/* BNI 비저너리 챕터 - Global Healthcare Manufacturing & Trade */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;600;700&family=Montserrat:wght@400;500;600;700;800&display=swap');

/* Custom CSS Variables */
:root {
    --primary-blue: #2563eb;
    --primary-green: #059669;
    --secondary-blue: #1e40af;
    --secondary-green: #047857;
    --accent-yellow: #fbbf24;
    --accent-orange: #f97316;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --bg-light: #f9fafb;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #2563eb, #059669);
    --gradient-hero: linear-gradient(135deg, #1e3a8a, #1e40af, #059669);
    --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-strong: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --border-radius: 1rem;
    --border-radius-lg: 1.5rem;
}

/* Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    scroll-behavior: smooth;
}

.font-noto {
    font-family: 'Noto Sans KR', sans-serif;
}

.font-montserrat {
    font-family: 'Montserrat', sans-serif;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-blue);
}

/* Navigation Styles */
#navbar {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-medium);
}

/* Mobile Menu */
#mobile-menu {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    margin-top: 1rem;
    box-shadow: var(--shadow-medium);
}

/* Hero Section Enhancements */
#hero {
    position: relative;
    background: var(--gradient-hero);
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(139, 92, 246, 0.2) 0%, transparent 50%);
    animation: gradientShift 20s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

/* Floating Animation for Hero Elements */
.animate-float {
    animation: float 6s ease-in-out infinite;
}

/* Hero Section Optimizations */
#hero {
    padding: 0;
}

#hero .space-y-6 > * + * {
    margin-top: 1rem;
}

/* Compact layout for faster rendering */
#hero h1, #hero h2, #hero h3 {
    margin-bottom: 0.5rem;
}

#hero .animate-float {
    animation-duration: 4s; /* Faster float animation */
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Hero Section Enhancements */
#hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    will-change: transform;
}

#hero .container {
    width: 100%;
    max-width: 100%;
}

/* Performance Optimizations */
#hero-content, #hero-skeleton {
    will-change: opacity, transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.progressive-load {
    will-change: opacity, transform;
}

/* Responsive Title Adjustments */
@media (max-width: 640px) {
    #hero {
        padding-top: 6rem;
        padding-bottom: 2rem;
    }
    
    #hero h1 {
        line-height: 1.1;
    }
    
    #hero .text-6xl {
        font-size: 3rem;
    }
    
    #hero .bg-white\/15 {
        padding: 1.5rem;
        margin: 0 0.5rem;
    }
}

@media (max-width: 480px) {
    #hero {
        padding-top: 5rem;
    }
    
    #hero .text-6xl {
        font-size: 2.5rem;
    }
}

/* Enhanced Button Styles */
.btn-gradient {
    background: linear-gradient(135deg, #10b981, #059669);
    position: relative;
    overflow: hidden;
}

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

/* Custom Pulse Animation */
.animate-pulse-custom {
    animation: pulseCustom 4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulseCustom {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

/* Advanced Card Hover Effects */
.card-hover {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.card-hover::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;
}

.card-hover:hover::before {
    left: 100%;
}

.card-hover:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-strong);
}

/* Text Gradient Effects */
.text-gradient-blue {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-green {
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-rainbow {
    background: linear-gradient(135deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #ffeaa7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Button Enhancements */
.btn-primary {
    background: var(--gradient-primary);
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: var(--shadow-medium);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #1d4ed8, #047857);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-strong);
}

.btn-primary span,
.btn-primary i {
    position: relative;
    z-index: 1;
}

/* Section Dividers */
.section-divider {
    position: relative;
    margin: 4rem 0;
}

.section-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
}

/* Value Chain Grid Enhancements */
.value-chain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.value-chain-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.value-chain-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.value-chain-card:hover::before {
    transform: scaleX(1);
}

.value-chain-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-strong);
}

.value-chain-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Mandart Section Styling */
.mandart-category {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
    position: relative;
}

.mandart-category:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.mandart-category.category-1 { border-left-color: #3b82f6; }
.mandart-category.category-2 { border-left-color: #10b981; }
.mandart-category.category-3 { border-left-color: #8b5cf6; }
.mandart-category.category-4 { border-left-color: #ef4444; }
.mandart-category.category-5 { border-left-color: #f97316; }
.mandart-category.category-6 { border-left-color: #06b6d4; }
.mandart-category.category-7 { border-left-color: #6366f1; }
.mandart-category.category-8 { border-left-color: #ec4899; }

/* Contact Section Enhancements */
.contact-form {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Animation Classes */
.animate-fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeIn 0.8s ease-out forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-slide-left {
    opacity: 0;
    transform: translateX(-50px);
    animation: slideLeft 0.8s ease-out forwards;
}

@keyframes slideLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-slide-right {
    opacity: 0;
    transform: translateX(50px);
    animation: slideRight 0.8s ease-out forwards;
}

@keyframes slideRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    :root {
        --border-radius: 0.8rem;
        --border-radius-lg: 1.2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .value-chain-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .value-chain-card,
    .mandart-category {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .value-chain-card,
    .mandart-category {
        padding: 1.2rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
}

/* Loading Animation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1e3a8a, #059669);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease-out;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-spinner-small {
    width: 24px;
    height: 24px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Hero Content - Immediate Display */
#hero-content {
    opacity: 1 !important;
    visibility: visible !important;
}

#hero-content.loaded {
    opacity: 1;
}

/* Hero Content Fade In */
#hero-content.loaded {
    opacity: 1;
}

/* Staggered Animation for Hero Elements */
.hero-animate-1 { animation-delay: 0.2s; }
.hero-animate-2 { animation-delay: 0.4s; }
.hero-animate-3 { animation-delay: 0.6s; }
.hero-animate-4 { animation-delay: 0.8s; }

/* Progressive Loading Animation */
.progressive-load {
    opacity: 0;
    transform: translateY(20px);
    animation: progressiveLoad 0.6s ease-out forwards;
}

@keyframes progressiveLoad {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Smooth Reveal Animation */
.reveal-animation {
    opacity: 0;
    transform: scale(0.9) translateY(30px);
    animation: revealUp 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes revealUp {
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles */
button:focus,
a:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --primary-blue: #0000ff;
        --primary-green: #008000;
        --text-dark: #000000;
        --text-gray: #333333;
    }
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .card-hover,
    .value-chain-card,
    .mandart-category {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}

/* Navigation Tooltip Styles */
.nav-item {
    position: relative;
}

.nav-tooltip {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding-top: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    z-index: 1000;
    pointer-events: none;
}

.nav-item:hover .nav-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(4px);
}

.nav-tooltip > div {
    position: relative;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-tooltip > div::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-bottom: 4px solid #111827;
}

/* Purple tooltip arrow for founding member */
.nav-item:nth-child(5) .nav-tooltip > div::before {
    border-bottom-color: #581c87;
}

/* Blue tooltip arrow for visitor */
.nav-item:nth-child(6) .nav-tooltip > div::before {
    border-bottom-color: #1e3a8a;
}

/* Navigation Hover Effects */
.nav-item a {
    position: relative;
    overflow: hidden;
}

.nav-item a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #2563eb, #059669);
    transition: width 0.3s ease;
}

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

/* Mobile Menu Enhancements */
#mobile-menu {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 1rem;
    margin: 1rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

#mobile-menu a {
    transition: all 0.2s ease;
}

#mobile-menu a:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Custom Utilities */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-glow {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.3);
}

.shadow-glow-green {
    box-shadow: 0 0 20px rgba(5, 150, 105, 0.3);
}

/* Advanced Hover Effects */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

.hover-scale {
    transition: transform 0.3s ease;
}

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

/* Smooth Scrolling for Anchor Links */
html {
    scroll-behavior: smooth;
}

/* Custom Scrollbar for Webkit Browsers */
.custom-scrollbar {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-blue) var(--bg-light);
}

.custom-scrollbar::-webkit-scrollbar {
    width: 8px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: var(--bg-light);
    border-radius: 4px;
}

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

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-blue);
}