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

:root {
    --primary-color: #00d4ff;
    --secondary-color: #0099cc;
    --accent-color: #00bfff;
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #888888;
    --border-color: #333333;
    --shadow-color: rgba(0, 212, 255, 0.1);
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    --gradient-secondary: linear-gradient(135deg, #00bfff 0%, #0066cc 100%);
    --vh: 1vh; /* Custom viewport height property */
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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 20px;
}

/* Typography */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo .logo-text {
    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 {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

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

.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%;
}

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

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    min-height: calc(100vh - 70px); /* Account for fixed navbar */
    min-height: calc(var(--vh, 1vh) * 100 - 70px); /* Use custom viewport height */
    min-height: -webkit-fill-available; /* iOS Safari fallback */
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
    padding: 70px 0 20px 0; /* Add top padding to account for fixed navbar */
    box-sizing: border-box; /* Ensure padding is included in height calculation */
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23333" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 5;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    z-index: 10;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 2px 10px var(--shadow-color);
}

.btn-primary:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.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);
}

.btn-secondary:active {
    transform: translateY(0) scale(0.98);
}

.btn-secondary:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

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

.profile-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 20px 40px var(--shadow-color);
    animation: float 6s ease-in-out infinite;
    border: 4px solid var(--primary-color);
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.profile-photo:hover {
    transform: scale(1.05);
}

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

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-right: 2px solid var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* About Section */
.about {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 25px var(--shadow-color);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.education-card {
    background: var(--bg-tertiary);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.education-card h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.education-item h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.education-item p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.education-gpa {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1rem;
}

/* Skills Section */
.skills {
    padding: 100px 0;
    background: var(--bg-primary);
}

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

.skill-category {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 35px var(--shadow-color);
}

.category-title {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.skill-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    transition: all 0.3s ease;
}

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

.skill-item i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

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

.skill-item span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Projects Section */
.projects {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.project-card {
    background: var(--bg-tertiary);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.project-image {
    height: 200px;
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
}

.project-content {
    padding: 2rem;
}

.project-title {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

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

.tech-tag {
    background: var(--bg-primary);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

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

.project-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.project-link:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

/* Experience Section */
.experience {
    padding: 100px 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(--gradient-primary);
    transform: translateX(-50%);
}

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

.timeline-marker {
    position: absolute;
    left: 50%;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translateX(-50%);
    border: 4px solid var(--bg-primary);
    box-shadow: 0 0 0 4px var(--primary-color);
}

.timeline-content {
    width: 45%;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    position: relative;
}

.timeline-item:nth-child(odd) .timeline-content {
    left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    left: 55%;
}

.timeline-header {
    margin-bottom: 1rem;
}

.timeline-title {
    color: var(--primary-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-company {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: block;
}

.timeline-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    display: block;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

.timeline-description li {
    margin-bottom: 0.5rem;
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.contact-info h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

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

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.contact-method:hover {
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.contact-method i {
    font-size: 1.5rem;
    color: var(--primary-color);
    width: 30px;
}

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

.contact-method a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.contact-form {
    background: var(--bg-tertiary);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

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

.form-group label {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

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

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

/* Footer */
.footer {
    background: var(--bg-primary);
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p {
    color: var(--text-muted);
}

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

.footer-social a {
    color: var(--text-muted);
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    /* Hero section mobile improvements */
    .hero {
        min-height: 100vh !important;
        min-height: calc(100vh - 70px) !important; /* Account for fixed navbar */
        padding: 90px 0 40px 0 !important; /* Increase padding for mobile */
        align-items: flex-start !important; /* Align to top on mobile */
        justify-content: center !important; /* Center content vertically */
        box-sizing: border-box !important;
    }
    
    .hero-container {
        padding: 0 15px !important; /* Reduce side padding on mobile */
        display: flex !important;
        flex-direction: column !important;
        justify-content: center !important;
        min-height: calc(100vh - 70px) !important; /* Ensure container takes full available height */
        box-sizing: border-box !important;
    }
    
    .hero-content {
        grid-template-columns: 1fr !important;
        text-align: center !important;
        gap: 2rem !important;
        padding-top: 2rem !important; /* Add top padding for content */
        flex: 1 !important;
        display: flex !important;
        flex-direction: column !important;
        justify-content: center !important;
        box-sizing: border-box !important;
    }
    
    .hero-title {
        font-size: 2.5rem !important;
        margin-bottom: 1.5rem !important; /* Increase bottom margin */
        line-height: 1.1 !important; /* Tighter line height for mobile */
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
    }
    
    .hero-subtitle {
        font-size: 1.3rem !important; /* Slightly smaller for mobile */
        margin-bottom: 2rem !important; /* Increase bottom margin */
        line-height: 1.3 !important; /* Better line height for mobile */
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
    }
    
    .hero-description {
        font-size: 1rem !important; /* Slightly smaller for mobile */
        margin-bottom: 2.5rem !important; /* Increase bottom margin */
        line-height: 1.5 !important; /* Better line height for mobile */
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-marker {
        left: 20px;
    }
    
    .timeline-content {
        width: calc(100% - 60px);
        left: 60px !important;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    /* Hero section extra small mobile improvements */
    .hero {
        padding: 100px 0 50px 0 !important; /* Even more padding for very small screens */
        min-height: 100vh !important;
        min-height: calc(100vh - 70px) !important; /* Account for fixed navbar */
        box-sizing: border-box !important;
    }
    
    .hero-container {
        padding: 0 10px !important; /* Minimal side padding */
        min-height: calc(100vh - 70px) !important; /* Ensure container takes full available height */
        box-sizing: border-box !important;
    }
    
    .hero-content {
        padding-top: 1rem !important; /* Reduce top padding for very small screens */
        gap: 1.5rem !important; /* Reduce gap */
        flex: 1 !important;
        display: flex !important;
        flex-direction: column !important;
        justify-content: center !important;
        box-sizing: border-box !important;
    }
    
    .hero-title {
        font-size: 2rem !important;
        margin-bottom: 1rem !important;
        line-height: 1.1 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
    }
    
    .hero-subtitle {
        font-size: 1.2rem !important;
        margin-bottom: 1.5rem !important;
        line-height: 1.2 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
    }
    
    .hero-description {
        font-size: 0.95rem !important;
        margin-bottom: 2rem !important;
        line-height: 1.4 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Additional mobile viewport fixes */
@media (max-width: 360px) {
    .hero {
        padding: 110px 0 60px 0 !important;
        min-height: 100vh !important;
        min-height: calc(100vh - 70px) !important;
        min-height: calc(var(--vh, 1vh) * 100 - 70px) !important;
    }
    
    .hero-container {
        padding: 0 8px !important;
        min-height: calc(100vh - 70px) !important;
        min-height: calc(var(--vh, 1vh) * 100 - 70px) !important;
    }
    
    .hero-content {
        padding-top: 0.5rem !important;
        gap: 1rem !important;
    }
    
    .hero-title {
        font-size: 1.8rem !important;
        margin-bottom: 0.8rem !important;
    }
    
    .hero-subtitle {
        font-size: 1.1rem !important;
        margin-bottom: 1.2rem !important;
    }
    
    .hero-description {
        font-size: 0.9rem !important;
        margin-bottom: 1.5rem !important;
    }
}

/* Force mobile hero layout for all mobile devices */
@media (max-width: 768px) {
    .hero {
        min-height: calc(var(--vh, 1vh) * 100 - 70px) !important;
        height: calc(var(--vh, 1vh) * 100 - 70px) !important;
        max-height: calc(var(--vh, 1vh) * 100 - 70px) !important;
    }
    
    .hero-container {
        height: 100% !important;
        min-height: calc(var(--vh, 1vh) * 100 - 70px) !important;
    }
    
    .hero-content {
        height: 100% !important;
        min-height: calc(var(--vh, 1vh) * 100 - 70px) !important;
    }
}

/* Smooth scrolling for older browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}