/* ============================================================
   DEEPAK KUMAR — DATA ENGINEER PORTFOLIO
   Design: "Medallion Pipeline" — bronze/silver/gold data-layer
   metaphor as the literal visual structure, not decoration.
============================================================ */

:root {
  /* Core palette */
  --bg:            #0B1220;
  --bg-panel:      #121B2E;
  --bg-panel-2:    #16213A;
  --line:          rgba(199, 208, 220, 0.10);
  --line-strong:   rgba(199, 208, 220, 0.18);

  /* Accent: warm amber (data flowing through warm light) */
  --amber:         #F2A93B;
  --amber-soft:    rgba(242, 169, 59, 0.14);
  --amber-glow:    rgba(242, 169, 59, 0.35);

  /* Medallion stage colors */
  --bronze:        #C58A4E;
  --silver:        #B7C2D0;
  --gold:          #F2A93B;
  --raw:           #5C6B82;

  /* Success / accent green for "served" data */
  --green:         #34D399;

  /* Text */
  --text:          #E7ECF3;
  --text-mid:      #AEB8C9;
  --text-dim:      #7B8699;

  /* Type */
  --font-display:  'Space Grotesk', sans-serif;
  --font-body:     'Inter', sans-serif;
  --font-mono:     'IBM Plex Mono', monospace;

  --section-py: 7.5rem;
  --container-w: 1140px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

@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);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
}

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

::selection { background: var(--amber); color: var(--bg); }

.section-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.accent { color: var(--amber); }

/* ============================================================
   CUSTOM CURSOR
============================================================ */
.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  will-change: transform;
}
.cursor-dot {
  width: 7px;
  height: 7px;
  background: var(--amber);
  box-shadow: 0 0 8px var(--amber-glow);
}
.cursor-ring {
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--amber);
  opacity: 0.6;
  transition: width 0.2s ease, height 0.2s ease, opacity 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.cursor-ring.is-active {
  width: 48px;
  height: 48px;
  background: var(--amber-soft);
  opacity: 0.9;
}
@media (hover: none), (max-width: 860px) {
  .cursor-dot, .cursor-ring { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .cursor-dot, .cursor-ring { display: none; }
}
body.has-custom-cursor, body.has-custom-cursor a, body.has-custom-cursor button {
  cursor: none;
}

/* ============================================================
   MOBILE NAV RESUME LINK
============================================================ */
.nav-mobile-cta {
  margin-top: 0.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
  background: var(--amber);
  color: #1A1304 !important;
  border-radius: 6px;
  font-weight: 600;
  border-bottom: none !important;
  padding: 0.7rem 0 !important;
}

/* ============================================================
   SCROLL PROGRESS RAIL
============================================================ */
.pipeline-rail {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  z-index: 1000;
}
.pipeline-rail-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--bronze), var(--silver), var(--gold));
  transition: width 0.1s linear;
}

/* ============================================================
   NAV
============================================================ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  background: rgba(11, 18, 32, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s ease;
}
.nav-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}
.nav-mark-dot { color: var(--amber); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-mid);
  transition: color 0.2s ease;
  position: relative;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--amber);
  color: #1A1304;
  padding: 0.5rem 1.1rem;
  border-radius: 6px;
  font-weight: 600;
}
.nav-links a.nav-cta:hover { background: #ffc266; color: #1A1304; }

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px; height: 32px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: 0.25s ease;
}
.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--bg-panel);
  border-top: 1px solid var(--line);
  padding: 0.5rem 1.5rem 1rem;
}
.nav-mobile a {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--text-mid);
}
.nav-mobile.open { display: flex; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-burger { display: flex; }
}

/* ============================================================
   HERO — SPLIT LAYOUT (friend-style)
============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding-top: 80px; /* nav height */
}
#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  flex: 1;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
  width: 100%;
}
.hero-split {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 2rem;
  align-items: center;
}
/* LEFT */
.hero-left { display: flex; flex-direction: column; gap: 1.4rem; }
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--amber);
  letter-spacing: 0.06em;
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.hero-typed-line {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  color: var(--text-mid);
  min-height: 2.8em;
}
.hero-desc {
  font-size: 1rem;
  color: var(--text-mid);
  line-height: 1.7;
  max-width: 520px;
}
.hl-cyan  { color: #22d3ee; font-weight: 600; }
.hl-amber { color: var(--amber); font-weight: 600; }
.hl-green { color: var(--green); font-weight: 600; }

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-resume-row { margin-top: -0.4rem; }
.hero-resume-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  border: 1px solid var(--line-strong);
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  transition: color 0.2s, border-color 0.2s;
}
.hero-resume-btn:hover { color: var(--amber); border-color: var(--amber-glow); }

.hero-socials {
  display: flex;
  gap: 0.7rem;
  margin-top: 0.4rem;
}
.hero-socials a {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-mid);
  font-size: 0.95rem;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.hero-socials a:hover { color: var(--amber); border-color: var(--amber); background: var(--amber-soft); }

/* RIGHT — orbit */
.hero-right {
  display: flex;
  align-items: center;
  justify-content: center;
}
.orbit-wrap {
  position: relative;
  width: 340px; height: 340px;
}
.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(34,211,238,0.18);
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
}
.orbit-ring-1 { width: 200px; height: 200px; animation: orbitSpin 18s linear infinite; }
.orbit-ring-2 { width: 320px; height: 320px; animation: orbitSpin 30s linear infinite reverse; border-color: rgba(242,169,59,0.12); }
@keyframes orbitSpin { to { transform: translate(-50%,-50%) rotate(360deg); } }

.orbit-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 80px; height: 80px;
  border-radius: 50%;
  background: var(--bg-panel);
  border: 2px solid rgba(34,211,238,0.4);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 0.2rem;
  box-shadow: 0 0 30px -5px rgba(34,211,238,0.25);
}
.orbit-center i { color: #22d3ee; font-size: 1.2rem; }
.orbit-center span { font-family: var(--font-mono); font-size: 0.6rem; color: #22d3ee; }

/* orbit nodes — positioned around the rings */
.orbit-node {
  position: absolute;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--bg-panel-2);
  border: 1.5px solid rgba(34,211,238,0.35);
  display: flex; align-items: center; justify-content: center;
  top: 50%; left: 50%;
}
.orbit-node span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  color: #22d3ee;
}
/* inner ring nodes (r=100) */
.on1 { transform: translate(-50%,-50%) translate(0px, -100px); }
.on3 { transform: translate(-50%,-50%) translate(87px,  50px); }
.on5 { transform: translate(-50%,-50%) translate(-87px, 50px); }
/* outer ring nodes (r=160) */
.on2 { transform: translate(-50%,-50%) translate(-160px, 0px); border-color: rgba(242,169,59,0.4); }
.on2 span { color: var(--amber); }
.on4 { transform: translate(-50%,-50%) translate(0px, 160px); border-color: rgba(242,169,59,0.4); }
.on4 span { color: var(--amber); }
.on6 { transform: translate(-50%,-50%) translate(113px, -113px); }

/* STATS BAR at bottom of hero */
.hero-stats-bar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  border-top: 1px solid var(--line);
  background: rgba(11,18,32,0.6);
  backdrop-filter: blur(8px);
  padding: 1.8rem 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.hstat-div { width: 1px; height: 36px; background: var(--line-strong); flex-shrink: 0; }
.hero-stat { display: flex; flex-direction: column; align-items: center; gap: 0.2rem; padding: 0 1.5rem; }
.hero-stat-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--amber);
  line-height: 1;
}
.hero-stat-unit { font-size: 1rem; font-weight: 600; opacity: 0.8; }
.hero-stat-label { font-size: 0.72rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.6rem;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-amber { background: var(--amber); color: #1A1304; }
.btn-amber:hover { background: #ffc266; }
.btn-ghost { background: transparent; border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }
.btn-full { width: 100%; justify-content: center; }

/* TYPED */
.typed-wrap { display: inline; }
.typed-cursor {
  display: inline-block;
  color: var(--amber);
  animation: blink 0.8s step-end infinite;
  margin-left: 1px;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

@media (max-width: 900px) {
  .hero-split { grid-template-columns: 1fr; }
  .hero-right { display: none; }
  .hero { min-height: auto; padding-bottom: 0; }
}
@media (max-width: 600px) {
  .hero-stats-bar { gap: 0.6rem; }
  .hstat-div { display: none; }
  .hero-stat { padding: 0 0.6rem; }
  .hero-stat-num { font-size: 1.3rem; }
}

/* ============================================================
   SECTIONS — SHARED
============================================================ */
.section { padding: var(--section-py) 0; }
.section-alt { background: var(--bg-panel); }

.stage-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--amber);
  margin-bottom: 0.9rem;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  margin-bottom: 2.6rem;
  max-width: 720px;
  line-height: 1.3;
}
.section-sub {
  color: var(--text-mid);
  max-width: 560px;
  margin-top: -1.6rem;
  margin-bottom: 2.6rem;
}

/* ============================================================
   TYPED HERO TAGLINE
============================================================ */
.typed-wrap {
  display: inline-block;
  color: var(--text-mid);
  font-weight: 500;
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
}
.typed-cursor {
  display: inline-block;
  color: var(--amber);
  animation: blink 0.8s step-end infinite;
  margin-left: 2px;
  font-weight: 300;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ============================================================
   ABOUT STATS BAR
============================================================ */
.about-stats-bar {
  background: var(--bg-panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0;
}
.asb-inner {
  display: flex;
  align-items: stretch;
  justify-content: center;
}
.asb-stat {
  flex: 1;
  max-width: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2.4rem 1.5rem;
  text-align: center;
  position: relative;
}
.asb-divider {
  width: 1px;
  background: var(--line-strong);
  align-self: stretch;
  margin: 1.2rem 0;
}
.asb-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--amber);
  line-height: 1;
  display: block;
  margin-bottom: 0.55rem;
}
.asb-unit {
  font-size: 1.5rem;
  font-weight: 600;
  opacity: 0.85;
}
.asb-label {
  font-size: 0.82rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
@media (max-width: 600px) {
  .asb-inner { flex-direction: column; }
  .asb-divider { width: 60%; height: 1px; align-self: center; margin: 0; }
  .asb-stat { padding: 1.6rem 1rem; max-width: none; }
}

/* ============================================================
   ABOUT
============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3.5rem;
  align-items: start;
}
.about-text p {
  color: var(--text-mid);
  margin-bottom: 1.1rem;
  font-size: 1.02rem;
}
.about-text strong { color: var(--text); }
.about-text em { color: var(--amber); font-style: normal; }

.about-facts {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.7rem;
}
.fact-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}
.fact-row:last-of-type { border-bottom: none; }
.fact-k { color: var(--text-dim); }
.fact-v { color: var(--text); font-weight: 500; text-align: right; }
.fact-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.2rem;
  color: var(--amber);
  font-weight: 600;
  font-size: 0.92rem;
  transition: gap 0.2s ease;
}
.fact-cta:hover { gap: 0.8rem; }

@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   STACK / SKILLS
============================================================ */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.stack-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.6rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.stack-card:hover { border-color: var(--amber-glow); transform: translateY(-3px); }
.stack-card-head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
}
.stack-card-head i { color: var(--amber); font-size: 1.1rem; }
.stack-card-head h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}
.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.stack-tags li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--bg-panel-2);
  border: 1px solid var(--line);
  color: var(--text-mid);
  padding: 0.35rem 0.65rem;
  border-radius: 5px;
}
@media (max-width: 860px) {
  .stack-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .stack-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   EXPERIENCE / TIMELINE
============================================================ */
.timeline {
  position: relative;
  padding-left: 2.2rem;
  border-left: 2px solid var(--line-strong);
}
.timeline-item {
  position: relative;
  padding-bottom: 3rem;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -2.2rem;
  top: 0.25rem;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px var(--bg), 0 0 14px var(--amber-glow);
}
.timeline-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.3rem;
}
.timeline-head h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
}
.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--amber);
  white-space: nowrap;
}
.timeline-org {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 1rem;
}
.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 1.2rem;
}
.timeline-list li {
  position: relative;
  padding-left: 1.2rem;
  color: var(--text-mid);
  font-size: 0.95rem;
}
.timeline-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--bronze);
}
.timeline-list strong { color: var(--text); }
.timeline-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.timeline-tags span {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  background: var(--amber-soft);
  color: var(--amber);
  padding: 0.3rem 0.6rem;
  border-radius: 5px;
}

/* ============================================================
   PROJECTS — NEW BLOCK LAYOUT
============================================================ */
.proj-block {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 2.4rem;
  margin-bottom: 2rem;
  transition: border-color 0.2s ease;
}
.proj-block:hover { border-color: var(--line-strong); }

.proj-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.9rem;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.proj-header-left { display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap; }

.proj-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--amber-soft);
  color: var(--amber);
  padding: 0.3rem 0.65rem;
  border-radius: 5px;
}
.proj-tag-company {
  background: rgba(52, 211, 153, 0.12);
  color: var(--green);
}
.proj-date {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-dim);
}
.proj-links { display: flex; gap: 0.6rem; }
.proj-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-mid);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  transition: color 0.2s, border-color 0.2s;
}
.proj-link-btn:hover { color: var(--amber); border-color: var(--amber-glow); }

.proj-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.proj-subtitle {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--amber);
  margin-bottom: 1.4rem;
}

/* WHY BOX */
.proj-why {
  background: rgba(242, 169, 59, 0.06);
  border-left: 3px solid var(--amber);
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.2rem;
  margin-bottom: 1.6rem;
}
.proj-why-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.45rem;
}
.proj-why p {
  font-size: 0.92rem;
  color: var(--text-mid);
  line-height: 1.7;
}
.proj-why strong { color: var(--text); }

/* ARCHITECTURE DIAGRAM */
.arch-diagram {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.6rem;
  margin-bottom: 1.6rem;
  overflow-x: auto;
}
.arch-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.4rem;
}

/* Simple flow (horizontal) */
.arch-flow {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 500px;
  margin-bottom: 1.4rem;
}
.arch-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  min-width: 100px;
  text-align: center;
  flex-shrink: 0;
}
.arch-node-sm { min-width: 80px; }
.arch-node-icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  border: 1.5px solid var(--line-strong);
}
.arch-node-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}
.arch-node-sub {
  font-size: 0.66rem;
  color: var(--text-dim);
  line-height: 1.3;
}

/* node color variants */
.arch-source .arch-node-icon { border-color: var(--raw); color: var(--raw); background: rgba(92,107,130,0.12); }
.arch-stream .arch-node-icon { border-color: #60a5fa; color: #60a5fa; background: rgba(96,165,250,0.1); }
.arch-process .arch-node-icon { border-color: var(--bronze); color: var(--bronze); background: rgba(197,138,78,0.1); }
.arch-store .arch-node-icon { border-color: var(--silver); color: var(--silver); background: rgba(183,194,208,0.1); }
.arch-serve .arch-node-icon { border-color: var(--gold); color: var(--gold); background: var(--amber-soft); }

.arch-arrow {
  display: flex;
  align-items: center;
  flex: 1;
  color: var(--line-strong);
  font-size: 0.7rem;
  min-width: 28px;
  gap: 0;
}
.arch-arrow-line {
  flex: 1;
  height: 1.5px;
  background: var(--line-strong);
}

/* Layered (large) diagram */
.arch-layers {
  display: flex;
  align-items: flex-start;
  gap: 0;
  min-width: 700px;
  margin-bottom: 1.4rem;
}
.arch-layer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  flex: 1;
}
.arch-layer-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.2rem;
}
.arch-layer-nodes {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  width: 100%;
  align-items: center;
}
.arch-layer-arrow {
  display: flex;
  align-items: center;
  padding-top: 2.2rem;
  color: var(--line-strong);
  font-size: 0.75rem;
  flex-shrink: 0;
  padding-left: 2px;
  padding-right: 2px;
}

/* decision row under diagram */
.arch-decision-row {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.arch-decision {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.arch-d-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.arch-d-val {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--amber);
}

/* IMPACT ROW */
.proj-impact {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.4rem;
  padding: 1.2rem;
  background: var(--bg-panel-2);
  border-radius: 10px;
  border: 1px solid var(--line);
}
.impact-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 120px;
  flex: 1;
}
.impact-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--amber);
  line-height: 1;
}
.impact-desc {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.4;
}

/* BULLETS */
.proj-bullets {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.proj-bullets li {
  position: relative;
  padding-left: 1.3rem;
  color: var(--text-mid);
  font-size: 0.93rem;
  line-height: 1.6;
}
.proj-bullets li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.6em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--amber);
  opacity: 0.6;
}
.proj-bullets li strong { color: var(--text); }
.proj-bullets li code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-panel-2);
  color: var(--amber);
  padding: 0.1em 0.4em;
  border-radius: 4px;
}

/* MORE PROJECTS COMING */
.proj-coming {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1.2rem;
  border: 1.5px dashed var(--line-strong);
  border-radius: 14px;
  padding: 2.5rem 2rem;
  background: transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.proj-coming:hover { border-color: var(--amber-glow); background: var(--amber-soft); }
.proj-coming .coming-plus {
  width: 48px; height: 48px;
  border-radius: 12px;
  border: 1.5px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 1.1rem;
}
.proj-coming .coming-title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-mid);
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
}
.proj-coming .coming-desc {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.6;
  max-width: 400px;
  margin: 0 auto;
}
.btn-github-full {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 2.5rem;
  border: 1.5px solid var(--line-strong);
  border-radius: 8px;
  color: var(--text-mid);
  font-size: 0.92rem;
  font-weight: 600;
  background: transparent;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}
.btn-github-full:hover { border-color: var(--amber); color: var(--amber); background: var(--amber-soft); }

@media (max-width: 860px) {
  .projects-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   CERTIFICATIONS
============================================================ */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.2rem;
}
.cert-card {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.5rem 1.1rem;
  text-align: center;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.cert-card:hover { border-color: var(--amber-glow); transform: translateY(-3px); }
.cert-icon {
  font-size: 1.6rem;
  color: var(--amber);
  margin-bottom: 0.8rem;
  display: block;
}
.cert-card h4 {
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  line-height: 1.3;
}
.cert-card p {
  font-size: 0.76rem;
  color: var(--text-dim);
}
@media (max-width: 940px) {
  .certs-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   CONTACT
============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3rem;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.contact-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.2s ease;
}
.contact-row:hover { padding-left: 0.4rem; }
.contact-row-static:hover { padding-left: 0; cursor: default; }
.contact-row i {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: var(--bg);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  flex-shrink: 0;
}
.contact-label {
  display: block;
  font-size: 0.74rem;
  color: var(--text-dim);
}
.contact-value {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.form-row { display: flex; flex-direction: column; gap: 0.4rem; }
.form-row label {
  font-size: 0.82rem;
  color: var(--text-mid);
  font-weight: 500;
}
.form-row input, .form-row textarea {
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0.75rem 0.9rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  resize: vertical;
  transition: border-color 0.2s ease;
}
.form-row input:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--amber);
}
.form-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
}

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   FOOTER
============================================================ */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.84rem;
  color: var(--text-dim);
}
.footer-socials { display: flex; gap: 0.8rem; }
.footer-socials a {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-mid);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer-socials a:hover { color: var(--amber); border-color: var(--amber-glow); }

/* ============================================================
   TO TOP BUTTON
============================================================ */
.to-top {
  position: fixed;
  bottom: 1.8rem;
  right: 1.8rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--amber);
  color: #1A1304;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 800;
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}
.to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }

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

/* ============================================================
   TAG HIGHLIGHTS — primary skills stand out
============================================================ */
.tag-highlight {
  background: var(--amber-soft) !important;
  color: var(--amber) !important;
  border-color: rgba(242,169,59,0.3) !important;
  font-weight: 500;
}

/* ============================================================
   SCROLL-REVEAL TRANSITIONS
   Elements start hidden, fade+slide in when they enter viewport
============================================================ */
.will-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s cubic-bezier(0.22,1,0.36,1),
              transform 0.55s cubic-bezier(0.22,1,0.36,1);
}
.will-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* stagger children inside grids */
.stack-grid .stack-card.will-reveal:nth-child(1) { transition-delay: 0.05s; }
.stack-grid .stack-card.will-reveal:nth-child(2) { transition-delay: 0.12s; }
.stack-grid .stack-card.will-reveal:nth-child(3) { transition-delay: 0.19s; }
.stack-grid .stack-card.will-reveal:nth-child(4) { transition-delay: 0.26s; }
.stack-grid .stack-card.will-reveal:nth-child(5) { transition-delay: 0.33s; }

.certs-grid .cert-card.will-reveal:nth-child(1) { transition-delay: 0.05s; }
.certs-grid .cert-card.will-reveal:nth-child(2) { transition-delay: 0.12s; }
.certs-grid .cert-card.will-reveal:nth-child(3) { transition-delay: 0.19s; }
.certs-grid .cert-card.will-reveal:nth-child(4) { transition-delay: 0.26s; }
.certs-grid .cert-card.will-reveal:nth-child(5) { transition-delay: 0.33s; }

.hero-stats .hero-stat.will-reveal:nth-child(1) { transition-delay: 0.1s; }
.hero-stats .hero-stat.will-reveal:nth-child(2) { transition-delay: 0.2s; }
.hero-stats .hero-stat.will-reveal:nth-child(3) { transition-delay: 0.3s; }
.hero-stats .hero-stat.will-reveal:nth-child(4) { transition-delay: 0.4s; }

.about-stats-bar .asb-stat.will-reveal:nth-child(1) { transition-delay: 0.05s; }
.about-stats-bar .asb-stat.will-reveal:nth-child(3) { transition-delay: 0.15s; }
.about-stats-bar .asb-stat.will-reveal:nth-child(5) { transition-delay: 0.25s; }

/* proj-blocks slide in with bigger stagger */
.proj-block.will-reveal:nth-child(1) { transition-delay: 0.0s; }
.proj-block.will-reveal:nth-child(2) { transition-delay: 0.08s; }
.proj-block.will-reveal:nth-child(3) { transition-delay: 0.16s; }
.proj-block.will-reveal:nth-child(4) { transition-delay: 0.24s; }

/* timeline items */
.timeline-item.will-reveal:nth-child(1) { transition-delay: 0.05s; }
.timeline-item.will-reveal:nth-child(2) { transition-delay: 0.15s; }

/* reduce motion — skip animations */
@media (prefers-reduced-motion: reduce) {
  .will-reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* ============================================================
   ABOUT — photo column
============================================================ */
.about-grid {
  grid-template-columns: 1fr 280px !important;
}
.about-photo-col {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 0.5rem;
}
.about-photo-wrap {
  position: relative;
  width: 240px;
}
.about-photo {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 16px;
  border: 2px solid var(--line-strong);
  display: block;
}
.about-photo-badge {
  position: absolute;
  bottom: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-panel);
  border: 1px solid var(--amber-glow);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  border-radius: 20px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr !important; }
  .about-photo-col { order: -1; }
  .about-photo-wrap { width: 160px; }
}

/* ============================================================
   EXPERIENCE TAGS — hot variant
============================================================ */
.ttag-hot {
  background: var(--amber-soft) !important;
  color: var(--amber) !important;
  font-weight: 600;
}

/* ============================================================
   ABOUT STATS BAR — hide old one now stats are in hero
============================================================ */
.about-stats-bar { display: none; }