/* ==================== CSS VARIABLES ==================== */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --dark-bg: #1a1f3a;
    --light-bg: #f7fafc;
    --text-dark: #2d3748;
    --text-light: #718096;
    --white: #ffffff;
    --card-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 10px 30px rgba(102, 126, 234, 0.2);
    --transition: all 0.3s ease;
    --border-radius: 15px;
    --section-padding: 5rem 2rem;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --light-bg: #1a202c;
    --white: #2d3748;
    --text-dark: #e2e8f0;
    --text-light: #a0aec0;
    --dark-bg: #0f1419;
    --card-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 10px 30px rgba(102, 126, 234, 0.4);
}

[data-theme="dark"] body {
    background: #1a202c;
}

[data-theme="dark"] .navbar {
    background: rgba(45, 55, 72, 0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .navbar.scrolled {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .nav-menu {
    background: #2d3748;
}

[data-theme="dark"] .hero-background {
    opacity: 0.05;
}

[data-theme="dark"] .timeline-content,
[data-theme="dark"] .experience-card,
[data-theme="dark"] .project-card,
[data-theme="dark"] .achievement-card,
[data-theme="dark"] .blog-card,
[data-theme="dark"] .contact-form {
    background: #2d3748;
}

[data-theme="dark"] .timeline-dot {
    border-color: #2d3748;
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    background: #1a202c;
    border-color: #4a5568;
    color: var(--text-dark);
}

[data-theme="dark"] .form-group input::placeholder,
[data-theme="dark"] .form-group textarea::placeholder {
    color: var(--text-light);
}

[data-theme="dark"] .about-image .image-placeholder,
[data-theme="dark"] .project-image .image-placeholder,
[data-theme="dark"] .blog-image .image-placeholder {
    opacity: 0.9;
}

[data-theme="dark"] .tool-card {
    background: rgba(102, 126, 234, 0.1);
    border-color: rgba(102, 126, 234, 0.2);
}

[data-theme="dark"] .tool-card:hover {
    background: rgba(102, 126, 234, 0.2);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ==================== NAVIGATION BAR STYLES ==================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* ==================== LOGO / FAVICON STYLES ==================== */
.logo {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.75rem;
    text-decoration: none;
}

/* Logo background effect matching favicon */
.logo::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0.1;
    border-radius: 8px;
    transition: var(--transition);
    z-index: -1;
}

.logo:hover {
    transform: scale(1.05) rotate(-2deg);
}

.logo:hover::before {
    opacity: 0.15;
    transform: scale(1.1);
}

/* Logo text styling */
.logo span {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    letter-spacing: -0.02em;
}

/* Active state for logo */
.logo:active {
    transform: scale(0.98);
}

/* Favicon-like appearance for mobile */
@media (max-width: 768px) {
    .logo {
        font-size: 1.25rem;
        padding: 0.4rem 0.6rem;
    }
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

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

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

/* ==================== THEME TOGGLE BUTTON ==================== */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.theme-toggle svg {
    position: absolute;
    transition: all 0.3s ease;
}

.sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ==================== HERO SECTION STYLES ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 2rem;
    margin-top: 70px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    opacity: 0.1;
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: pulse 15s ease-in-out infinite;
}

.hero-content {
    text-align: center;
    z-index: 1;
    animation: fadeInUp 1s ease;
    max-width: 800px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 600;
}

.hero-description {
    font-size: clamp(1rem, 1.5vw, 1.1rem);
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-social-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.social-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 50%;
    color: var(--primary-color);
    transition: var(--transition);
    cursor: pointer;
}

.social-icon:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.social-icon svg {
    width: 24px;
    height: 24px;
}

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

/* ==================== BUTTON STYLES ==================== */
.btn {
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-secondary svg {
    transition: var(--transition);
}

.btn-secondary:hover svg {
    transform: translateY(2px);
}

/* ==================== SECTION STYLES ==================== */
.section {
    padding: var(--section-padding);
    position: relative;
}

.bg-light {
    background: var(--light-bg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    font-weight: 700;
    color: var(--text-dark);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

/* ==================== ABOUT SECTION STYLES ==================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.about-image {
    position: relative;
    animation: fadeInUp 0.8s ease-out;
}

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

.about-image img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid var(--white);
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
    transition: all 0.4s ease;
    background: var(--white);
}

.about-image img:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.5);
    border-color: var(--primary-color);
}

.about-image::before {
    content: '';
    position: absolute;
    inset: -15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    border-radius: 50%;
    z-index: -1;
    animation: rotate 10s linear infinite;
    opacity: 0.6;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.about-image .image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.about-image .image-placeholder:hover {
    transform: scale(1.02);
    box-shadow: var(--card-shadow-hover);
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.about-description {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1.05rem;
}

.skills {
    margin-top: 1.5rem;
}

.skills h3 {
    margin-bottom: 1rem;
    color: var(--text-dark);
    font-size: 1.3rem;
}

/* ==================== SKILLS FILTER NAVIGATION ==================== */
.skills-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(102, 126, 234, 0.1);
}

.skill-filter-btn {
    padding: 0.6rem 1.2rem;
    background: transparent;
    color: var(--text-light);
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.skill-filter-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.skill-filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    padding: 0.6rem 1.2rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: default;
    opacity: 1;
    transform: scale(1);
}

.skill-tag.hidden {
    display: none;
}

.skill-tag:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

/* ==================== EDUCATION TIMELINE STYLES ==================== */
/* ==================== EDUCATION SECTION STYLES - RESPONSIVE ==================== */
.education-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 50px;
}

.education-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    animation: fadeInLeft 0.6s ease;
}

.timeline-dot {
    position: absolute;
    left: -37px;
    top: 5px;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border: 4px solid var(--white);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2);
    transition: var(--transition);
    z-index: 1;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.2);
    background: var(--secondary-color);
}

.timeline-content {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateX(5px);
    box-shadow: var(--card-shadow-hover);
}

.timeline-content h3 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.institution {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.timeline-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.timeline-description {
    color: var(--text-light);
    line-height: 1.6;
}

/* ==================== EMPTY STATE STYLES ==================== */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-light);
    font-size: 1.1rem;
}

.empty-state p {
    margin: 0;
    opacity: 0.7;
}

/* ==================== EXPERIENCE SECTION STYLES ==================== */
.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.experience-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border-left: 4px solid transparent;
}

.experience-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
    border-left-color: var(--primary-color);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.experience-header h3 {
    color: var(--text-dark);
    font-size: 1.3rem;
}

.experience-duration {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 600;
    background: rgba(102, 126, 234, 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
}

.experience-company {
    color: var(--text-light);
    font-weight: 600;
    margin-bottom: 1rem;
}

.experience-list {
    padding-left: 0;
}

.experience-list li {
    color: var(--text-light);
    margin-bottom: 0.6rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.experience-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

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

.project-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.project-image .image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.project-description {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-tools {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.tool-card {
    background: rgba(102, 126, 234, 0.08);
    border: 2px solid rgba(102, 126, 234, 0.15);
    border-radius: 12px;
    padding: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    cursor: default;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.2), transparent);
    transition: left 0.5s ease;
}

.tool-card:hover::before {
    left: 100%;
}

.tool-card:hover {
    background: rgba(102, 126, 234, 0.15);
    border-color: var(--primary-color);
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.25);
}

.tool-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
    text-align: center;
    transition: var(--transition);
}

.tool-card:hover .tool-name {
    color: var(--primary-color);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.project-tags span {
    padding: 0.4rem 0.9rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: default;
    position: relative;
    overflow: hidden;
}

.project-tags span::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.3), transparent);
    transition: left 0.5s ease;
}

.project-tags span:hover::before {
    left: 100%;
}

.project-tags span:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

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

.project-link {
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
    position: relative;
}

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

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

.project-link:hover::after {
    width: 100%;
}

/* ==================== ACHIEVEMENTS SECTION STYLES ==================== */
/* ==================== ACHIEVEMENTS SECTION - 2025 MODERN DESIGN ==================== */

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    position: relative;
}

/* Featured Achievement - First Card Gets Special Treatment */
.achievement-card:first-child {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    border: 2px solid rgba(102, 126, 234, 0.15);
    position: relative;
    overflow: hidden;
}

.achievement-card:first-child::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: pulseGlow 8s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.3; }
}

.achievement-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px; /* More modern radius */
    text-align: left; /* LEFT ALIGN for better readability */
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); /* Smoother easing */
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border: 1px solid transparent;
}

/* Glassmorphism effect on hover */
.achievement-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(118, 75, 162, 0.03) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.achievement-card:hover {
    transform: translateY(-8px) scale(1.02); /* Subtle scale */
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.2);
}

.achievement-card:hover::after {
    opacity: 1;
}

/* Achievement Header - Icon + Category Badge */
.achievement-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    position: relative;
    z-index: 1;
}

.achievement-icon {
    font-size: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 20px;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55); /* Bounce effect */
    position: relative;
    flex-shrink: 0;
}

/* Icon background pulse */
.achievement-icon::before {
    content: '';
    position: absolute;
    inset: -5px;
    background: inherit;
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.achievement-card:hover .achievement-icon {
    transform: scale(1.1) rotate(-5deg);
}

.achievement-card:hover .achievement-icon::before {
    opacity: 0.5;
    animation: iconPulse 1.5s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.2); opacity: 0; }
}

/* Date Badge - Top Right */
.achievement-date {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    white-space: nowrap;
    position: relative;
    z-index: 1;
}

/* Achievement Content */
.achievement-content {
    position: relative;
    z-index: 1;
}

.achievement-card h3 {
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-size: 1.5rem; /* LARGER for better hierarchy */
    font-weight: 700; /* BOLDER */
    line-height: 1.3;
    letter-spacing: -0.5px;
}

.achievement-card:first-child h3 {
    font-size: 1.75rem; /* Even larger for featured */
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.achievement-card p {
    color: var(--text-light);
    line-height: 1.7; /* Better readability */
    font-size: 0.95rem;
    text-align: left; /* LEFT ALIGN - fixes readability */
    margin: 0;
}

/* Category Tag */
.achievement-category {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.9rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 0.5rem;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

/* Verification Badge */
.achievement-verified {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: #10b981;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 0.75rem;
}

.achievement-verified::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: #10b981;
    color: white;
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: bold;
}

/* ==================== BLOG SECTION STYLES ==================== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.blog-image .image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
}

.blog-content {
    padding: 1.5rem;
}

.blog-date {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 600;
}

.blog-content h3 {
    color: var(--text-dark);
    margin: 0.8rem 0;
    font-size: 1.2rem;
    line-height: 1.4;
}

.blog-excerpt {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.blog-read-more {
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.blog-read-more:hover {
    color: var(--secondary-color);
    transform: translateX(5px);
}

/* ==================== CONTACT SECTION STYLES ==================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.contact-info > p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.contact-details {
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    border-radius: 10px;
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--light-bg);
}

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

.contact-item h4 {
    color: var(--text-dark);
    margin-bottom: 0.3rem;
    font-size: 1rem;
}

.contact-item p {
    color: var(--text-light);
}

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

.social-link {
    padding: 0.7rem 1.3rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: 25px;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.social-link svg {
    flex-shrink: 0;
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.social-link:hover svg {
    transform: scale(1.1);
}

/* ==================== CONTACT FORM STYLES ==================== */
.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

/* ==================== FOOTER STYLES ==================== */
.footer {
    background: var(--dark-bg);
    color: var(--white);
    text-align: center;
    padding: 2rem;
}

.footer p {
    margin: 0.5rem 0;
    opacity: 0.9;
}

/* ==================== BACK TO TOP BUTTON STYLES ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.6);
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.15;
    }
}

/* ==================== RESPONSIVE STYLES ==================== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.1);
        padding: 2rem 0;
        gap: 0;
        z-index: 999;
    }

    .nav-menu li {
        width: 100%;
        padding: 1rem 0;
        border-bottom: 1px solid var(--light-bg);
    }

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

    .hamburger {
        display: flex;
    }

    .nav-right {
        gap: 0.5rem;
    }

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

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

    .projects-grid,
    .achievements-grid,
    .blog-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

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

@media (max-width: 768px) {
    :root {
        --section-padding: 3rem 1.5rem;
    }

    .hero {
        margin-top: 60px;
    }

    /* Education Timeline - Tablet Adjustments */
    .education-timeline {
        padding-left: 35px;
    }

    .education-timeline::before {
        left: 15px;
        width: 2px;
    }

    .timeline-dot {
        left: -26px;
        width: 16px;
        height: 16px;
        border-width: 3px;
    }

    .timeline-content {
        padding: 1.25rem;
    }

    .timeline-content h3 {
        font-size: 1.1rem;
    }

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

    .skills-nav {
        gap: 0.5rem;
    }

    .skill-filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    /* Achievement Cards - Mobile Optimizations */
    .achievements-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .achievement-card:first-child {
        grid-column: span 1;
    }

    .achievement-card {
        padding: 1.5rem;
    }

    .achievement-icon {
        font-size: 2.5rem;
        width: 65px;
        height: 65px;
    }

    .achievement-card h3 {
        font-size: 1.25rem;
    }

    .achievement-card:first-child h3 {
        font-size: 1.4rem;
    }

    .achievement-header {
        flex-wrap: wrap;
    }

    .achievement-date {
        padding: 0.35rem 0.8rem;
        font-size: 0.7rem;
    }
}

@media (max-width: 600px) {
    :root {
        --section-padding: 2.5rem 1rem;
    }

    .nav-container {
        padding: 0.8rem 1rem;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
    }

    .theme-toggle svg {
        width: 18px;
        height: 18px;
    }

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

    .btn {
        width: 100%;
        text-align: center;
    }

    .hero-social-links {
        gap: 0.8rem;
    }

    .social-icon {
        width: 40px;
        height: 40px;
    }

    .social-icon svg {
        width: 20px;
        height: 20px;
    }

    /* Education Timeline - Mobile Optimizations */
    .education-timeline {
        padding-left: 25px;
        padding-right: 0;
    }

    .education-timeline::before {
        left: 10px;
        width: 2px;
    }

    .timeline-item {
        margin-bottom: 2rem;
    }

    .timeline-dot {
        left: -18px;
        width: 12px;
        height: 12px;
        border-width: 3px;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
    }

    .timeline-content {
        padding: 1rem;
    }

    .timeline-content:hover {
        transform: translateX(0);
    }

    .timeline-content h3 {
        font-size: 1rem;
    }

    .institution {
        font-size: 0.9rem;
    }

    .timeline-date {
        font-size: 0.85rem;
    }

    .timeline-description {
        font-size: 0.9rem;
    }

    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    /* Extra small screens - Further optimization */
    .education-timeline {
        padding-left: 20px;
    }

    .education-timeline::before {
        left: 8px;
    }

    .timeline-dot {
        left: -14px;
        width: 10px;
        height: 10px;
        border-width: 2px;
    }

    .timeline-content {
        padding: 0.875rem;
        border-radius: 12px;
    }

    .timeline-item {
        margin-bottom: 1.5rem;
    }
}

/* ==================== UTILITIES ==================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== PROJECT MODAL ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10000;
    animation: fadeIn 0.3s ease;
    overflow-y: auto;
    padding: 2rem;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius);
    max-width: 900px;
    width: 100%;
    position: relative;
    animation: slideUp 0.4s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(102, 126, 234, 0.1);
    color: var(--text-dark);
    font-size: 1.8rem;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.modal-close:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: rotate(90deg);
}

.modal-body {
    padding: 2rem;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-image {
    margin-bottom: 2rem;
}

.modal-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    display: block;
}

.modal-image .image-placeholder {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
}

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

.modal-title {
    font-size: 2rem;
    color: var(--text-dark);
    margin: 0;
}

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

.modal-tags span {
    padding: 0.4rem 0.9rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: default;
    position: relative;
    overflow: hidden;
}

.modal-tags span::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.3), transparent);
    transition: left 0.5s ease;
}

.modal-tags span:hover::before {
    left: 100%;
}

.modal-tags span:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.modal-description {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1.05rem;
}

.modal-features h3,
.modal-tech h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.modal-features-list {
    list-style: none;
    padding: 0;
}

.modal-features-list li {
    color: var(--text-light);
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    position: relative;
    line-height: 1.6;
}

.modal-features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.modal-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.modal-tech-list span {
    padding: 0.6rem 1.2rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: default;
    position: relative;
    overflow: hidden;
}

.modal-tech-list span::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.3), transparent);
    transition: left 0.5s ease;
}

.modal-tech-list span:hover::before {
    left: 100%;
}

.modal-tech-list span:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.modal-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    padding-top: 1rem;
    border-top: 2px solid var(--light-bg);
}

[data-theme="dark"] .modal {
    background: rgba(0, 0, 0, 0.9);
}

[data-theme="dark"] .modal-content {
    background: #2d3748;
}

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

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .modal {
        padding: 1rem;
    }

    .modal-body {
        padding: 1.5rem;
    }

    .modal-title {
        font-size: 1.5rem;
    }

    .modal-image .image-placeholder {
        height: 200px;
    }

    .modal-links {
        flex-direction: column;
    }

    .modal-links .btn {
        width: 100%;
        text-align: center;
    }
}