/* Ohoosoo Korea - Enhanced K-Beauty OEM/ODM Website Styles */
/* React-inspired design with Tailwind CSS enhancements */

/* Custom Properties - Enhanced Color Palette */
:root {
    /* Primary Orange Palette */
    --orange-50: #fff7ed;
    --orange-100: #ffedd5;
    --orange-200: #fed7aa;
    --orange-300: #fdba74;
    --orange-400: #fb923c;
    --orange-500: #f97316;
    --orange-600: #ea580c;
    --orange-700: #c2410c;
    --orange-800: #9a3412;
    --orange-900: #7c2d12;
    
    /* Slate Palette */
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    
    /* Functional Colors */
    --emerald-50: #ecfdf5;
    --emerald-200: #a7f3d0;
    --emerald-500: #10b981;
    --emerald-900: #064e3b;
    
    --red-300: #fca5a5;
    --red-500: #ef4444;
    
    /* Design System Variables */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-out;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
}

/* Reset and Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.6;
}

body {
    font-family: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--slate-800);
    background-color: white;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Korean Language Specific Styles */
html[data-lang="ko"] {
    font-family: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html[data-lang="ko"] h1,
html[data-lang="ko"] h2,
html[data-lang="ko"] h3,
html[data-lang="ko"] h4,
html[data-lang="ko"] h5,
html[data-lang="ko"] h6 {
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

/* Enhanced Header Styles */
#header {
    transition: var(--transition-smooth);
    will-change: transform, background-color, box-shadow;
}

#header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--slate-200);
    box-shadow: var(--shadow-sm);
}

/* Language Toggle Enhanced Styles */
.lang-btn {
    position: relative;
    cursor: pointer;
    border: none;
    background: transparent;
    transition: var(--transition-smooth);
    font-weight: 600;
    letter-spacing: 0.025em;
}

.lang-btn:hover:not(.bg-slate-900) {
    background: var(--slate-100);
    color: var(--slate-800);
}

.lang-btn:focus {
    outline: 2px solid var(--orange-500);
    outline-offset: 2px;
}

/* Mobile Menu Enhancements */
#mobile-menu {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
}

#mobile-menu:not(.hidden) {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

/* Hero Section Enhancements */
.hero-bg-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.2) 50%, transparent 100%);
    z-index: 1;
}

/* Enhanced Button Styles */
button, .btn {
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
    font-weight: 600;
    letter-spacing: 0.025em;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

button:focus, .btn:focus {
    outline: 2px solid var(--orange-500);
    outline-offset: 2px;
}

button:disabled, .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Primary Button */
.bg-orange-500 {
    background: linear-gradient(135deg, var(--orange-500) 0%, var(--orange-600) 100%);
    position: relative;
}

.bg-orange-500::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
    border-radius: inherit;
}

.bg-orange-500:hover::before {
    transform: translateX(100%);
}

.bg-orange-500:hover {
    background: linear-gradient(135deg, var(--orange-600) 0%, var(--orange-700) 100%);
    box-shadow: var(--shadow-lg);
}

.bg-orange-600 {
    background: linear-gradient(135deg, var(--orange-600) 0%, var(--orange-600) 100%);
    position: relative;
}

/* Secondary Button */
.bg-slate-100 {
    position: relative;
    transition: var(--transition-smooth);
}

/* Card Enhancements */
.rounded-2xl {
    border-radius: var(--border-radius-2xl);
    transition: var(--transition-smooth);
    will-change: transform, box-shadow;
}

.hover\:shadow-lg:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.hover\:shadow-md:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* KPI Badge Enhancements */
.kpi-badge {
    position: relative;
    overflow: hidden;
}

.kpi-badge::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--orange-500) 0%, var(--orange-600) 100%);
    transform: scaleX(0);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: left;
}

.kpi-badge:hover::after {
    transform: scaleX(1);
}

/* Service Icons Enhancement */
.service-icon {
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.service-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--orange-50) 0%, var(--orange-100) 100%);
    opacity: 0;
    transition: var(--transition-smooth);
    border-radius: inherit;
}

.service-icon:hover::before {
    opacity: 1;
}

.service-icon:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-icon:hover [data-lucide] {
    color: var(--orange-600);
    transform: scale(1.1);
}

/* Solutions Cards */
.solution-card {
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
    border: 1px solid var(--slate-100);
}

.solution-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--orange-50) 0%, transparent 100%);
    opacity: 0;
    transition: var(--transition-smooth);
    border-radius: inherit;
}

.solution-card:hover::before {
    opacity: 1;
}

.solution-card:hover {
    border-color: var(--orange-200);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Product Category Cards */
.product-category {
    position: relative;
    transition: var(--transition-smooth);
    border: 1px solid var(--slate-100);
}

.product-category:hover {
    border-color: var(--orange-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.product-category:hover [data-lucide] {
    color: var(--orange-600);
    transform: scale(1.05);
}

/* R&D and Quality Cards */
.brand-card {
    position: relative;
    transition: var(--transition-smooth);
    border: 1px solid var(--slate-100);
}

.brand-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.metric-card {
    transition: var(--transition-smooth);
    border: 1px solid var(--slate-100);
}

.metric-card:hover {
    background: var(--orange-50);
    border-color: var(--orange-200);
    transform: scale(1.02);
}

/* Process Steps */
.process-step {
    position: relative;
    transition: var(--transition-smooth);
    border: 1px solid var(--slate-100);
}

.process-step:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--orange-200);
}

.process-step:hover [data-lucide] {
    color: var(--orange-600);
    transform: scale(1.1);
}

/* Case Studies Carousel */
.carousel-content {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.case-kpi {
    transition: var(--transition-smooth);
    border: 1px solid var(--slate-100);
}

.case-kpi:hover {
    background: var(--orange-50);
    border-color: var(--orange-200);
    box-shadow: var(--shadow-md);
    transform: scale(1.02);
}

/* Accreditation Badges */
.accreditation-badge {
    transition: var(--transition-smooth);
    border: 1px solid var(--slate-100);
    font-weight: 600;
    letter-spacing: 0.025em;
}

.accreditation-badge:hover {
    background: var(--orange-50);
    border-color: var(--orange-200);
    color: var(--orange-700);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* Timeline Enhancements */
.timeline-item {
    position: relative;
    padding-left: 2rem;
}

.timeline-marker {
    position: absolute;
    left: -0.75rem;
    width: 1.5rem;
    height: 1.5rem;
    background: var(--orange-500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

/* Contact Form Enhancements */
.form-field {
    transition: var(--transition-smooth);
    border: 1px solid var(--slate-200);
}

.form-field:focus {
    outline: none;
    border-color: var(--orange-500);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.form-field.error {
    border-color: var(--red-500);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.field-error {
    color: var(--red-500);
    font-size: 0.75rem;
    margin-top: 0.25rem;
    animation: slideInError 0.3s ease-out;
}

/* Success Message */
.success-message {
    background: var(--emerald-50);
    border: 1px solid var(--emerald-200);
    color: var(--emerald-900);
    padding: 1rem;
    border-radius: var(--border-radius-xl);
    font-size: 0.875rem;
    margin-top: 1rem;
    animation: slideInUp 0.3s ease-out;
}

/* Error Message */
.error-message {
    animation: slideInUp 0.3s ease-out;
}

.error-message i {
    flex-shrink: 0;
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 5rem;
    right: 1rem;
    z-index: 50;
    padding: 1rem;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    transform: translateX(100%);
    transition: var(--transition-smooth);
    max-width: 20rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.notification.show {
    transform: translateX(0);
}

/* Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(2rem);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.animate-fade-in {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger Animation */
.stagger {
    transition-delay: calc(var(--stagger-delay, 0) * 100ms);
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    border-radius: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Bounce Animation for Scroll Indicator */
@keyframes bounce-gentle {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-0.5rem) translateX(-50%);
    }
    60% {
        transform: translateY(-0.25rem) translateX(-50%);
    }
}

.animate-bounce {
    animation: bounce-gentle 2s infinite;
}

/* Fade In Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(2rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInError {
    from {
        opacity: 0;
        transform: translateY(-0.25rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(1rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design Enhancements */
@media (max-width: 768px) {
    :root {
        --border-radius-xl: 0.75rem;
        --border-radius-2xl: 1rem;
    }
    
    html {
        font-size: 14px;
    }
    
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    /* Mobile Typography */
    h1 {
        font-size: 2rem !important;
        line-height: 1.1;
    }
    
    h2 {
        font-size: 1.5rem !important;
    }
    
    h3 {
        font-size: 1.25rem !important;
    }
    
    /* Mobile Spacing */
    .hero-section {
        padding-top: 4rem;
        padding-bottom: 4rem;
    }
    
    /* Mobile Cards */
    .rounded-2xl {
        border-radius: var(--border-radius-xl);
    }
    
    /* Mobile Buttons */
    button, .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
}

/* High-DPI Display Optimizations */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .service-icon,
    .solution-card,
    .process-step {
        will-change: transform;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .animate-bounce {
        animation: none;
    }
    
    .animate-on-scroll {
        opacity: 1;
        transform: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --slate-50: #0f172a;
        --slate-100: #1e293b;
        --slate-800: #f8fafc;
        --slate-900: #ffffff;
    }
}

/* Print Styles */
@media print {
    header,
    footer,
    .hero-section,
    .carousel-content,
    button,
    .btn {
        display: none !important;
    }
    
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .container {
        max-width: none !important;
        padding: 0 !important;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .section {
        page-break-inside: avoid;
        margin-bottom: 2rem;
    }
}

/* Focus States for Accessibility */
*:focus {
    outline: 2px solid var(--orange-500);
    outline-offset: 2px;
}

button:focus,
a:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--orange-500);
    outline-offset: 2px;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--orange-500);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--orange-600);
} */

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--orange-500) 0%, var(--orange-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-orange {
    background: linear-gradient(135deg, var(--orange-500) 0%, var(--orange-600) 100%);
}

.border-gradient {
    border: 1px solid;
    border-image: linear-gradient(135deg, var(--orange-500) 0%, var(--orange-600) 100%) 1;
}

/* Selection Styles */
::selection {
    background: var(--orange-200);
    color: var(--slate-900);
}

::-moz-selection {
    background: var(--orange-200);
    color: var(--slate-900);
}

/* Floating Action Buttons */
.floating-button {
    position: relative;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(8px);
}

.floating-button:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.floating-button:active {
    transform: scale(0.95);
}

.floating-tooltip {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.floating-tooltip::before {
    content: '';
    position: absolute;
    top: 50%;
    right: -4px;
    transform: translateY(-50%);
    border: 4px solid transparent;
    border-left-color: rgba(0, 0, 0, 0.8);
}

.floating-button:hover .floating-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(-8px);
}

.floating-button.show {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.floating-button.hide {
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8);
}

/* Image Modal Styles */
#image-modal {
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

#image-modal:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

#image-modal.hidden {
    opacity: 0;
    visibility: hidden;
}

#modal-image {
    transition: transform 0.3s ease;
}

#modal-image.loading {
    opacity: 0.7;
}

#modal-image.loaded {
    opacity: 1;
}

/* Modal backdrop blur effect */
#image-modal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: -1;
}

/* Modal animation */
#image-modal .relative {
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Image hover effects */
.group:hover img {
    filter: brightness(1.1);
}

/* Modal close button enhancement */
#image-modal button {
    transition: all 0.2s ease;
}

#image-modal button:hover {
    transform: scale(1.1);
}

/* Image caption animation */
#modal-caption {
    animation: fadeInUp 0.4s ease-out 0.2s both;
}

/* Loading state for images */
.image-loading {
    position: relative;
}

.image-loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Responsive adjustments for floating buttons */
@media (max-width: 768px) {
    #floating-buttons {
        bottom: 1rem;
        right: 1rem;
    }
    
    .floating-button {
        width: 48px;
        height: 48px;
    }
    
    .floating-tooltip {
        display: none; /* Hide tooltips on mobile */
    }
    
    /* Mobile modal adjustments */
    #image-modal .relative {
        max-width: 95vw;
        max-height: 85vh;
    }
    
    #modal-image {
        max-height: 75vh;
    }
    
    #modal-caption {
        font-size: 1rem;
        padding: 1rem;
    }
}

@media (max-width: 768px) {
    #process h4 br {
        display: none;
    }
}