html {scroll-behavior: smooth;}

body, nav, main, footer, ul, li, h1, h2, address, p, ul, li, section, div, video, span, button, a, figure, img, iframe {margin: 0; padding: 0; box-sizing: border-box;}
body {font-family: "Roboto", sans-serif; font-optical-sizing: auto; font-weight: normal; font-style: normal; font-variation-settings: "wdth" 100; font-size: 18px; line-height: 1.6; color: #333; overflow-x: hidden; }
li {list-style: none;}
a {text-decoration: none;}
button {border: none; cursor: pointer;}

header {position: fixed; top: 0; width: 100%; z-index: 1000; padding: 2rem 0; background: rgba(0, 0, 0, 0.1); backdrop-filter: blur(20px); transition: all 0.3s ease;}
header.scrolled {background: rgba(0, 0, 0, 0.95); padding: 1rem 0;}
header nav {display: flex; justify-content: space-between; align-items: center; max-width: 1400px; margin: 0 auto; padding: 0 3rem;}
/* header nav .logo {font-size: 2rem; font-weight: 700; color: #fff; text-decoration: none; letter-spacing: -0.02em;} */
header nav .logo {background-image: url("../images/logo_v3_white.png"); background-size: contain; background-repeat: no-repeat; width: 200px; font-size: 0; height: 50px;}

header nav #gnb {position: fixed; top: 0; left: -100%; width: 100%; height: 100vh; background: rgba(0, 0, 0, 0.98); flex-direction: column; justify-content: center; align-items: center; transition: left 0.3s ease; display: flex;  gap: 3rem;}
header nav #gnb.active {left: 0;}
header nav #gnb a {color: #fff; font-weight: 500; font-size: 1.8rem; transition: all 0.3s ease; position: relative;}
header nav #gnb a::after {content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px; background: #009fe8; transition: width 0.3s ease;}
header nav #gnb a:hover {color: #009fe8;}
header nav #gnb a:hover::after {width: 100%;}

header nav #menu, #menu span {display: inline-block; transition: all .4s; font-size: 0; background-color: transparent;}
header nav #menu {position: relative; width: 35px; height: 26px; top: 0px; right: 0;}
header nav #menu span {position: absolute; left: 0; width: 100%; height: 2px; background-color: #fff; border-radius: 4px;}
header nav #menu.active span {background-color: white;}
header nav #menu span:nth-of-type(1) {top: 0;}
header nav #menu span:nth-of-type(2) {top: 12px;}
header nav #menu span:nth-of-type(3) {bottom: 0;}
header nav #menu.active span:nth-of-type(1) {-webkit-transform: translateY(12px) rotate(-45deg); transform: translateY(12px) rotate(-45deg);}
header nav #menu.active span:nth-of-type(2) {opacity: 0;}
header nav #menu.active span:nth-of-type(3) {-webkit-transform: translateY(-12px) rotate(45deg); transform: translateY(-12px) rotate(45deg);}

.section {height: 100vh; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; padding-top: 50px; padding-bottom: 50px;}
.container {max-width: 1400px; width: 100%; margin: 0 auto; padding: 0 3rem;}
.highlight-text {font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 700; color: #667eea; margin-top: 3rem;}

.fade-in {opacity: 0; transform: translateY(50px); transition: all 0.8s ease;}
.fade-in.visible {opacity: 1; transform: translateY(0);}
.slide-in-left {opacity: 0; transform: translateX(-100px); transition: all 0.8s ease;}
.slide-in-left.visible {opacity: 1; transform: translateX(0);}
.slide-in-right {opacity: 0; transform: translateX(100px); transition: all 0.8s ease;}
.slide-in-right.visible {opacity: 1; transform: translateX(0);}



/* Hero Section */
.hero {background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%); color: white; text-align: center; position: relative;}
.hero::before {content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; animation: float 8s ease-in-out infinite; background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><circle cx="200" cy="200" r="3" fill="rgba(255,255,255,0.1)"/><circle cx="800" cy="300" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="400" cy="600" r="4" fill="rgba(255,255,255,0.1)"/><circle cx="600" cy="800" r="2" fill="rgba(255,255,255,0.1)"/></svg>');}
@keyframes float {0%, 100% {transform: translateY(0px) rotate(0deg);} 50% {transform: translateY(-30px) rotate(180deg);}}
.hero-content {z-index: 1; position: relative; opacity: 0; transform: translateY(50px); animation: fadeInUp 1.2s ease 0.3s forwards;}
@keyframes fadeInUp {to {opacity: 1;transform: translateY(0);}}
.hero h1 {font-size: clamp(3rem, 8vw, 8rem); font-weight: 900; margin-bottom: 2rem; letter-spacing: -0.05em; line-height: 0.9;}
.hero .subtitle {font-size: clamp(1.2rem, 3vw, 2rem); font-weight: 300; margin-bottom: 3rem; opacity: 0.9; max-width: 800px; margin-left: auto; margin-right: auto;}

.scroll-indicator {position: absolute; bottom: 3rem; left: 50%; transform: translateX(-50%); color: rgba(255, 255, 255, 0.7); font-size: 0.9rem; display: flex; flex-direction: column; align-items: center; gap: 1rem; animation: bounce 2s infinite;}
.scroll-indicator::after {content: ''; width: 2px; height: 30px; background: rgba(255, 255, 255, 0.5); animation: scrollLine 2s infinite;}
@keyframes bounce {0%, 20%, 50%, 80%, 100% {transform: translateX(-50%) translateY(0);} 40% {transform: translateX(-50%) translateY(-10px);} 60% {transform: translateX(-50%) translateY(-5px);}}
@keyframes scrollLine {0% {height: 0;} 50% {height: 30px;} 100% {height: 0;}}


#services {background: #fff; color: #333;}
#services .grid_container {display: grid; grid-template-columns: 1fr; height: 100vh;}
#services .grid_container .item {display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 3rem 2rem; text-align: center; position: relative; transition: all 0.6s ease; color: white;}
#services .grid_container .item:nth-child(1) {background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);}
#services .grid_container .item:nth-child(2) {background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);}
#services .grid_container .item .number {font-size: 4rem; font-weight: 900; opacity: 0.1; position: absolute; top: 1rem; left: 2rem; line-height: 1;}
#services .grid_container .item h2 {font-size: clamp(2rem, 4vw, 4rem); font-weight: 900; margin-bottom: 2rem; letter-spacing: -0.02em;}
#services .grid_container .item p {font-size: clamp(1rem, 2vw, 1.4rem); font-weight: 300; margin-bottom: 2rem; opacity: 0.9;}
#services .grid_container .item ul {font-size: 1.1rem; font-weight: 400;}
#services .grid_container .item ul li {margin-bottom: 1rem; opacity: 0.8;}

#about {background: #1a1a1a; color: #fff; text-align: center;}
#about .content {max-width: 1000px; margin: 0 auto;}
#about h2 {font-size: clamp(3rem, 6vw, 6rem); font-weight: 900; margin-bottom: 3rem; letter-spacing: -0.03em; line-height: 1.1;}
#about p {font-size: clamp(1.2rem, 2.5vw, 1.8rem); font-weight: 300; margin-bottom: 2rem; opacity: 0.8;}

#partners {background: #f5f5f5; color: #333; height: auto;}
#partners .content {text-align: center; max-width: 1200px; margin: 0 auto;}
#partners h2 {font-size: clamp(3rem, 6vw, 6rem); font-weight: 900; margin-bottom: 4rem; letter-spacing: -0.03em;}
#partners .partners-grid {display: grid; grid-template-columns: 1fr; gap: 2rem;}
#partners .partners-grid .partner-card {background: white; padding: 2rem; border-radius: 20px; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1); transition: all 0.4s ease; text-align: left;}
#partners .partners-grid .partner-card:hover {transform: translateY(-10px); box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);}
#partners .partners-grid .partner-card .partner-icon {font-size: 3rem; margin-bottom: 1.5rem;}
#partners .partners-grid .partner-card h3 {font-size: 1.8rem; font-weight: 700; margin-bottom: 1.5rem; color: #2c3e50;}
#partners .partners-grid .partner-card p {font-size: 1.1rem; color: #666; margin-bottom: 1rem;}

#contact {background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%); color: white; text-align: center;}
#contact h2 {font-size: clamp(3rem, 6vw, 6rem); font-weight: 900; margin-bottom: 3rem; letter-spacing: -0.03em;}
#contact .contact-description {font-size: clamp(1.2rem, 2.5vw, 1.8rem); font-weight: 300; margin-bottom: 4rem; opacity: 0.9; max-width: 800px; margin-left: auto; margin-right: auto;}
#contact .contact-container {display: grid; grid-template-columns: 1fr;  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; max-width: 1000px; margin: 0 auto;}
#contact .contact-container .item {background: rgba(255, 255, 255, 0.1); padding: 2.5rem; border-radius: 15px; backdrop-filter: blur(10px); border: 1px solid rgba(255, 255, 255, 0.1); transition: all 0.3s ease;}
#contact .contact-container .item:hover {background: rgba(255, 255, 255, 0.15); transform: translateY(-5px);}
#contact .contact-container .item h3 {font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem;}
#contact .contact-container .item p {opacity: 0.8; font-size: 1.1rem;}


/* Scroll to Top Button */
.scroll-to-top {position: fixed; bottom: 30px; right: 30px; background-color: #FF4444; color: white; width: 50px; height: 50px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.3s ease; box-shadow: 0 2px 10px rgba(255, 68, 68, 0.3); z-index: 1000;}
.scroll-to-top:hover {transform: translateY(-3px); box-shadow: 0 4px 20px rgba(255, 68, 68, 0.4);}

/* footer {background: red;} */
/* footer {background: #f5f5f5; color: #666; text-align: center; padding: 2rem 0; font-size: 0.9rem;} */
/* Footer Container - Mobile First */
.footer-container {max-width: 1400px; margin: 0 auto; background-color: white; padding: 40px 30px; border-radius: 20px; }

/* Main Footer Content - Mobile First */
.footer-content {display: grid; grid-template-columns: 1fr; gap: 40px;}

/* Left Section */
footer h2 {font-size: 30px; margin-bottom: 20px; color: #333;}
footer h2 .highlight {color: #FF4444;}
.footer-links {display: flex; flex-direction: column; gap: 25px;}
.footer-links a {color: #333; text-decoration: none; font-size: 18px; font-weight: 500; transition: all 0.3s ease; position: relative; display: inline-block; width: fit-content;}
.footer-links a::after {content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background-color: #FF4444; transition: width 0.3s ease;}
.footer-links a:hover {color: #FF4444;}
.footer-links a:hover::after {width: 100%;}

/* Right Section - Mobile First */
.footer-right {text-align: left;}
.contact-info {color: #666; line-height: 1.8; font-size: 15px; margin-top: 30px;}
.contact-info p {margin-bottom: 8px;}
.contact-info a {color: #666; text-decoration: none; transition: color 0.3s ease;}
.contact-info a:hover {color: #FF4444;}
.copyright {margin-bottom: 40px; font-size: 13px; color: #999;}

/* Bottom Section - Tagline - Mobile First */
.footer-bottom {text-align: center; padding-top: 40px; border-top: 1px solid #eee; position: relative;}
.tagline {font-size: 48px; font-weight: 900; color: #FF4444; letter-spacing: -2px; line-height: 1; margin-bottom: 20px; animation: fadeInUp 1s ease-out;}
@keyframes fadeInUp {from {opacity: 0; transform: translateY(20px);} to {opacity: 1; transform: translateY(0);}}

/* See All Story Button */
.story-button {display: inline-flex; align-items: center; gap: 10px; background-color: white; border: 2px solid #FF4444; color: #FF4444; padding: 12px 30px; border-radius: 30px; font-weight: 600; font-size: 16px; cursor: pointer; transition: all 0.3s ease; position: relative; overflow: hidden;}
.story-button::before {content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background-color: #FF4444; transition: left 0.3s ease; z-index: -1;}
.story-button:hover {color: white; background-color: #FF4444;}
.story-button:hover::before {left: 0;}
.story-button svg {width: 20px; height: 20px; transition: transform 0.3s ease;}
.story-button:hover svg {transform: translateX(5px);}
        

@media (min-width: 768px) {
    header nav .logo {width: 270px;}
    .container {padding: 0 3rem}
    header nav #menu {display: none;}
    header nav #gnb {position: static; height: auto; background: none; flex-direction: row; justify-content: right; align-items: center; display: flex;  gap: 3rem; }
    header nav #gnb a {font-size: 1.1rem;}
    #services .grid_container {grid-template-columns: 1fr 1fr;}
    #services .grid_container .item {padding: 4rem;}
    #services .grid_container .item .number {font-size: 8rem; top: 2rem; left: 4rem;}
    #partners .partners-grid {grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 3rem;}
    #partners .partners-grid .partner-card {padding: 3rem;}

    .language-selector {position: absolute; top: 20px; right: 20px; justify-content: flex-end; margin-bottom: 0;}
    .footer-container {padding: 60px;}
    .footer-content {grid-template-columns: 1fr 1fr; gap: 60px;}
    .footer-right {text-align: right;}
    .footer-links {flex-direction: row; justify-content: flex-end;}
    .tagline {font-size: 72px;}
}