/* =========================================
   PORTFOLIO PROJECT - COMPREHENSIVE CSS
   Modern, Responsive Design with CSS3
   ========================================= */

/* =====================
   CSS VARIABLES
   ===================== */
:root {
    /* Color Palette — Dark Cool Theme */
    --primary-color: #58a6ff;
    --primary-dark: #388bfd;
    --primary-light: #79c0ff;
    --secondary-color: #8b5cf6;
    --accent-color: #b45309;
    --accent-light: #d97706;

    --dark-bg: #0d1117;
    --dark-surface: #161b22;
    --dark-border: #30363d;

    --light-bg: #0d1117;
    --light-surface: #161b22;
    --light-border: #30363d;

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-light: #6e7681;
    --text-on-dark: #e6edf3;

    --success: #3fb950;
    --error: #f85149;
    --warning: #d29922;

    /* Typography */
    --font-primary: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Borders & Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Breakpoints */
    --mobile: 640px;
    --tablet: 768px;
    --desktop: 1024px;
    --wide: 1280px;
}

/* =====================
    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-primary);
    color: var(--text-primary);
    background-color: var(--light-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

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

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

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

a:hover {
    color: var(--accent-light);
}

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

/* =====================
    LAYOUT UTILITIES
   ===================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.lead {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.8;
}

/* =====================
    BUTTON STYLES
   ===================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(13, 17, 23, 0.92);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 var(--dark-border);
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.logo a:hover {
    color: var(--accent-light);
}

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

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: all var(--transition-base);
}

/* =====================
    HERO SECTION
   ===================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-md);
    background: linear-gradient(135deg, #0d1117 0%, #161b22 40%, #1c2432 100%);
    color: #e6edf3;
    position: relative;
    margin-top: 60px;
}

.hero-content {
    max-width: 800px;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: var(--spacing-md);
}

.hero-title .highlight {
    color: var(--accent-light);
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 175rem);
    font-weight: 300;
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    animation: bounce 2s infinite;
    color: var(--text-secondary);
    cursor: pointer;
}

.scroll-indicator {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--text-secondary));
}

/* =====================
    BUTTONS
   ===================== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    text-align: center;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
}

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

.btn-secondary {
    background-color: transparent;
    color: #e6edf3;
    border-color: var(--dark-border);
}

.btn-secondary:hover {
    background-color: var(--dark-surface);
    color: var(--accent-light);
    border-color: var(--accent-color);
}

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

.btn-outline:hover {
    background-color: var(--accent-color);
    color: #fff;
}

.btn-light {
    background-color: var(--accent-color);
    color: #fff;
}

.btn-light:hover {
    background-color: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-light {
    background-color: transparent;
    color: #e6edf3;
    border-color: var(--dark-border);
}

.btn-outline-light:hover {
    background-color: var(--dark-surface);
    color: var(--accent-light);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* =====================
    SECTIONS
   ===================== */
section {
    padding: var(--spacing-2xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, var(--accent-color), var(--accent-light));
    margin: var(--spacing-sm) auto;
    border-radius: var(--radius-sm);
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #0d1117 0%, #1c2432 100%);
    color: #e6edf3;
    text-align: center;
    padding: calc(80px + var(--spacing-xl)) var(--spacing-md) var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--dark-border);
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
}

/* =====================
    ABOUT SECTION
   ===================== */
.about-preview,
.biography-section {
    background-color: var(--light-surface);
}

.about-grid,
.bio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: var(--spacing-xl);
    align-items: center;
}

.about-image,
.bio-image {
    position: relative;
}

.about-image img,
.bio-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    object-fit: cover;
    aspect-ratio: 4/5;
}

.bio-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat {
    background-color: var(--dark-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--dark-border);
}

.stat h3 {
    color: var(--accent-light);
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.stat p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* =====================
    SKILLS SECTION
   ===================== */
.skills-section {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-surface) 100%);
    color: #fff;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.skill-card {
    background-color: rgba(255, 255, 255, 0.03);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 1px solid var(--dark-border);
}

.skill-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.skill-card h3 {
    color: #fff;
    margin-bottom: var(--spacing-sm);
}

.skill-card p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.skill-bar {
    width: 100%;
    height: 8px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(to right, var(--accent-color), var(--accent-light));
    border-radius: var(--radius-sm);
    transition: width 1s ease;
    width: 0;
}

/* =====================
    INTERESTS SECTION
   ===================== */
.interests-section {
    background-color: var(--dark-bg);
}

.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.interest-card {
    background-color: var(--dark-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 1px solid var(--dark-border);
}

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

.interest-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.interest-card h3 {
    color: var(--accent-light);
    margin-bottom: var(--spacing-sm);
}

.interest-card p{
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* =====================
    TIMELINE
   ===================== */
.education-timeline {
    background-color: var(--light-surface);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: var(--spacing-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--accent-color), var(--accent-light));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 0;
    width: 20px;
    height: 20px;
    background-color: var(--accent-color);
    border-radius: 50%;
    border: 4px solid var(--dark-bg);
    box-shadow: var(--shadow-md);
}

.timeline-date {
    display: inline-block;
    background-color: var(--accent-color);
    color: #fff;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.timeline-content {
    background-color: var(--dark-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--dark-border);
}

.timeline-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-content h4 {
    color: var(--accent-light);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.timeline-content .institution {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.coursework {
    background-color: rgba(255, 255, 255, 0.03);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
}

/* =====================
    VALUES SECTION
   ===================== */
.values-section {
    background: linear-gradient(135deg, #1c2432 0%, #0d1117 100%);
    color: #e6edf3;
    border-top: 1px solid var(--dark-border);
    border-bottom: 1px solid var(--dark-border);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.value-card {
    background-color: rgba(255, 255, 255, 0.04);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid var(--dark-border);
}

.value-card h3 {
    color: #fff;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.value-card p {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

/* =====================
    PROJECTS SECTION
   ===================== */
.projects-preview {
    background-color: var(--dark-bg);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.project-card {
    background-color: var(--dark-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 1px solid var(--dark-border);
}

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

.project-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

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

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

.project-content {
    padding: var(--spacing-lg);
}

.project-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.project-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag,
.tech-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: rgba(180, 83, 9, 0.15);
    color: var(--accent-light);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

/* =====================
    RESUME SECTION
   ===================== */
.resume-section {
    background-color: var(--light-surface);
}

.resume-container {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--dark-surface);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--dark-border);
}

.resume-header {
    text-align: center;
    padding: var(--spacing-xl);
    border-bottom: 2px solid var(--dark-border);
    margin-bottom: var(--spacing-xl);
}

.resume-header h2 {
    color: var(--accent-light);
    margin-bottom: var(--spacing-xs);
}

.resume-title {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.9rem;
}

.contact-item .icon {
    font-size: 1.2rem;
}

.resume-block {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--dark-border);
}

.resume-block:last-child {
    border-bottom: none;
}

.section-title {
    color: var(--accent-light);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--accent-color);
}

.resume-item {
    margin-bottom: var(--spacing-lg);
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xs);
}

.item-header h4 {
    color: var(--text-primary);
    margin: 0;
}

.date {
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 500;
}

.institution {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

.responsibilities {
    list-style-position: inside;
    padding-left: var(--spacing-md);
}

.responsibilities li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-xs);
}

.skills-category {
    margin-bottom: var(--spacing-lg);
}

.skills-category h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    background-color: rgba(180, 83, 9, 0.15);
    color: var(--accent-light);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

/* =====================
    PORTFOLIO PAGE
   ===================== */
.portfolio-filter {
    background-color: var(--light-surface);
    padding: var(--spacing-lg);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background-color: var(--dark-surface);
    color: var(--text-secondary);
    border: 2px solid var(--dark-border);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.portfolio-grid-section {
    background-color: var(--dark-bg);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    gap: var(--spacing-xl);
}

.portfolio-item {
    opacity: 1;
    transition: opacity var(--transition-base);
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-image {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    aspect-ratio: 16/11;
}

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

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

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

.portfolio-info {
    color: #fff;
}

.portfolio-info h3 {
    color: #fff;
    margin-bottom: var(--spacing-xs);
}

.portfolio-info p {
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.overlay-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.overlay-tags span {
    background-color: rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.portfolio-content {
    padding: var(--spacing-lg) 0;
}

.portfolio-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

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

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
}

.project-link {
    color: var(--accent-light);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: gap var(--transition-base);
}

.project-link:hover {
    gap: var(--spacing-sm);
}

.skill-mastery {
    background-color: var(--light-surface);
}

.mastery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.mastery-card {
    background-color: var(--dark-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
    box-shadow: var(--shadow-sm);
    border-top: 1px solid var(--dark-border);
    border-right: 1px solid var(--dark-border);
    border-bottom: 1px solid var(--dark-border);
}

.mastery-card h3 {
    color: var(--accent-light);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.mastery-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* =====================
    CONTACT PAGE
   ===================== */
.contact-section {
    background-color: var(--light-surface);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info-panel,
.contact-form-panel {
    background-color: var(--dark-surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--dark-border);
}

.contact-info-panel h2,
.contact-form-panel h2 {
    color: var(--accent-light);
    margin-bottom: var(--spacing-lg);
}

.contact-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.contact-details {
    margin-bottom: var(--spacing-xl);
}

.contact-details .contact-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    align-items: flex-start;
}

.contact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-text h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.contact-text p,
.contact-text a {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
}

.availability {
    background-color: rgba(255, 255, 255, 0.03);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--dark-border);
}

.availability h3 {
    color: var(--accent-light);
    margin-bottom: var(--spacing-sm);
}

.availability ul {
    list-style-position: inside;
    color: var(--text-secondary);
}

.availability li {
    margin-bottom: var(--spacing-xs);
}

/* Form Styles */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.required {
    color: var(--error);
}

.form-control {
    padding: 0.75rem;
    border: 2px solid var(--dark-border);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
    background-color: #0d1117;
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-light);
}

.form-control.error {
    border-color: var(--error);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.error-message {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: none;
}

.error-message.show {
    display: block;
}

.char-count {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: var(--spacing-xs);
}

.checkbox-group {
    flex-direction: row;
    align-items: flex-start;
}

.checkbox-label {
    display: flex;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 0.25rem;
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.success-message,
.form-error-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
}

.success-message {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 2px solid var(--success);
}

.form-error-message {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 2px solid var(--error);
}

/* FAQ Section */
.faq-section {
    background-color: var(--dark-bg);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
    gap: var(--spacing-lg);
}

.faq-item {
    background-color: var(--dark-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--dark-border);
}

.faq-item h3 {
    color: var(--accent-light);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.faq-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* =====================
    GALLERY PAGE
   ===================== */
.gallery-controls {
    background-color: var(--light-surface);
    padding: var(--spacing-lg) 0;
}

.gallery-controls .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.gallery-filter {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.gallery-filter-btn {
    padding: 0.5rem 1rem;
    background-color: var(--dark-surface);
    color: var(--text-secondary);
    border: 2px solid var(--dark-border);
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.gallery-filter-btn:hover,
.gallery-filter-btn.active {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.gallery-view-toggle {
    display: flex;
    gap: var(--spacing-xs);
}

.view-btn {
    width: 40px;
    height: 40px;
    background-color: var(--dark-surface);
    border: 2px solid var(--dark-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.view-btn:hover,
.view-btn.active {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.gallery-section {
    background-color: var(--dark-bg);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    gap: var(--spacing-lg);
}

.gallery-item {
    opacity: 1;
    transition: opacity var(--transition-base);
}

.gallery-item.hidden {
    display: none;
}

.gallery-image {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    aspect-ratio: 4/3;
    cursor: pointer;
}

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

.gallery-item:hover .gallery-image img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-info {
    color: #fff;
    width: 100%;
}

.gallery-info h3 {
    color: #fff;
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
}

.gallery-info p {
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.view-full-btn {
    background-color: var(--accent-color);
    color: #fff;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.view-full-btn:hover {
    background-color: var(--accent-light);
    color: #fff;
}

.gallery-caption {
    padding: var(--spacing-md) 0;
}

.gallery-caption h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.gallery-caption p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 2px solid #fff;
    border-radius: var(--radius-sm);
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.lightbox-close {
    top: -60px;
    right: 0;
}

.lightbox-prev {
    left: -70px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: -70px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-caption {
    text-align: center;
    color: #fff;
    margin-top: var(--spacing-md);
    font-size: 1.125rem;
}

.gallery-stats {
    background: linear-gradient(135deg, #1c2432 0%, #0d1117 100%);
    color: #e6edf3;
    border-top: 1px solid var(--dark-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
}

/* =====================
    BLOG STYLES
    ===================== */
/* Blog listing-grid */
.blog-section {
    padding: var(--spacing-2xl) 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
    gap: var(--spacing-lg);
}

/* Blog card (listing page) */
.blog-card {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base)
}

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

.blog-card-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

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

.blog-card-content h3 {
    margin: var(--spacing-xs) 0;
}

.blog-card-content h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.blog-card-content h3 a:hover {
    color: var(--accent-light);
}

.blog-date {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Individual blog post page */
.blog-post-section {
    padding: var(--spacing-2xl);
}

.blog-post {
    max-width: 780px;
    margin: 0 auto;
}

.blog-post-header {
    margin-bottom: var(--spacing-lg);
}

.blog-meta {
    display: flex;
    gap: var(--spacing-sm);
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

.blog-post-body {
    line-height: 1.8;
    color: var(--text-secondary);
}

.blog-post-body p {
    margin-top: var(--spacing-md);
}

.blog-post-body img {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.blog-post-body code {
    font-family: var(--font-mono);
    background: rgba(255, 255, 255, 0.06);
    padding: 0.15rem 0.4em;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    color: var(--accent-light);
}

.blog-post-body pre {
    background: var(--dark-bg);
    color: var(--text-on-dark);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.blog-post-body pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

.blog-post-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--dark-border);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .bio-grid {
        grid-template-columns: 1fr;
    }
}

/* =====================
    CTA SECTION
   ===================== */
.cta-section {
    background: linear-gradient(135deg, #1c2432 0%, #0d1117 100%);
    color: #e6edf3;
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-md);
    border-top: 1px solid var(--dark-border);
}

.cta-section h2 {
    color: #fff;
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* =====================
    FOOTER
   ===================== */
.footer {
    background-color: var(--dark-bg);
    color: var(--text-on-dark);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: #fff;
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    color: #fff;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-section ul a:hover {
    color: #fff;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.footer-note {
    margin-top: var(--spacing-xs);
    font-style: italic;
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade_in {
    animation: fadeIn 0.5s ease;
}

/* =====================
    RESPONSIVE DESIGN
   ===================== */
@media (max-width: 1024px) {
    .hero {
        min-height: 80vh;
    }

    .lightbox-prev {
        left: -60px;
    }

    .lightbox-next {
        right: -60px;
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: var(--dark-surface);
        width: 100%;
        text-align: center;
        transition: left var(--transition-base);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) 0;
        gap: 0;
        border-bottom: 1px solid var(--dark-border);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: var(--spacing-sm) 0;
    }

    /* Hero */
    .hero {
        min-height: 70vh;
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-scroll {
        display: none;
    }

    /* Sections */
    section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .page-header {
        padding: calc(70px + var(--spacing-lg)) var(--spacing-sm) var(--spacing-lg);
    }

    .page-header p {
        font-size: 1rem;
    }

    /* Grids */
    .about-grid,
    .bio-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid,
    .interests-grid,
    .projects-grid,
    .portfolio-grid,
    .gallery-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .bio-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }

    /* Contact */
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-info-panel,
    .contact-form-panel {
        padding: var(--spacing-lg);
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }

    /* Resume */
    .resume-container {
        padding: var(--spacing-lg);
    }

    .contact-info {
        flex-direction: column;
        align-items: flex-start;
    }

    .item-header {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    /* Blog post */
    .blog-post-section {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .blog-post-body {
        font-size: 0.95rem;
    }

    /* Timeline */
    .timeline {
        padding-left: var(--spacing-md);
    }

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

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

    /* Gallery controls */
    .gallery-controls .container {
        flex-direction: column;
        align-items: stretch;
    }

    .gallery-filter {
        justify-content: center;
    }

    .gallery-view-toggle {
        justify-content: center;
    }

    /* Lightbox */
    .lightbox-prev,
    .lightbox-next {
        display: none;
    }

    .lightbox-close {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .lightbox {
        padding: var(--spacing-sm);
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        align-items: center;
    }

    /* FAQ */
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    :root {
        --spacing-2xl: 3rem;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .values-grid,
    .mastery-grid {
        grid-template-columns: 1fr;
    }

    .bio-stats {
        grid-template-columns: 1fr;
    }

    .filter-buttons {
        flex-direction: column;
    }

    .filter-btn {
        width: 100%;
    }
}

/* Small phones */
@media (max-width: 380px) {
    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .container {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }

    section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .hero {
        min-height: 60vh;
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .resume-container {
        padding: var(--spacing-md);
    }

    .stat h3 {
        font-size: 1.5rem;
    }
}

/* =====================
    PRINT STYLES
   ===================== */
@media print {
    .navbar,
    .hero-scroll,
    .btn,
    .footer,
    .nav-toggle {
        display: none !important;
    }

    body {
        font-size: 12pt;
    }

    .resume-container {
        box-shadow: none;
        padding: 0;
    }

    .page-header {
        background: none;
        color: var(--text-primary);
        padding: var(--spacing-md) 0;
    }
}

/* =====================
    ACCESSIBILITY
   ===================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles */
*:focus-visible {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
}

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