/* ========================================
   PBI THEME - MAIN CSS
   Dark / Tech-forward / Minimalist
======================================== */

:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111114;
    --bg-card: #16161a;
    --bg-card-hover: #1e1e24;
    --accent: #4f8ef7;
    --accent-dim: rgba(79, 142, 247, 0.15);
    --accent-glow: rgba(79, 142, 247, 0.3);
    --text-primary: #f0f0f4;
    --text-secondary: #8888a0;
    --text-muted: #55556a;
    --border: rgba(255,255,255,0.07);
    --border-accent: rgba(79, 142, 247, 0.3);
    --font-display: 'Syne', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius: 8px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-weight: 300;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ---- NOISE TEXTURE OVERLAY ---- */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    opacity: 0.4;
}

/* ---- TYPOGRAPHY ---- */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 5rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }

p { color: var(--text-secondary); line-height: 1.8; }

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--text-primary); }

/* ---- LAYOUT ---- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

section { padding: 6rem 0; }

/* ---- HEADER / NAV ---- */
#site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.2rem 0;
    transition: background var(--transition), border-color var(--transition);
    border-bottom: 1px solid transparent;
}

#site-header.scrolled {
    background: rgba(10, 10, 11, 0.92);
    backdrop-filter: blur(20px);
    border-color: var(--border);
}

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

.site-logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

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

nav ul {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

nav ul a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: color var(--transition);
}

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

.nav-cta {
    background: var(--accent-dim);
    border: 1px solid var(--border-accent);
    color: var(--accent) !important;
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius);
    transition: background var(--transition), box-shadow var(--transition) !important;
}

.nav-cta:hover {
    background: var(--accent) !important;
    color: var(--bg-primary) !important;
    box-shadow: 0 0 20px var(--accent-glow);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.5rem 0.8rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1.2rem;
}

/* ---- HERO ---- */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 8rem 0 4rem;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(79, 142, 247, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

#hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent-dim);
    border: 1px solid var(--border-accent);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeUp 0.6s 0.2s forwards;
}

.hero-tag::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-title {
    opacity: 0;
    animation: fadeUp 0.7s 0.35s forwards;
    margin-bottom: 0.5rem;
}

.hero-title .line-2 {
    color: var(--accent);
    display: block;
}

.hero-tagline {
    font-family: var(--font-mono);
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: var(--text-secondary);
    margin: 1.2rem 0 2.5rem;
    opacity: 0;
    animation: fadeUp 0.7s 0.5s forwards;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.7s 0.65s forwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 400;
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 500;
}

.btn-primary:hover {
    background: #6fa3ff;
    color: var(--bg-primary);
    box-shadow: 0 0 30px var(--accent-glow);
    transform: translateY(-2px);
}

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

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

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border);
    opacity: 0;
    animation: fadeUp 0.7s 0.8s forwards;
}

.stat-item {}

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

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

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.2rem;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- SECTION HEADERS ---- */
.section-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 0.8rem;
}

.section-title { margin-bottom: 1rem; }

.section-intro {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin-bottom: 3.5rem;
}

/* ---- ABOUT ---- */
#about { background: var(--bg-secondary); }

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-content p { margin-bottom: 1.2rem; }

.about-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 2rem;
}

.skill-tag {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.35rem 0.9rem;
    border-radius: 4px;
    transition: all var(--transition);
}

.skill-tag:hover {
    border-color: var(--border-accent);
    color: var(--accent);
    background: var(--accent-dim);
}

.about-visual {
    position: relative;
}

.about-card-stack {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.about-card:hover { border-color: var(--border-accent); }

.about-card-icon {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
}

.about-card h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    margin-bottom: 0.3rem;
}

.about-card p { font-size: 0.85rem; }

/* ---- SERVICES ---- */
#services {}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

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

.service-card:hover::before { transform: scaleX(1); }

.service-icon {
    font-size: 2rem;
    margin-bottom: 1.2rem;
}

.service-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
}

.service-card p { font-size: 0.85rem; line-height: 1.7; }

/* ---- EXPERIENCE ---- */
#experience { background: var(--bg-secondary); }

.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, var(--accent), transparent);
}

.timeline-item {
    position: relative;
    padding-bottom: 3rem;
    padding-left: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.4rem;
    top: 0.4rem;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    letter-spacing: 0.1em;
    margin-bottom: 0.4rem;
}

.timeline-role {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.timeline-company {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
}

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

/* ---- BLOG/ARTICLES ---- */
#blog {}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.8rem;
    transition: all var(--transition);
}

.article-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-3px);
}

.article-date {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    margin-bottom: 0.8rem;
}

.article-card h3 {
    font-size: 1rem;
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.article-card p { font-size: 0.85rem; }

.article-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.8rem;
    color: var(--accent);
    margin-top: 1.2rem;
    font-family: var(--font-mono);
    transition: gap var(--transition);
}

.article-link:hover { gap: 0.6rem; color: var(--accent); }

/* ---- CONTACT ---- */
#contact { background: var(--bg-secondary); }

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: start;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    color: var(--text-secondary);
    transition: all var(--transition);
}

.contact-link:hover {
    border-color: var(--border-accent);
    color: var(--text-primary);
    transform: translateX(4px);
}

.contact-link-icon { font-size: 1.2rem; }

.contact-link-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: block;
    font-family: var(--font-mono);
}

.contact-link-value {
    font-size: 0.9rem;
    color: var(--text-primary);
    display: block;
}

/* Contact form */
.contact-form {}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.85rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: border-color var(--transition);
    outline: none;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--border-accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-group textarea { min-height: 120px; }

/* ---- FOOTER ---- */
#site-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: 2.5rem 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    transition: color var(--transition);
}

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

/* ---- SCROLL REVEAL ---- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
    .about-grid,
    .contact-inner { grid-template-columns: 1fr; gap: 3rem; }

    .services-grid,
    .articles-grid { grid-template-columns: 1fr 1fr; }

    .hero-stats { gap: 2rem; }
}

@media (max-width: 640px) {
    section { padding: 4rem 0; }

    .services-grid,
    .articles-grid { grid-template-columns: 1fr; }

    .hero-stats { flex-wrap: wrap; gap: 1.5rem; }

    nav ul { display: none; }
    nav ul.open { 
        display: flex; 
        flex-direction: column; 
        position: absolute; 
        top: 100%; 
        left: 0; 
        right: 0; 
        background: var(--bg-secondary);
        padding: 1.5rem 2rem;
        border-bottom: 1px solid var(--border);
        gap: 1.2rem;
    }

    .menu-toggle { display: block; }

    .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
}


/* ---- ABOUT PHOTO ---- */
.about-photo-wrap {
    width: 100%;
    margin: 0 auto;
}
.about-photo {
    width: 100%;
    border-radius: 12px;
    display: block;
    filter: brightness(0.92) contrast(1.05);
    border: 1px solid rgba(79, 142, 247, 0.2);
}