:root {
    /* Dark Mode Variables*/
    --bg-color-dark: #0a0a0a;        /* Deeper, more premium black */
    --surface-dark: #111111;         /* Elevated surface for cards */
    --surface-hover-dark: #1a1a1a;   /* Interactive surface state */
    --text-primary-dark: #ffffff;    /* Pure white for primary text */
    --text-secondary-dark: #a0a0a0;  /* Soft gray for secondary text */
    --text-tertiary-dark: #6b6b6b;   /* Muted gray for subtle elements */
    --accent-dark: #c0c0c0;          /* Brushed silver/matte gray accent */
    --accent-glow-dark: rgba(192, 192, 192, 0.15);
    --border-dark: #222222;
    --navbar-bg-dark: rgba(10, 10, 10, 0.95);
    --card-bg-dark: #111111;
    --shadow-dark: 0 25px 45px -12px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 30px rgba(192, 192, 192, 0.05);
    
    /* Light Mode Variables*/
    --bg-color-light: #f8f9fa;       /* Clean off-white background */
    --surface-light: #ffffff;        /* Pure white surface */
    --surface-hover-light: #f0f1f3;  /* Subtle hover state */
    --text-primary-light: #111111;   /* Deep gray-black for primary text */
    --text-secondary-light: #4a4a4a; /* Charcoal gray for secondary text */
    --text-tertiary-light: #8a8a8a;  /* Muted gray for subtle elements */
    --accent-light: #3a3a3a;         /* Sophisticated dark gray accent */
    --accent-glow-light: rgba(0, 0, 0, 0.03);
    --border-light: #e5e7eb;
    --navbar-bg-light: rgba(255, 255, 255, 0.98);
    --card-bg-light: #ffffff;
    --shadow-light: 0 25px 45px -12px rgba(0, 0, 0, 0.15);
    
    /* Shared variables */
    --font-family: 'Inter', 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-speed: 0.4s;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
}

/* Global reset & base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color-dark);
    color: var(--text-primary-dark);
    line-height: 1.65;
    transition: background-color var(--transition-speed) var(--transition-smooth), 
                color var(--transition-speed) var(--transition-smooth);
    font-weight: 400;
    letter-spacing: -0.01em;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: #888;
}

/* Typography refinements */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.75rem, 6vw, 4.5rem);
    background: linear-gradient(135deg, var(--text-primary-dark) 0%, var(--accent-dark) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
    margin-bottom: 1rem;
}

h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    position: relative;
    display: inline-block;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

a {
    color: currentColor;
    text-decoration: none;
    transition: all var(--transition-speed) var(--transition-smooth);
    position: relative;
}

p {
    color: var(--text-secondary-dark);
    font-size: 1.05rem;
    max-width: 65ch;
}

a:not(.cta-button, .contact-links a, .project-item a)::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--accent-dark);
    transition: width var(--transition-speed) var(--transition-smooth);
}

a:not(.cta-button, .contact-links a, .project-item a):hover::after {
    width: 100%;
}

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

/* --- Navbar--- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 3rem;
    background: var(--navbar-bg-dark);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-speed) var(--transition-smooth);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-dark);
}

.nav-logo a {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary-dark) 0%, var(--accent-dark) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2.5rem;
    margin: 0;
    padding: 0;
}

.nav-links a {
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 0.5rem 0;
}

/* --- Theme Toggle Button - blaxk based color --- */
.theme-toggle-container {
    margin-left: auto;
    padding-left: 20px;
}

#theme-toggle-button {
    background: transparent;
    border: 1px solid var(--border-dark);
    color: var(--text-primary-dark);
    cursor: pointer;
    padding: 10px;
    border-radius: 50%;
    transition: all var(--transition-speed) var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
}

#theme-toggle-button:hover {
    background-color: var(--surface-hover-dark);
    transform: scale(1.05);
    border-color: var(--accent-dark);
}

#theme-toggle-button svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
    transition: transform 0.3s ease;
}

#theme-toggle-button:hover svg {
    transform: rotate(15deg);
}

/* --- Hero Section - Dynamic --- */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6rem 4rem;
    min-height: 90vh;
    background: var(--bg-color-dark);
    position: relative;
    overflow: hidden;
}

/* Subtele animated background grain for texture */
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, var(--accent-glow-dark) 0%, transparent 70%);
    pointer-events: none;
    opacity: 0.5;
}

.hero-content {
    max-width: 55%;
    position: relative;
    z-index: 2;
}

.hero-content p {
    font-size: 1.25rem;
    margin: 1.5rem 0 2.5rem 0;
    color: var(--text-secondary-dark);
    max-width: 90%;
}

.hero-image {
    position: relative;
    z-index: 2;
}

.hero-image img {
    width: 380px;
    height: 380px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-dark);
    box-shadow: var(--shadow-dark);
    transition: all var(--transition-speed) var(--transition-smooth);
    filter: grayscale(20%);
}

.hero-image img:hover {
    transform: scale(1.02);
    filter: grayscale(0%);
    box-shadow: 0 0 40px rgba(192, 192, 192, 0.2);
}








.cta-button {
    display: inline-block;
    background: transparent;
    color: var(--text-primary-dark);
    padding: 1rem 2.5rem;
    border-radius: var(--border-radius-xl);
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all var(--transition-speed) var(--transition-smooth);
    border: 1.5px solid var(--accent-dark);
    position: relative;
    overflow: hidden;
    z-index: 1;
    backdrop-filter: blur(4px);
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-dark);
    transition: left var(--transition-speed) var(--transition-smooth);
    z-index: -1;
}

.cta-button:hover::before {
    left: 0;
}

.cta-button:hover {
    color: var(--bg-color-dark);
    border-color: var(--accent-dark);
    transform: translateY(-3px);
}

/* --- Section Styling --- */
section {
    padding: 7rem 4rem;
    position: relative;
}

section h2 {
    text-align: center;
    margin-bottom: 3rem;
    width: 100%;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 3px;
    background: var(--accent-dark);
    border-radius: 3px;
    transition: width var(--transition-speed) ease;
}

section h2:hover::after {
    width: 100px;
}

/* - About Section - */
.about-section {
    background-color: var(--surface-dark);
    transition: background-color var(--transition-speed) var(--transition-smooth);
    text-align: center;
}

.about-section p {
    margin: 0 auto 2rem auto;
    font-size: 1.1rem;
}

.skills-list {
    margin-top: 3rem;
}

.skills-list h3 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    font-weight: 500;
}

.skills-list ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.skills-list li {
    background: var(--card-bg-dark);
    padding: 0.85rem 2rem;
    border-radius: var(--border-radius-xl);
    color: var(--text-primary-dark);
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    transition: all var(--transition-speed) var(--transition-smooth);
    border: 1px solid var(--border-dark);
    backdrop-filter: blur(4px);
}

.skills-list li:hover {
    transform: translateY(-5px);
    border-color: var(--accent-dark);
    background: var(--surface-hover-dark);
    box-shadow: var(--shadow-dark);
}

/* --- Projects Section - Luxury Grid --- */
.projects-section {
    background-color: var(--bg-color-dark);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    max-width: 1400px;
    margin: 0 auto;
}

.project-item {
    background: var(--card-bg-dark);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-speed) var(--transition-smooth);
    border: 1px solid var(--border-dark);
    position: relative;
    overflow: hidden;
}

.project-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-dark), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.project-item:hover::before {
    transform: translateX(100%);
}

.project-item:hover {
    transform: translateY(-10px);
    border-color: var(--accent-dark);
    box-shadow: var(--shadow-dark);
}

.project-item img {
    border-radius: var(--border-radius-md);
    margin-bottom: 1.5rem;
    transition: transform 0.5s ease;
}

.project-item:hover img {
    transform: scale(1.02);
}

.project-item h3 {
    margin-bottom: 0.75rem;
    font-size: 1.5rem;
}

.project-item p {
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    opacity: 0.85;
}

.project-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
}

.project-item a {
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.project-item a::after {
    display: none;
}

.project-item a:hover {
    color: var(--accent-dark);
    transform: translateX(3px);
}

/* --- Contact Section - Elegant CTA --- */
.contact-section {
    background-color: var(--surface-dark);
    text-align: center;
    border-top: 1px solid var(--border-dark);
    border-bottom: 1px solid var(--border-dark);
}

.contact-section p {
    margin: 0 auto 2.5rem auto;
    font-size: 1.15rem;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-links a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: transparent;
    color: var(--text-primary-dark);
    padding: 0.9rem 2rem;
    border-radius: var(--border-radius-xl);
    font-weight: 600;
    transition: all var(--transition-speed) var(--transition-smooth);
    border: 1.5px solid var(--accent-dark);
    backdrop-filter: blur(4px);
}

.contact-links a:hover {
    background: var(--accent-dark);
    color: var(--bg-color-dark);
    transform: translateY(-3px);
    gap: 14px;
}

/* Social icons inside contact links */
.contact-links a svg {
    width: 20px;
    height: 20px;
    transition: transform 0.2s ease;
}

.contact-links a:hover svg {
    transform: scale(1.1);
}



footer {
    text-align: center;
    padding: 3rem;
    background: var(--navbar-bg-dark);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--border-dark);
    font-size: 0.9rem;
    letter-spacing: 0.3px;
}

/* --- Light Mode Overrides --- */
body.light-mode {
    --bg-color-dark: var(--bg-color-light);
    --surface-dark: var(--surface-light);
    --surface-hover-dark: var(--surface-hover-light);
    --text-primary-dark: var(--text-primary-light);
    --text-secondary-dark: var(--text-secondary-light);
    --text-tertiary-dark: var(--text-tertiary-light);
    --accent-dark: var(--accent-light);
    --accent-glow-dark: var(--accent-glow-light);
    --border-dark: var(--border-light);
    --navbar-bg-dark: var(--navbar-bg-light);
    --card-bg-dark: var(--card-bg-light);
    --shadow-dark: var(--shadow-light);
}

body.light-mode .hero-section::before {
    background: radial-gradient(circle at 30% 50%, var(--accent-glow-light) 0%, transparent 70%);
}

body.light-mode .skills-list li {
    background: var(--surface-light);
    border-color: var(--border-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

body.light-mode .project-item {
    background: var(--surface-light);
    box-shadow: var(--shadow-light);
}

body.light-mode .contact-links a {
    background: transparent;
    border-color: var(--accent-light);
}

body.light-mode .contact-links a:hover {
    background: var(--accent-light);
    color: white;
}

body.light-mode .cta-button {
    border-color: var(--accent-light);
}

body.light-mode .cta-button::before {
    background: var(--accent-light);
}

body.light-mode h1 {
    background: linear-gradient(135deg, var(--text-primary-light) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

body.light-mode .nav-logo a {
    background: linear-gradient(135deg, var(--text-primary-light) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

/* --- Responsive Design  --- */
@media (max-width: 992px) {
    .navbar {
        padding: 1rem 1.5rem;
    }
    
    .hero-section {
        flex-direction: column;
        text-align: center;
        padding: 4rem 1.5rem;
        min-height: auto;
    }
    
    .hero-content {
        max-width: 100%;
        margin-bottom: 3rem;
    }
    
    .hero-content p {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-image img {
        width: 280px;
        height: 280px;
    }
    
    section {
        padding: 5rem 1.5rem;
    }
    
    .project-grid {
        grid-template-columns: 1fr;
        max-width: 550px;
    }
    
    .contact-links {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .contact-links a {
        width: 80%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .navbar {
        justify-content: space-between;
    }
    
    .theme-toggle-container {
        margin-left: 0;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .cta-button {
        padding: 0.8rem 2rem;
    }
    
    section h2 {
        font-size: 2rem;
    }
    
    .skills-list ul {
        gap: 0.8rem;
    }
    
    .skills-list li {
        padding: 0.6rem 1.2rem;
        font-size: 0.85rem;
    }
}

/* Smooth focus states for accessibility */
:focus-visible {
    outline: 2px solid var(--accent-dark);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Additional micro-animations for premium feel */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content, .hero-image, .project-item, .skills-list li {
    animation: fadeInUp 0.6s var(--transition-smooth) forwards;
}

.project-item:nth-child(2) {
    animation-delay: 0.1s;
}
/*Hero content*/
.project-item:nth-child(3) {
    animation-delay: 0.2s;
}