/* ============================================================
   Portfolio — light futuristic theme
   Type: Space Grotesk (display) / Inter (body) / JetBrains Mono (meta)
   ============================================================ */

:root {
  --bg:          #F5F7FC;
  --surface:     rgba(255, 255, 255, 0.72);
  --surface-2:   rgba(255, 255, 255, 0.92);
  --border:      rgba(16, 24, 40, 0.09);
  --border-lit:  rgba(99, 102, 241, 0.4);

  --text:        #121a2c;
  --body-ink:    #38415a;
  --muted:       #55617a;
  --faint:       #8a95ab;

  --accent:      #5b4be8;     /* readable indigo for labels/links */
  --accent-2:    #0e9fc4;     /* teal-cyan */
  --grad:        linear-gradient(120deg, #6D5CFF 0%, #4F46E5 44%, #0EA5E9 100%);
  --glow-violet: rgba(109, 92, 255, 0.45);
  --glow-cyan:   rgba(14, 165, 233, 0.45);

  --display: "Space Grotesk", "Segoe UI", sans-serif;
  --body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono:    "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --shadow:      0 1px 2px rgba(16,24,40,0.04), 0 14px 40px -16px rgba(79,70,229,0.14);
  --shadow-lit:  0 2px 6px rgba(16,24,40,0.05), 0 18px 46px -14px rgba(79,70,229,0.24);

  --measure: 44rem;
  --gutter: clamp(1.25rem, 5vw, 3rem);
  --radius: 18px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--body-ink);
  background-color: var(--bg);
  background-image:
    radial-gradient(55rem 55rem at 10% -12%, rgba(109,92,255,0.14), transparent 60%),
    radial-gradient(45rem 45rem at 106% 6%, rgba(14,165,233,0.12), transparent 55%),
    radial-gradient(42rem 42rem at 52% 118%, rgba(87,214,198,0.10), transparent 60%);
  background-attachment: fixed;
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
/* faint grid backdrop */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(16,24,40,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,24,40,0.035) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
  pointer-events: none;
}
img { max-width: 100%; height: auto; }
::selection { background: rgba(109,92,255,0.22); color: #1a1240; }

a { color: var(--accent); text-decoration: none; transition: color .15s ease; }
a:hover { color: #3f2fd0; }

/* ---------- layout shell ---------- */
.wrap {
  width: 100%;
  max-width: calc(var(--measure) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- masthead ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 247, 252, 0.72);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border-bottom: 1px solid var(--border);
}
.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.05rem;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand:hover { color: transparent; filter: brightness(1.08); }
.nav {
  display: flex;
  gap: 1.7rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.nav a {
  color: var(--muted);
  position: relative;
  padding-bottom: 3px;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
  transition: right .25s ease;
}
.nav a:hover { color: var(--text); }
.nav a:hover::after { right: 0; }

/* ---------- hero ---------- */
.hero {
  padding-block: clamp(3.5rem, 10vw, 6rem) clamp(2.5rem, 6vw, 4rem);
  position: relative;
}
.hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.3rem;
}
.hero__kicker::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px 2px var(--glow-violet);
  animation: pulse 2.4s ease-in-out infinite;
}
.hero__name {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.7rem, 8vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0;
  background: var(--grad);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 8px 34px rgba(79,70,229,0.22));
  animation: shift 9s ease-in-out infinite;
}
.hero__tagline {
  font-size: clamp(1.1rem, 2.6vw, 1.4rem);
  color: var(--muted);
  margin: 1.3rem 0 0;
  max-width: 36rem;
}
.hero__meta {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  font-family: var(--mono);
  font-size: 0.78rem;
}
.hero__meta span, .hero__meta a {
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  box-shadow: var(--shadow);
  transition: border-color .2s ease, color .2s ease, transform .2s ease;
}
.hero__meta a:hover {
  color: var(--accent);
  border-color: var(--border-lit);
  transform: translateY(-1px);
}

/* ---------- sections as glass panels ---------- */
main { padding-block: clamp(1rem, 3vw, 2rem) 3rem; display: grid; gap: 1.25rem; }
.section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.section:hover { border-color: var(--border-lit); box-shadow: var(--shadow-lit); }
.section__title {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.75rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.section__title::before {
  content: "";
  width: 22px; height: 2px;
  border-radius: 2px;
  background: var(--grad);
}
.section__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

/* ---------- prose ---------- */
.prose { max-width: var(--measure); }
.prose p { margin: 0 0 1.2rem; color: var(--body-ink); }
.prose h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.6rem;
  letter-spacing: -0.01em;
  margin: 2.2rem 0 0.8rem;
  color: var(--text);
}
.prose h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.25rem;
  margin: 1.8rem 0 0.6rem;
  color: var(--text);
}
.prose a { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(91,75,232,0.4); }
.prose ul, .prose ol { padding-left: 1.2rem; margin: 0 0 1.2rem; color: var(--body-ink); }
.prose li { margin-bottom: 0.4rem; }
.prose blockquote {
  margin: 1.5rem 0;
  padding: 0.2rem 0 0.2rem 1.2rem;
  border-left: 3px solid;
  border-image: var(--grad) 1;
  color: var(--muted);
  font-style: italic;
}
.prose code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: rgba(91,75,232,0.10);
  color: #4a3fc4;
  padding: 0.12em 0.4em;
  border-radius: 5px;
}
.prose pre {
  background: #0d1220;
  border: 1px solid rgba(16,24,40,0.12);
  color: #D6E1F0;
  padding: 1.1rem 1.25rem;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.6;
}
.prose pre code { background: none; padding: 0; color: inherit; }

/* ---------- experience / education timeline ---------- */
.timeline { display: flex; flex-direction: column; }
.entry {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 1.6rem;
  padding: 1.5rem 0;
  position: relative;
}
.entry + .entry { border-top: 1px solid var(--border); }
.entry__period {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--faint);
  padding-top: 0.35rem;
  position: relative;
}
.entry__period::before {
  content: "";
  position: absolute;
  left: -1.6rem;
  top: 0.6rem;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px 1px var(--glow-violet);
}
.entry__role {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--text);
}
.entry__company {
  font-weight: 500;
  font-size: 0.95rem;
  margin: 0.2rem 0 0.7rem;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  width: fit-content;
}
.entry__summary { margin: 0; color: var(--muted); }
.entry__summary p { margin: 0 0 0.6rem; }
.entry__summary p:last-child { margin-bottom: 0; }
.entry__summary ul { margin: 0.5rem 0 0; padding-left: 1.1rem; }
.entry__summary li { margin-bottom: 0.45rem; }
.entry__summary li::marker { color: var(--accent); }
.entry__summary li:last-child { margin-bottom: 0; }

/* ---------- skills / definition rows ---------- */
.skills { display: grid; gap: 1.1rem; max-width: var(--measure); margin: 0; }
.skill-row {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 1.6rem;
  align-items: baseline;
}
.skill-row dt {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.skill-row dd { margin: 0; color: var(--body-ink); }

/* ---------- blog list ---------- */
.postlist { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }
.postlist__item {
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.postlist__item:hover {
  border-color: var(--border-lit);
  box-shadow: var(--shadow-lit);
  transform: translateY(-2px);
}
.postlist__date {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--faint);
}
.postlist__title {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  margin: 0.35rem 0 0.5rem;
  line-height: 1.2;
}
.postlist__title a { color: var(--text); }
.postlist__title a:hover { color: var(--accent); }
.postlist__excerpt { margin: 0; color: var(--muted); }

/* ---------- single post ---------- */
.post__header { margin-bottom: 2rem; }
.post__date {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--faint);
}
.post__title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 2.9rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0.5rem 0 0;
  color: var(--text);
}
.backlink {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-block;
  margin-bottom: 2rem;
}
.backlink:hover { color: var(--accent); }

/* ---------- contact form ---------- */
.contact-grid { display: grid; gap: 2.5rem; grid-template-columns: 1fr; }
.field { margin-bottom: 1.25rem; }
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 0.73rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.field input,
.field textarea {
  width: 100%;
  font-family: var(--body);
  font-size: 1rem;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field textarea { min-height: 9rem; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: var(--faint); }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91,75,232,0.16);
}
.btn {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  font-weight: 600;
  background: var(--grad);
  border: none;
  border-radius: 10px;
  padding: 0.85rem 1.7rem;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, filter .15s ease;
  box-shadow: 0 6px 22px -6px rgba(79,70,229,0.5);
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.05); box-shadow: 0 10px 28px -6px rgba(79,70,229,0.55); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.form-note { margin-top: 1rem; font-size: 0.92rem; min-height: 1.4rem; }
.form-note--ok { color: #0f9d6e; }
.form-note--err { color: #e11d48; }

/* ---------- footer ---------- */
.foot {
  border-top: 1px solid var(--border);
  padding-block: 2.25rem;
  margin-top: 1.5rem;
}
.foot__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--faint);
}
.foot a { color: var(--muted); }
.foot a:hover { color: var(--accent); }
.foot__links { display: flex; gap: 1.3rem; }

/* ---------- keyframes ---------- */
@keyframes shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.82); }
}

/* ---------- responsive ---------- */
@media (max-width: 34rem) {
  .entry, .skill-row { grid-template-columns: 1fr; gap: 0.4rem; }
  .entry__period { padding-top: 0; }
  .entry__period::before { display: none; }
  .nav { gap: 1.2rem; }
}

/* ---------- a11y ---------- */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}