/* 
   Theme: Azure / Turquoise 
   Colors: Deep Blue (#0078D4), Turquoise Accent, Clean White/Gray backgrounds.
*/

:root {
    --primary-color: #0078D4; /* Microsoft Blue */
    --secondary-color: #17A2B8; /* Azure Cyan/Turquoise */
    --dark-bg: #0F1C2E;
    --light-bg: #f4f7f6;
    --text-main: #333;
    --text-light: #fff;
    --font-stack: 'Roboto', sans-serif;
}

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

body {
    font-family: var(--font-stack);
    color: var(--text-main);
    line-height: 1.6;
    background-color: #fff;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: var(--text-light);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: color 0.3s;
}

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

.btn-nav {
    background-color: var(--primary-color) !important;
    color: white !important;
    padding: 8px 15px;
    border-radius: 4px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #0F1C2E 0%, #0078D4 100%);
    color: var(--text-light);
    padding: 160px 0 100px;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 10px;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto 30px;
}

.hero-cta {
    display: inline-block;
    margin-top: 20px;
}

.hero-desc {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-top: 5px;
    display: block;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 120, 212, 0.3);
}

.btn-lg {
    font-size: 1.1rem;
}

/* Sections General */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 50px;
    position: relative;
}

/* About Section */
.about-content p {
    margin-bottom: 15px;
}

.about-grid h3 {
    color: var(--secondary-color);
    margin-bottom: 10px;
    margin-top: 20px;
}

.about-grid ul {
    list-style-position: inside;
}

/* Expertise Section */
.expertise {
    background-color: var(--light-bg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.skill-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    border-top: 4px solid var(--primary-color);
}

.skill-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    display: block;
}

/* Experience Section */
.timeline-item {
    background: white;
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    border-left: 5px solid var(--secondary-color);
}

.timeline-date {
    font-size: 0.9rem;
    color: #777;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.timeline-content h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.timeline-content h4 {
    font-weight: 700;
    color: #555;
    margin-bottom: 10px;
}

.tech-list {
    list-style-type: none;
    margin-top: 10px;
}

.tech-list li {
    background: #eef2f4;
    padding: 8px;
    border-radius: 4px;
    font-size: 0.9rem;
    color: #555;
    margin-bottom: 5px;
}

/* Projects Section */
.projects {
    background-color: #fff;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.project-card {
    padding: 20px;
    border: 1px solid #eee;
    border-radius: 8px;
    transition: box-shadow 0.3s;
}

.project-card:hover {
    box-shadow: 0 5px 20px rgba(0, 120, 212, 0.15);
}

/* Footer */
.footer {
    background-color: var(--dark-bg);
    color: white;
    text-align: center;
    padding: 60px 0;
}

.footer-cta {
    margin-bottom: 40px;
}

.social-links p {
    opacity: 0.7;
    font-size: 0.9rem;
    margin-top: 20px;
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    .hero-title { font-size: 2rem; }
    .nav-links { display: none; } /* Simplified for mobile - usually hamburger menu needed */
    .logo { flex-grow: 1; text-align: center; }
}