/* ===================================
   GLOBAL STYLES & VARIABLES
   =================================== */

:root {
    /* Colors */
    --color-primary: #00d4ff;
    --color-secondary: #64ffda;
    --color-accent: #0099ff;
    --color-bg-dark: #0a192f;
    --color-bg-darker: #020c1b;
    --color-bg-card: #112240;
    --color-bg-card-hover: #1a2f4d;
    --color-text-primary: #ffffff;
    --color-text-secondary: #8892b0;
    --color-text-muted: #

6b778d;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #64ffda 100%);
    --gradient-bg: linear-gradient(135deg, #0a192f 0%, #112240 100%);
    --gradient-card: linear-gradient(145deg, #112240 0%, #0a192f 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 10px rgba(0, 212, 255, 0.1);
    --shadow-md: 0 5px 20px rgba(0, 212, 255, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 212, 255, 0.2);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);

    /* Border Radius */
    --radius-sm: 5px;
    --radius-md: 10px;
    --radius-lg: 15px;
    --radius-xl: 20px;
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

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

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

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

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

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

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ===================================
   UTILITY CLASSES
   =================================== */

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

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

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

.section-tag {
    display: inline-block;
    color: var(--color-primary);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: -1;
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-bg-dark);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

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

/* ===================================
   NAVIGATION
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    background: transparent;
    transition: var(--transition-normal);
    z-index: 1000;
}

.navbar.scrolled {
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-text-primary);
}

.logo-dot {
    color: var(--color-primary);
    font-size: 2rem;
}

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

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

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

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

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

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

.hamburger .bar {
    width: 25px;
    height: 3px;
    background: var(--color-primary);
    transition: var(--transition-normal);
    border-radius: 3px;
}

/* ===================================
   HERO SECTION
   =================================== */

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

#particles-js {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 800px;
}

.hero-greeting {
    color: var(--color-primary);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.hero-name {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.typed-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cursor {
    display: inline-block;
    width: 3px;
    background: var(--color-primary);
    animation: blink 0.7s infinite;
}

.hero-tagline {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-socials {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    font-size: 1.2rem;
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--color-primary);
    color: var(--color-bg-dark);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

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

.mouse::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

/* ===================================
   ABOUT SECTION
   =================================== */

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto;
}

.image-border {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--color-primary);
    border-radius: var(--radius-lg);
    z-index: 1;
}

.profile-img {
    position: relative;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
    z-index: 2;
    transition: var(--transition-normal);
}

.image-wrapper:hover .profile-img {
    transform: translate(-10px, -10px);
}

.about-subtitle {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

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

.about-description strong {
    color: var(--color-primary);
}

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

.achievement-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    transition: var(--transition-normal);
}

.achievement-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.achievement-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.achievement-label {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

/* ===================================
   SKILLS SECTION
   =================================== */

.skills-section {
    background: var(--color-bg-darker);
}

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

.skill-category {
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(100, 255, 218, 0.1);
}

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

.category-header i {
    font-size: 2rem;
    color: var(--color-primary);
}

.category-header h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.skill-card {
    background: var(--gradient-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    transition: var(--transition-normal);
    transform-style: preserve-3d;
}

.skill-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.skill-card i {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.skill-card h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: var(--color-bg-darker);
    border-radius: 10px;
    overflow: hidden;
    margin-top: var(--spacing-sm);
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 10px;
    width: 0;
    transition: width 1s ease;
}

/* ===================================
   EXPERIENCE SECTION
   =================================== */

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-md) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--color-primary);
    opacity: 0.3;
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.timeline-item:nth-child(even) .timeline-date {
    grid-column: 3;
    text-align: left;
}

.timeline-item:nth-child(even) .timeline-content {
    grid-column: 1;
}

.timeline-item:nth-child(odd) .timeline-date {
    grid-column: 1;
    text-align: right;
}

.timeline-item:nth-child(odd) .timeline-content {
    grid-column: 3;
}

.timeline-dot {
    grid-column: 2;
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 5px var(--color-bg-dark), 0 0 0 8px var(--color-primary);
    position: relative;
    z-index: 2;
}

.timeline-date {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 1.1rem;
    align-self: center;
}

.timeline-card {
    background: var(--color-bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    transition: var(--transition-normal);
}

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

.timeline-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.timeline-card h4 {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.timeline-achievements {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.timeline-achievements li {
    color: var(--color-text-secondary);
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-sm);
}

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

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tech-tag {
    padding: 0.3rem 0.8rem;
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

/* ===================================
   PROJECTS SECTION
   =================================== */

.projects-section {
    background: var(--color-bg-darker);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    perspective: 1000px;
    height: 400px;
}

.project-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.project-card:hover .project-inner {
    transform: rotateY(180deg);
}

.project-front,
.project-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.project-front {
    background: var(--gradient-card);
    border: 2px solid rgba(100, 255, 218, 0.2);
    align-items: center;
    text-align: center;
}

.project-back {
    background: var(--color-bg-card);
    border: 2px solid var(--color-primary);
    transform: rotateY(180deg);
}

.project-image {
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    border-radius: 50%;
    background: var(--gradient-primary);
}

.project-image i {
    font-size: 4rem;
    color: var(--color-bg-dark);
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

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

.project-description {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.project-metrics {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.project-metrics span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

/* ===================================
   EDUCATION SECTION
   =================================== */

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

.education-card {
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    transition: var(--transition-normal);
    text-align: center;
}

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

.edu-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
}

.edu-icon i {
    font-size: 2.5rem;
    color: var(--color-bg-dark);
}

.education-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.education-card h4 {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.edu-institution {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-xs);
}

.edu-year {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.edu-description {
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* ===================================
   CONTACT SECTION
   =================================== */

.contact-section {
    background: var(--color-bg-darker);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.contact-info > p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

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

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

.contact-item i {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--color-bg-dark);
    border-radius: var(--radius-md);
    font-size: 1.3rem;
}

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

.contact-item a,
.contact-item p {
    color: var(--color-text-primary);
    font-weight: 500;
}

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

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

.contact-form {
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid rgba(100, 255, 218, 0.1);
}

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

.form-input {
    width: 100%;
    padding: 1rem;
    background: var(--color-bg-darker);
    border: 2px solid rgba(100, 255, 218, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-normal);
}

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

.form-input:not(:placeholder-shown) + .form-label,
.form-input:focus + .form-label {
    top: -10px;
    left: 10px;
    font-size: 0.85rem;
    color: var(--color-primary);
    background: var(--color-bg-card);
    padding: 0 0.5rem;
}

.form-label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: var(--color-text-muted);
    transition: var(--transition-normal);
    pointer-events: none;
}

.form-error {
    display: block;
    color: #ff6b6b;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.btn-submit {
    width: 100%;
    position: relative;
}

.btn-loading {
    display: none;
}

.btn-submit.loading .btn-text {
    opacity: 0;
}

.btn-submit.loading .btn-loading {
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(0, 212, 137, 0.1);
    border: 2px solid #00d489;
    color: #00d489;
}

.form-status.error {
    display: block;
    background: rgba(255, 107, 107, 0.1);
    border: 2px solid #ff6b6b;
    color: #ff6b6b;
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    padding: var(--spacing-lg) 0;
    background: var(--color-bg-darker);
    border-top: 1px solid rgba(100, 255, 218, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.heart {
    color: #ff6b6b;
    animation: heartbeat 1.5s infinite;
}

.back-to-top {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--color-bg-dark);
    border-radius: 50%;
    font-size: 1.2rem;
    transition: var(--transition-normal);
    opacity: 0;
    visibility: hidden;
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}