/* 
  Main Stylesheet for Personal Portfolio
  Clean and Modern Design 
*/

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

:root {
    /* Main color scheme - can be customized */
    --primary-color: #5e35b1;
    --primary-light: #9162e4;
    --primary-dark: #280680;
    --accent-color: #60dafb;
    --text-dark: #333333;
    --text-light: #757575;
    --bg-light: #ffffff;
    --bg-dark: #f5f5f5;
    --success: #4caf50;
    --error: #f44336;
    
    /* Typography */
    --body-font: 'Poppins', sans-serif;
    --h1-size: 3.5rem;
    --h2-size: 2.5rem;
    --h3-size: 1.75rem;
    --h4-size: 1.25rem;
    --body-size: 1.1rem;
    --small-size: 0.9rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Other */
    --border-radius: 8px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease-in-out;
}

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

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

a:hover {
    color: var(--primary-light);
}

ul {
    list-style-type: none;
}

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

/* Container */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

section {
    padding: var(--spacing-lg) 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: var(--h1-size);
}

h2 {
    font-size: var(--h2-size);
}

h3 {
    font-size: var(--h3-size);
}

h4 {
    font-size: var(--h4-size);
}

p {
    margin-bottom: var(--spacing-sm);
}

.highlight {
    color: var(--primary-color);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.underline {
    height: 5px;
    width: 80px;
    background: var(--primary-color);
    margin: 0 auto;
    margin-top: var(--spacing-xs);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

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

.primary-btn:hover {
    background: var(--primary-light);
    color: white;
}

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

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

.small-btn {
    padding: 0.5rem 1rem;
    font-size: var(--small-size);
}

/* Header & Navigation */
header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1rem 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
}

.nav-links li {
    margin-left: var(--spacing-md);
}

.nav-links a {
    color: var(--text-dark);
    font-weight: 500;
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 5px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-color: var(--bg-light);
    padding-top: 80px; /* For header space */
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero h1 {
    margin-bottom: var(--spacing-xs);
}

.hero h2 {
    color: var(--text-light);
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
}

.tagline {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
}

.cta-buttons {
    margin-bottom: var(--spacing-md);
}

.cta-buttons .btn {
    margin: 0 var(--spacing-xs);
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-dark);
    color: var(--primary-color);
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
    color: white;
}

/* About Section */
.about {
    background-color: var(--bg-dark);
}

.about-content {
    display: grid;
    gap: var(--spacing-lg);
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
}

.timeline {
    margin: var(--spacing-md) 0;
}

.timeline-item {
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--primary-color);
}

.date {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    display: block;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.skill-category h4 {
    margin-bottom: var(--spacing-xs);
}

.skill-category ul li {
    margin-bottom: var(--spacing-xs);
    position: relative;
    padding-left: 20px;
}

.skill-category ul li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

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

.project-card:hover {
    transform: translateY(-5px);
}

.project-image {
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-details {
    padding: var(--spacing-sm);
}

.project-details h3 {
    margin-bottom: var(--spacing-xs);
}

.project-links {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

/* Contact Section */
.contact {
    background-color: var(--bg-dark);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.contact-list {
    margin-top: var(--spacing-sm);
}

.contact-list li {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.contact-list li i {
    margin-right: var(--spacing-xs);
    color: var(--primary-color);
}

.contact-form {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: var(--body-font);
}

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

/* Footer */
footer {
    background-color: var(--text-dark);
    color: white;
    padding: var(--spacing-md) 0;
}

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

footer .social-icons a {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

footer .social-icons a:hover {
    background-color: var(--primary-color);
}

/* Media Queries for Responsive Design */
@media screen and (max-width: 768px) {
    :root {
        --h1-size: 2.5rem;
        --h2-size: 2rem;
        --h3-size: 1.5rem;
        --body-size: 1rem;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background-color: white;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        padding: var(--spacing-sm) 0;
        transition: var(--transition);
        text-align: center;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        margin: var(--spacing-xs) 0;
    }
    
    .hamburger {
        display: block;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}