/* ============================================
   ROOT VARIABLES - LIGHT MODE (DEFAULT)
   ============================================ */
:root {
    /* Colors - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    
    /* Accent Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --card-bg: #1e293b;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    
    /* Accent adjustments for dark mode */
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #93c5fd;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

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

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

a:hover {
    color: var(--primary-dark);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-weight: 700;
    font-size: 1.5rem;
}

.logo-text {
    color: var(--text-primary);
}

.logo-badge {
    color: var(--primary);
    font-size: 0.9rem;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid transparent;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
    color: var(--primary);
}

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

/* GitHub Link */
.github-link {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.github-link:hover {
    color: var(--text-primary);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

.mobile-menu {
    display: none;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md);
}

.mobile-nav-list {
    list-style: none;
}

.mobile-nav-link {
    display: block;
    padding: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 500;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

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

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--border-color);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-image {
    position: relative;
    text-align: center;
}

.profile-placeholder {
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

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

.profile-fallback {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: var(--spacing-md);
    padding: 8px 16px;
    background-color: var(--card-bg);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    box-shadow: var(--card-shadow);
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

.greeting {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 500;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.hero-location {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
}

.hero-description {
    font-size: 1.1rem;
    margin: var(--spacing-sm) 0;
}

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

.hero-tagline {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 550px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   CURRENT FOCUS SECTION
   ============================================ */
.current-focus {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-primary);
}

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

.focus-card {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.focus-card:hover {
    transform: translateY(-4px);
}

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

.focus-card h3 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

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

/* ============================================
   FEATURED PROJECTS
   ============================================ */
.featured-projects {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

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

.section-title {
    margin-bottom: var(--spacing-xs);
}

.section-subtitle {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.github-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--card-bg);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    box-shadow: var(--card-shadow);
}

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

.project-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.project-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

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

.project-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tech-tag {
    padding: 4px 10px;
    background-color: var(--bg-tertiary);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

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

/* ============================================
   EDUCATION HIGHLIGHT
   ============================================ */
.education-highlight {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-primary);
}

.edu-card {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 16px;
    color: white;
}

.edu-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
}

.grad-year {
    font-size: 2rem;
    font-weight: 700;
}

.grad-status {
    font-size: 0.875rem;
    opacity: 0.9;
}

.edu-content h3 {
    color: white;
    margin-bottom: var(--spacing-xs);
}

.edu-institution {
    font-size: 1.1rem;
    opacity: 0.95;
}

.edu-partner {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: var(--spacing-sm);
}

.edu-desc {
    opacity: 0.9;
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

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

.testimonial-card {
    background-color: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    position: relative;
}

.testimonial-quote {
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.3;
    position: absolute;
    top: 10px;
    left: 20px;
    font-family: serif;
}

.testimonial-text {
    position: relative;
    z-index: 1;
    margin: var(--spacing-md) 0;
    color: var(--text-primary);
    font-style: italic;
}

.testimonial-author {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-md);
}

.testimonial-author strong {
    display: block;
    color: var(--text-primary);
}

.testimonial-author span {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   PAGE HEADER (About, Projects, Contact)
   ============================================ */
.page-header {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* ============================================
   ABOUT PAGE STYLES
   ============================================ */
.bio-section {
    padding: var(--spacing-2xl) 0;
}

.bio-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-2xl);
}

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

.quick-facts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.fact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.fact-emoji {
    font-size: 1.2rem;
}

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

.stat-box {
    background-color: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--card-shadow);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* Timeline */
.education-section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: var(--spacing-xl);
}

.timeline-marker {
    position: absolute;
    left: 11px;
    top: 5px;
    width: 20px;
    height: 20px;
    background-color: var(--primary);
    border-radius: 50%;
    border: 4px solid var(--bg-primary);
}

.timeline-content {
    background-color: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

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

.timeline-year {
    color: var(--primary);
    font-weight: 600;
}

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

.timeline-partner {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.timeline-status {
    display: inline-block;
    margin-top: var(--spacing-sm);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-completed {
    background-color: var(--success);
    color: white;
}

.status-in_progress {
    background-color: var(--warning);
    color: white;
}

/* Certifications */
.certifications-section {
    padding: var(--spacing-2xl) 0;
}

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

.category-title {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--border-color);
}

.category-title.in-progress {
    border-bottom-color: var(--warning);
}

.category-title.completed {
    border-bottom-color: var(--success);
}

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

.cert-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

.cert-icon {
    font-size: 2rem;
}

.cert-info h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.cert-issuer {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.cert-status {
    display: inline-block;
    margin-top: 4px;
    padding: 2px 8px;
    background-color: var(--warning);
    color: white;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 500;
}

.cert-year {
    color: var(--success);
    font-size: 0.8rem;
    font-weight: 500;
}

/* Skills */
.skills-section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.skills-category h3 {
    margin-bottom: var(--spacing-md);
}

.skills-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    padding: 8px 16px;
    background-color: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.skill-tag.soft {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.tools-section {
    margin-top: var(--spacing-xl);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: var(--spacing-sm);
    background-color: var(--card-bg);
    border-radius: 8px;
    font-size: 0.9rem;
}

.tool-icon {
    font-size: 1.2rem;
}

/* ============================================
   PROJECTS PAGE STYLES
   ============================================ */
.github-header-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
}

.projects-filter {
    padding: var(--spacing-lg) 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

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

.filter-btn {
    padding: 8px 20px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: white;
}

.all-projects {
    padding: var(--spacing-2xl) 0;
}

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

.project-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--primary);
    font-weight: 500;
}

.more-projects-cta {
    text-align: center;
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background-color: var(--card-bg);
    border-radius: 12px;
}

.more-projects-cta p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

/* ============================================
   CONTACT PAGE STYLES
   ============================================ */
.contact-section {
    padding: var(--spacing-2xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

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

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.contact-card {
    padding: var(--spacing-md);
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

.contact-icon {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.contact-card h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-card a {
    color: var(--primary);
    text-decoration: none;
}

.response-time {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.contact-social h3 {
    margin-bottom: var(--spacing-md);
}

/* Contact Form */
.contact-form-wrapper {
    background-color: var(--card-bg);
    padding: var(--spacing-xl);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

.contact-form {
    margin-top: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-primary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Placeholder Styling */
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
    font-size: 0.9rem;
}

.form-group input:focus::placeholder,
.form-group textarea:focus::placeholder {
    opacity: 0.4;
}

.form-success {
    text-align: center;
    padding: var(--spacing-xl);
}

.form-success svg {
    color: var(--success);
    margin-bottom: var(--spacing-md);
}

.form-error {
    padding: var(--spacing-sm);
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    border-radius: 8px;
    color: var(--danger);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   SOCIAL LINKS (Brand Colors on Hover)
   ============================================ */
.social-links-large-vertical {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: var(--spacing-md);
}

.social-link-large {
    display: grid;
    grid-template-columns: 32px 1fr;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background-color: var(--card-bg);
    border-radius: 12px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    font-weight: 500;
    cursor: pointer;
}

.social-link-large:hover {
    transform: translateX(5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.social-link-large .social-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.social-link-large svg {
    width: 24px;
    height: 24px;
    display: block;
    transition: var(--transition);
}

.social-link-large .social-name {
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition);
}

/* GitHub - Black */
.social-link-large[href*="github"]:hover {
    border-color: #333333;
    background-color: rgba(51, 51, 51, 0.06);
}
.social-link-large[href*="github"]:hover svg {
    fill: #333333;
}
.social-link-large[href*="github"]:hover .social-name {
    color: #333333;
}

/* LinkedIn - Blue */
.social-link-large.linkedin:hover,
.social-link-large[href*="linkedin"]:hover {
    border-color: #0A66C2;
    background-color: rgba(10, 102, 194, 0.06);
}
.social-link-large.linkedin:hover svg,
.social-link-large[href*="linkedin"]:hover svg {
    fill: #0A66C2;
}
.social-link-large.linkedin:hover .social-name,
.social-link-large[href*="linkedin"]:hover .social-name {
    color: #0A66C2;
}

/* Instagram - Pink */
.social-link-large.instagram:hover,
.social-link-large[href*="instagram"]:hover {
    border-color: #E1306C;
    background: linear-gradient(45deg, rgba(244, 148, 51, 0.06), rgba(188, 24, 136, 0.06));
}
.social-link-large.instagram:hover svg,
.social-link-large[href*="instagram"]:hover svg {
    fill: #E1306C;
}
.social-link-large.instagram:hover .social-name,
.social-link-large[href*="instagram"]:hover .social-name {
    color: #E1306C;
}

/* Telegram - Light Blue */
.social-link-large.telegram:hover,
.social-link-large[href*="telegram"]:hover,
.social-link-large[href*="t.me"]:hover {
    border-color: #26A5E4;
    background-color: rgba(38, 165, 228, 0.06);
}
.social-link-large.telegram:hover svg,
.social-link-large[href*="telegram"]:hover svg,
.social-link-large[href*="t.me"]:hover svg {
    fill: #26A5E4;
}
.social-link-large.telegram:hover .social-name,
.social-link-large[href*="telegram"]:hover .social-name,
.social-link-large[href*="t.me"]:hover .social-name {
    color: #26A5E4;
}

/* Facebook - Blue */
.social-link-large.facebook:hover,
.social-link-large[href*="facebook"]:hover {
    border-color: #1877F2;
    background-color: rgba(24, 119, 242, 0.06);
}
.social-link-large.facebook:hover svg,
.social-link-large[href*="facebook"]:hover svg {
    fill: #1877F2;
}
.social-link-large.facebook:hover .social-name,
.social-link-large[href*="facebook"]:hover .social-name {
    color: #1877F2;
}

/* Discord - Purple */
.social-link-large.discord:hover,
.social-link-large[href*="discord"]:hover {
    border-color: #5865F2;
    background-color: rgba(88, 101, 242, 0.06);
}
.social-link-large.discord:hover svg,
.social-link-large[href*="discord"]:hover svg {
    fill: #5865F2;
}
.social-link-large.discord:hover .social-name,
.social-link-large[href*="discord"]:hover .social-name {
    color: #5865F2;
}

/* Discord Server Badge */
.social-link-large.discord .server-badge {
    font-size: 0.7rem;
    background-color: #5865F2;
    color: white;
    padding: 2px 8px;
    border-radius: 20px;
    margin-left: auto;
    font-weight: 500;
}

.social-link-large.discord:hover .server-badge {
    background-color: white;
    color: #5865F2;
}

/* Dark Mode Adjustments */
[data-theme="dark"] .social-link-large[href*="github"]:hover svg {
    fill: #ffffff;
}
[data-theme="dark"] .social-link-large[href*="github"]:hover .social-name {
    color: #ffffff;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-info h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.footer-info p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.footer-location {
    margin-top: var(--spacing-sm);
}

.footer-links h4,
.footer-social h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

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

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

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

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

.social-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.social-link:hover {
    color: var(--primary);
}

.social-emoji {
    font-size: 1.2rem;
    margin-right: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .bio-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid,
    .projects-grid.full-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu.active {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .focus-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid,
    .projects-grid.full-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .certs-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        align-items: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .social-link-large {
        grid-template-columns: 28px 1fr;
        padding: 12px 16px;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        justify-content: center;
    }
    
    .edu-card {
        flex-direction: column;
        text-align: center;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
}