/* Root variables */
:root {
    --bg-dark: #020617;
    --bg-card: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #9ca3af;
    --accent-primary: #22d3ee;
    --accent-hover: #06b6d4;
    --accent-secondary: #38bdf8;
    --border-color: #1e293b;
    --font-main: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --radius-pill: 999px;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    background-image: 
        radial-gradient(circle at top left, #0f172a 0%, transparent 50%),
        radial-gradient(circle at 110% -10%, #22d3ee22 0%, transparent 55%);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

ul {
    list-style: none;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: .75rem 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-initials {
    background: var(--accent-primary);
    color: #0f172a;
    font-weight: 800;
    width: 32px;
    height: 32px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.logo-text {
    font-weight: 600;
    font-size: 1rem;
    color: #f1f5f9;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-muted);
}

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

.btn-nav {
    background: var(--accent-primary);
    color: #0f172a !important;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.85rem;
}

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

/* Hero section */
.hero-section {
    max-width: 1100px;
    margin: 3rem auto 0;
    padding: 0 1.5rem;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    color: white;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.tagline {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* Tech badges row */
.hero-tech-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-pill {
    padding: 0.3rem 0.9rem;
    border-radius: var(--radius-pill);
    border: 1px solid #334155;
    color: #94a3b8;
    background: transparent;
    font-size: 0.8rem;
    transition: border-color 0.2s, color 0.2s;
}

.tech-pill:hover {
    border-color: var(--accent-primary);
    color: var(--text-main);
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.hero-description strong {
    color: var(--text-main);
    font-weight: 600;
}

/* Meta badges with icons */
.hero-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 2rem;
    align-items: center;
}

.meta-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-pill);
    background-color: rgba(15, 23, 42, 0.6);
    border: 1px solid #1e293b;
    color: #cbd5e1;
    font-size: 0.85rem;
    white-space: nowrap;
}

.meta-pill svg {
    color: #f472b6;
    flex-shrink: 0;
}

.meta-pill:nth-child(2) svg {
    color: #a78bfa;
}

.meta-pill:nth-child(3) svg {
    color: #fb923c;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Button styles */
.btn {
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    transition: all 0.2s;
    cursor: pointer;
    display: inline-block;
    font-size: 0.9rem;
}

.btn-primary {
    background: var(--accent-primary);
    color: #0f172a;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

/* Project preview card */
.project-preview-container {
    position: relative;
    perspective: 1000px;
    width: 100%;
    height: 360px;
}

.project-preview-card {
    width: 100%;
    height: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    text-decoration: none;
}

.project-preview-card:hover {
    transform: rotateY(0) rotateX(0) scale(1.02);
    border-color: var(--accent-primary);
}

.preview-header {
    padding: 1rem;
    background: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-main);
}

.preview-badge {
    font-size: 0.7rem;
    padding: 0.2rem 0.55rem;
    background: rgba(34, 211, 238, 0.15);
    color: var(--accent-primary);
    border-radius: 999px;
    font-weight: 600;
}

.preview-image {
    flex: 1;
    background-size: cover;
    background-position: center top;
    background-repeat: no-repeat;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding: 1.5rem;
    position: relative;
}

.preview-overlay {
    background: rgba(2, 6, 23, 0.85);
    padding: 1rem;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    color: var(--accent-primary);
    font-weight: 500;
    font-size: 0.9rem;
    text-align: center;
}

/* Sections */
section {
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.section-header {
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.section-header p {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Projects grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: transform 0.3s, border-color 0.3s;
}

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

.project-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.project-tech {
    color: var(--accent-secondary);
    font-weight: 600;
}

.project-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

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

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.tech-tags span {
    background: rgba(30, 41, 59, 0.5);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    color: #cbd5e1;
    border: 1px solid #334155;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-links a {
    font-weight: 600;
    color: var(--accent-primary);
    font-size: 0.9rem;
}

.project-links a:hover {
    text-decoration: underline;
}

.disabled-link {
    color: var(--text-muted) !important;
    cursor: not-allowed;
}

.disabled-link:hover {
    text-decoration: none !important;
}

.more-projects-link {
    text-align: center;
    margin-top: 3rem;
}

.more-projects-link a {
    color: var(--text-muted);
    font-weight: 600;
}

.more-projects-link a:hover {
    color: var(--accent-primary);
}

/* Skills section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-column h3 {
    color: var(--accent-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.skill-column ul li {
    margin-bottom: 0.75rem;
    padding-left: 1rem;
    border-left: 2px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.95rem;
}

.skill-column ul li strong {
    color: var(--text-main);
}

/* Experience section */
.experience-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.exp-header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.exp-header h3 {
    font-size: 1.2rem;
    color: var(--text-main);
}

.exp-company {
    color: var(--accent-primary);
    font-weight: 600;
}

.exp-date {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.exp-details li {
    margin-bottom: 0.75rem;
    position: relative;
    padding-left: 1.5rem;
    color: var(--text-muted);
}

.exp-details li::before {
    content: "▸";
    color: var(--accent-primary);
    position: absolute;
    left: 0;
    font-weight: bold;
}

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

.edu-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.edu-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.edu-school {
    display: block;
    color: var(--accent-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.edu-date,
.edu-status {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    font-style: italic;
}

.edu-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.cert-tags span {
    display: inline-block;
    background: rgba(30, 41, 59, 0.5);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    color: var(--text-muted);
    border: 1px solid #334155;
}

/* Contact section */
.contact-section {
    margin-top: 2rem;
}

.contact-container {
    background: linear-gradient(145deg, var(--bg-card), #1e293b);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
}

.contact-container h2 {
    margin-bottom: 1rem;
}

.contact-container p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    padding: 0.75rem 1.5rem;
    background: rgba(30, 41, 59, 0.5);
    border-radius: 8px;
    transition: all 0.2s;
}

.contact-link:hover {
    background: var(--accent-primary);
    color: #0f172a;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-text {
        margin: 0 auto;
    }
    
    .hero-text h1 {
        font-size: 2.8rem;
    }
    
    .hero-tech-row,
    .hero-meta-row,
    .hero-actions {
        justify-content: center;
    }
    
    .project-preview-container {
        height: 260px;
    }
    
    .project-preview-card {
        transform: none;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 1rem;
    }
}