/* Glass Morphism Portfolio - Modern CSS */
:root {
    --primary-blue: #4F6BFF;
    --secondary-blue: #6B8CFF;
    --accent-blue: #8BA8FF;
    --light-blue: #A7C0FF;
    --background-start: #E8F1FF;
    --background-mid: #D3E5FF;
    --background-end: #BDD7FF;
    --text-dark: #1A2B5A;
    --text-medium: #4A5F8A;
    --text-light: #6B7FA0;
    --white: #FFFFFF;
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: rgba(31, 38, 135, 0.37);
    --success-color: #22c55e;
    --error-color: #ef4444;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    background: linear-gradient(135deg, var(--background-start) 0%, var(--background-mid) 50%, var(--background-end) 100%);
    background-attachment: fixed;
    color: var(--text-dark);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Glass morphism navigation */
.glass-nav {
    position: fixed;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: 90%;
    max-width: 800px;
}

.nav-container {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    padding: 0.5rem;
    box-shadow: 0 8px 32px var(--glass-shadow);
}

.nav-pills {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.nav-pill {
    color: var(--text-medium);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.8rem 1.2rem;
    border-radius: 25px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.nav-pill::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.nav-pill:hover::before {
    left: 100%;
}

.nav-pill:hover,
.nav-pill.active {
    color: var(--white);
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    box-shadow: 0 4px 15px rgba(79, 107, 255, 0.4);
    transform: translateY(-2px);
}


/* Main container */
.main-container {
    padding-top: 6rem;
    min-height: 100vh;
}

/* Page transitions */
.page {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: calc(100vh - 6rem);
    padding: 2rem;
}

.page.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.page.fade-out {
    opacity: 0;
    transform: translateY(-20px);
}

/* Glass cards */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 32px var(--glass-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(31, 38, 135, 0.5);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Hero section */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 6rem);
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 800px;
    padding: 0 2rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-dark), var(--primary-blue));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-medium);
    margin-bottom: 2rem;
    font-weight: 500;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(79, 107, 255, 0.4);
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    color: var(--text-dark);
    border: 1px solid var(--glass-border);
}

.btn-primary:hover,
.btn-secondary:hover {
    transform: translateY(-3px);
}

.btn-primary:hover {
    box-shadow: 0 6px 25px rgba(79, 107, 255, 0.6);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 6px 25px var(--glass-shadow);
}

/* Page content */
.page-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    color: var(--text-medium);
}

/* About page */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.profile-section {
    text-align: center;
}

.profile-photo {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--white);
    box-shadow: 0 8px 32px var(--glass-shadow);
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.profile-photo:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(31, 38, 135, 0.5);
}

.highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.highlight-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.highlight-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.2);
}

.highlight-item i {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.highlight-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.highlight-item p {
    color: var(--text-medium);
}

/* Skills page */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-card {
    text-align: center;
}

.skill-icon {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
}

.skill-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.skill-list {
    display: grid;
    gap: 1.5rem;
}

.skill-category {
    margin-bottom: 1.5rem;
}

.skill-category h4 {
    color: var(--text-dark);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.skill-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

.skill-item i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    width: 24px;
    text-align: center;
}

.skill-item span {
    font-weight: 500;
    color: var(--text-dark);
}

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

.experience-card {
    text-align: center;
    position: relative;
}

.experience-logo {
    margin-bottom: 1.5rem;
}

.company-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: 15px;
    background: var(--white);
    padding: 0.5rem;
    box-shadow: 0 4px 15px rgba(31, 38, 135, 0.2);
}

.experience-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.experience-details {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.experience-role,
.experience-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-medium);
    font-size: 0.9rem;
}

.experience-role i,
.experience-date i {
    color: var(--primary-blue);
}

.experience-list {
    list-style: none;
    text-align: left;
}

.experience-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    color: var(--text-medium);
    line-height: 1.6;
}

.experience-list li i {
    color: var(--primary-blue);
    margin-top: 0.2rem;
    font-size: 0.8rem;
}

/* Education page */
.education-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.education-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-blue), var(--secondary-blue));
    opacity: 0.3;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    justify-content: flex-end;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
}

.timeline-logo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 80px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(31, 38, 135, 0.3);
    z-index: 2;
}

.edu-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: 50%;
}

.timeline-content {
    width: calc(50% - 60px);
    margin: 0 20px;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.timeline-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-content ul {
    list-style: none;
}

.timeline-content li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    color: var(--text-medium);
    line-height: 1.6;
}

.timeline-content li i {
    color: var(--primary-blue);
    margin-top: 0.2rem;
    font-size: 0.8rem;
}

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

.project-card {
    text-align: center;
    position: relative;
}

.project-icon {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
}

.project-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.project-card p {
    color: var(--text-medium);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

.project-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    transition: all 0.3s ease;
}

.project-link:hover {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(79, 107, 255, 0.4);
}

/* Contact page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
}

.contact-info h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.contact-info p {
    color: var(--text-medium);
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-top: 0.2rem;
}

.contact-item h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-item p {
    color: var(--text-medium);
    margin: 0;
}

/* Social links */
.social-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.social-link:hover {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(79, 107, 255, 0.4);
}

.social-link i {
    font-size: 1.2rem;
}

/* Contact form */
.contact-form-card h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.contact-form {
    display: grid;
    gap: 1.5rem;
}

.form-group {
    display: grid;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--text-dark);
    font-size: 1rem;
    transition: all 0.3s ease;
    resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(79, 107, 255, 0.1);
    background: rgba(255, 255, 255, 0.2);
}

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

/* reCAPTCHA styling */
.g-recaptcha {
    display: flex;
    justify-content: center;
    margin: 1rem 0;
}

.g-recaptcha > div {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(31, 38, 135, 0.2);
}

/* Form help text styling */
.form-help {
    color: var(--text-light);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: block;
}

/* Button styling for project links */
.experience-card .btn-primary {
    margin-top: 1rem;
    align-self: flex-start;
}

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

/* Responsive design */
@media (max-width: 768px) {
    .g-recaptcha {
        transform: scale(0.85);
        transform-origin: center;
    }
    
    .glass-nav {
        top: 1rem;
        width: 95%;
    }
    
    .nav-pills {
        flex-wrap: wrap;
        gap: 0.3rem;
    }
    
    .nav-pill {
        font-size: 0.8rem;
        padding: 0.6rem 1rem;
    }
    
    .main-container {
        padding-top: 8rem;
    }
    
    .page {
        padding: 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-photo {
        width: 200px;
        height: 200px;
    }
    
    .highlights {
        grid-template-columns: 1fr;
    }
    
    .skills-grid,
    .experience-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-item {
        flex-direction: column;
    }
    
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        justify-content: center;
    }
    
    .education-timeline::before {
        left: 2rem;
    }
    
    .timeline-logo {
        position: static;
        transform: none;
        margin-bottom: 1rem;
    }
    
    .timeline-content {
        width: 100%;
        margin: 0;
    }
    
    .experience-details {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .social-links {
        flex-direction: column;
    }
    
    .project-links {
        flex-direction: column;
    }
    
    .glass-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .nav-pills {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
    }
    
    .nav-pill {
        text-align: center;
        font-size: 0.75rem;
        padding: 0.5rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .page-content {
        padding: 0 1rem;
    }
    
    .glass-card {
        padding: 1rem;
    }
    
    .g-recaptcha {
        transform: scale(0.77);
        transform-origin: center;
    }
}

/* Notification styles */
.notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 2rem;
    border-radius: 15px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 8px 32px var(--glass-shadow);
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
    border: 1px solid var(--glass-border);
}

.notification.success {
    border-left: 4px solid var(--success-color);
}

.notification.error {
    border-left: 4px solid var(--error-color);
}

.notification.fade-out {
    animation: slideOut 0.3s ease-out forwards;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Email validation styles */
.email-error {
    color: var(--error-color);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: none;
}

.form-group input.error {
    border-color: var(--error-color);
}

/* Loading states for buttons */
.btn-primary.loading,
.btn-secondary.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn-primary.loading .fas,
.btn-secondary.loading .fas {
    animation: spin 1s linear infinite;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection styles */
::selection {
    background: rgba(79, 107, 255, 0.3);
    color: var(--text-dark);
}

::-moz-selection {
    background: rgba(79, 107, 255, 0.3);
    color: var(--text-dark);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--secondary-blue), var(--accent-blue));
}