/* Accessibility and Performance Improvements */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #3b82f6;
    --text-color: #1f2937;
    --text-color-rgb: 31, 41, 55;
    --bg-color: #f3f4f6;
    --bg-color-rgb: 243, 244, 246;
    --card-bg: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #60a5fa;
    --text-color: #f3f4f6;
    --text-color-rgb: 243, 244, 246;
    --bg-color: #111827;
    --bg-color-rgb: 17, 24, 39;
    --card-bg: #1f2937;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-color);
    transition: var(--transition);
}

/* Grid Background */
.grid-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    overflow: hidden;
    pointer-events: none;
    will-change: transform;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.small.justified.row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.square {
    width: 20px;
    height: 20px;
    background: var(--card-bg);
    opacity: 0.1;
    transition: var(--transition);
    animation: float 3s ease-in-out infinite;
}

.square:nth-child(3n) {
    animation-delay: 0.2s;
}

.square:nth-child(3n + 1) {
    animation-delay: 0.4s;
}

.square:nth-child(3n + 2) {
    animation-delay: 0.6s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

[data-theme="dark"] .square {
    background: var(--text-color);
}

[data-theme="dark"] .square:hover {
    opacity: 0.2;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    bottom: 2.5rem;
    left: 2.5rem;
    width: 45px;
    height: 45px;
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    z-index: 1000;
    border: 2px solid var(--primary-color);
}

.theme-toggle:hover {
    transform: translateY(-3px) rotate(15deg);
    box-shadow: var(--shadow-lg);
    background: var(--primary-color);
    color: white;
}

.theme-toggle i {
    font-size: 1.3rem;
    transition: transform 0.3s ease;
}

.theme-toggle:hover i {
    transform: scale(1.1);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 2rem;
    background: var(--card-bg);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 0.5rem 2rem;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1000;
}

.hamburger span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--text-color);
    transition: var(--transition);
}

.hamburger.active span:first-child {
    transform: translateY(9px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:last-child {
    transform: translateY(-9px) rotate(-45deg);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2rem;
    position: relative;
    z-index: 20;
    background: transparent;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    z-index: 25;
    position: relative;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.hero h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-color);
    opacity: 0.8;
}

.highlight {
    color: var(--primary-color);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* CTA Buttons */
.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button.secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.cta-button.secondary:hover {
    background: var(--primary-color);
    color: white;
}

/* Sections */
section {
    padding: 5rem 0;
    background: var(--bg-color);
    position: relative;
    z-index: 20;
    background-color: rgba(var(--bg-color-rgb), 0.97);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--text-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--primary-color);
}

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

.project-card {
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.project-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 10px 10px 0 0;
    background: var(--card-bg);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

/* Fix for image loading */
.project-image img[src*="images/"] {
    background: var(--card-bg);
    min-height: 200px;
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.project-info p {
    color: var(--text-color);
    opacity: 0.8;
    margin-bottom: 1rem;
}

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

.project-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

/* Skills Section */
.skills {
    display: block !important;
    position: relative;
    z-index: 20;
}

.skills-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    opacity: 1 !important;
}

.skill-card {
    opacity: 1 !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.skill-card:hover {
    transform: translateY(-5px);
}

.skill-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateX(5px);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.contact-item a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--primary-color);
}

/* Contact Form */
.contact-form {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
}

.form-group {
    position: relative;
    margin-bottom: 2rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: transparent;
    border: 2px solid rgba(var(--text-color-rgb), 0.1);
    border-radius: 5px;
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    padding: 0 0.25rem;
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
    pointer-events: none;
    opacity: 0.7;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -0.5rem;
    left: 0.8rem;
    font-size: 0.8rem;
    background: var(--card-bg);
    opacity: 1;
    color: var(--primary-color);
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.submit-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.submit-status {
    margin-bottom: 1rem;
    padding: 0.5rem;
    border-radius: 5px;
    font-size: 0.9rem;
    text-align: center;
    display: none;
}

.submit-status.success {
    display: block;
    background: #22c55e20;
    color: #22c55e;
    border: 1px solid #22c55e50;
}

.submit-status.error {
    display: block;
    background: #ef444420;
    color: #ef4444;
    border: 1px solid #ef444450;
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        margin-top: 2rem;
    }
}

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 2.5rem;
    right: 2.5rem;
    background: var(--primary-color);
    color: white;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    border: 2px solid var(--primary-color);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    animation: bounceIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.scroll-top i {
    font-size: 1.3rem;
    transition: transform 0.3s ease;
}

.scroll-top:hover i {
    transform: translateY(-2px);
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 0.9;
        transform: scale(1.1);
    }
    80% {
        opacity: 1;
        transform: scale(0.89);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Education Section */
.education {
    padding: 5rem 0;
    background: var(--bg-color);
}

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

.education-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.education-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.education-card .degree {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.education-card .duration {
    color: var(--text-color);
    opacity: 0.8;
}

/* Experience Section */
.experience {
    padding: 5rem 0;
    background: var(--bg-color);
}

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

.experience-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.experience-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.experience-card .company {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.experience-card .duration {
    color: var(--text-color);
    opacity: 0.8;
    margin-bottom: 1rem;
}

.experience-list {
    list-style: none;
    padding-left: 1.5rem;
}

.experience-list li {
    position: relative;
    margin-bottom: 0.5rem;
}

.experience-list li::before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: -1.5rem;
}

/* About Highlights */
.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    transition: var(--transition);
}

.highlight-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.highlight-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        right: -100%;
        width: 100vw;
        height: 100vh;
        background: rgba(17, 24, 39, 0.65); /* dark glass */
        backdrop-filter: blur(18px) saturate(180%);
        box-shadow: 0 0 40px 8px rgba(37,99,235,0.15), 0 0 0 2px #2563eb44;
        border-left: 2px solid #2563eb88;
        padding: 80px 2rem 2rem;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        transition: right 0.4s cubic-bezier(.77,0,.18,1);
        z-index: 90;
    }
    .nav-links.active {
        display: flex;
        right: 0;
    }
    .nav-links li {
        margin: 0.1rem 0;
        opacity: 0;
        transform: translateY(40px) scale(0.98);
        transition: opacity 0.5s, transform 0.5s cubic-bezier(.77,0,.18,1);
        font-size: 1.05rem;
        font-family: 'Fira Mono', 'Consolas', 'Menlo', monospace;
        letter-spacing: 1px;
        list-style: none;
        text-align: center;
    }
    .nav-links.active li {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    .nav-links.active li:nth-child(1) { transition-delay: 0.12s; }
    .nav-links.active li:nth-child(2) { transition-delay: 0.22s; }
    .nav-links.active li:nth-child(3) { transition-delay: 0.32s; }
    .nav-links.active li:nth-child(4) { transition-delay: 0.42s; }
    .nav-links.active li:nth-child(5) { transition-delay: 0.52s; }
    .nav-links.active li:nth-child(6) { transition-delay: 0.62s; }
    .nav-links.active li:nth-child(7) { transition-delay: 0.72s; }
    .nav-links.active li:nth-child(8) { transition-delay: 0.82s; }
    .nav-links a {
        color: #b5cdfa;
        text-decoration: none;
        display: inline-block;
        padding: 0.3rem 1rem;
        border-radius: 12px;
        font-size: 1.05rem;
        font-family: inherit;
        letter-spacing: 1px;
        transition: color 0.2s, box-shadow 0.2s, background 0.2s;
        box-shadow: 0 0 0px #2563eb00;
        position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
        color: #fff;
        background: rgba(37,99,235,0.13);
        box-shadow: 0 0 12px 2px #3b82f6cc, 0 0 0 2px #2563eb88;
        text-shadow: 0 0 8px #3b82f6cc;
    }
    .hamburger {
        display: flex;
        position: relative;
        z-index: 100;
        width: 40px;
        height: 40px;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        cursor: pointer;
        background: none;
        border: none;
        outline: none;
        transition: transform 0.3s;
    }
    .hamburger span {
        display: block;
        height: 3px;
        width: 30px;
        background-color: #3b82f6;
        margin: 5px 0;
        border-radius: 2px;
        transition: 0.4s cubic-bezier(.77,0,.18,1);
        box-shadow: 0 0 8px #2563eb88;
    }
    .hamburger.active span:nth-child(1) {
        transform: translateY(10px) rotate(45deg);
        background: #fff;
        box-shadow: 0 0 12px #3b82f6cc;
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: translateY(-10px) rotate(-45deg);
        background: #fff;
        box-shadow: 0 0 12px #3b82f6cc;
    }
    .nav-links a.active {
        color: #fff;
        font-weight: bold;
        border-bottom: 2px solid #3b82f6;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .grid-container {
        display: none;
    }

    .square {
        width: 15px;
        height: 15px;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

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

    .cta-button.secondary {
        margin-top: 1rem;
    }

    .projects-grid {
        display: flex !important;
        flex-direction: row;
        overflow-x: auto;
        gap: 1rem;
        padding: 1rem 0.5rem 1rem 0.5rem;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
    }
    .project-card {
        min-width: 260px;
        max-width: 300px;
        flex: 0 0 auto;
        background: rgba(255,255,255,0.95);
        border-radius: 18px;
        box-shadow: 0 2px 12px rgba(37,99,235,0.10);
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 0 0 1rem 0;
        margin: 0.25rem 0;
        scroll-snap-align: start;
        transition: box-shadow 0.2s;
    }
    .project-card:hover {
        box-shadow: 0 4px 18px rgba(37,99,235,0.18);
    }
    .project-image {
        border-radius: 18px 18px 0 0;
        overflow: hidden;
        min-height: 140px;
        max-height: 160px;
    }
    .project-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }
    .project-info {
        padding: 1rem;
    }
    .project-info h3 {
        font-size: 1.1rem;
        color: #2563eb;
        margin-bottom: 0.5rem;
        text-align: left;
    }
    .project-info p {
        font-size: 0.95rem;
        color: #222;
        margin-bottom: 0.5rem;
    }
    .project-links {
        gap: 0.5rem;
    }

    .education-grid,
    .experience-grid {
        grid-template-columns: 1fr;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

    .theme-toggle {
        bottom: 2rem;
        left: 2rem;
        width: 40px;
        height: 40px;
    }

    .scroll-top {
        bottom: 2rem;
        right: 2rem;
        width: 40px;
        height: 40px;
    }

    .skills-grid {
        display: flex !important;
        flex-direction: row;
        overflow-x: auto;
        gap: 1rem;
        padding: 1rem 0.5rem 1rem 0.5rem;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
    }
    .skill-card {
        min-width: 110px;
        max-width: 120px;
        flex: 0 0 auto;
        background: rgba(255,255,255,0.9);
        border-radius: 18px;
        box-shadow: 0 2px 12px rgba(37,99,235,0.10);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 1rem 0.5rem 0.5rem 0.5rem;
        margin: 0.25rem 0;
        scroll-snap-align: start;
        transition: box-shadow 0.2s;
    }
    .skill-card:hover {
        box-shadow: 0 4px 18px rgba(37,99,235,0.18);
    }
    .icon-bg {
        margin-bottom: 0.5rem;
    }
    .skill-card h3 {
        font-size: 1rem;
        margin: 0;
        text-align: center;
        color: #2563eb;
        font-weight: 600;
        letter-spacing: 0.5px;
    }

    .certifications-grid {
        display: flex !important;
        flex-direction: row;
        overflow-x: auto;
        gap: 1rem;
        padding: 1rem 0.5rem 1rem 0.5rem;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
    }
    .certification-card {
        min-width: 260px;
        max-width: 320px;
        flex: 0 0 auto;
        background: rgba(255,255,255,0.95);
        border-radius: 18px;
        box-shadow: 0 2px 12px rgba(37,99,235,0.10);
        display: flex;
        flex-direction: row;
        align-items: flex-start;
        justify-content: flex-start;
        padding: 1rem;
        margin: 0.25rem 0;
        scroll-snap-align: start;
        transition: box-shadow 0.2s;
        gap: 1rem;
    }
    .certification-card:hover {
        box-shadow: 0 4px 18px rgba(37,99,235,0.18);
    }
    .certification-icon {
        width: 50px;
        height: 50px;
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        background: #e8f0fe;
        color: #2563eb;
        flex-shrink: 0;
    }
    .certification-content h3 {
        font-size: 1.05rem;
        color: #2563eb;
        margin-bottom: 0.3rem;
        font-weight: 600;
    }
    .certification-content .issuer {
        font-size: 0.95rem;
        color: #222;
        margin-bottom: 0.2rem;
    }
    .certification-content .date {
        font-size: 0.85rem;
        color: #666;
        margin-bottom: 0.5rem;
    }
    .certification-skills {
        gap: 0.3rem;
    }

    .section-title {
        margin-top: 2.5rem;
        padding-top: 1.5rem;
        border-top: 1.5px solid #e5e7eb;
        position: relative;
    }
    .section-title:first-child {
        margin-top: 0;
        padding-top: 0;
        border-top: none;
    }
}

#particles-js {
    position: fixed;
    width: 100%;
    height: 100vh;
    top: 0;
    left: 0;
    background-color: transparent;
    z-index: 15;
    pointer-events: none;
}

#particles-js canvas {
    display: block;
    -webkit-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
    opacity: 1;
    -webkit-transition: opacity .8s ease, -webkit-transform 1.4s ease;
    transition: opacity .8s ease, transform 1.4s ease;
    pointer-events: none;
}

/* Dark mode specific styles */
[data-theme="dark"] .theme-toggle {
    background: var(--card-bg);
    color: var(--text-color);
    border-color: var(--primary-color);
}

[data-theme="dark"] .theme-toggle:hover {
    background: var(--primary-color);
    color: white;
}

[data-theme="dark"] .scroll-top {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

[data-theme="dark"] .scroll-top:hover {
    background: var(--primary-dark);
}

/* Certifications Section */
.certifications {
    padding: 5rem 0;
    background: var(--bg-color);
}

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

.certification-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

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

.certification-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    transition: var(--transition);
}

.certification-card:hover .certification-icon {
    transform: scale(1.1) rotate(5deg);
    background: var(--primary-dark);
}

.certification-content {
    flex-grow: 1;
}

.certification-content h3 {
    color: var(--text-color);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.certification-content .issuer {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.certification-content .date {
    color: var(--text-color);
    opacity: 0.7;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.certification-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: rgba(var(--bg-color-rgb), 0.8);
    color: var(--text-color);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.85rem;
    transition: var(--transition);
}

.certification-card:hover .skill-tag {
    background: var(--primary-color);
    color: white;
}

@media (max-width: 768px) {
    .certification-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.5rem;
    }

    .certification-icon {
        margin-bottom: 1rem;
    }

    .certifications-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Skip link styles */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    z-index: 100;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

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

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

/* Fallback for older browsers */
@supports not (display: grid) {
    .grid-container {
        display: flex;
        flex-wrap: wrap;
    }
}

/* Remove preloader styles */
.preloader {
    position: fixed;
    z-index: 2000;
    top: 0; left: 0; right: 0; bottom: 0;
    background: #111827;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s;
}

.preloader-spinner {
    width: 48px;
    height: 48px;
    border: 5px solid #2563eb;
    border-top: 5px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.preloader.hide {
    opacity: 0;
    pointer-events: none;
}

/* Remove loading class styles */
body.loading {
    overflow: auto;
}

body.loading > *:not(.preloader) {
    display: block;
}

[data-theme="dark"] .preloader {
  background: #111827;
}
[data-theme="dark"] .preloader-spinner {
  border: 5px solid #fff;
  border-top: 5px solid #2563eb;
}

/* Dark Mode Specific Styles */
[data-theme="dark"] .navbar {
    background: var(--card-bg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .contact-form {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    background: var(--card-bg);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group textarea:focus {
    border-color: var(--primary-color);
}

[data-theme="dark"] .form-group label {
    background: var(--card-bg);
}

[data-theme="dark"] .contact-item {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .submit-status.success {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.2);
}

[data-theme="dark"] .submit-status.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
}