/*
Theme Name: Flavor Gate.io
Description: 게이트아이오 전용 테마 - 그린 테마, 그라디언트 보더 카드, Anti-Gravity 플로팅
Version: 1.0
Author: Goksan
*/

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

:root {
    --primary: #22C55E;
    --primary-dark: #16A34A;
    --primary-light: #4ADE80;
    --gradient: linear-gradient(135deg, #22C55E 0%, #16A34A 100%);
    --gradient-accent: linear-gradient(135deg, #22C55E 0%, #059669 50%, #0D9488 100%);
    --text-dark: #1F2937;
    --text-gray: #4B5563;
    --text-light: #9CA3AF;
    --bg-beige: #FAF9F7;
    --bg-warm: #F5F4F0;
    --bg-white: #FFFFFF;
    --border-gradient: linear-gradient(135deg, #22C55E, #0D9488, #22C55E);
    --shadow-sm: 0 2px 8px rgba(34, 197, 94, 0.1);
    --shadow-md: 0 4px 20px rgba(34, 197, 94, 0.15);
    --shadow-lg: 0 8px 40px rgba(34, 197, 94, 0.2);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'IBM Plex Sans KR', sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    background: var(--bg-beige);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

img {
    max-width: 100%;
    height: auto;
}

/* Anti-Gravity Floating Animation */
@keyframes antiGravityFloat {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    25% {
        transform: translateY(-15px) rotate(1deg);
    }
    50% {
        transform: translateY(-8px) rotate(-1deg);
    }
    75% {
        transform: translateY(-20px) rotate(0.5deg);
    }
}

@keyframes float3D {
    0%, 100% {
        transform: translateY(0) translateZ(0) rotateX(0) rotateY(0);
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }
    50% {
        transform: translateY(-20px) translateZ(30px) rotateX(3deg) rotateY(3deg);
        box-shadow: 0 30px 60px rgba(0,0,0,0.15);
    }
}

@keyframes bubbleFloat {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.4; }
    33% { transform: translate(30px, -40px) scale(1.1); opacity: 0.6; }
    66% { transform: translate(-20px, -80px) scale(0.9); opacity: 0.3; }
}

.floating {
    animation: antiGravityFloat 6s ease-in-out infinite;
    will-change: transform;
}

.floating:nth-child(1) { animation-delay: 0s; animation-duration: 5s; }
.floating:nth-child(2) { animation-delay: 0.5s; animation-duration: 6s; }
.floating:nth-child(3) { animation-delay: 1s; animation-duration: 7s; }
.floating:nth-child(4) { animation-delay: 1.5s; animation-duration: 5.5s; }

.float-3d {
    animation: float3D 8s ease-in-out infinite;
    transform-style: preserve-3d;
    perspective: 1000px;
}

/* Floating Bubbles Background */
.floating-bubbles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bubble {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34, 197, 94, 0.15) 0%, transparent 70%);
    animation: bubbleFloat 10s ease-in-out infinite;
}

.bubble:nth-child(1) { width: 100px; height: 100px; top: 10%; left: 10%; animation-duration: 12s; }
.bubble:nth-child(2) { width: 150px; height: 150px; top: 60%; left: 80%; animation-duration: 15s; animation-delay: 2s; }
.bubble:nth-child(3) { width: 80px; height: 80px; top: 30%; left: 70%; animation-duration: 10s; animation-delay: 4s; }
.bubble:nth-child(4) { width: 120px; height: 120px; top: 80%; left: 20%; animation-duration: 14s; animation-delay: 1s; }
.bubble:nth-child(5) { width: 60px; height: 60px; top: 50%; left: 50%; animation-duration: 11s; animation-delay: 3s; }

/* Header - Fixed Transparent */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    background: transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    padding: 0.7rem 0;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

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

.main-nav a {
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
    padding: 0.5rem 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

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

.main-nav a:hover {
    color: var(--primary);
}

/* Icon + Text Button */
.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--gradient);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

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

.btn-icon svg, .btn-icon .icon {
    width: 20px;
    height: 20px;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: transparent;
    color: var(--primary);
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid var(--primary);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

/* Gradient Border Card */
.gradient-card {
    position: relative;
    background: var(--bg-white);
    border-radius: 20px;
    padding: 2rem;
    z-index: 1;
}

.gradient-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--border-gradient);
    border-radius: 22px;
    z-index: -1;
    background-size: 200% 200%;
    animation: gradientShift 4s ease infinite;
}

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

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

/* Hero Section - Full Wide */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 4rem;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, var(--bg-beige) 0%, var(--bg-warm) 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.hero-title span {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

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

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    background: var(--bg-white);
    border-radius: 24px;
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.hero-card::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: var(--border-gradient);
    border-radius: 27px;
    z-index: -1;
    background-size: 200% 200%;
    animation: gradientShift 4s ease infinite;
}

.hero-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.5rem;
}

.hero-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-gray);
    margin-bottom: 0.5rem;
}

.hero-card-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
}

/* Section Common */
.section {
    padding: 6rem 2rem;
    position: relative;
    z-index: 1;
}

.section-white {
    background: var(--bg-white);
}

.section-beige {
    background: var(--bg-beige);
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(34, 197, 94, 0.1);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.about-content p {
    font-size: 1.125rem;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-points {
    list-style: none;
    margin-bottom: 2rem;
}

.about-points li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    font-weight: 500;
}

.about-points li .icon {
    width: 28px;
    height: 28px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* How It Works - Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 60px;
    left: 15%;
    right: 15%;
    height: 3px;
    background: var(--gradient);
    z-index: 0;
}

.step-card {
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 2rem;
    transition: all 0.3s ease;
}

.step-number {
    width: 70px;
    height: 70px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.step-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.step-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2.5rem;
    transition: all 0.4s ease;
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* Benefits Section */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.benefit-card {
    padding: 2.5rem;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    flex-shrink: 0;
}

.benefit-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.benefit-content p {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.benefit-stat {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* Trust Badges / Stats */
.stats-section {
    background: var(--gradient);
    padding: 5rem 2rem;
}

.stats-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

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

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    padding: 2rem;
}

.testimonial-stars {
    color: #FBBF24;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.testimonial-quote {
    font-size: 1.05rem;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
}

.testimonial-info h4 {
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-dark);
}

.testimonial-info p {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0;
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(34, 197, 94, 0.2);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-dark);
}

.faq-icon {
    width: 30px;
    height: 30px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 2rem 1.5rem;
    color: var(--text-gray);
    line-height: 1.8;
}

/* CTA Section */
.cta-section {
    padding: 6rem 2rem;
    text-align: center;
}

.cta-card {
    max-width: 800px;
    margin: 0 auto;
    background: var(--gradient);
    border-radius: 30px;
    padding: 4rem 3rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.cta-card h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.cta-card p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 3rem;
    background: white;
    color: var(--primary);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

/* Footer */
.site-footer {
    background: var(--text-dark);
    color: white;
    padding: 4rem 2rem 2rem;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary);
}

.footer-brand p {
    color: var(--text-light);
    line-height: 1.7;
}

.footer-links h4 {
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links a {
    color: var(--text-light);
    display: block;
    padding: 0.4rem 0;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

.footer-legal a {
    color: var(--text-light);
    margin-left: 1.5rem;
}

.footer-legal a:hover {
    color: var(--primary);
}

/* Blog & Page Styles */
.page-header {
    background: var(--gradient);
    padding: 8rem 2rem 4rem;
    text-align: center;
    color: white;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
}

.page-content {
    padding: 4rem 2rem;
    background: var(--bg-white);
}

.page-container {
    max-width: 800px;
    margin: 0 auto;
}

.page-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 2rem 0 1rem;
    color: var(--text-dark);
}

.page-content p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--text-gray);
}

.page-content ul, .page-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.page-content li {
    margin-bottom: 0.75rem;
    color: var(--text-gray);
}

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

.blog-card {
    padding: 2rem;
    transition: all 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-8px);
}

.blog-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.blog-card h3 a {
    color: var(--text-dark);
}

.blog-card h3 a:hover {
    color: var(--primary);
}

.blog-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.blog-card .date {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid rgba(34, 197, 94, 0.2);
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container,
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

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

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

    .steps-grid::before {
        display: none;
    }

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

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

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

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }

    .hero-section {
        padding: 6rem 1.5rem 3rem;
    }

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

    .section {
        padding: 4rem 1.5rem;
    }

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

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

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }

    .stat-value {
        font-size: 2rem;
    }

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

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

    .footer-legal a {
        margin: 0 0.75rem;
    }

    .btn-icon, .btn-outline {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }

    .cta-card {
        padding: 3rem 2rem;
    }

    .cta-card h2 {
        font-size: 1.75rem;
    }
}

/* Accessibility - Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .floating,
    .float-3d,
    .bubble,
    .gradient-card::before {
        animation: none;
    }
}