/* ========================================
   sakura-strategy - Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
    /* Color Palette - Japanese-inspired elegant light theme */
    --color-bg-primary: #fafafa;
    --color-bg-secondary: #f5f5f5;
    --color-bg-tertiary: #eeeeee;
    --color-bg-card: #ffffff;
    
    --color-accent-primary: #1a365d;
    --color-accent-secondary: #2c5282;
    --color-accent-highlight: #c53030;
    
    --color-text-primary: #1a202c;
    --color-text-secondary: #4a5568;
    --color-text-muted: #718096;
    
    --color-border: rgba(26, 54, 93, 0.12);
    --color-border-light: rgba(0, 0, 0, 0.06);
    
    /* Typography */
    --font-display: 'Cormorant Garamond', serif;
    --font-body-jp: 'Noto Sans JP', sans-serif;
    --font-body-cn: 'Noto Sans SC', sans-serif;
    --font-body: var(--font-body-jp);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-2xl: 8rem;
    
    /* Layout */
    --header-height: 80px;
    --footer-height: auto;
    --container-max-width: 1400px;
    --container-padding: 2rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 30px rgba(26, 54, 93, 0.1);
}

/* Language-specific font switching */
html[lang="zh"] {
    --font-body: var(--font-body-cn);
}

html[lang="ja"] {
    --font-body: var(--font-body-jp);
}

html[lang="en"] {
    --font-body: var(--font-body-jp);
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ========================================
   Utility Classes
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
    position: relative;
    letter-spacing: 0.05em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent-highlight), transparent);
}

/* ========================================
   Header Styles
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--transition-medium);
}

.header-container {
    height: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    letter-spacing: 0.15em;
}

.logo-separator {
    color: var(--color-border);
    font-weight: 200;
}

.company-name {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.05em;
}

.nav {
    display: flex;
    align-items: center;
}

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

.nav-list a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.03em;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-highlight);
    transition: width var(--transition-medium);
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--color-accent-primary);
}

.nav-list a:hover::after,
.nav-list a.active::after {
    width: 100%;
}

.language-selector {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    transition: all var(--transition-fast);
    letter-spacing: 0.05em;
}

.lang-btn:hover {
    color: var(--color-text-primary);
    border-color: var(--color-text-muted);
}

.lang-btn.active {
    color: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    background: rgba(26, 54, 93, 0.08);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-accent-primary);
    transition: all var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(26, 54, 93, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(197, 48, 48, 0.04) 0%, transparent 40%),
        radial-gradient(ellipse at 50% 100%, rgba(245, 245, 245, 0.9) 0%, transparent 60%),
        linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%231a365d' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    text-align: center;
    padding: var(--spacing-lg);
    max-width: 1000px;
    animation: fadeInUp 1s ease-out;
}

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

.slogan {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 3.2rem);
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text-primary);
    letter-spacing: 0.03em;
    margin-bottom: var(--spacing-md);
}

.hero-decoration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.hero-decoration .line {
    width: 80px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent-highlight));
}

.hero-decoration .line:last-child {
    background: linear-gradient(90deg, var(--color-accent-highlight), transparent);
}

.hero-decoration .diamond {
    width: 8px;
    height: 8px;
    background: var(--color-accent-highlight);
    transform: rotate(45deg);
}

/* ========================================
   About Section
   ======================================== */

.about-section {
    background: var(--color-bg-secondary);
    position: relative;
}

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

.about-content {
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
    text-align: center;
}

.about-text {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--color-text-secondary);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    transition: all var(--transition-medium);
}

.stat-item:hover {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ========================================
   Services Section
   ======================================== */

.services-section {
    background: var(--color-bg-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.service-card {
    display: flex;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.service-card:hover {
    border-color: var(--color-accent-secondary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.service-image {
    width: 45%;
    min-height: 280px;
    object-fit: cover;
}

.service-content {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.service-name {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.02em;
}

.service-description {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

/* ========================================
   Cases Section
   ======================================== */

.cases-section {
    background: var(--color-bg-secondary);
}

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

.case-card {
    display: flex;
    gap: var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.case-card:hover {
    border-color: var(--color-accent-secondary);
    box-shadow: var(--shadow-md);
}

.case-image-wrapper {
    flex: 1;
    min-width: 0;
}

.case-image {
    width: 100%;
    height: 100%;
    min-height: 240px;
    object-fit: cover;
}

.case-content {
    flex: 2;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.case-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.02em;
}

.case-description {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--color-text-secondary);
}

/* ========================================
   News Section
   ======================================== */

.news-section {
    background: var(--color-bg-primary);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.news-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-medium);
}

.news-card:hover {
    border-color: var(--color-accent-secondary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.news-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.news-image-wrapper {
    overflow: hidden;
}

.news-content {
    padding: var(--spacing-md);
}

.news-date {
    font-size: 0.8rem;
    color: var(--color-accent-highlight);
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-summary {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-more {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.btn-secondary {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-size: 0.9rem;
    color: var(--color-accent-primary);
    border: 1px solid var(--color-accent-primary);
    border-radius: 2px;
    letter-spacing: 0.05em;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--color-accent-primary);
    color: #ffffff;
}

/* ========================================
   Team Section
   ======================================== */

.team-section {
    background: var(--color-bg-secondary);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.team-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    text-align: center;
    transition: all var(--transition-medium);
}

.team-card:hover {
    border-color: var(--color-accent-secondary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.team-content {
    padding: var(--spacing-md);
}

.team-name {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 0.3rem;
}

.team-position {
    font-size: 0.85rem;
    color: var(--color-accent-highlight);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.03em;
}

.team-bio {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    text-align: left;
}

/* ========================================
   Footer Styles
   ======================================== */

.footer {
    background: var(--color-bg-tertiary);
    border-top: 1px solid var(--color-border);
    margin-top: auto;
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
}

.footer-brand {
    padding-right: var(--spacing-lg);
}

.footer-logo .logo-text {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    letter-spacing: 0.15em;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-top: var(--spacing-sm);
}

.footer-title {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.contact-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-accent-primary);
    margin-top: 2px;
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    background: rgba(26, 54, 93, 0.08);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

.footer-bottom {
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.copyright {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ========================================
   News Page Specific Styles
   ======================================== */

.news-page .main {
    padding-top: var(--header-height);
}

.page-header {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    background: var(--color-bg-secondary);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
}

.breadcrumb {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.breadcrumb a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--color-accent-primary);
}

.breadcrumb-separator {
    margin: 0 0.5rem;
}

.news-list-section {
    background: var(--color-bg-primary);
}

.news-list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.news-list-card {
    display: flex;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.news-list-card:hover {
    border-color: var(--color-accent-secondary);
    box-shadow: var(--shadow-md);
}

.news-list-image {
    width: 40%;
    min-height: 220px;
    object-fit: cover;
}

.news-list-content {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
}

.news-list-date {
    font-size: 0.8rem;
    color: var(--color-accent-highlight);
    margin-bottom: 0.5rem;
}

.news-list-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.news-list-summary {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    flex: 1;
}

.news-full-content {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
    display: none;
}

.news-list-card.expanded .news-full-content {
    display: block;
}

.news-list-card.expanded .news-list-summary {
    display: none;
}

.back-section {
    padding: var(--spacing-lg) 0;
    text-align: center;
    background: var(--color-bg-primary);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 2rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    letter-spacing: 0.05em;
    transition: all var(--transition-fast);
}

.btn-back:hover {
    color: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
}

/* ========================================
   Loading State
   ======================================== */

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    color: var(--color-text-muted);
}

.loading::after {
    content: '';
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: var(--spacing-sm);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        flex-direction: column;
    }
    
    .service-image {
        width: 100%;
        min-height: 200px;
    }
}

@media (max-width: 992px) {
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-main {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-brand {
        grid-column: span 2;
        padding-right: 0;
        text-align: center;
        padding-bottom: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1.5rem;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-md);
    }
    
    .nav.active {
        display: block;
        background: var(--color-bg-card);
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .company-name {
        display: none;
    }
    
    .logo-separator {
        display: none;
    }
    
    .news-grid,
    .news-list-grid {
        grid-template-columns: 1fr;
    }
    
    .case-card {
        flex-direction: column;
    }
    
    .case-image-wrapper {
        flex: none;
    }
    
    .case-image {
        min-height: 200px;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .footer-brand {
        grid-column: span 1;
    }
    
    .news-list-card {
        flex-direction: column;
    }
    
    .news-list-image {
        width: 100%;
        min-height: 180px;
    }
}

@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        padding: var(--spacing-sm);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .language-selector {
        gap: 0.3rem;
    }
    
    .lang-btn {
        padding: 0.3rem 0.6rem;
        font-size: 0.7rem;
    }
}

/* ========================================
   Animations & Transitions
   ======================================== */

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
    opacity: 0;
}

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

.slide-up {
    animation: slideUp 0.6s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

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

/* Staggered animation delays */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; }

/* ========================================
   Scrollbar Styling
   ======================================== */

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

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ========================================
   Selection Styling
   ======================================== */

::selection {
    background: var(--color-accent-primary);
    color: #ffffff;
}

::-moz-selection {
    background: var(--color-accent-primary);
    color: #ffffff;
}