/* ============================================
   TongPlanet - Modern Portfolio Stylesheet
   Professional, Tech-Inspired Design
   ============================================ */

/* ========== CSS Variables ========== */
:root {
    /* Primary Colors - Tech Blue Theme */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    
    /* Accent Colors */
    --accent-purple: #7c3aed;
    --accent-cyan: #06b6d4;
    --accent-gold: #fbbf24;
    
    /* Neutral Colors */
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --white: #ffffff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-tech: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --gradient-hero: linear-gradient(135deg, rgba(37, 99, 235, 0.9) 0%, rgba(124, 58, 237, 0.9) 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
}

/* ========== Reset & Base Styles ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

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

/* ========== Navigation ========== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

header.scrolled nav a {
    color: var(--text-primary);
}

header.scrolled .navbar-brand {
    color: var(--primary-color);
}

nav {
    padding: var(--spacing-sm) 0;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    transition: color var(--transition-base);
}

.navbar-brand:hover {
    color: var(--accent-cyan);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu a {
    color: var(--white);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-cyan);
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.nav-menu a:hover::after {
    width: 80%;
}

.nav-menu a:hover {
    color: var(--accent-cyan);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: all var(--transition-base);
}

header.scrolled .hamburger span {
    background: var(--text-primary);
}

/* ========== Hero Section ========== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero), url('media/car1.jpg') center/cover no-repeat;
    background-attachment: fixed;
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: 70px;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    max-width: 900px;
    padding: var(--spacing-lg);
}

.hero-content h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1s ease-out;
    background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content .subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 300;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-cta {
    display: inline-flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    animation: fadeInUp 1s ease-out 0.4s both;
}

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

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-tech);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

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

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

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

/* ========== About Section ========== */
.about-section {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.about-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.about-section .container {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.about-section h2 {
    color: var(--accent-gold);
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-size: clamp(2rem, 4vw, 3rem);
}

.about-section p {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    line-height: 1.8;
    text-align: center;
    opacity: 0.95;
    margin-bottom: var(--spacing-md);
}

.about-section .btn {
    display: block;
    margin: var(--spacing-md) auto 0;
    max-width: 250px;
}

/* ========== Portfolio Section ========== */
.portfolio-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(to bottom, #f8fafc 0%, #ffffff 100%);
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-tech);
    border-radius: 2px;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.portfolio-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.portfolio-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.portfolio-card:hover img {
    transform: scale(1.1);
}

.card-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

.card-btn {
    margin-top: auto;
    width: 100%;
    text-align: center;
}

/* ========== AIGC Lab Section ========== */
.aigc-lab-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(to bottom, #ffffff 0%, #f8fafc 100%);
}

.aigc-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.aigc-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.aigc-card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: var(--gradient-tech);
}

.aigc-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.aigc-card-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.aigc-card-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 600;
}

.aigc-card-description {
    color: var(--text-secondary);
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.aigc-card-btn {
    display: inline-block;
    width: 100%;
    text-align: center;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-tech);
    color: var(--white);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-base);
    text-decoration: none;
}

.aigc-card-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

/* Responsive Design for AIGC Lab */
@media (max-width: 768px) {
    .aigc-grid {
        grid-template-columns: 1fr;
    }
    
    .aigc-card-image {
        height: 200px;
    }
}

/* ========== Passion Concepts Section ========== */
.passion-concepts-section {
    width: 100%;
    padding: 60px 0;
    background: #ffffff;
}

.passion-concepts-section .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========== Digital Arcade Section ========== */
.digital-arcade-section {
    width: 100%;
    padding: 60px 0;
    background: #f3f0ff;
}

.digital-arcade-section .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========== Digital Playground Section (Dark) ========== */
.digital-playground-section {
    width: 100%;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(to bottom, #ffffff 0%, #f8fafc 100%);
    color: var(--text-primary);
}

.digital-playground-section .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.playground-header {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.playground-title {
    color: var(--text-primary);
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
}

.playground-subtitle {
    color: var(--text-secondary);
    margin: 0;
}

.playground-more-btn {
    border-radius: 999px;
    padding: 0.75rem 1.25rem;
}

.playground-card {
    height: 100%;
    background: var(--white);
    border: 1px solid rgba(2, 6, 23, 0.08);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    display: flex;
    flex-direction: column;
}

.playground-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.35);
}

.playground-card-media {
    height: 200px;
    overflow: hidden;
    background: #f1f5f9;
}

.playground-card-media img {
    width: 100%;
    height: 100%;
    max-width: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    display: block;
}

.playground-card:hover .playground-card-media img {
    transform: scale(1.06);
}

.playground-card-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 0.5rem;
}

.playground-card-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.playground-card-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.playground-play-btn {
    margin-top: auto;
}

@media (max-width: 768px) {
    .playground-card-media {
        height: 200px;
    }
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.project-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

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

.project-card.coming-soon {
    opacity: 0.85;
    position: relative;
}

.project-card.coming-soon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(2px);
    z-index: 2;
    pointer-events: none;
}

.coming-soon-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.8);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 3;
    box-shadow: var(--shadow-md);
}

.concept-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(124, 58, 237, 0.9);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 3;
    box-shadow: var(--shadow-md);
}

.concept-card {
    opacity: 0.9;
}

.concept-card:hover {
    opacity: 1;
}

.project-card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: var(--gradient-tech);
    position: relative;
}

.project-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.project-card.coming-soon:hover .project-card-image img,
.concept-card:hover .project-card-image img {
    transform: scale(1);
}

.project-card-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-tag {
    display: inline-block;
    background: var(--gradient-tech);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    align-self: flex-start;
}

.project-card-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 600;
}

.project-card-description {
    color: var(--text-secondary);
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.project-card-btn {
    display: inline-block;
    width: 100%;
    text-align: center;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-tech);
    color: var(--white);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-base);
    text-decoration: none;
}

.project-card-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.project-card.coming-soon .project-card-btn {
    display: none;
}

/* Game Button - More Vibrant */
.game-btn {
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.game-btn:hover {
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
    color: var(--white);
}

/* Responsive Design for Projects */
@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-card-image {
        height: 200px;
    }
    
    .subsection-divider {
        margin: var(--spacing-lg) 0;
    }
}

/* ========== Footer ========== */
footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

footer .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

footer h3 {
    color: var(--white);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

footer p {
    text-align: center;
    opacity: 0.8;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
}

footer hr {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    margin: var(--spacing-md) 0;
}

.copyright {
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.6;
    padding-top: var(--spacing-sm);
}

/* ========== Utility Classes ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.text-center {
    text-align: center;
}

/* ========== Responsive Design ========== */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-dark);
        flex-direction: column;
        padding: var(--spacing-lg);
        transition: left var(--transition-base);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu a {
        font-size: 1.2rem;
        padding: var(--spacing-sm);
    }
    
    .hero-section {
        min-height: 80vh;
        padding: var(--spacing-md);
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .about-section {
        padding: var(--spacing-lg) 0;
    }
    
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .portfolio-card img {
        height: 200px;
    }
}

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

/* ========== Print Styles ========== */
@media print {
    header, footer {
        display: none;
    }
    
    .hero-section {
        min-height: auto;
        page-break-after: always;
    }
}

/* ========== Sub-page Specific Styles ========== */

/* Page Header */
.page-header {
    padding: calc(var(--spacing-xl) + 70px) 0 var(--spacing-lg);
    background: var(--gradient-tech);
    color: var(--white);
    text-align: center;
    margin-top: 70px;
}

.page-header h1 {
    color: var(--white);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

/* About Me Page - Left Image Right Text Layout */
.about-me-section {
    padding: var(--spacing-xl) 0;
}

.about-me-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
    margin-bottom: var(--spacing-lg);
}

.about-me-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-me-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

.about-me-image:hover img {
    transform: scale(1.05);
}

.about-me-text {
    line-height: 1.8;
}

.about-me-text h2 {
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.about-me-text p {
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
    color: var(--text-secondary);
}

/* Image Gallery / Carousel */
.image-gallery {
    margin: var(--spacing-lg) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.image-gallery img {
    width: 100%;
    height: auto;
    display: block;
}

/* Projects Page - Grid Card Layout */
.projects-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(to bottom, #f8fafc 0%, #ffffff 100%);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.project-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

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

.project-card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-card-image {
    transform: scale(1.1);
}

.project-card-body {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-card-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.project-card-title a {
    color: var(--primary-color);
    transition: color var(--transition-base);
}

.project-card-title a:hover {
    color: var(--accent-purple);
}

.project-card-description {
    color: var(--text-secondary);
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

.project-card-link {
    display: inline-block;
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
}

.project-card-link:hover {
    color: var(--accent-purple);
    transform: translateX(5px);
}

/* Waterfall / Masonry Layout for Images */
.waterfall-gallery {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(to bottom, #f8fafc 0%, #ffffff 100%);
}

.waterfall-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.waterfall-item {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.waterfall-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.waterfall-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

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

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

.waterfall-item-title {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.waterfall-item-text {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Reading List - Bookshelf Style */
.reading-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(to bottom, #f8fafc 0%, #ffffff 100%);
}

.bookshelf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.book-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    gap: var(--spacing-md);
    align-items: start;
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.book-cover {
    flex-shrink: 0;
    width: 120px;
    height: 180px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.book-card:hover .book-cover img {
    transform: scale(1.05);
}

.book-info {
    flex: 1;
}

.book-title {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.book-summary {
    margin-bottom: var(--spacing-sm);
}

.book-summary .book-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.book-full-content {
    display: none;
}

.book-full-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

/* Read More Button */
.read-more-btn {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-top: var(--spacing-xs);
    display: inline-block;
}

.read-more-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.read-more-btn:active {
    transform: translateY(0);
}

/* Content Section */
.content-section {
    padding: var(--spacing-xl) 0;
}

.content-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.content-section p {
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    line-height: 1.8;
    font-size: 1.05rem;
}

/* Media Object (for legacy compatibility) */
.media-object {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.media-object:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.media-object img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.media-object-body {
    flex: 1;
}

.media-object-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.media-object-text {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Responsive adjustments for sub-pages */
@media (max-width: 768px) {
    .about-me-content {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .waterfall-grid {
        grid-template-columns: 1fr;
    }
    
    .bookshelf-grid {
        grid-template-columns: 1fr;
    }
    
    .book-card {
        flex-direction: column;
    }
    
    .book-cover {
        width: 100%;
        height: 300px;
    }
    
    .media-object {
        flex-direction: column;
    }
    
    .media-object img {
        width: 100%;
        height: 250px;
    }
}

/* Active Navigation Link */
.nav-menu a.active {
    color: var(--accent-cyan) !important;
}

.nav-menu a.active::after {
    width: 80% !important;
}

/* ========== Book Review Modal ========== */
.book-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.book-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base);
    z-index: 10001;
}

.book-modal.active .modal-content {
    transform: translate(-50%, -50%) scale(1);
}

.modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    font-size: 2rem;
    line-height: 1;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    z-index: 10002;
    box-shadow: var(--shadow-sm);
}

.modal-close:hover {
    background: var(--white);
    transform: rotate(90deg);
    box-shadow: var(--shadow-md);
}

.modal-close:active {
    transform: rotate(90deg) scale(0.95);
}

.modal-header {
    padding: var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid #e5e7eb;
    background: linear-gradient(to bottom, #f8fafc 0%, var(--white) 100%);
}

.modal-cover-image {
    width: 150px;
    height: 225px;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
    transition: transform var(--transition-base);
}

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

.modal-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--text-primary);
    margin: 0;
    font-weight: 700;
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
    max-height: 70vh;
}

.modal-review {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin: 0;
    text-align: justify;
}

.modal-review p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.modal-review p:last-child {
    margin-bottom: 0;
}

/* Custom scrollbar for modal body */
.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb {
    background: var(--text-light);
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Responsive Modal */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }
    
    .modal-cover-image {
        width: 120px;
        height: 180px;
    }
    
    .modal-body {
        padding: var(--spacing-md);
    }
    
    .modal-close {
        width: 35px;
        height: 35px;
        font-size: 1.5rem;
        top: var(--spacing-xs);
        right: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .modal-content {
        width: 100%;
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
    }
    
    .modal-cover-image {
        width: 100px;
        height: 150px;
    }
}