/* Reset and Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* CSS Custom Properties for Light/Dark Mode */
:root {
    /* Light mode colors */
    --primary-purple: #8b5cf6;
    --primary-gold: #f59e0b;
    --secondary-purple: #a855f7;
    --secondary-gold: #d97706;
    --accent-purple: #7c3aed;
    --accent-gold: #f97316;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #e2e8f0;
    --bg-card: #ffffff;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --shadow-light: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-medium: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-large: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.15);
    
    --gradient-purple-gold: linear-gradient(135deg, var(--primary-purple), var(--primary-gold));
    --gradient-bg: linear-gradient(135deg, #f8fafc, #e2e8f0);
}

[data-theme="dark"] {
    /* Dark mode colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-color: #334155;
    --shadow-light: 0 1px 3px 0 rgb(0 0 0 / 0.3), 0 1px 2px -1px rgb(0 0 0 / 0.3);
    --shadow-medium: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-large: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.25);
    
    --gradient-bg: linear-gradient(135deg, #1e293b, #334155);
}

/* Typography */
.logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-purple-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

[data-theme="dark"] .header {
    background: rgba(15, 23, 42, 0.95);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-purple);
}

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

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

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    border-color: var(--primary-purple);
    color: var(--primary-purple);
    transform: scale(1.05);
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 0.25rem;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    padding: 8rem 0 6rem;
    background: var(--gradient-bg);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 60vh;
}

.hero-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.skill-tag {
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: var(--primary-purple);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.875rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-purple-gold);
    color: white;
}

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

.btn-secondary {
    background: transparent;
    color: var(--primary-purple);
    border-color: var(--primary-purple);
}

.btn-secondary:hover {
    background: var(--primary-purple);
    color: white;
    transform: translateY(-2px);
}

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

.hero-decoration {
    width: 300px;
    height: 300px;
    background: var(--gradient-purple-gold);
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

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

/* Sections */
section {
    padding: 6rem 0;
}

section:nth-child(even) {
    background: var(--bg-secondary);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    text-align: center;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Philosophy Section */
.philosophy-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.philosophy-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.accessibility-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.feature {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.feature h4 {
    color: var(--primary-purple);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.skill-category h4 {
    color: var(--primary-gold);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.skill-category li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-purple);
    font-weight: bold;
}

/* Design Section */
.design-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.design-item {
    background: var(--bg-card);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.design-placeholder {
    width: 100%;
    height: 200px;
    background: var(--gradient-purple-gold);
    opacity: 0.8;
}

.design-item h4,
.design-item p {
    padding: 0 1.5rem;
}

.design-item h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 1.5rem 0 0.5rem;
}

.design-item p {
    color: var(--text-secondary);
    padding-bottom: 1.5rem;
}

/* Multimedia Section */
.multimedia-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.multimedia-item {
    background: var(--bg-card);
    padding: 2.5rem 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.multimedia-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-purple-gold);
}

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

.multimedia-item h4 {
    color: var(--primary-purple);
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-item {
    background: var(--bg-card);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.project-image {
    width: 100%;
    height: 250px;
    background: var(--gradient-purple-gold);
    opacity: 0.8;
}

.project-content {
    padding: 1.5rem;
}

.project-content h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: var(--primary-purple);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
}

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

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

.contact-info {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    margin-top: 2rem;
}

.contact-info h4 {
    color: var(--primary-gold);
    margin-bottom: 1rem;
}

.email-link {
    color: var(--primary-purple);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.email-link:hover {
    color: var(--accent-purple);
}

.about-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-decoration {
    width: 250px;
    height: 250px;
    background: var(--gradient-purple-gold);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    opacity: 0.1;
    animation: morph 8s ease-in-out infinite;
}

@keyframes morph {
    0%, 100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    25% { border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%; }
    50% { border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%; }
    75% { border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%; }
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 3rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-brand h4 {
    font-family: 'Playfair Display', serif;
    color: var(--primary-purple);
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-card);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-large);
        border-top: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .hero-decoration {
        width: 200px;
        height: 200px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 1rem;
    }
    
    .hero {
        padding: 6rem 0 4rem;
    }
    
    section {
        padding: 4rem 0;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }
}

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

/* Remove default focus outline for all elements */
*:focus {
    outline: none;
}

/* Fallback focus styles for older browsers */
.nav-link:focus,
.theme-toggle:focus,
.btn:focus,
.email-link:focus,
.mobile-menu-toggle:focus {
    outline: 2px solid var(--primary-purple);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Modern focus styles for keyboard navigation only */
.nav-link:focus:not(:focus-visible),
.theme-toggle:focus:not(:focus-visible),
.btn:focus:not(:focus-visible),
.email-link:focus:not(:focus-visible),
.mobile-menu-toggle:focus:not(:focus-visible) {
    outline: none;
    box-shadow: none;
    background: transparent;
}

.nav-link:focus-visible,
.theme-toggle:focus-visible,
.btn:focus-visible,
.email-link:focus-visible,
.mobile-menu-toggle:focus-visible {
    outline: 2px solid var(--primary-purple);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Enhanced focus styles for navigation links */
.nav-link:focus-visible {
    background: rgba(139, 92, 246, 0.1) !important;
    padding: 0.5rem 1rem !important;
    margin: -0.5rem -1rem !important;
    border-radius: 8px !important;
    outline-offset: 2px !important;
}

/* Remove enhanced focus on mouse click */
.nav-link:focus:not(:focus-visible) {
    background: transparent !important;
    padding: 0.5rem 0 !important;
    margin: 0 !important;
}

/* Theme toggle focus enhancement */
.theme-toggle:focus-visible {
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.2) !important;
    outline: 2px solid var(--primary-purple) !important;
    outline-offset: 2px !important;
}

.theme-toggle:focus:not(:focus-visible) {
    box-shadow: none !important;
    outline: none !important;
}

/* Button focus enhancement */
.btn:focus-visible {
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.2) !important;
    outline: 2px solid var(--primary-purple) !important;
    outline-offset: 2px !important;
}

.btn:focus:not(:focus-visible) {
    box-shadow: none !important;
    outline: none !important;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow-light: 0 2px 4px rgba(0, 0, 0, 0.8);
        --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.8);
        --shadow-large: 0 8px 16px rgba(0, 0, 0, 0.8);
    }
}