/* --- CSS Variables & Reset --- */
:root {
    --bg-color: #0f172a;
    --bg-darker: #020617;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #3b82f6; /* Bright Blue */
    --accent-glow: rgba(59, 130, 246, 0.5);
    --card-bg: #1e293b;
    --font-main: 'Outfit', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

/* --- Typography --- */
h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s ease;
}

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

.section {
    padding: 80px 20px;
}

.bg-darker {
    background-color: var(--bg-darker);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 50px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    width: 60px;
    height: 4px;
    background: var(--accent);
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* --- Navigation --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center; /* Ensures items align vertically */
}

.nav-links a {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
}

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

/* --- FIX: Specific Style for Navbar Button --- */
.nav-links .btn-primary {
    padding: 8px 24px;          /* Smaller padding */
    font-size: 0.9rem;          /* Adjusted font size */
    background-color: transparent; /* Transparent background */
    border: 1px solid var(--accent); /* Blue border */
    color: var(--accent);       /* Blue text (fixes visibility) */
    box-shadow: none;           /* Remove glow for cleaner look */
}

.nav-links .btn-primary:hover {
    background-color: var(--accent);
    color: white;               /* White text on hover */
    transform: translateY(0);   /* Stop jumping effect */
    box-shadow: 0 0 15px var(--accent-glow);
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- Buttons (Global) --- */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

/* Default primary button (used in Hero/Contact) */
.btn-primary {
    background-color: var(--accent);
    color: white;
    box-shadow: 0 0 15px var(--accent-glow);
    border: 1px solid transparent; /* Placeholder for layout stability */
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 25px var(--accent-glow);
}

.btn-secondary {
    border: 2px solid var(--text-secondary);
    color: var(--text-primary);
    margin-left: 10px;
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* --- 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 70%);
    padding: 0 20px;
}

.tagline {
    color: var(--accent);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 10px;
    display: block;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 10px;
}

.hero h2 {
    font-size: 1.8rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-weight: 400;
}

.hero p {
    max-width: 600px;
    margin: 0 auto 30px auto;
    color: var(--text-secondary);
}

/* --- About Grid --- */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
}

.experience-box, .education-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 15px;
    margin-top: 20px;
    border: 1px solid rgba(255,255,255,0.05);
}

.experience-box h3, .education-card h3 {
    margin-bottom: 15px;
    color: var(--accent);
}

.job, .edu-item {
    border-left: 2px solid var(--accent);
    padding-left: 15px;
    margin-bottom: 20px;
}

.job span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* --- Skills --- */
.skills-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.skill-category h3 {
    margin-bottom: 20px;
    text-align: center;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.tags span {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(59, 130, 246, 0.3);
    transition: 0.3s;
}

.tags span:hover {
    background: var(--accent);
    color: white;
}

/* --- Projects --- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.project-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    transition: transform 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.05);
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-header i {
    font-size: 2rem;
    color: var(--accent);
}

.card-header .links a {
    font-size: 1.2rem;
    margin-left: 15px;
    color: var(--text-secondary);
}

.card-header .links a:hover {
    color: var(--text-primary);
}

.project-card h3 {
    margin-bottom: 10px;
}

.tech-stack {
    font-size: 0.85rem;
    color: var(--accent);
    font-family: monospace;
    margin-bottom: 15px;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.mini-projects {
    text-align: center;
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
}

.mini-projects ul {
    list-style: none;
    margin-top: 15px;
}

.mini-projects li {
    margin-bottom: 10px;
}

.mini-projects a:hover {
    color: var(--accent);
}

/* --- Contact --- */
.contact-container {
    text-align: center;
}

.contact-sub {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 1.2rem;
    gap: 10px;
}

.contact-item i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 10px;
}

/* --- Footer --- */
footer {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

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

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

/* --- Mobile Responsive --- */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .about-grid { grid-template-columns: 1fr; }
    .nav-links {
        position: absolute;
        right: 0;
        top: 70px;
        background: var(--card-bg);
        flex-direction: column;
        width: 50%;
        padding: 30px;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
    }
    .nav-links.nav-active { transform: translateX(0); }
    .hamburger { display: block; color: var(--text-primary); }

    .nav-links .btn-primary {
        width: 100%;          
        text-align: center;   
        white-space: nowrap;  
        margin-top: 10px; 
    }
}