/* Custom CSS Variables */
:root {
    --bg-primary: #0b0f19;
    --bg-secondary: #111827;
    --bg-accent: #1f2937;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-color: #3b82f6; /* Modern Blue */
    --accent-hover: #2563eb;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --border-color: #374151;
    --max-width: 1100px;
}

/* Base Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Helper Utilities */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.max-width-sm {
    max-width: 600px !important;
}

.text-center {
    text-align: center;
}

.section {
    padding: 6rem 0;
}

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

.section-subtitle {
    display: block;
    color: var(--accent-color);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    letter-spacing: -0.02em;
}

/* Typography Overrides */
.hero-subtitle {
    font-size: 1.75rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.about-intro {
    max-width: 800px;
    margin-bottom: 3rem;
}

.about-intro p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.card-highlight-title {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #ffffff;
    border: none;
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    margin-left: 1rem;
}

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

.btn-block {
    width: 100%;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    background-color: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

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

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.btn-nav {
    background-color: var(--bg-accent);
    color: var(--text-primary) !important;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

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

/* Hero Section */
.hero {
    padding: 8rem 0 6rem 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.badge {
    display: inline-block;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-color);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.hero-text p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 540px;
}

/* Profile Image Container */
.profile-avatar-container {
    position: relative;
    width: 280px;
    height: 280px;
    margin: 0 auto;
    z-index: 2;
}

.profile-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--bg-accent);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.profile-avatar:hover {
    transform: scale(1.02);
    border-color: var(--accent-color);
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.accent-blob {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent-color), #8b5cf6);
    filter: blur(80px);
    opacity: 0.45;
    border-radius: 50%;
}

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

.grid-three-col {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s, border-color 0.2s;
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
}

.project-content {
    padding: 2rem;
}

.compact-padding {
    padding: 1.5rem;
}

.project-category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--accent-color);
    margin-bottom: 0.75rem;
    display: block;
}

.project-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

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

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

.project-tags span {
    background-color: var(--bg-accent);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

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

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-2rem - 7px);
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--accent-color);
    border: 3px solid var(--bg-secondary);
}

.timeline-date {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.timeline-content .company {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

/* Certifications Panel Details */
.border-top-gitlab {
    border-top: 3px solid var(--accent-color);
}

.border-top-appdynamics {
    border-top: 3px solid #00b4d8;
}

.border-top-ibm {
    border-top: 3px solid #4f46e5;
}

.cert-title {
    margin-bottom: 0.75rem;
    font-weight: 600;
    font-size: 1.1rem;
}

.cert-list {
    list-style: none;
    padding: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.cert-list li {
    margin-bottom: 0.4rem;
}

/* Contact Section Clean-up styles */
.contact-cta-container {
    margin-top: 2.5rem;
    display: flex;
    justify-content: center;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.15rem;
    font-family: inherit;
    font-weight: 600;
    letter-spacing: 0.03em;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(59, 130, 246, 0.45);
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-socials {
    display: flex;
    gap: 1.5rem;
}

.footer-socials a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-socials a:hover {
    color: var(--accent-color);
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    .hero-text h1 {
        font-size: 2.5rem;
    }
    .hero-text p {
        margin: 0 auto 2rem auto;
    }
    .hero-actions {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }
    .btn-secondary {
        margin-left: 0;
    }
    .accent-blob {
        display: none; /* Clear background glow on small viewports for fast rendering */
    }
    .profile-avatar-container {
        width: 220px;
        height: 220px;
    }
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    .nav-links {
        gap: 1rem;
    }
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}