/* =========================
   Jainethin Portfolio v3
   Roadmap Journey Theme
   Vanilla HTML/CSS/JS
   ========================= */

/* --- Reset / Base --- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
  position: relative;
  overflow-x: hidden;
  scrollbar-color: color-mix(in srgb, var(--accent2) 60%, var(--bg)) color-mix(in srgb, var(--bg) 80%, transparent);
  scrollbar-width: thin;
}
img, svg { display: block; }
a { color: inherit; text-decoration: none; }
strong { font-weight: 650; }

/* --- Theme tokens --- */
:root {
  --bg: #0b1020;
  --bg2: #0e1733;
  --card: rgba(255,255,255,0.06);
  --card2: rgba(255,255,255,0.085);
  --border: rgba(255,255,255,0.13);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.70);
  --muted2: rgba(255,255,255,0.55);
  --accent: #66d9ff;
  --accent2: #a78bfa;
  --good: #34d399;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --radius: 18px;
  --radius-sm: 14px;
  --container: 1100px;
  --gap: 18px;
}

html[data-theme="light"] {
  --bg: #f7f8fb;
  --bg2: #eef2ff;
  --card: rgba(9, 12, 20, 0.04);
  --card2: rgba(9, 12, 20, 0.06);
  --border: rgba(9, 12, 20, 0.10);
  --text: rgba(9, 12, 20, 0.92);
  --muted: rgba(9, 12, 20, 0.70);
  --muted2: rgba(9, 12, 20, 0.55);
  --shadow: 0 12px 35px rgba(20, 25, 40, 0.12);
}

/* --- Background graphics (no external images) --- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(600px 300px at 18% 12%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 60%),
    radial-gradient(560px 260px at 82% 10%, color-mix(in srgb, var(--accent2) 16%, transparent), transparent 62%),
    radial-gradient(520px 240px at 70% 70%, rgba(255,255,255,0.06), transparent 68%),
    radial-gradient(circle at 20% 70%, rgba(255,255,255,0.05), transparent 55%),
    radial-gradient(circle at 85% 55%, rgba(255,255,255,0.05), transparent 55%);
  opacity: 1;
  z-index: 0;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  /* Noise overlay (SVG data URI) */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  opacity: 0.06;
  z-index: 0;
}
html[data-theme="light"] body::after { opacity: 0.06; }
html[data-theme="light"] body::before { opacity: 0.98; }
html[data-theme="light"] .bg-grid { opacity: 0.16; }
html[data-theme="light"] .cursor-glow { opacity: 0.55; }

/* Dotted grid */
.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image: radial-gradient(color-mix(in srgb, var(--text) 16%, transparent) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(70% 50% at 50% 0%, #000 40%, transparent 85%);
  z-index: 0;
}

/* Custom scrollbar (WebKit) */
::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track { background: color-mix(in srgb, var(--bg) 75%, transparent); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 85%, transparent), color-mix(in srgb, var(--accent2) 85%, transparent));
  border-radius: 999px;
  border: 3px solid color-mix(in srgb, var(--bg) 85%, transparent);
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--accent), var(--accent2));
}

/* Accessibility helpers */
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute;
  left: 12px; top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--card2);
  border: 1px solid var(--border);
  transform: translateY(-140%);
  transition: transform 200ms ease;
  z-index: 9999;
}
.skip-link:focus { transform: translateY(0); }


/* Apply stick cursor broadly on content and interactive UI (keep text inputs editable) */
html, body, .brand, .nav-links a, .magnetic, .btn, a, button, .project-card, h1, h2, h3, p, li, span { cursor: var(--cursor-stick); }
input, textarea, select { cursor: text; }  /* preserve native text cursor when editing */

/* Scroll progress */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 1000;
  background: transparent;
}
.scroll-progress-bar {
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent2) 55%, transparent);
}

/* Cursor glow */
.cursor-glow {
  position: fixed;
  width: 440px; height: 440px;
  border-radius: 50%;
  left: 0; top: 0;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at center,
    color-mix(in srgb, var(--accent) 18%, transparent),
    transparent 60%);
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  filter: saturate(110%);
  transition: opacity 180ms ease;
  will-change: transform, opacity;
}
html[data-theme="light"] .cursor-glow {
  background: radial-gradient(circle at center,
    color-mix(in srgb, var(--accent2) 14%, transparent),
    transparent 62%);
  opacity: 0;
}

/* Sparkles layer */
.sparkles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

/* Ensure content sits above background layers */
.site-header, main, footer, .toast { position: relative; z-index: 1; }

/* Layout */
.container {
  width: min(var(--container), calc(100% - 32px));
  margin-inline: auto;
}
.section {
  padding: 76px 0;
  position: relative;
}
.section.alt {
  background: linear-gradient(180deg, transparent 0%, var(--bg2) 40%, transparent 100%);
}
.section::after {
  /* soft divider line */
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--border) 70%, transparent), transparent);
  opacity: 0.9;
}
.center { display: flex; justify-content: center; margin-top: 26px; }

/* Roadmap step numbers */
h2[data-step]::before {
  content: attr(data-step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 30px;
  margin-right: 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 75%, transparent);
  color: var(--muted2);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.1em;
  vertical-align: middle;
  transform: translateY(-2px);
}

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
}
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark {
  font-weight: 900;
  letter-spacing: 0.5px;
}
.brand-dot {
  width: 8px; height: 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent) 65%, transparent);
}

.nav-links {
  display: flex;
  gap: 18px;
  align-items: center;
}
.nav-links a {
  font-weight: 700;
  color: var(--muted);
  position: relative;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -10px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  box-shadow: 0 0 16px color-mix(in srgb, var(--accent2) 45%, transparent);
}

.nav-toggle,
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
  gap: 8px;
  color: var(--muted);
  transition: transform 140ms ease, background 140ms ease;
}
.nav-toggle:hover,
.theme-toggle:hover { background: var(--card2); color: var(--text); transform: translateY(-1px); }
.nav-toggle:active,
.theme-toggle:active { transform: translateY(0); }

.nav-toggle { display: none; }
.nav-toggle-bars {
  width: 18px; height: 12px;
  position: relative;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after,
.nav-toggle-bars span {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}
.nav-toggle-bars::before { top: 0; }
.nav-toggle-bars::after { bottom: 0; }
.nav-toggle-bars span { top: 5px; }

.theme-icon {
  width: 14px; height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent2) 50%, transparent);
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}
.theme-text { font-weight: 750; font-size: 14px; }

/* Visual state for theme toggle */
.theme-toggle.is-light .theme-icon {
  background: linear-gradient(135deg, #ffd166, #ffdf6e);
  box-shadow: 0 0 12px rgba(255, 210, 100, 0.35);
}
.theme-toggle.is-light { color: var(--text); }

/* When theme toggle is inside mobile menu it gets full-width visuals */
.theme-toggle.in-menu { width: 100%; justify-content: flex-start; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--accent) 40%, transparent),
    color-mix(in srgb, var(--accent2) 35%, transparent));
  color: var(--text);
  box-shadow: var(--shadow);
  font-weight: 800;
  transition: transform 150ms ease, filter 150ms ease;
  position: relative;
  overflow: hidden;
}
.btn:hover { transform: translateY(-2px); filter: brightness(1.05); }
.btn:active { transform: translateY(0); }
.btn-ghost { background: var(--card); box-shadow: none; }
.btn-ghost:hover { background: var(--card2); }
.btn-sm { padding: 9px 12px; border-radius: 12px; font-weight: 800; }

/* Click ripple (CSS only) */
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%),
    rgba(255,255,255,0.18),
    transparent 60%);
  opacity: 0;
  transition: opacity 180ms ease;
}
.btn:hover::after { opacity: 0.55; }

/* Hero */
.hero {
  padding: 80px 0 46px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: -140px -140px auto -140px;
  height: 560px;
  background:
    radial-gradient(650px 320px at 18% 22%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 60%),
    radial-gradient(620px 300px at 84% 14%, color-mix(in srgb, var(--accent2) 20%, transparent), transparent 60%),
    radial-gradient(520px 240px at 62% 66%, rgba(255,255,255,0.06), transparent 72%);
  pointer-events: none;
  animation: drift 10s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); filter: blur(0px); }
  to { transform: translate3d(0, 10px, 0) scale(1.02); filter: blur(0.3px); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 28px;
  align-items: start;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: var(--card);
  font-weight: 750;
  width: fit-content;
}
.pulse-dot {
  width: 10px; height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent2) 45%, transparent);
  animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.1); opacity: 1; }
}

h1 {
  margin: 14px 0 10px;
  font-size: clamp(34px, 4.2vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.accent {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.subtitle {
  margin: 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 16.5px;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}
.hero-meta {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}
.meta-item {
  padding: 12px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
}

.social {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.icon-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--muted);
  font-weight: 750;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}
.icon-link:hover { background: var(--card2); color: var(--text); transform: translateY(-2px); }
.icon-link svg { width: 18px; height: 18px; fill: currentColor; opacity: 0.9; }

.hero-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card2), var(--card));
  box-shadow: var(--shadow);
  padding: 18px;
}

.card-head { display: grid; gap: 4px; }
.card-title { margin: 0; font-weight: 900; letter-spacing: 0.02em; }
.card-subtitle { margin: 0; color: var(--muted); font-size: 13.5px; }

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.stat {
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
  padding: 12px;
  transition: transform 160ms ease, background 160ms ease;
}
.stat:hover { transform: translateY(-2px); background: var(--card2); }
.stat .value { font-size: 18px; font-weight: 900; }
.stat .label { margin-top: 4px; color: var(--muted); font-size: 13px; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.chip {
  padding: 8px 10px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 750;
  font-size: 13px;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}
.chip:hover { transform: translateY(-2px); background: var(--card2); color: var(--text); }

.note {
  margin-top: 14px;
  padding: 12px;
  border-radius: 16px;
  border: 1px dashed var(--border);
  background: color-mix(in srgb, var(--card) 70%, transparent);
  color: var(--muted);
  font-size: 13.5px;
}
code {
  padding: 2px 6px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
}

.hero-bottom { margin-top: 24px; }
.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 70%, transparent);
}
.hero-pill-label {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 22%, transparent), color-mix(in srgb, var(--accent2) 18%, transparent));
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 11px;
}
.hero-pill-text { color: var(--muted); font-weight: 750; }

/* About / Sections */
h2 {
  margin: 0 0 12px;
  font-size: 28px;
  letter-spacing: -0.01em;
}
.lead { margin: 0; color: var(--muted); max-width: 70ch; }
.bullets { margin: 14px 0 0; padding-left: 18px; color: var(--muted); }
.bullets li { margin: 8px 0; }

.two-col {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 22px;
  align-items: start;
}

.card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 18px;
  position: relative;
}

/* Magnetic hover + cursor spotlight */
.magnetic {
  transform-style: preserve-3d;
  transition: transform 200ms ease, box-shadow 200ms ease, background 200ms ease, border-color 200ms ease;
  will-change: transform;
  position: relative;
  overflow: hidden;
}
.magnetic::before {
  content: "";
  position: absolute;
  inset: -1px;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%),
    color-mix(in srgb, var(--accent) 14%, transparent),
    transparent 60%);
  opacity: 0;
  transition: opacity 180ms ease;
  pointer-events: none;
}
.magnetic:hover::before { opacity: 1; }
.magnetic:hover { border-color: color-mix(in srgb, var(--accent2) 35%, var(--border)); box-shadow: var(--shadow); }

.card-h3 { margin: 0 0 12px; font-size: 18px; letter-spacing: -0.01em; }
.kv { margin: 0; display: grid; grid-template-columns: 1fr; gap: 10px; }
.kv div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card2);
}
.kv dt { color: var(--muted2); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.kv dd { margin: 0; font-weight: 850; }

/* Skills */
.muted { color: var(--muted); margin: 0 0 18px; }
.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.skill-card h3 { margin: 0 0 10px; font-size: 16px; }

/* Journey map */
.journey-map {
  position: relative;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 70%, transparent);
  overflow: hidden;
}
.journey-map::before {
  content: "";
  position: absolute;
  inset: -2px;
  background:
    repeating-linear-gradient(90deg,
      transparent 0 18px,
      color-mix(in srgb, var(--border) 40%, transparent) 18px 19px,
      transparent 19px 36px);
  opacity: 0.25;
  pointer-events: none;
}
.journey-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  align-items: stretch;
  position: relative;
  z-index: 1;
}
.journey-card {
  border-radius: 18px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card2), var(--card));
  padding: 14px;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
  position: relative;
  overflow: hidden;
}
.journey-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.journey-card .t {
  font-weight: 950;
  margin: 0 0 6px;
}
.journey-card .d { margin: 0; color: var(--muted); font-size: 13.5px; }
.journey-icon {
  width: 36px; height: 36px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 30%, transparent), color-mix(in srgb, var(--accent2) 24%, transparent));
  display: grid;
  place-items: center;
  margin-bottom: 10px;
}
.journey-icon svg { width: 18px; height: 18px; fill: var(--text); opacity: 0.95; }

.journey-connector {
  height: 2px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent2) 60%, transparent), transparent);
  margin: 16px 6px 0;
  border-radius: 999px;
}

/* Timeline (Roadmap) */
.timeline { display: grid; gap: 14px; }
.timeline.roadmap { position: relative; }
.timeline.roadmap::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--accent2) 45%, transparent), transparent);
  border-radius: 999px;
  opacity: 0.85;
}
.timeline-item {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 16px 16px 16px 44px;
  position: relative;
  cursor: pointer;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 18px;
  width: 14px; height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent2) 45%, transparent);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}
.timeline-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.timeline-title { font-weight: 950; }
.timeline-meta { color: var(--muted); font-weight: 750; }
.timeline-bullets { margin: 10px 0 0; padding-left: 18px; color: var(--muted); }
.timeline-item .timeline-bullets { max-height: 0; overflow: hidden; margin-top: 0; opacity: 0; transition: max-height 240ms ease, opacity 240ms ease, margin-top 240ms ease; }
.timeline-item.open .timeline-bullets { max-height: 260px; opacity: 1; margin-top: 10px; }
.timeline-item .hint {
  margin-top: 10px;
  color: var(--muted2);
  font-weight: 700;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.timeline-item .hint .chev { transition: transform 200ms ease; }
.timeline-item.open .hint .chev { transform: rotate(180deg); }


/* Project cover (graphics) */
.project-cover{
  --pc1: var(--accent);
  --pc2: var(--accent2);
  height: 58px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--pc1) 30%, transparent),
    color-mix(in srgb, var(--pc2) 24%, transparent));
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 12px;
  position: relative;
  overflow: hidden;
}
.project-cover::before{
  content:"";
  position:absolute;
  inset:-40% -40%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.18), transparent 55%);
  opacity: 0.55;
  transform: translateX(-8%);
  transition: transform 500ms ease;
}
.project-card:hover .project-cover::before { transform: translateX(10%); }

.project-cover .cover-left{
  display:flex;
  align-items:center;
  gap:10px;
  position:relative;
  z-index:1;
}
.project-cover svg{
  width: 22px;
  height: 22px;
  fill: var(--text);
  opacity: 0.95;
}
.cover-tag{
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 35%, transparent);
  font-weight: 900;
  font-size: 12px;
  color: var(--text);
}
.cover-spark{
  width: 10px; height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--pc1), var(--pc2));
  box-shadow: 0 0 14px color-mix(in srgb, var(--pc2) 50%, transparent);
  position:relative;
  z-index:1;
}

/* Projects */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  flex-wrap: wrap;
}
.project-controls input {
  width: min(420px, 100%);
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  outline: none;
}
.project-controls input::placeholder { color: var(--muted2); }
.project-controls input:focus { border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); }

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 18px;
}
.tag-btn {
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  color: var(--muted);
  font-weight: 800;
  font-size: 13px;
  transition: transform 150ms ease, background 150ms ease, color 150ms ease;
}
.tag-btn:hover { background: var(--card2); color: var(--text); transform: translateY(-2px); }
.tag-btn.active {
  color: var(--text);
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 30%, transparent), color-mix(in srgb, var(--accent2) 24%, transparent));
  border-color: color-mix(in srgb, var(--accent2) 45%, var(--border));
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.project-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card2), var(--card));
  padding: 16px;
  display: grid;
  gap: 12px;
}
.project-title { font-weight: 950; }
.project-desc { color: var(--muted); margin: 0; }
.project-links { display: flex; flex-wrap: wrap; gap: 10px; }
.project-links a {
  padding: 9px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  font-weight: 850;
  color: var(--muted);
}
.project-links a:hover { background: var(--card2); color: var(--text); }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 2px; }
.badge {
  padding: 6px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 70%, transparent);
  color: var(--muted);
  font-weight: 750;
  font-size: 12.5px;
}

/* Community */
.list { margin: 0; padding-left: 18px; color: var(--muted); }
.list li { margin: 10px 0; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 22px;
  align-items: start;
}
.contact-cards {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}
.contact-card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 16px;
  padding: 12px;
  display: grid;
  gap: 2px;
}
.contact-card .label {
  color: var(--muted2);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.contact-card .value { font-weight: 900; }
.contact-card .actions {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.contact-card button,
.contact-card a {
  border: 1px solid var(--border);
  background: var(--card2);
  padding: 8px 10px;
  border-radius: 12px;
  cursor: pointer;
  color: var(--muted);
  font-weight: 850;
}
.contact-card button:hover,
.contact-card a:hover { color: var(--text); background: var(--card); }

.form label { display: grid; gap: 8px; margin-top: 12px; }
.form input, .form textarea {
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--card2);
  color: var(--text);
  outline: none;
  resize: vertical;
}
.form input:focus, .form textarea:focus {
  border-color: color-mix(in srgb, var(--accent) 60%, var(--border));
}
.form-note { margin: 12px 0 0; }

/* Contact form layout tweaks */
.form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px;
}
.form input, .form textarea { width: 100%; box-sizing: border-box; }
.form .btn { align-self: flex-end; min-width: 140px; }

/* Make contact cards and form visually consistent */
.contact-card, .form { border-radius: 14px; }

@media (max-width: 880px) {
  .form { padding: 14px; }
  .form .btn { width: 100%; align-self: stretch; }
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 26px 0;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Reveal animations */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity 540ms ease, transform 540ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transition: none; }
  .btn:hover, .icon-link:hover, .chip:hover, .tag-btn:hover { transform: none; }
  .hero-bg { animation: none; }
}

/* Journey rail */
.journey-rail {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 60;
  display: none;
}
.journey-rail-inner {
  border-radius: 18px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(12px);
  padding: 10px;
  display: grid;
  gap: 6px;
  box-shadow: var(--shadow);
}
.journey-step {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px 10px;
  border-radius: 14px;
  color: var(--muted);
  font-weight: 850;
  transition: background 150ms ease, color 150ms ease, transform 150ms ease;
}
.journey-step:hover { background: var(--card); color: var(--text); transform: translateX(-1px); }
.journey-dot {
  width: 10px; height: 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: 0 0 12px rgba(0,0,0,0.2);
}
.journey-label {
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  opacity: 0;
  transition: max-width 200ms ease, opacity 200ms ease;
}
.journey-rail:hover .journey-label { max-width: 160px; opacity: 1; }
.journey-step.active { color: var(--text); background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, transparent), color-mix(in srgb, var(--accent2) 14%, transparent)); }
.journey-step.active .journey-dot {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: color-mix(in srgb, var(--accent2) 55%, var(--border));
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent2) 45%, transparent);
}

/* Next checkpoint */
.next-checkpoint {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  color: var(--muted);
  cursor: pointer;
  transition: transform 150ms ease, background 150ms ease, color 150ms ease;
}
.next-checkpoint:hover { transform: translateY(-2px); background: var(--card2); color: var(--text); }
.nc-arrow {
  width: 28px; height: 28px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 20%, transparent), color-mix(in srgb, var(--accent2) 18%, transparent));
  display: grid; place-items: center;
  font-weight: 950;
}
.nc-label { font-weight: 900; }

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  padding: 10px 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(12px);
  color: var(--text);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  z-index: 80;
  transition: opacity 180ms ease, transform 180ms ease;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }

/* Responsive */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .skill-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .journey-row { grid-template-columns: 1fr; }
}

@media (max-width: 920px) {
  .nav-toggle { display: inline-flex; /* show hamburger */ order: 3; margin-left: auto; }

  /* hide the header theme button on small screens (moved into menu) */
  .theme-toggle { display: none; }

  .nav-links {
    position: absolute;
    right: 16px;
    top: 64px;
    width: min(320px, calc(100% - 32px));
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow);
    display: none;
  }

  /* when the theme button is moved into the menu it needs full-width styling */
  .nav-links .theme-toggle {
    display: inline-flex;
    width: 100%;
    justify-content: flex-start;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--muted);
    font-weight: 750;
  }
  .nav-links .theme-toggle:hover { background: var(--card2); color: var(--text); }

  .nav-links.open { display: grid; gap: 10px; }
  .nav-links a { padding: 10px 12px; border-radius: 12px; }
  .nav-links a:hover { background: var(--card); }
}

/* Phone: reduce vertical spacing and simplify hero */
@media (max-width: 640px) {
  /* reduce gaps between sections */
  .section { padding: 36px 0; }
  .section.alt { padding: 36px 0; }

  /* tighter hero spacing */
  .hero { padding: 48px 0 20px; }
  .hero .hero-grid { gap: 18px; }
  .hero-copy { margin-top: 0; }
  .hero .hero-bottom { margin-top: 10px; }

  /* hide eyebrow metadata in mobile to save space */
  .eyebrow { display: none; }

  /* tighter typography spacing */
  h1 { margin: 8px 0 8px; font-size: clamp(28px, 7.5vw, 40px); }
  .subtitle { margin-bottom: 6px; }

  /* compact footer / CTA */
  .next-checkpoint { right: 12px; bottom: 12px; padding: 8px 10px; }
  .footer { padding: 18px 0; }

  /* ensure container has comfortable side padding on small screens */
  .container { width: calc(100% - 24px); }
}

@media (min-width: 1100px) {
  .journey-rail { display: block; }
}