/* CSS Variables for easy customization */
:root {
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #38bdf8;
    --accent-hover: #0ea5e9;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --transition-fast: 0.3s ease;
    --transition-slow: 0.6s ease;
}

/* Global Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, .logo {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

ul {
    list-style: none;
}

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

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

section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 2px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(56, 189, 248, 0.2);
}

.btn-secondary {
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    margin-left: 1rem;
}

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

/* Navbar Styling */
#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition-fast);
}

#navbar.sticky {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

#navbar nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo span {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a:hover {
    color: var(--accent-color);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 5px;
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
    position: relative;
}

.hero h5 {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.hero h1 span {
    color: var(--accent-color);
}

.hero h3 {
    font-size: 1.8rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero p {
    max-width: 600px;
    margin: 0 auto 3rem;
    color: var(--text-secondary);
}

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

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

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.detail-item i {
    color: var(--accent-color);
    width: 20px;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 15px;
    transition: var(--transition-fast);
}

.skill-category:hover {
    transform: translateY(-5px);
    border: 1px solid var(--accent-color);
}

.skill-category h4 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-badges span {
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent-color);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Experience Section (Timeline) */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid var(--bg-secondary);
}

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

.timeline-dot {
    position: absolute;
    left: calc(-2rem - 6px);
    top: 0;
    width: 12px;
    height: 12px;
    background-color: var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-color);
}

.timeline-date {
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.timeline-content {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 15px;
}

.timeline-content h3 {
    margin-bottom: 0.3rem;
}

.timeline-content h4 {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.timeline-content ul {
    color: var(--text-secondary);
    padding-left: 1.2rem;
}

.timeline-content li {
    margin-bottom: 0.5rem;
    list-style-type: disc;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-info {
    padding: 2rem;
    flex-grow: 1;
}

.project-info h3 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.project-info p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

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

.tech-stack span {
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    color: var(--text-secondary);
}

/* Resume Section */
.resume {
    text-align: center;
    background: var(--bg-secondary);
}

.resume p {
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

/* Contact Section */
.contact-wrapper {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-info p {
    margin-bottom: 3rem;
    color: var(--text-secondary);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.2rem;
    background: var(--bg-secondary);
    padding: 1rem 2rem;
    border-radius: 10px;
    width: 100%;
    justify-content: center;
    border: 1px solid transparent;
}

.contact-item:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background: transparent;
}

.contact-item i {
    color: var(--accent-color);
}

/* Footer */
footer {
    padding: 3rem 0;
    background: #080e1a;
    border-top: 1px solid var(--bg-secondary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

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

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.social-links a:hover {
    color: var(--accent-color);
}

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .section-title { font-size: 2rem; }
    .hero h1 { font-size: 2.8rem; }
    .hero h3 { font-size: 1.4rem; }
    .container {
        padding: 0 1rem;
    }
    section {
        padding: 60px 0;
    }
    .about-details {
        gap: 0.5rem;
        margin-top: 1rem;
    }
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .project-info {
        padding: 1.2rem;
    }
    .timeline {
        padding-left: 1rem;
    }
    .timeline-content {
        padding: 1.2rem;
    }
    .contact-wrapper {
        padding: 0 0.5rem;
    }
    .contact-item {
        padding: 0.7rem 1rem;
        font-size: 1rem;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    .nav-links {
        position: fixed;
        right: -100%;
        top: 0;
        height: 100vh;
        width: 70%;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: 0.5s;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    .nav-links.active {
        right: 0;
    }
    .hamburger {
        display: block;
        z-index: 1001;
    }
    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -6px); }
    .hero-btns {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }
    .btn-secondary { margin-left: 0; }
}

@media (max-width: 480px) {
    .section-title { font-size: 1.3rem; }
    .hero h1 { font-size: 2rem; }
    .hero h3 { font-size: 1.1rem; }
    .hero p { font-size: 0.95rem; }
    .project-info h3 { font-size: 1.1rem; }
    .project-info p { font-size: 0.85rem; }
    .skill-category { padding: 1rem; }
    .timeline-content { padding: 0.8rem; }
    .contact-item { font-size: 0.95rem; padding: 0.5rem 0.5rem; }
    .footer-content { gap: 0.5rem; }
    .container { padding: 0 0.5rem; }
}
}