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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
}

a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #004499;
}

strong {
    font-weight: 600;
    color: #222;
}

/* ===================================
   Container
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===================================
   Header
   =================================== */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #222;
}

.logo .highlight {
    color: #0066cc;
}

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

.nav-link {
    color: #333;
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: #0066cc;
    border-bottom-color: #0066cc;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    background: linear-gradient(135deg, #0066cc 0%, #004499 100%);
    color: #fff;
    padding: 5rem 0;
    text-align: center;
}

.hero-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-button {
    display: inline-block;
    background-color: #fff;
    color: #0066cc;
    padding: 1rem 2rem;
    border-radius: 5px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    color: #004499;
}

/* ===================================
   Section Styles
   =================================== */
.section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #222;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #0066cc;
}

/* ===================================
   About Section
   =================================== */
.about-section {
    background-color: #f9f9f9;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: justify;
}

/* ===================================
   Skills Section
   =================================== */
.skills-section {
    background-color: #fff;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-card {
    background-color: #f9f9f9;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.skill-title {
    font-size: 1.3rem;
    color: #0066cc;
    margin-bottom: 1rem;
}

.skill-list {
    list-style: none;
}

.skill-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #e0e0e0;
}

.skill-list li:last-child {
    border-bottom: none;
}

.skill-list li::before {
    content: '✓ ';
    color: #0066cc;
    font-weight: bold;
    margin-right: 0.5rem;
}

/* ===================================
   Capabilities Section
   =================================== */
.capabilities-section {
    background-color: #f9f9f9;
}

.capabilities-intro {
    max-width: 900px;
    margin: 0 auto 3rem;
}

.capabilities-intro-text {
    font-size: 1.1rem;
    line-height: 1.8;
    text-align: center;
    color: #555;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.capability-card {
    background-color: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.capability-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.capability-title {
    font-size: 1.4rem;
    color: #0066cc;
    margin-bottom: 1rem;
}

.capability-description {
    color: #555;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.capability-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.capability-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #333;
}

.capability-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: #0066cc;
    font-weight: bold;
}

/* ===================================
   Blog Section
   =================================== */
.blog-section {
    background-color: #fff;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.blog-card {
    background-color: #f9f9f9;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.blog-card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.blog-card-title {
    font-size: 1.3rem;
    color: #222;
    margin-bottom: 0.5rem;
}

.blog-card-title a {
    color: #222;
    transition: color 0.3s ease;
}

.blog-card-title a:hover {
    color: #0066cc;
}

.blog-card-excerpt {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
    flex-grow: 1;
}

.blog-card-link {
    color: #0066cc;
    font-weight: 600;
    display: inline-block;
}

.blog-card-link:hover {
    text-decoration: underline;
}

.blog-empty {
    text-align: center;
    color: #666;
    font-style: italic;
    padding: 2rem;
}

/* ===================================
   Contact Section
   =================================== */
.contact-section {
    background-color: #f9f9f9;
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-text {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.contact-info {
    margin: 2rem 0;
}

.contact-email {
    font-size: 1.5rem;
    font-weight: 600;
    color: #0066cc;
    display: inline-block;
    padding: 1rem 2rem;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.contact-email:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: #222;
    color: #fff;
    text-align: center;
    padding: 2rem 0;
}

.footer-text {
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-list {
        gap: 1rem;
        justify-content: center;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.7rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item {
        padding-left: 3rem;
    }

    .timeline-item::before {
        left: 4px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 3rem 0;
    }

    .hero-title {
        font-size: 1.7rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 3rem 0;
    }

    .cta-button {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }

    .contact-email {
        font-size: 1.2rem;
        padding: 0.8rem 1.5rem;
    }
}