/* ============================================================
   PRATHMESH AGHAO — PORTFOLIO
   Design tokens: deep charcoal-navy base, teal + amber duotone glow,
   monospace "ledger" accents. Signature element: the chained block —
   used for projects and the experience timeline, echoing how a
   blockchain actually links records together.
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap");

:root {
  --bg: #0a0d12;
  --bg-elevated: #10141c;
  --bg-elevated-2: #141922;
  --glass: rgba(255, 255, 255, 0.045);
  --glass-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text-primary: #eaf0f6;
  --text-secondary: #b7c1cd;
  --text-muted: #7c8798;

  --teal: #4fe3c1;
  --teal-dim: rgba(79, 227, 193, 0.35);
  --teal-glow: rgba(79, 227, 193, 0.18);
  --amber: #f2b84b;
  --amber-dim: rgba(242, 184, 75, 0.35);

  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --container: 1120px;
  --radius: 14px;
  --radius-sm: 8px;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

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

/* Ambient background grid + glow */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(
      ellipse 800px 500px at 15% -10%,
      var(--teal-glow),
      transparent 60%
    ),
    radial-gradient(
      ellipse 700px 500px at 90% 10%,
      rgba(242, 184, 75, 0.1),
      transparent 60%
    ),
    var(--bg);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(
    ellipse 1000px 700px at 50% 0%,
    black 40%,
    transparent 90%
  );
}

a {
  color: inherit;
  text-decoration: none;
}
ul {
  list-style: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 8px var(--teal);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.section {
  padding: 96px 0;
  position: relative;
}
.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 12px;
}
.section-sub {
  color: var(--text-muted);
  font-size: 16px;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 13, 18, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-logo .dot {
  color: var(--amber);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition:
    color 0.2s,
    background 0.2s;
  letter-spacing: 0.02em;
}
.nav-links a:hover {
  color: var(--text-primary);
  background: var(--glass);
}
.nav-links a.active {
  color: var(--teal);
  background: var(--teal-glow);
}
.nav-cta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--bg);
  background: var(--teal);
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition:
    filter 0.2s,
    transform 0.2s;
}
.nav-cta:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}
.nav-toggle {
  display: none;
}

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font-mono);
  font-size: 13.5px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
  background: var(--glass);
}
.btn:hover {
  border-color: var(--teal-dim);
  background: var(--glass-strong);
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--teal);
  color: var(--bg);
  border-color: var(--teal);
  font-weight: 500;
}
.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 24px var(--teal-glow);
}

/* ---------- Hero ---------- */
.hero {
  padding: 168px 0 100px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}
.hero-name {
  font-size: clamp(40px, 6vw, 68px);
  line-height: 1.03;
  margin-bottom: 18px;
}
.hero-name .accent {
  color: var(--teal);
}
.hero-role {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 30px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.terminal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.terminal-head {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated-2);
}
.terminal-head span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3a4150;
}
.terminal-head .label {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}
.terminal-body {
  padding: 20px 18px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  min-height: 210px;
}
.terminal-body .line {
  color: var(--text-secondary);
  margin-bottom: 10px;
}
.terminal-body .prompt {
  color: var(--teal);
}
.terminal-body .out {
  color: var(--text-muted);
}
.terminal-body .cursor {
  display: inline-block;
  width: 7px;
  height: 15px;
  background: var(--teal);
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* ---------- Stat bar ---------- */
.stat-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 64px;
}
.stat {
  background: var(--bg-elevated);
  padding: 26px 22px;
  text-align: left;
}
.stat-num {
  font-family: var(--font-mono);
  font-size: 28px;
  color: var(--teal);
  font-weight: 500;
}
.stat-label {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: 0.02em;
}

/* ---------- Skills ---------- */
.skill-groups {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.skill-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition:
    border-color 0.25s,
    transform 0.25s;
}
.skill-card:hover {
  border-color: var(--teal-dim);
  transform: translateY(-3px);
}
.skill-card h4 {
  font-size: 14px;
  margin-bottom: 12px;
  color: var(--teal);
  font-family: var(--font-mono);
  font-weight: 500;
}
.skill-card ul li {
  font-size: 13.5px;
  color: var(--text-secondary);
  padding: 4px 0;
}

/* ---------- Chained blocks (signature component) ---------- */
.chain {
  position: relative;
}
.chain::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--teal-dim), var(--border) 90%);
}
.block {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  margin-bottom: 28px;
}
.block-node {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--teal);
  z-index: 1;
  box-shadow: 0 0 0 6px var(--bg);
}
.block-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 26px;
  transition:
    border-color 0.25s,
    transform 0.25s,
    background 0.25s;
}
.block-card:hover {
  border-color: var(--teal-dim);
  background: var(--glass-strong);
}
.block-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 18px;
  background: var(--bg-elevated);
}
.block-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.block-card:hover .block-thumb img {
  transform: scale(1.04);
}
.block-hash {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}
.block-hash .amber {
  color: var(--amber);
}
.block-title {
  font-size: 20px;
  margin-bottom: 8px;
}
.block-desc {
  color: var(--text-secondary);
  font-size: 14.5px;
  margin-bottom: 16px;
}
.block-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 5px 10px;
  border-radius: 6px;
  background: rgba(79, 227, 193, 0.08);
  color: var(--teal);
  border: 1px solid var(--teal-dim);
}
.block-links {
  display: flex;
  gap: 18px;
}
.block-links a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}
.block-links a:hover {
  color: var(--teal);
}
.block-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}
/* ---------- Grid variant of chain (compact project cards, 3 per row) ---------- */
.chain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.chain-grid::before {
  display: none;
}
.chain-grid .block {
  display: block;
  margin-bottom: 0;
  position: relative;
}
.chain-grid .block-node {
  position: absolute;
  top: -14px;
  left: 18px;
  width: 32px;
  height: 32px;
  font-size: 10px;
  border-radius: 9px;
  box-shadow: 0 0 0 4px var(--bg);
}
.chain-grid .block-card {
  padding: 24px 18px 18px;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.chain-grid .block-thumb {
  aspect-ratio: 16 / 10;
  margin-bottom: 14px;
}
.chain-grid .block-hash {
  font-size: 10.5px;
  margin-bottom: 6px;
}
.chain-grid .block-title {
  font-size: 17px;
  margin-bottom: 6px;
}
.chain-grid .block-desc {
  font-size: 13px;
  margin-bottom: 12px;
  flex: 1;
}
.chain-grid .block-tags {
  gap: 6px;
  margin-bottom: 12px;
}
.chain-grid .block-tags .tag {
  font-size: 10.5px;
  padding: 4px 8px;
}
.chain-grid .block-links {
  gap: 14px;
}
.chain-grid .block-links a {
  font-size: 11.5px;
}

@media (max-width: 980px) {
  .chain-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .chain-grid {
    grid-template-columns: 1fr;
  }
}
/* ---------- Timeline (about page reuse of chain) ---------- */
.timeline-role {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--amber);
  margin-bottom: 6px;
}
.timeline-list {
  list-style: none;
  margin-top: 12px;
}
.timeline-list li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 5px 0 5px 18px;
  position: relative;
}
.timeline-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--teal);
}

/* ---------- About page ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}
.about-photo {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg-elevated);
}
.about-photo img {
  width: 100%;
}
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
  margin-top: 28px;
}
.info-item {
  border-left: 2px solid var(--border);
  padding-left: 12px;
}
.info-item .k {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.info-item .v {
  font-size: 14.5px;
  color: var(--text-primary);
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition:
    border-color 0.2s,
    transform 0.2s;
}
.contact-card:hover {
  border-color: var(--teal-dim);
  transform: translateX(4px);
}
.contact-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--teal-glow);
  color: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  flex-shrink: 0;
  overflow: hidden;
}
.contact-icon img {
  width: 20px;
  height: 20px;
  object-fit: contain;
  filter: brightness(0) saturate(100%) invert(78%) sepia(44%) saturate(429%)
    hue-rotate(110deg) brightness(97%) contrast(90%);
}
.contact-card .k {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.contact-card .v {
  font-size: 14.5px;
  color: var(--text-primary);
  margin-top: 2px;
}

.form-field {
  margin-bottom: 18px;
}
.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.form-field input,
.form-field textarea {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  resize: vertical;
  transition: border-color 0.2s;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px var(--teal-glow);
}
.social-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}
.social-row a {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.social-row a:hover {
  border-color: var(--teal-dim);
  color: var(--teal);
  transform: translateY(-2px);
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: 60px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-inner p {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
  margin-top: 20px;
}
.cta-band h2 {
  font-size: clamp(24px, 3vw, 32px);
  margin-bottom: 12px;
}
.cta-band p {
  color: var(--text-muted);
  margin-bottom: 24px;
}
.cta-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Focus visibility ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .stat-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .skill-groups {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    top: 63px;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border-bottom: 1px solid var(--border);
    display: none;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    padding: 12px 14px;
  }
  .nav-toggle {
    display: block;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-family: var(--font-mono);
  }
  .nav-cta {
    display: none;
  }
  .section {
    padding: 64px 0;
  }
  .hero {
    padding: 130px 0 60px;
  }
  .stat-bar {
    grid-template-columns: 1fr 1fr;
  }
  .skill-groups {
    grid-template-columns: 1fr;
  }
  .block {
    grid-template-columns: 44px 1fr;
    gap: 16px;
  }
  .block-node {
    width: 44px;
    height: 44px;
    font-size: 10px;
  }
  .chain::before {
    left: 21px;
  }
}