/* Modern Portfolio CSS for Kanish U */

/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f59e0b;
    --accent-color: #06b6d4;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-large: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

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

.logo-text {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 2px;
}

.bar {
    width: 25px;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    border-radius: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 0 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    position: relative;
    overflow: hidden;
    z-index: 2;
    margin-bottom: 0;
}

/* Background Animation */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    opacity: 0.1;
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="%236366f1" opacity="0.3"><animate attributeName="cy" values="20;80;20" dur="4s" repeatCount="indefinite"/></circle><circle cx="40" cy="40" r="1" fill="%238b5cf6" opacity="0.5"><animate attributeName="cy" values="40;10;40" dur="3s" repeatCount="indefinite"/></circle><circle cx="60" cy="60" r="3" fill="%2306b6d4" opacity="0.2"><animate attributeName="cy" values="60;20;60" dur="5s" repeatCount="indefinite"/></circle><circle cx="80" cy="30" r="1.5" fill="%23f59e0b" opacity="0.4"><animate attributeName="cy" values="30;70;30" dur="3.5s" repeatCount="indefinite"/></circle></svg>');
    background-size: 100px 100px;
    animation: floatParticles 20s linear infinite;
    z-index: -1;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    25% { background-position: 0% 50%; }
     100% { background-position: 0% 50%; }
}

@keyframes floatParticles {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(-100px) rotate(360deg); }
}

/* Additional Background Animations */
@keyframes pulse {
    0% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
    100% { opacity: 0.3; transform: scale(1); }
     25% { opacity: 0.8; transform: scale(1.1); }
}

@keyframes bounceIn {
    0% { transform: translateY(100px); opacity: 0; }
    60% { transform: translateY(-10px); opacity: 1; }
    100% { transform: translateY(0); opacity: 1; }
     60% { transform: translateY(-10px); opacity: 1; }
}

@keyframes slideInLeft {
    0% { transform: translateX(-100px); opacity: 0; }
    100% { transform: translateX(0); opacity: 1; }
}

@keyframes slideInRight {
    0% { transform: translateX(100px); opacity: 0; }
    100% { transform: translateX(0); opacity: 1; }
}

@keyframes fadeInUp {
    0% { transform: translateY(30px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

@keyframes rotateIn {
    0% { transform: rotate(-180deg); opacity: 0; }
    100% { transform: rotate(0deg); opacity: 1; }
}

/* Enhanced Elements with Animations */
.hero-title {
    animation: fadeInUp 1s ease 0.5s both;
}

.hero-subtitle {
    animation: fadeInUp 1s ease 0.7s both;
}

.hero-description {
    animation: fadeInUp 1s ease 0.9s both;
}

.hero-buttons {
    animation: fadeInUp 1s ease 1.1s both;
}

.social-links {
    animation: fadeInUp 1s ease 1.3s both;
}

.profile-img {
    animation: rotateIn 1s ease 0.8s both;
}

.image-bg {
    animation: pulse 3s ease-in-out infinite;
}

.floating-card {
    animation: float 6s ease-in-out infinite, bounceIn 1s ease both;
}

.skill-item {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-item:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.timeline-card {
    animation: slideInLeft 0.8s ease both;
}

.timeline-item:nth-child(even) .timeline-card {
    animation: slideInRight 0.8s ease both;
}

.experience-card {
    animation: bounceIn 0.8s ease both;
}

.project-card {
    animation: fadeInUp 0.8s ease both;
}

.contact-item {
    animation: slideInLeft 0.8s ease both;
}

.contact-form {
    animation: slideInRight 0.8s ease both;
}

/* Staggered Animation Delays */
.skill-category:nth-child(1) { animation-delay: 0.2s; }
.skill-category:nth-child(2) { animation-delay: 0.4s; }
.skill-category:nth-child(3) { animation-delay: 0.6s; }

.experience-card:nth-child(1) { animation-delay: 0.2s; }
.experience-card:nth-child(2) { animation-delay: 0.4s; }

.project-card:nth-child(1) { animation-delay: 0.2s; }
.project-card:nth-child(2) { animation-delay: 0.4s; }
.project-card:nth-child(3) { animation-delay: 0.6s; }

.contact-item:nth-child(1) { animation-delay: 0.2s; }
.contact-item:nth-child(2) { animation-delay: 0.4s; }
.contact-item:nth-child(3) { animation-delay: 0.6s; }

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

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

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

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 50%;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow-light);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-container {
    position: relative;
    width: 400px;
    height: 400px;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 2rem;
    box-shadow: var(--shadow-large);
    position: relative;
    z-index: 2;
}

.image-bg {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 2rem;
    z-index: 1;
}

/* Section Styling */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--bg-primary);
    margin-top: 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.stat:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.stat h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat p {
    color: var(--text-secondary);
    font-weight: 600;
}

.about-img-container {
    position: relative;
    height: 400px;
}

.floating-card {
    position: absolute;
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-medium);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    animation: float 6s ease-in-out infinite;
}

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

.card-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 20%;
    animation-delay: 2s;
}

.card-3 {
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

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

/* Skills Section */
.skills {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

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

.skill-category h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.skill-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    transition: var(--transition);
}

.skill-item:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.skill-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.skill-item:hover .skill-icon {
    color: white;
}

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

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
    border: 4px solid white;
    box-shadow: var(--shadow-medium);
}

.timeline-card {
    width: 45%;
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.timeline-item:nth-child(odd) .timeline-card {
    margin-left: 55%;
}

.timeline-item:nth-child(even) .timeline-card {
    margin-right: 55%;
}

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

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.timeline-header h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
}

.timeline-date {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.875rem;
}

.timeline-content h4 {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    margin-bottom: 1rem;
}

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

.tag {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

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

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.experience-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

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

.experience-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.company-logo {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.experience-info h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.experience-info h4 {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.experience-date {
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
}

.experience-achievements {
    margin: 1rem 0;
    padding-left: 1rem;
}

.experience-achievements li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

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

.skill-tag {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Projects Section */
.projects {
    padding: 5rem 0;
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

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

.project-image {
    height: 200px;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

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

.project-link {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.project-content {
    padding: 2rem;
}

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

.project-content p {
    margin-bottom: 1.5rem;
}

.project-tech {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tech-tag {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-details h3 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.contact-details p {
    color: var(--text-secondary);
    margin: 0;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-light);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    align-items: center;
    text-align: center;
}

.footer-left h3 {
    color: white;
    margin-bottom: 0.5rem;
}

.footer-left p {
    color: #9ca3af;
}

.footer-center .social-links .social-link {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.footer-center .social-links .social-link:hover {
    background: var(--primary-color);
}

.footer-right p {
    color: #9ca3af;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        height: 0;
        background: white;
        flex-direction: column;
        overflow: hidden;
        transition: var(--transition);
        box-shadow: var(--shadow-medium);
    }
    
    .nav-menu.active {
        height: auto;
        padding: 2rem 0;
    }
    
    .hero-content,
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-card {
        width: calc(100% - 60px);
        margin-left: 60px !important;
        margin-right: 0 !important;
    }
    
    .timeline-dot {
        left: 20px;
        transform: none;
    }
    
    .experience-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .skill-items {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .image-container {
        width: 300px;
        height: 300px;
    }
}