/* ===== CSS VARIABLES ===== */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1419;
    --bg-tertiary: #161b26;
    
    --accent: #00f0ff;
    --accent-dim: #0080ff;
    --accent-glow: rgba(0, 240, 255, 0.2);
    
    --success: #00ff9f;
    --warning: #ffb700;
    
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-dim: #6b7280;
    
    --glass-bg: rgba(15, 20, 25, 0.6);
    --glass-border: rgba(0, 240, 255, 0.1);
    
    --font-display: 'Orbitron', monospace;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Light Mode Variables */
[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f2f5;
    
    --accent: #0066cc;
    --accent-dim: #0052a3;
    --accent-glow: rgba(0, 102, 204, 0.2);
    
    --success: #00a86b;
    --warning: #ff8c00;
    
    --text-primary: #0d1117;
    --text-secondary: #57606a;
    --text-dim: #8b949e;
    
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 102, 204, 0.2);
}

/* Light mode specific adjustments */
[data-theme="light"] .image-container img {
    filter: grayscale(0%);
}

[data-theme="light"] .terminal-window,
[data-theme="light"] .code-block {
    background: #f6f8fa;
    border: 1px solid #d0d7de;
}

[data-theme="light"] .terminal-header,
[data-theme="light"] .code-header {
    background: #ffffff;
    border-bottom: 1px solid #d0d7de;
}

[data-theme="light"] .terminal-body {
    background: #f6f8fa;
}

[data-theme="light"] .nav {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid rgba(0, 102, 204, 0.15);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] #particles {
    opacity: 0.5;
}

[data-theme="light"] .skill-category,
[data-theme="light"] .timeline-content,
[data-theme="light"] .education-card,
[data-theme="light"] .course-card,
[data-theme="light"] .cert-card,
[data-theme="light"] .contact-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #e1e4e8;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .skill-category:hover,
[data-theme="light"] .timeline-content:hover,
[data-theme="light"] .education-card:hover,
[data-theme="light"] .course-card:hover,
[data-theme="light"] .cert-card:hover,
[data-theme="light"] .contact-card:hover {
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.15);
}

[data-theme="light"] .cert-badge {
    background: #f6f8fa;
}

[data-theme="light"] .btn-primary {
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.25);
}

[data-theme="light"] .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.35);
}

[data-theme="light"] .code-content {
    background: #f6f8fa;
    color: var(--text-secondary);
}

[data-theme="light"] .terminal-line,
[data-theme="light"] .terminal-output {
    color: var(--text-secondary);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-mono);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    cursor: default;
}

/* Improve cursor visibility in light mode */
[data-theme="light"] body {
    cursor: default;
}

[data-theme="light"] a,
[data-theme="light"] button,
[data-theme="light"] .contact-card,
[data-theme="light"] .cert-card,
[data-theme="light"] .skill-category,
[data-theme="light"] .course-card,
[data-theme="light"] .education-card,
[data-theme="light"] .nav-link,
[data-theme="light"] .theme-toggle,
[data-theme="light"] .nav-toggle,
[data-theme="light"] .btn, 
[data-theme="light"] .project-card {
    cursor: pointer;
}

/* Dark mode background gradient */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(0, 128, 255, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(0, 255, 159, 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    opacity: 1;
    transition: all 0.5s ease;
    animation: gradientShift 20s ease infinite;
}

@keyframes gradientShift {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(3%, -3%) scale(1.02);
    }
    66% {
        transform: translate(-3%, 3%) scale(0.98);
    }
}

[data-theme="light"] body::before {
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(0, 102, 204, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(0, 168, 107, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 50% 0%, rgba(0, 102, 204, 0.03) 0%, transparent 40%);
    opacity: 1;
    animation: gradientShift 20s ease infinite;
}

/* Custom cursor */
* {
    cursor: inherit;
}

a, button, .contact-card, .cert-card, .skill-category, 
.course-card, .education-card, .nav-link, .theme-toggle,
.nav-toggle, .timeline-item, .cert-link, .btn, 
.tool-card, .stat-item, .project-card {
    cursor: pointer;
}

/* Better focus visibility */
a:focus-visible, button:focus-visible,
.contact-card:focus-visible, .cert-card:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 8px;
}

/* Dot pattern overlay */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle, rgba(0, 240, 255, 0.08) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
    z-index: 0;
    opacity: 1;
}

[data-theme="light"] body::after {
    background-image: radial-gradient(circle, rgba(0, 102, 204, 0.12) 1px, transparent 1px);
    background-size: 25px 25px;
}

/* ===== PARTICLE BACKGROUND ===== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition-smooth);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terminal-prompt {
    color: var(--success);
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

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

.nav-link:hover::before {
    width: 100%;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: scale(1.05);
}

.theme-icon {
    position: absolute;
    font-size: 1.3rem;
    transition: var(--transition-smooth);
}

.theme-icon.sun {
    opacity: 0;
    transform: rotate(180deg) scale(0);
}

.theme-icon.moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="light"] .theme-icon.sun {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="light"] .theme-icon.moon {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--accent);
    transition: var(--transition-smooth);
}

/* Terminal text color classes that adapt to theme */
.terminal-text-primary {
    color: var(--text-primary);
}

.terminal-text-accent {
    color: var(--accent);
}

.terminal-text-secondary {
    color: var(--text-secondary);
}

.terminal-text-success {
    color: var(--success);
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 2rem;
    margin-top: 80px;
    z-index: 10;
}

.hero-content {
    max-width: 900px;
    width: 100%;
    position: relative;
    z-index: 10;
}

.terminal-window {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.1);
    animation: fadeInUp 0.8s ease;
}

.terminal-header {
    background: var(--bg-tertiary);
    padding: 0.8rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

.terminal-buttons {
    display: flex;
    gap: 0.5rem;
}

.terminal-button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-button.close { background: #ff5f56; }
.terminal-button.minimize { background: #ffbd2e; }
.terminal-button.maximize { background: #27c93f; }

.terminal-title {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.terminal-body {
    padding: 2rem;
    font-family: var(--font-mono);
    min-height: 300px;
}

.terminal-line {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.terminal-path {
    color: var(--accent);
}

.terminal-output {
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-top: 1rem;
}

.terminal-prompt {
    color: var(--success);
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

.btn-primary:hover {
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: var(--accent);
    color: var(--bg-primary);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    animation: fadeIn 1s ease 1s both;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--accent);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--accent);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

.arrow-container {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.arrow {
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--accent);
    border-bottom: 2px solid var(--accent);
    transform: rotate(45deg);
    animation: bounce 1.5s infinite;
}

.arrow:nth-child(2) {
    animation-delay: 0.2s;
}

/* ===== SECTIONS ===== */
section {
    position: relative;
    z-index: 10;
    padding: 6rem 2rem;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: 4rem;
    text-align: center;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.text-accent {
    color: var(--accent);
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: start;
}

.about-image {
    position: relative;
    max-width: 350px;
    margin: 5rem auto;
}

.image-container {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
}

.image-container img {
    width: 100%;
    height: auto;
    display: block;
    filter: grayscale(20%);
    transition: var(--transition-smooth);
    object-fit: cover;
}

.image-container:hover img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.image-frame {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid var(--accent);
    border-radius: 12px;
    pointer-events: none;
}

.code-block {
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 2rem;
}

.code-header {
    background: var(--bg-primary);
    padding: 0.8rem 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--glass-border);
}

.code-content {
    padding: 1.5rem;
    overflow-x: auto;
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    transition: var(--transition-smooth);
}

.stat-item:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ===== SKILLS SECTION ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.skill-category {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition-smooth);
}

.skill-category:hover {
    border-color: var(--accent);
    box-shadow: 0 10px 40px var(--accent-glow);
    transform: translateY(-5px);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

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

.skill-header h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.skill-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--glass-border);
    transition: var(--transition-smooth);
}

.skill-item:hover {
    border-color: var(--accent);
    background: var(--glass-bg);
}

.skill-name {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

.skill-years {
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 600;
    font-family: var(--font-mono);
}

[data-theme="light"] .skill-item {
    background: #ffffff;
    border: 1px solid #e1e4e8;
}

[data-theme="light"] .skill-item:hover {
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(0, 102, 204, 0.1);
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-badge {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.tech-badge:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ===== EXPERIENCE SECTION ===== */
.experience {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 4rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), transparent);
}

.timeline-item {
    position: relative;
    padding-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: -3.5rem;
    top: 0;
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--accent-glow);
}

.timeline-content {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition-smooth);
}

.timeline-content:hover {
    border-color: var(--accent);
    box-shadow: 0 10px 40px var(--accent-glow);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent);
}

.timeline-status {
    padding: 0.3rem 0.8rem;
    background: var(--success);
    color: var(--bg-primary);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.timeline-status.completed {
    background: var(--text-dim);
}

.timeline-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.timeline-company {
    font-size: 1.1rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

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

.tag {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    color: var(--text-secondary);
}

.tag:hover {
    border-color: var(--accent);
    background: var(--bg-tertiary);
}

.subsection-title {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    color: var(--accent);
    margin-bottom: 2rem;
    text-align: center;
}

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

.education-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    gap: 1.5rem;
    transition: var(--transition-smooth);
}

.education-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
}

.education-icon {
    font-size: 2.5rem;
}

.education-content h4 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.education-degree {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.education-year {
    display: block;
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 600;
    margin-top: 0.5rem;
}

.education-achievement {
    display: block;
    margin-top: 1rem;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--warning);
    border: 1px solid var(--glass-border);
    font-weight: 600;
}

[data-theme="light"] .education-achievement {
    background: rgba(255, 184, 0, 0.1);
    color: #d97706;
    border-color: rgba(255, 184, 0, 0.3);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    height: 100%;
}

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--accent-glow);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.project-icon {
    font-size: 2rem;
    filter: drop-shadow(0 2px 8px var(--accent-glow));
}

.project-tag {
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
    background: rgba(0, 240, 255, 0.1);
    color: var(--accent);
    border-radius: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

[data-theme="light"] .project-tag {
    background: rgba(0, 102, 204, 0.1);
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

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

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-tag {
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.tech-tag:hover {
    border-color: var(--accent);
    background: var(--bg-tertiary);
}

.project-footer {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--glass-border);
}

.project-context {
    font-size: 0.85rem;
    color: var(--text-dim);
    font-style: italic;
}

/* ===== COURSES & TRAINING SECTION ===== */
.courses {
    background: var(--bg-primary);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.course-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent), var(--accent-dim));
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.course-card:hover::before {
    transform: scaleY(1);
}

.course-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--accent-glow);
}

.course-provider {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--accent);
    background: rgba(0, 240, 255, 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
}

.course-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.course-year {
    display: block;
    font-size: 0.9rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
}

/* ===== CERTIFICATIONS ===== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.cert-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.cert-card:hover {
    border-color: var(--accent);
    box-shadow: 0 10px 40px var(--accent-glow);
    transform: translateY(-5px);
}

.cert-badge {
    padding: 1.5rem;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 350px;
    flex-shrink: 0;
    overflow: hidden;
}

.cert-badge img {
    max-width: 100%;
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: none;
    border-radius: 4px;
}

[data-theme="light"] .cert-badge {
    background: #fafbfc;
}

.cert-content {
    padding: 2rem;
}

.cert-issuer {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
    text-transform: uppercase;
}

.cert-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0.5rem 0;
}

.cert-code {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.cert-validity {
    display: block;
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 1rem;
}

.cert-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.cert-link:hover {
    gap: 1rem;
}

/* ===== CONTACT SECTION ===== */
.contact {
    background: var(--bg-secondary);
}

.contact-content-single {
    max-width: 900px;
    margin: 0 auto;
}

.contact-intro {
    margin-bottom: 3rem;
    text-align: center;
}

.contact-intro h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.contact-intro p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.contact-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 2rem;
    text-decoration: none;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-dim), var(--accent));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.contact-card:hover::before {
    transform: scaleX(1);
}

.contact-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px var(--accent-glow);
}

.contact-card.location-card {
    cursor: default;
}

.contact-card.location-card:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--glass-border);
}

.contact-card.location-card::before {
    display: none;
}

.contact-icon {
    font-size: 2.5rem;
    line-height: 1;
    filter: drop-shadow(0 5px 15px rgba(0, 240, 255, 0.3));
}

.contact-info-text {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
}

.contact-label {
    font-size: 0.85rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.contact-value {
    font-size: 1.05rem;
    color: var(--text-primary);
    font-weight: 500;
    word-break: break-word;
}

.contact-card:hover .contact-value {
    color: var(--accent);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--glass-border);
    padding: 3rem 2rem 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 1rem;
}

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

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.footer-column h4 {
    margin-bottom: 1rem;
    color: var(--accent);
    font-family: var(--font-display);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: var(--transition-smooth);
}

.footer-column a:hover {
    color: var(--accent);
    padding-left: 0.5rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-dim);
    font-size: 0.9rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-code {
    font-family: var(--font-mono);
    color: var(--accent);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

@keyframes scroll {
    0% {
        opacity: 0;
        transform: translate(-50%, -8px);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translate(-50%, 8px);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0) rotate(45deg);
    }
    50% {
        transform: translateY(10px) rotate(45deg);
    }
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.blink {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].animate {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .nav-menu {
        gap: 1.5rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 80px);
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 2rem;
        transition: right 0.3s ease;
        border-left: 1px solid var(--glass-border);
        gap: 0;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .theme-toggle {
        margin-right: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero {
        margin-top: 60px;
        padding: 1.5rem;
    }
    
    .terminal-body {
        padding: 1.5rem;
        min-height: 250px;
    }
    
    .terminal-output {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .certs-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
    
    .timeline {
        padding-left: 2rem;
    }
    
    .timeline-marker {
        left: -2.5rem;
    }
    
    .education-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    section {
        padding: 4rem 1rem;
    }
    
    .nav-container {
        padding: 1rem 1.5rem;
    }
    
    .nav-logo {
        font-size: 1.3rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .terminal-body {
        padding: 1rem;
    }
    
    .terminal-output {
        font-size: 0.9rem;
    }
    
    .about-stats {
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .skill-header h3 {
        font-size: 1.1rem;
    }
    
    .timeline-content {
        padding: 1.5rem;
    }
    
    .timeline-title {
        font-size: 1.2rem;
    }
    
    .project-card,
    .course-card,
    .cert-card,
    .contact-card {
        padding: 1.5rem;
    }
    
    .project-title,
    .course-title,
    .cert-title {
        font-size: 1.1rem;
    }
    
    .contact-intro h3 {
        font-size: 1.5rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .cert-badge {
        padding: 1rem;
        min-height: 250px;
    }
}