/* ==================== CSS VARIABLES ==================== */
:root {
    /* Colors - Easy to change theme */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: rgba(22, 27, 34, 0.8);
    --bg-glass: rgba(22, 27, 34, 0.6);
    
    --accent-primary: #7c3aed;
    --accent-secondary: #8b5cf6;
    --accent-glow: rgba(124, 58, 237, 0.4);
    --accent-light: rgba(139, 92, 246, 0.1);
    
    --text-primary: #ffffff;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    
    --border-color: rgba(139, 92, 246, 0.2);
    --border-hover: rgba(139, 92, 246, 0.5);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50%;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

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

ul {
    list-style: none;
}

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

/* ==================== UTILITY CLASSES ==================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Glass Card Style */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-medium);
}

.glass-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 8px 32px var(--accent-glow);
    transform: translateY(-5px);
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-medium);
    border: none;
    font-family: var(--font-family);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--text-primary);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-outline:hover {
    background: var(--accent-primary);
    color: var(--text-primary);
}

.btn-project {
    background: transparent;
    color: var(--accent-secondary);
    padding: 10px 0;
    font-weight: 500;
}

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

.btn-project i {
    transition: transform var(--transition-fast);
}

.btn-project:hover i {
    transform: translateX(5px);
}

.btn-certificate {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--text-primary);
    padding: 10px 20px;
    font-size: 0.85rem;
    margin-top: 15px;
}

.btn-certificate:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* ==================== NAVBAR ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-medium);
}

.navbar.scrolled {
    background: rgba(13, 17, 23, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-circle {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
    transition: transform var(--transition-medium);
}

.logo:hover .logo-circle {
    transform: scale(1.1);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

.hire-btn {
    padding: 10px 20px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.hero-content {
    animation: fadeInUp 1s ease forwards;
}

.hero-tag {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent-secondary);
    letter-spacing: 3px;
    margin-bottom: 15px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--accent-secondary);
    margin-bottom: 20px;
    min-height: 40px;
}

.typewriter {
    color: var(--accent-secondary);
}

.cursor {
    display: inline-block;
    animation: blink 1s infinite;
    color: var(--accent-secondary);
}

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

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: all var(--transition-medium);
}

.social-icon:hover {
    border-color: var(--accent-primary);
    color: var(--accent-secondary);
    background: var(--accent-light);
    transform: translateY(-3px);
}

/* Hero Visual - Profile */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.profile-wrapper {
    position: relative;
    z-index: 2;
}

.profile-glow {
    position: absolute;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
    border-radius: var(--radius-full);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.5;
    filter: blur(60px);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.7; }
}

.profile-circle {
    width: 300px;
    height: 300px;
    border-radius: var(--radius-full);
    border: 3px solid var(--accent-primary);
    overflow: hidden;
    position: relative;
    background: var(--bg-secondary);
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Floating Stat Cards - REMOVED */

/* Hero Background */
.hero-bg-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse, var(--accent-primary) 0%, transparent 60%);
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 25px;
}

.about-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.9;
}

.education-card {
    padding: 40px;
    text-align: center;
}

.education-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: var(--text-primary);
}

.education-degree {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.education-college {
    font-size: 1rem;
    color: var(--accent-secondary);
    margin-bottom: 5px;
}

.education-year {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ==================== EXPERIENCE SECTION ==================== */
.experience-section {
    margin-top: 60px;
}

.experience-heading {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.experience-heading i {
    color: var(--accent-secondary);
}

.experience-card {
    padding: 30px;
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.experience-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.experience-company {
    font-size: 1rem;
    color: var(--accent-secondary);
}

.experience-date {
    background: var(--accent-light);
    color: var(--accent-secondary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.experience-list {
    list-style: none;
    padding: 0;
}

.experience-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 12px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.experience-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-secondary);
    font-size: 1rem;
}

/* ==================== PROJECTS SECTION ==================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.project-card {
    padding: 35px;
    display: flex;
    flex-direction: column;
}

.project-icon {
    width: 60px;
    height: 60px;
    background: var(--accent-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--accent-secondary);
}

.project-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.project-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.tag {
    background: var(--accent-light);
    color: var(--accent-secondary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.skill-card {
    padding: 35px;
    text-align: center;
}

.skill-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.skill-category {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.skill-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 15px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.skill-badge:hover {
    border-color: var(--accent-primary);
    color: var(--accent-secondary);
}

.skill-badge.pill {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    color: var(--text-primary);
    border-radius: 25px;
}

/* ==================== CERTIFICATES SECTION ==================== */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.certificate-card {
    padding: 30px;
    text-align: center;
}

.certificate-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.3rem;
    color: var(--text-primary);
}

.certificate-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.certificate-issuer {
    font-size: 0.9rem;
    color: var(--accent-secondary);
    margin-bottom: 5px;
}

.certificate-date {
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.contact-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 30px;
    align-items: start;
    margin-bottom: 35px;
}

.contact-form {
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    max-width: 720px;
}

.contact-details {
    padding: 24px;
    width: 100%;
}

.contact-details-title {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    transition: all var(--transition-medium);
    margin-bottom: 10px;
}

.contact-detail-item:hover {
    border-color: var(--border-hover);
    background: var(--accent-light);
    transform: translateX(4px);
}

.contact-detail-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(13, 17, 23, 0.7);
    color: var(--accent-secondary);
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-detail-text {
    display: flex;
    flex-direction: column;
}

.contact-detail-text strong {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.2;
}

.contact-detail-text small {
    color: var(--text-secondary);
    font-size: 0.82rem;
    word-break: break-word;
}

.contact-form-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
}

.contact-form-subtitle {
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.contact-form label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    background: rgba(13, 17, 23, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    font-family: var(--font-family);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

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

.contact-form .btn {
    margin-top: 6px;
    width: fit-content;
}

.contact-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.contact-note i {
    color: var(--accent-secondary);
    margin-right: 5px;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--bg-primary);
    padding: 40px 0;
    text-align: center;
    position: relative;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-text .heart {
    color: #ef4444;
    animation: heartbeat 1.5s ease infinite;
}

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

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.2rem;
    box-shadow: 0 4px 20px var(--accent-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-medium);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 30px var(--accent-glow);
}

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

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-visual {
        order: 1;
        min-height: 400px;
    }
    
    .hero-description {
        margin: 0 auto 30px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-content .section-title {
        text-align: center;
    }
    
    .about-text {
        text-align: center;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        gap: 30px;
        transition: right var(--transition-medium);
        z-index: 998;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .hire-btn {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
        z-index: 999;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .profile-circle {
        width: 220px;
        height: 220px;
    }
    
    .profile-glow {
        width: 260px;
        height: 260px;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .profile-circle {
        width: 180px;
        height: 180px;
    }
    
    .contact-layout {
        gap: 20px;
    }
    
    .project-card,
    .skill-card,
    .certificate-card,
    .education-card {
        padding: 25px;
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}