height: 200px;
    }
    
    .stage-header {
        padding: var(--spacing-lg) var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .stage-number {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .school-identity {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .school-logo {
        width: 60px;
        height: 60px;
    }
    
    .plan-header {
        justify-content: center;
    }
    
    .contact-methods {
        gap: var(--spacing-md);
    }
    
    .school-affiliation {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    section {
        padding: var(--spacing-2xl) 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .main-slogan {
        font-size: 1.5rem;
    }
    
    .cup-image.featured {
        width: 180px;
        height: 230px;
    }
    
    .showcase-item {
        width: 120px;
        height: 150px;
    }
    
    .brand-logo {
        width: 100px;
    }
    
    .brand-mark {
        width: 80px;
    }
    
    .product-images-grid {
        grid-template-columns: 1fr;
    }
}