/* ===== VARIABLES ===== */
:root {
    /* Colors */
    --primary-color: #6c63ff;
    --primary-dark: #5a52e0;
    --secondary-color: #ff6584;
    --accent-color: #43cea2;
    --text-color: #333;
    --text-light: #666;
    --text-lighter: #999;
    --bg-color: #fff;
    --bg-light: #f8f9fa;
    --bg-dark: #0a1128;
    --bg-gradient: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    
    /* Shadows */
    --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-main: 'Poppins', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 2rem;
    --border-radius-full: 9999px;
    
    /* Transitions */
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    --transition-fast: all 0.2s ease;
    
    /* Dark mode colors */
    --dark-bg: #121212;
    --dark-surface: #1e1e1e;
    --dark-text: #f1f1f1;
    --dark-text-light: #b0b0b0;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

body.dark-mode {
    --text-color: var(--dark-text);
    --text-light: var(--dark-text-light);
    --bg-color: var(--dark-bg);
    --bg-light: var(--dark-surface);
}

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

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

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

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

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

ul {
    list-style: none;
}

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    outline: none;
    border: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

section:nth-child(even) {
    background-color: var(--bg-light);
}

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

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

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

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

.bg-dark {
    background-color: var(--bg-dark);
    color: #fff;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: var(--transition-normal);
    z-index: -1;
}

.btn:hover::after {
    transform: translateX(0);
}

.btn i {
    margin-left: var(--spacing-sm);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ===== PRELOADER ===== */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loader {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.loader .circle {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color: var(--primary-color);
    animation: loader 1s infinite alternate;
}

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

.loader .circle:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes loader {
    0% {
        opacity: 0.3;
        transform: translateY(0);
    }
    100% {
        opacity: 1;
        transform: translateY(-10px);
    }
}

/* ===== CUSTOM CURSOR ===== */
.cursor {
    position: fixed;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--primary-color);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.2s, height 0.2s;
    opacity: 0;
}

.cursor-follower {
    position: fixed;
    width: 30px;
    height: 30px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: 0.1s ease;
    opacity: 0;
}

/* ===== HEADER & NAVIGATION ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.dark-mode header {
    background-color: rgba(18, 18, 18, 0.95);
}

header.scrolled {
    box-shadow: var(--shadow-md);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    height: 80px;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--text-color);
    position: relative;
    display: flex;
    align-items: center;
}

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

.logo-dot {
    width: 8px;
    height: 8px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    display: inline-block;
    margin-left: 5px;
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-links a {
    color: var(--text-color);
    font-weight: 600;
    position: relative;
    padding: var(--spacing-xs) 0;
}

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

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

.theme-toggle {
    cursor: pointer;
    font-size: var(--font-size-lg);
    margin-left: var(--spacing-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-full);
    background-color: var(--bg-light);
    transition: var(--transition-normal);
}

.dark-mode .theme-toggle {
    background-color: var(--dark-surface);
}

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

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--text-color);
    transition: var(--transition-normal);
}

/* ===== SECTION HEADERS ===== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    position: relative;
}

.section-subtitle {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding: 0 var(--spacing-md);
}

.section-subtitle::before,
.section-subtitle::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 2px;
    background-color: var(--primary-color);
}

.section-subtitle::before {
    left: -20px;
}

.section-subtitle::after {
    right: -20px;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
}

/* ===== HERO SECTION ===== */
#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero-greeting {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.hero-content h1 {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

.hero-content h1 span {
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.hero-content h1 span::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 10px;
    background-color: rgba(108, 99, 255, 0.2);
    z-index: -1;
}

.hero-title {
    height: 60px;
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.hero-title-wrapper {
    animation: slide 8s ease infinite;
}

.hero-title-item {
    height: 60px;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
}

@keyframes slide {
    0%, 25% {
        transform: translateY(0);
    }
    30%, 50% {
        transform: translateY(-60px);
    }
    55%, 75% {
        transform: translateY(-120px);
    }
    80%, 100% {
        transform: translateY(-180px);
    }
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
}

.hero-btns {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero-scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--text-light);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 10px;
    margin-bottom: var(--spacing-sm);
}

.wheel {
    width: 4px;
    height: 8px;
    background-color: var(--text-light);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(15px);
        opacity: 0;
    }
}

.scroll-text {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-shapes {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-shape {
    position: absolute;
    border-radius: var(--border-radius-full);
}

.hero-shape-1 {
    top: 20%;
    right: 5%;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    animation: float 6s ease-in-out infinite;
}

.hero-shape-2 {
    top: 60%;
    right: 10%;
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    animation: float 8s ease-in-out infinite;
}

.hero-shape-3 {
    top: 30%;
    right: 30%;
    width: 60px;
    height: 60px;
    background: var(--secondary-color);
    animation: float 5s ease-in-out infinite;
}

.hero-shape-4 {
    top: 70%;
    right: 35%;
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    animation: float 7s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ===== ABOUT SECTION ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-image-wrapper {
    position: relative;
    padding-bottom: var(--spacing-xl);
    padding-right: var(--spacing-xl);
}

.about-image-wrapper img {
    width: 100%;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
}

.about-image-wrapper:hover img {
    transform: scale(1.02);
}

.experience-badge {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 120px;
    height: 120px;
    background-color: var(--primary-color);
    border-radius: var(--border-radius-full);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    box-shadow: var(--shadow-md);
}

.experience-years {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    line-height: 1;
}

.experience-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-align: center;
}

.about-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.about-shape {
    position: absolute;
    border-radius: var(--border-radius-full);
}

.about-shape-1 {
    top: -20px;
    left: -20px;
    width: 40px;
    height: 40px;
    background-color: var(--accent-color);
    animation: float 6s ease-in-out infinite;
}

.about-shape-2 {
    bottom: 30px;
    left: -30px;
    width: 60px;
    height: 60px;
    background-color: var(--secondary-color);
    animation: float 8s ease-in-out infinite;
}

.about-text h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

.about-text p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

.about-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.info-col {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.info-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(108, 99, 255, 0.1);
    border-radius: var(--border-radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-color);
    font-size: var(--font-size-md);
    flex-shrink: 0;
}

.info-text {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 2px;
}

.info-value {
    color: var(--text-light);
}

.about-cta {
    margin-top: var(--spacing-xl);
}

/* ===== EXPERIENCE SECTION ===== */
.experience-timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding-left: 40px;
}

.experience-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-3xl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -18px;
    top: 0;
    width: 40px;
    height: 40px;
    background-color: white;
    border: 4px solid var(--primary-color);
    border-radius: var(--border-radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

.timeline-dot::before {
    content: '';
    width: 12px;
    height: 12px;
    background-color: var(--primary-color);
    border-radius: var(--border-radius-full);
}

.timeline-content {
    background-color: var(--bg-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

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

.timeline-header {
    margin-bottom: var(--spacing-md);
}

.timeline-date {
    display: inline-block;
    padding: 5px 10px;
    background-color: rgba(108, 99, 255, 0.1);
    color: var(--primary-color);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.timeline-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-light);
    font-style: italic;
}

.timeline-company i {
    color: var(--primary-color);
}

.timeline-body {
    color: var(--text-light);
}

.timeline-body ul {
    margin-bottom: var(--spacing-md);
}

.timeline-body li {
    padding-left: var(--spacing-md);
    position: relative;
    margin-bottom: var(--spacing-xs);
}

.timeline-body li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background-color: var(--primary-color);
    border-radius: var(--border-radius-full);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.timeline-tags span {
    padding: 5px 10px;
    background-color: rgba(108, 99, 255, 0.1);
    color: var(--primary-color);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* ===== EDUCATION SECTION ===== */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.education-card {
    background-color: var(--bg-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--bg-gradient);
}

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

.education-year {
    display: inline-block;
    padding: 5px 10px;
    background-color: rgba(108, 99, 255, 0.1);
    color: var(--primary-color);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.education-degree {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.education-school {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-light);
}

.education-school i {
    color: var(--primary-color);
}

/* ===== SKILLS SECTION ===== */
.skills-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

.skills-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.skills-tab {
    padding: 10px 20px;
    border-radius: var(--border-radius-md);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.skills-tab.active, .skills-tab:hover {
    background-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.skills-panel {
    display: none;
}

.skills-panel.active {
    display: block;
    animation: fadeIn 0.5s forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.skill-item {
    background-color: var(--bg-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    text-align: center;
}

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

.skill-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(108, 99, 255, 0.1);
    border-radius: var(--border-radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    margin: 0 auto var(--spacing-md);
}

.skill-name {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.skill-progress {
    width: 100%;
    height: 6px;
    background-color: rgba(108, 99, 255, 0.1);
    border-radius: var(--border-radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--bg-gradient);
    border-radius: var(--border-radius-full);
    transition: width 1.5s ease;
}

/* ===== LANGUAGES SECTION ===== */
.languages-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    max-width: 900px;
    margin: 0 auto;
}

.language-card {
    background-color: var(--bg-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    width: 280px;
}

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

.language-flag {
    width: 50px;
    height: 50px;
    overflow: hidden;
    border-radius: var(--border-radius-full);
    flex-shrink: 0;
}

.language-flag img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.language-info {
    flex-grow: 1;
}

.language-info h3 {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-xs);
}

.language-level {
    width: 100%;
    height: 6px;
    background-color: rgba(108, 99, 255, 0.1);
    border-radius: var(--border-radius-full);
    overflow: hidden;
    margin-bottom: 5px;
}

.language-progress {
    height: 100%;
    background: var(--bg-gradient);
    border-radius: var(--border-radius-full);
}

.language-text {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    display: block;
    text-align: right;
}

/* ===== PROJECTS SECTION ===== */
.projects-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 15px;
    background-color: var(--bg-color);
    border-radius: var(--border-radius-md);
    color: var(--text-color);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

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

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

.project-img {
    height: 220px;
    overflow: hidden;
}

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

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

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

.project-category {
    display: inline-block;
    padding: 5px 10px;
    background-color: rgba(108, 99, 255, 0.1);
    color: var(--primary-color);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.project-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.project-description {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

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

.project-tags span {
    padding: 4px 8px;
    background-color: var(--bg-light);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

.project-links {
    display: flex;
    justify-content: flex-end;
}

.project-link {
    width: 40px;
    height: 40px;
    background-color: var(--bg-light);
    border-radius: var(--border-radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    transition: var(--transition-normal);
}

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

/* ===== INTERESTS SECTION ===== */
.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.interest-card {
    background-color: var(--bg-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

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

.interest-card:hover .interest-icon {
    background-color: white;
    color: var(--primary-color);
    transform: rotateY(360deg);
}

.interest-card:hover .interest-title {
    color: white;
}

.interest-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(108, 99, 255, 0.1);
    border-radius: var(--border-radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto var(--spacing-md);
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    transition: var(--transition-slow);
}

.interest-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    transition: var(--transition-normal);
}

/* ===== CONTACT SECTION ===== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(108, 99, 255, 0.1);
    border-radius: var(--border-radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    flex-shrink: 0;
    transition: var(--transition-normal);
}

.contact-item:hover .contact-icon {
    background-color: var(--primary-color);
    color: white;
    transform: rotateY(360deg);
}

.contact-text {
    flex-grow: 1;
}

.contact-text h3 {
    font-size: var(--font-size-lg);
    margin-bottom: 5px;
}

.contact-text p, .contact-text a {
    color: var(--text-light);
    transition: var(--transition-normal);
}

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

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

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

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

.social-link {
    width: 45px;
    height: 45px;
    background-color: var(--bg-light);
    border-radius: var(--border-radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    font-size: var(--font-size-md);
    transition: var(--transition-normal);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-5px);
}

.contact-form-wrapper {
    background-color: var(--bg-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

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

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

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--bg-light);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-light);
    color: var(--text-color);
    font-size: var(--font-size-md);
    transition: var(--transition-normal);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.1);
}

.form-control:focus + label, 
.form-control:not(:placeholder-shown) + label {
    top: -10px;
    left: 10px;
    font-size: var(--font-size-sm);
    padding: 0 5px;
    background-color: var(--bg-color);
}

.form-group label {
    position: absolute;
    top: 50%;
    left: var(--spacing-md);
    transform: translateY(-50%);
    color: var(--text-light);
    pointer-events: none;
    transition: var(--transition-normal);
}

.form-group textarea + label {
    top: 20px;
}

.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -10px;
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.contact-form .btn {
    align-self: flex-start;
    margin-top: var(--spacing-sm);
}

/* ===== FOOTER ===== */
footer {
    background-color: var(--bg-dark);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-logo {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
}

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

.footer-text {
    max-width: 600px;
    margin-bottom: var(--spacing-xl);
    color: var(--text-lighter);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer-link {
    color: var(--text-lighter);
    transition: var(--transition-normal);
    position: relative;
}

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

.footer-link:hover {
    color: white;
}

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

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    color: var(--text-lighter);
    font-size: var(--font-size-sm);
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--border-radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 99;
}

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

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ===== RESPONSIVE STYLES ===== */
@media screen and (max-width: 1024px) {
    :root {
        --font-size-5xl: 2.5rem;
    }
    
    .about-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .about-image-wrapper {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .about-info {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 768px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.25rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--bg-color);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-xl);
        transition: var(--transition-normal);
        z-index: 99;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero-btns {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media screen and (max-width: 576px) {
    :root {
        --spacing-3xl: 3rem;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-content h1 {
        font-size: var(--font-size-3xl);
    }
    
    .experience-timeline {
        padding-left: 30px;
    }
    
    .timeline-dot {
        width: 30px;
        height: 30px;
        left: -13px;
    }
    
    .skills-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .languages-container {
        flex-direction: column;
        align-items: center;
    }
    
    .language-card {
        width: 100%;
    }
    
    .projects-filter {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 100%;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}