/* ─── Reset & Base ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent:    #38b6ff;
  --accent-dk: #1a9ee8;
  --dark:      #111416;
  --dark2:     #1e2328;
  --mid:       #2c3240;
  --light:     #f5f7fa;
  --muted:     #8a96a3;
  --white:     #ffffff;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', 'Cascadia Code', monospace;
  --radius:    12px;
  --shadow:    0 4px 24px rgba(0,0,0,0.18);
  --transition: 0.25s ease;
  --max-w:     1140px;
}

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

body {
  font-family: var(--font-sans);
  background: var(--dark);
  color: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--white); }
img { max-width: 100%; height: auto; display: block; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark2); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

#progress {
  position: fixed; top: 0; left: 0; height: 3px;
  background: var(--accent); width: 0%; z-index: 9999;
  transition: width 0.1s linear;
}

/* ─── Nav ───────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem; height: 60px;
  background: rgba(17,20,22,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(56,182,255,0.1);
}
.nav-brand { font-size: 1.1rem; font-weight: 700; color: var(--white); }
.nav-brand span { color: var(--accent); }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { color: var(--muted); font-size: 0.875rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; transition: color var(--transition); }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--white); font-size: 1.4rem; }

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--dark2); border-bottom: 1px solid var(--mid); }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 1rem 2rem; border-bottom: 1px solid var(--mid); }
}

/* ─── Hero ──────────────────────────────────────────── */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 60%, #0d1b2a 100%);
}
.hero-bg { position: absolute; inset: 0; background: url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?w=1600&q=80') center/cover no-repeat; opacity: 0.06; }
.hero-content { position: relative; z-index: 2; padding: 2rem; max-width: 760px; }
.hero-eyebrow { font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 1rem; }
.hero-name {
  font-size: clamp(2.8rem, 7vw, 5.5rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 40%, var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 1rem;
}
.hero-subtitle { font-size: clamp(1rem, 2.5vw, 1.3rem); color: var(--muted); margin-bottom: 2rem; min-height: 2em; }
.typed { color: var(--accent); border-right: 2px solid var(--accent); padding-right: 2px; }
.hero-social { display: flex; gap: 1rem; justify-content: center; margin-bottom: 2.5rem; }
.hero-social a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(56,182,255,0.3); color: var(--muted); font-size: 1rem; transition: all var(--transition); }
.hero-social a:hover { border-color: var(--accent); color: var(--accent); background: rgba(56,182,255,0.08); }
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.75rem 1.8rem; border-radius: 40px; font-size: 0.9rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; transition: all var(--transition); cursor: pointer; }
.btn-primary { background: var(--accent); color: var(--dark); border: 2px solid var(--accent); }
.btn-primary:hover { background: transparent; color: var(--accent); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.25); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.scroll-hint { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 0.5rem; color: var(--muted); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; animation: bounce-y 2s infinite; }
@keyframes bounce-y { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* ─── Sections ──────────────────────────────────────── */
section { padding: 6rem 2rem; }
.container { max-width: var(--max-w); margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-tag { display: inline-block; padding: 0.25rem 1rem; border-radius: 20px; background: rgba(56,182,255,0.12); color: var(--accent); font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 1rem; }
.section-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; letter-spacing: -0.02em; color: var(--white); margin-bottom: 1rem; }
.section-sub { color: var(--muted); font-size: 1.05rem; max-width: 520px; margin: 0 auto; }

/* ─── About ─────────────────────────────────────────── */
#about { background: var(--dark2); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
@media (max-width: 768px) { .about-grid { grid-template-columns: 1fr; gap: 2.5rem; } }
.about-avatar-wrap { display: flex; justify-content: center; }
.about-avatar { width: 280px; height: 280px; border-radius: 50%; object-fit: cover; border: 3px solid var(--accent); box-shadow: 0 0 0 8px rgba(56,182,255,0.08), var(--shadow); }
.about-text h2 { font-size: 2rem; font-weight: 800; margin-bottom: 1rem; }
.about-text p { color: var(--muted); margin-bottom: 1.2rem; line-height: 1.8; }
.about-meta { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 2rem; }
.about-meta-item { display: flex; align-items: center; gap: 0.75rem; color: var(--muted); font-size: 0.9rem; }
.about-meta-item .ico { color: var(--accent); }

.skills-section-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; margin-top: 3rem; }
.skill-card { background: var(--dark); border: 1px solid var(--mid); border-radius: var(--radius); padding: 1.5rem; transition: all var(--transition); }
.skill-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.skill-name { font-weight: 600; margin-bottom: 0.75rem; font-size: 0.9rem; }
.skill-bar { height: 4px; background: var(--mid); border-radius: 2px; overflow: hidden; }
.skill-fill { height: 100%; background: var(--accent); border-radius: 2px; }
.skill-level { font-size: 0.75rem; color: var(--muted); margin-top: 0.4rem; }

/* ─── Professional ──────────────────────────────────── */
#professional { background: var(--dark); }
.pillars-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.pillar-card { background: var(--dark2); border: 1px solid var(--mid); border-radius: var(--radius); padding: 2rem; transition: all var(--transition); position: relative; overflow: hidden; }
.pillar-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform var(--transition); }
.pillar-card:hover::before { transform: scaleX(1); }
.pillar-card:hover { border-color: rgba(56,182,255,0.3); transform: translateY(-4px); box-shadow: var(--shadow); }
.pillar-icon { font-size: 2.5rem; margin-bottom: 1.25rem; }
.pillar-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.75rem; }
.pillar-desc { color: var(--muted); font-size: 0.9rem; line-height: 1.7; }

/* ─── Now ───────────────────────────────────────────── */
#now { background: linear-gradient(135deg, var(--dark2), #0d1b2a); border-top: 1px solid var(--mid); border-bottom: 1px solid var(--mid); }
.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }
.project-card { background: rgba(255,255,255,0.04); border: 1px solid rgba(56,182,255,0.15); border-radius: var(--radius); padding: 1.75rem; transition: all var(--transition); }
.project-card:hover { background: rgba(56,182,255,0.06); border-color: rgba(56,182,255,0.35); transform: translateY(-4px); }
.project-name { font-size: 1rem; font-weight: 700; margin-bottom: 0.6rem; }
.project-desc { color: var(--muted); font-size: 0.875rem; line-height: 1.7; margin-bottom: 1rem; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag { display: inline-block; padding: 0.2rem 0.75rem; border-radius: 20px; background: rgba(56,182,255,0.1); color: var(--accent); font-size: 0.75rem; font-weight: 600; }

/* ─── Blog cards ────────────────────────────────────── */
#blog { background: var(--dark2); }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem; }
.post-card { background: var(--dark); border: 1px solid var(--mid); border-radius: var(--radius); padding: 1.75rem; display: flex; flex-direction: column; transition: all var(--transition); }
.post-card:hover { border-color: rgba(56,182,255,0.3); transform: translateY(-4px); box-shadow: var(--shadow); }
.post-meta { font-size: 0.75rem; color: var(--muted); margin-bottom: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; }
.post-title { font-size: 1.05rem; font-weight: 700; color: var(--white); margin-bottom: 0.75rem; line-height: 1.4; }
.post-title a { color: inherit; }
.post-title a:hover { color: var(--accent); }
.post-excerpt { color: var(--muted); font-size: 0.875rem; line-height: 1.7; flex: 1; margin-bottom: 1.25rem; }
.post-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.25rem; }
.post-link { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); }

.load-more-wrap { text-align: center; margin-top: 3rem; }

/* ─── Contact ───────────────────────────────────────── */
#contact { background: var(--dark); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
@media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; }
.contact-info p { color: var(--muted); line-height: 1.8; margin-bottom: 2rem; }
.contact-links { display: flex; flex-direction: column; gap: 1rem; }
.contact-link { display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem; border-radius: var(--radius); background: var(--dark2); border: 1px solid var(--mid); color: var(--muted); font-size: 0.9rem; transition: all var(--transition); }
.contact-link:hover { border-color: var(--accent); color: var(--white); }

.contact-form-wrap { background: var(--dark2); border: 1px solid var(--mid); border-radius: var(--radius); padding: 2rem; }
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 0.5rem; }
.form-control { width: 100%; padding: 0.85rem 1rem; border-radius: 8px; background: var(--dark); border: 1px solid var(--mid); color: var(--white); font-size: 0.95rem; font-family: var(--font-sans); transition: border-color var(--transition); outline: none; }
.form-control:focus { border-color: var(--accent); }
textarea.form-control { resize: vertical; min-height: 130px; }

/* ─── Footer ────────────────────────────────────────── */
footer { background: var(--dark2); border-top: 1px solid var(--mid); padding: 2rem; text-align: center; color: var(--muted); font-size: 0.85rem; }
footer a { color: var(--accent); }

/* ─── Blog Post Page ────────────────────────────────── */
.post-page { padding-top: 100px; padding-bottom: 4rem; max-width: 760px; margin: 0 auto; padding-left: 2rem; padding-right: 2rem; }
.post-page-header { margin-bottom: 3rem; }
.post-page-title { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; line-height: 1.2; margin-bottom: 1rem; }
.post-page-meta { color: var(--muted); font-size: 0.85rem; display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }

.post-content { color: rgba(255,255,255,0.85); line-height: 1.85; }
.post-content h1,.post-content h2,.post-content h3 { color: var(--white); font-weight: 700; margin: 2rem 0 1rem; line-height: 1.3; }
.post-content h1 { font-size: 1.8rem; }
.post-content h2 { font-size: 1.5rem; border-bottom: 1px solid var(--mid); padding-bottom: 0.5rem; }
.post-content h3 { font-size: 1.2rem; }
.post-content p { margin-bottom: 1.25rem; }
.post-content a { color: var(--accent); }
.post-content img { border-radius: 10px; margin: 1.5rem auto; box-shadow: var(--shadow); }
.post-content ul, .post-content ol { padding-left: 1.75rem; margin-bottom: 1.25rem; }
.post-content li { margin-bottom: 0.5rem; }
.post-content blockquote { border-left: 3px solid var(--accent); padding-left: 1.25rem; color: var(--muted); font-style: italic; margin: 1.5rem 0; }
.post-content code { background: var(--mid); padding: 0.15em 0.45em; border-radius: 4px; font-family: var(--font-mono); font-size: 0.88em; color: var(--accent); }
.post-content pre { background: var(--dark2); border: 1px solid var(--mid); border-radius: 10px; padding: 1.25rem; overflow-x: auto; margin-bottom: 1.5rem; }
.post-content pre code { background: none; padding: 0; font-size: 0.875rem; color: var(--white); }
.post-content strong { color: var(--white); }

.post-back { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--muted); font-size: 0.875rem; margin-bottom: 2rem; transition: color var(--transition); }
.post-back:hover { color: var(--accent); }

/* ─── Blog List ─────────────────────────────────────── */
.blog-list-page { padding-top: 100px; min-height: 100vh; }
.blog-list-header { text-align: center; padding: 4rem 2rem; background: var(--dark2); border-bottom: 1px solid var(--mid); }
.blog-list-header h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; margin-bottom: 0.75rem; }
.blog-list-header p { color: var(--muted); max-width: 520px; margin: 0 auto 2rem; }
.blog-search { position: relative; max-width: 480px; margin: 0 auto; }
.blog-search input { width: 100%; padding: 0.85rem 1rem 0.85rem 2.75rem; background: var(--dark); border: 1px solid var(--mid); border-radius: 40px; color: var(--white); font-size: 0.95rem; outline: none; transition: border-color var(--transition); }
.blog-search input:focus { border-color: var(--accent); }
.blog-search-icon { position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; color: var(--muted); }
.blog-list-body { max-width: var(--max-w); margin: 0 auto; padding: 3rem 2rem; }

/* ─── Animations ────────────────────────────────────── */
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ─── 404 ───────────────────────────────────────────── */
.not-found { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 100vh; text-align: center; padding: 2rem; }
.not-found h1 { font-size: 6rem; font-weight: 900; color: var(--accent); line-height: 1; }
.not-found h2 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
.not-found p { color: var(--muted); margin-bottom: 2rem; }

/* ─── Contact Form — validation & states ──────────── */
.form-error {
  display: none; font-size: 0.78rem; color: #ff6b6b;
  margin-top: 0.35rem;
}
.form-group.invalid .form-control { border-color: #ff6b6b; }
.form-group.invalid .form-error   { display: block; }
.form-group.valid  .form-control  { border-color: #4caf50; }

/* Spinner inside submit button */
.cf-spinner {
  display: none; width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(0,0,0,0.2);
  border-top-color: var(--dark);
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.cf-submit.sending .cf-btn-text { display: none; }
.cf-submit.sending .cf-spinner  { display: inline-block; }
.cf-submit:disabled { opacity: 0.65; cursor: not-allowed; }

/* Result banners */
.cf-banner {
  display: none; margin-top: 1.25rem; padding: 0.9rem 1.1rem;
  border-radius: 8px; font-size: 0.9rem; font-weight: 500;
  text-align: center; animation: fadeIn 0.3s ease;
}
@keyframes fadeIn { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:none; } }
.cf-banner.show   { display: block; }
.cf-success { background: rgba(76,175,80,0.15);  border: 1px solid rgba(76,175,80,0.4);  color: #81c784; }
.cf-fail    { background: rgba(244,67,54,0.12);  border: 1px solid rgba(244,67,54,0.35); color: #e57373; }
.cf-fail a  { color: var(--accent); }

/* ─── Post thumbnails ───────────────────────────────── */
.post-thumb-link { display: block; margin: -1.75rem -1.75rem 1.25rem; overflow: hidden; border-radius: var(--radius) var(--radius) 0 0; }
.post-thumb { width: 100%; height: 180px; object-fit: cover; display: block; transition: transform 0.4s ease; }
.post-card:hover .post-thumb { transform: scale(1.04); }

/* Hero image on individual post page */
.post-hero-img {
  width: 100%; max-height: 420px; object-fit: cover;
  border-radius: var(--radius); margin-bottom: 2rem;
  box-shadow: var(--shadow);
}