/* ===== CSS Variables - Professional Blue Theme ===== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #1e293b;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --text-white: #f1f5f9;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-light);
}

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

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

ul {
    list-style: none;
}

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--secondary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
}

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

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

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    padding: 15px 0;
}

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

.logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.3;
}

.logo span {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.85rem;
}

.nav-links {
    display: flex;
    gap: 35px;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

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

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
    opacity: 0.1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    color: white;
    font-size: 3.5rem;
    margin-bottom: 10px;
}

.hero-text h1 span {
    color: var(--primary-light);
}

.hero-text .subtitle {
    color: var(--accent);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-text p {
    color: var(--text-white);
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    position: relative;
    text-align: center;
}

.hero-image img {
    width: 350px;
    height: 350px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--primary-light);
    box-shadow: 0 0 60px rgba(37, 99, 235, 0.3);
}

.experience-badge {
    position: absolute;
    bottom: 30px;
    right: 30px;
    background: var(--accent);
    color: var(--secondary);
    padding: 15px 25px;
    border-radius: 12px;
    font-weight: 700;
    box-shadow: var(--shadow-lg);
}

.experience-badge span {
    display: block;
    font-size: 2rem;
}

/* ===== Section Styling ===== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    margin-bottom: 15px;
}

.section-header h2 span {
    color: var(--primary);
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
}

/* ===== About Section ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image img {
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.about-text h3 {
    color: var(--primary);
    margin-bottom: 20px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 25px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.skill-item:hover {
    transform: translateX(5px);
    border-left: 3px solid var(--primary);
}

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

/* ===== Services/Expertise Section ===== */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.expertise-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    border: 1px solid var(--border);
}

.expertise-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.expertise-card .icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: white;
}

.expertise-card h3 {
    margin-bottom: 15px;
}

/* ===== Blog Section ===== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.blog-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.blog-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.blog-card-content {
    padding: 25px;
}

.blog-card .category {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.blog-card h3 {
    margin-bottom: 10px;
    font-size: 1.25rem;
}

.blog-card h3:hover {
    color: var(--primary);
}

.blog-card .meta {
    display: flex;
    gap: 20px;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 15px;
}

.blog-card .meta i {
    margin-right: 5px;
    color: var(--primary);
}

/* ===== Blog Post Page ===== */
.blog-post {
    padding-top: 120px;
    padding-bottom: 80px;
}

.blog-post-header {
    text-align: center;
    margin-bottom: 40px;
}

.blog-post-header .category {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: 600;
    margin-bottom: 20px;
}

.blog-post-header h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.blog-post-header .meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    color: var(--text-light);
}

.blog-post-header .meta i {
    margin-right: 8px;
    color: var(--primary);
}

.blog-post-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-lg);
}

.blog-post-content {
    max-width: 800px;
    margin: 0 auto;
}

.blog-post-content h2 {
    margin: 40px 0 20px;
    color: var(--primary-dark);
}

.blog-post-content h3 {
    margin: 30px 0 15px;
}

.blog-post-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.blog-post-content ul, .blog-post-content ol {
    margin: 20px 0 20px 30px;
}

.blog-post-content li {
    margin-bottom: 10px;
    color: var(--text-light);
}

.blog-post-content blockquote {
    border-left: 4px solid var(--primary);
    padding: 20px 30px;
    margin: 30px 0;
    background: rgba(37, 99, 235, 0.05);
    border-radius: 0 10px 10px 0;
    font-style: italic;
    font-size: 1.2rem;
}

.blog-post-content code {
    background: var(--secondary);
    color: var(--primary-light);
    padding: 3px 8px;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
}

.blog-post-content pre {
    background: var(--secondary);
    padding: 25px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 25px 0;
}

.blog-post-content pre code {
    background: none;
    padding: 0;
}

/* ===== Contact Section ===== */
.contact {
    background: linear-gradient(135deg, var(--bg-dark), var(--secondary));
}

.contact .section-header h2,
.contact .section-header p {
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    color: white;
}

.contact-info h3 {
    color: white;
    margin-bottom: 20px;
}

.contact-info p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.contact-item span {
    color: rgba(255,255,255,0.9);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    margin-top: 15px;
}

.footer h4 {
    color: white;
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    color: rgba(255,255,255,0.7);
    margin-bottom: 12px;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

/* ===== Blog Page ===== */
.page-header {
    background: linear-gradient(135deg, var(--bg-dark), var(--secondary));
    padding: 150px 0 80px;
    text-align: center;
}

.page-header h1 {
    color: white;
    margin-bottom: 15px;
}

.page-header p {
    color: rgba(255,255,255,0.8);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-content,
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .expertise-grid,
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .nav-links {
        display: none;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .expertise-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-image img {
        width: 250px;
        height: 250px;
    }
}