/* --- Reset & Variables --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    scroll-behavior: smooth;
}

:root {
    --bg-color: #0b0f19;
    --card-bg: #151c2c;
    --card-hover: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --accent-color: #38bdf8;
    --accent-hover: #0284c7;
    --border-color: #243048;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

/* --- Header / Navbar --- */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(11, 15, 25, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 10%;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

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

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

/* --- Buttons & UI Elements --- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

.btn-outline {
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

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

.badge {
    background-color: rgba(56, 189, 248, 0.1);
    color: var(--accent-color);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

section {
    padding: 6rem 10%;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 0.5rem auto 0;
    border-radius: 2px;
}

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 3.8rem;
    margin: 1rem 0 0.5rem 0;
}

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

.hero h2 {
    font-size: 1.8rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    font-size: 1.4rem;
}

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

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

.about-text p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

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

.stat-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem 1rem;
    border-radius: 8px;
    text-align: center;
}

.stat-card h3 {
    font-size: 2rem;
    color: var(--accent-color);
}

.stat-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* --- Skills Section --- */
.skills-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.skill-category h3 {
    margin-bottom: 1rem;
    color: var(--text-muted);
    font-size: 1.1rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.2rem;
}

.skill-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
}

.skill-card i {
    font-size: 1.2rem;
    color: var(--accent-color);
}

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

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}

.timeline-dot {
    position: absolute;
    left: -2.55rem;
    top: 5px;
    width: 14px;
    height: 14px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

.timeline-date {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.timeline-content {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.timeline-content h3 {
    font-size: 1.2rem;
}

.timeline-content h4 {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-bottom: 0.8rem;
}

.timeline-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

.project-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.8rem;
    transition: transform 0.3s, border-color 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.project-icon {
    font-size: 2rem;
    color: var(--accent-color);
}

.project-links i {
    font-size: 1.2rem;
}

.project-card h3 {
    margin-bottom: 0.8rem;
}

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

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.project-tags span {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --- Contact Section --- */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.contact-details p {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.8rem;
    color: var(--text-color);
}

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

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.9rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-color);
}

/* --- Footer --- */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* --- Responsive Layout --- */
@media (max-width: 868px) {
    .about-grid,
    .contact-container {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.8rem;
    }

    .menu-toggle {
        display: block;
    }

    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-color);
        border-bottom: 1px solid var(--border-color);
        padding: 1rem 0;
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }
}