/* ==========================================================================
   Lavendra Kumar Rajput — Portfolio
   Apple-inspired design: system type, generous whitespace, frosted nav,
   bento tiles, soft motion. Light by default, dark via prefers-color-scheme.
   ========================================================================== */

:root {
  --bg: #fbfbfd;
  --bg-alt: #f5f5f7;
  --surface: #ffffff;
  --text: #1d1d1f;
  --text-2: #6e6e73;
  --text-3: #86868b;
  --line: rgba(0, 0, 0, .08);
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --link: #0066cc;
  --grad: linear-gradient(90deg, #0071e3 0%, #7b61ff 50%, #e0457b 100%);
  --dark: #000;
  --dark-2: #161617;
  --dark-text: #f5f5f7;
  --dark-text-2: #a1a1a6;
  --radius: 28px;
  --radius-sm: 18px;
  --shadow: 0 2px 8px rgba(0,0,0,.04), 0 12px 40px rgba(0,0,0,.06);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --nav-h: 52px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000;
    --bg-alt: #0b0b0c;
    --surface: #161617;
    --text: #f5f5f7;
    --text-2: #a1a1a6;
    --text-3: #86868b;
    --line: rgba(255, 255, 255, .1);
    --link: #2997ff;
    --accent: #0a84ff;
    --accent-hover: #409cff;
    --dark: #0b0b0c;
    --dark-2: #1c1c1e;
    --shadow: 0 0 0 1px rgba(255,255,255,.06);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text); font-family: var(--font);
  font-size: 17px; line-height: 1.47; letter-spacing: -.022em;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
[hidden] { display: none !important; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -.03em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 8px; }

.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--surface); padding: 8px 14px; border-radius: 10px; }
.skip:focus { left: 8px; }

.container { width: min(1080px, 100% - 44px); margin-inline: auto; }
.center { text-align: center; margin-top: 44px; }
.muted { color: var(--text-3); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Buttons & links ---------- */
.pill {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--accent); color: #fff; font-size: 17px; font-weight: 500; letter-spacing: -.01em;
  padding: 12px 22px; border-radius: 980px; transition: background .2s, transform .2s var(--ease);
}
.pill:hover { background: var(--accent-hover); text-decoration: none; }
.pill:active { transform: scale(.97); }
.pill svg { width: 16px; height: 16px; }
.pill-sm { font-size: 12px; padding: 5px 12px; }
.pill-block { width: 100%; padding: 14px 22px; }
.link-arrow { display: inline-flex; align-items: center; gap: 2px; font-size: 17px; color: var(--link); }
.link-arrow svg { width: 17px; height: 17px; transition: transform .2s var(--ease); }
.link-arrow:hover svg { transform: translateX(3px); }

/* ---------- Navigation (frosted glass) ---------- */
.nav {
  position: fixed; inset: 0 0 auto; height: var(--nav-h); z-index: 50;
  background: rgba(251, 251, 253, .72);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent; transition: border-color .3s, background .3s;
}
.nav.scrolled { border-bottom-color: var(--line); }
@media (prefers-color-scheme: dark) { .nav { background: rgba(22, 22, 23, .72); } }
.nav-inner { height: 100%; width: min(1080px, 100% - 44px); margin: auto; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 9px; color: var(--text); font-weight: 600; font-size: 15px; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 26px; height: 26px; border-radius: 8px; background: var(--text); color: var(--bg); display: grid; place-items: center; font-size: 11px; font-weight: 700; letter-spacing: 0; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { color: var(--text); opacity: .8; font-size: 12.5px; letter-spacing: -.01em; transition: opacity .2s; }
.nav-links a:hover, .nav-links a.active { opacity: 1; text-decoration: none; }
.nav-links a.active { color: var(--accent); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.menu-btn { display: none; width: 34px; height: 34px; place-items: center; border-radius: 50%; }
.menu-btn svg { width: 20px; height: 20px; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: calc(var(--nav-h) + 96px) 0 120px; text-align: center; }
.hero-glow {
  position: absolute; inset: -20% -10% auto; height: 620px; pointer-events: none; opacity: .55;
  background:
    radial-gradient(40% 50% at 30% 40%, rgba(0,113,227,.18), transparent 70%),
    radial-gradient(35% 45% at 70% 35%, rgba(123,97,255,.16), transparent 70%),
    radial-gradient(30% 40% at 55% 70%, rgba(224,69,123,.12), transparent 70%);
  filter: blur(20px); animation: drift 18s ease-in-out infinite alternate;
}
@keyframes drift { to { transform: translate3d(0, 30px, 0) scale(1.05); } }
.hero-inner { position: relative; }
.avatar {
  position: relative; width: 128px; height: 128px; margin: 0 auto 28px; border-radius: 50%;
  background: conic-gradient(from 210deg, #0071e3, #7b61ff, #e0457b, #0071e3); padding: 3px;
  box-shadow: 0 20px 50px rgba(0,113,227,.25);
}
.avatar span, .avatar img { width: 100%; height: 100%; border-radius: 50%; }
.avatar span { display: grid; place-items: center; background: var(--bg); font-size: 38px; font-weight: 700; letter-spacing: -.02em; }
.avatar img { position: absolute; inset: 3px; width: calc(100% - 6px); height: calc(100% - 6px); object-fit: cover; }
.eyebrow { font-size: 19px; font-weight: 600; color: var(--text-2); margin-bottom: 14px; letter-spacing: -.01em; }
.hero-title { font-size: clamp(44px, 8vw, 88px); line-height: 1.04; letter-spacing: -.045em; font-weight: 800; }
.hero-sub { max-width: 680px; margin: 26px auto 0; font-size: clamp(19px, 2.2vw, 24px); line-height: 1.38; color: var(--text-2); letter-spacing: -.02em; }
.hero-cta { display: flex; justify-content: center; align-items: center; gap: 30px; margin-top: 38px; flex-wrap: wrap; }

/* ---------- Dark sections ---------- */
.dark { background: var(--dark); color: var(--dark-text); }
.dark .muted { color: var(--dark-text-2); }
.dark .kicker { color: var(--dark-text-2); }

/* ---------- Stats ---------- */
.stats { padding: 88px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-num { font-size: clamp(44px, 6vw, 72px); font-weight: 700; letter-spacing: -.04em; line-height: 1; background: linear-gradient(180deg, #fff 30%, #a1a1a6); -webkit-background-clip: text; background-clip: text; color: transparent; font-variant-numeric: tabular-nums; }
.stat p { margin-top: 12px; color: var(--dark-text-2); font-size: 15px; line-height: 1.35; max-width: 200px; margin-inline: auto; }

/* ---------- Sections ---------- */
.section { padding: 128px 0; }
.section.alt { background: var(--bg-alt); }
.kicker { font-size: 17px; font-weight: 600; color: var(--text-2); margin-bottom: 10px; }
.section-title { font-size: clamp(36px, 5.5vw, 64px); line-height: 1.06; letter-spacing: -.04em; margin-bottom: 64px; }
.lead { font-size: 21px; color: var(--dark-text-2); margin-top: -36px; max-width: 460px; }

/* ---------- Bento ---------- */
.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tile {
  background: var(--surface); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
.tile:hover { transform: translateY(-4px) scale(1.005); box-shadow: 0 4px 12px rgba(0,0,0,.05), 0 24px 60px rgba(0,0,0,.09); }
.tile h3 { font-size: 24px; letter-spacing: -.025em; margin: 18px 0 8px; }
.tile p { color: var(--text-2); font-size: 17px; }
.tile-icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 12px; background: var(--bg-alt); color: var(--accent); }
.tile-icon svg { width: 22px; height: 22px; }
.tile-hero { grid-column: span 3; display: grid; grid-template-columns: 1fr 1.15fr; gap: 40px; align-items: center; padding: 48px; }
.tile-hero h3 { font-size: 40px; letter-spacing: -.035em; }
.tile-hero p { font-size: 19px; }
.dark-tile { background: linear-gradient(145deg, #111114 0%, #1d1d24 100%); color: var(--dark-text); }
.dark-tile p { color: var(--dark-text-2); }
.dark-tile .tile-icon { background: rgba(255,255,255,.08); color: #c5b6ff; }
.tile-stat { display: flex; flex-direction: column; justify-content: center; }
.tile-stat .big { font-size: 96px; font-weight: 800; letter-spacing: -.05em; line-height: 1; }
.tile-stat p { margin-top: 12px; }
.tile-wide { grid-column: span 3; display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; }
.tile-wide > div { max-width: 420px; }
.logo-row { display: flex; flex-wrap: wrap; gap: 10px; max-width: 520px; justify-content: flex-end; }
.logo-row li { padding: 10px 18px; border-radius: 980px; background: var(--bg-alt); font-size: 15px; font-weight: 500; color: var(--text); }

/* Healing code demo */
.heal { background: #0b0b0d; border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius-sm); overflow: hidden; box-shadow: 0 30px 60px rgba(0,0,0,.35); }
.heal-bar { display: flex; align-items: center; gap: 6px; padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,.06); }
.heal-bar i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.heal-bar i:nth-child(2) { background: #febc2e; } .heal-bar i:nth-child(3) { background: #28c840; }
.heal-bar span { margin-left: 10px; font: 12px var(--mono); color: #8e8e93; }
.heal-code { margin: 0; padding: 18px 18px 8px; font: 13px/1.8 var(--mono); color: #e5e5ea; white-space: pre-wrap; word-break: break-word; }
.heal-code .ln { color: #48484a; user-select: none; }
.heal-code .k { color: #ff7ab2; } .heal-code .f { color: #67b7ff; } .heal-code .s { color: #fc6a5d; } .heal-code .s:not(.broken) { color: #9fe08b; }
.heal-code .c { color: #a78bfa; }
.heal-code .broken { text-decoration: line-through; text-decoration-color: rgba(255,90,90,.9); animation: brk 6s infinite; }
.heal-note { animation: note 6s infinite; }
.heal-status { display: flex; align-items: center; gap: 8px; padding: 12px 18px 16px; font: 12px var(--mono); position: relative; }
.heal-status .dot { width: 8px; height: 8px; border-radius: 50%; background: #ff453a; animation: dot 6s infinite; }
.st-fail, .st-ok { position: absolute; left: 34px; transition: opacity .3s; }
.st-fail { color: #ff6961; animation: fail 6s infinite; } .st-ok { color: #30d158; animation: ok 6s infinite; }
@keyframes brk { 0%, 20% { opacity: 1; text-decoration-color: transparent; } 30%, 100% { text-decoration-color: rgba(255,90,90,.9); opacity: .55; } }
@keyframes note { 0%, 30% { opacity: 0; } 40%, 100% { opacity: 1; } }
@keyframes dot { 0%, 55% { background: #ff453a; } 65%, 100% { background: #30d158; } }
@keyframes fail { 0%, 55% { opacity: 1; } 60%, 100% { opacity: 0; } }
@keyframes ok { 0%, 58% { opacity: 0; } 65%, 100% { opacity: 1; } }

/* ---------- Skills (segmented control) ---------- */
.segmented {
  position: relative; display: inline-flex; flex-wrap: wrap; gap: 2px; padding: 4px; border-radius: 980px;
  background: rgba(118,118,128,.12); margin-bottom: 40px; max-width: 100%;
}
.seg-thumb { position: absolute; top: 4px; left: 0; height: calc(100% - 8px); border-radius: 980px; background: var(--surface); box-shadow: 0 3px 8px rgba(0,0,0,.12), 0 1px 1px rgba(0,0,0,.04); transition: transform .45s var(--ease), width .45s var(--ease); z-index: 0; }
.seg-btn { position: relative; z-index: 1; padding: 9px 18px; border-radius: 980px; font-size: 15px; font-weight: 500; color: var(--text-2); white-space: nowrap; transition: color .3s; }
.seg-btn[aria-selected="true"] { color: var(--text); }
.skill-panel { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.skill-card { background: var(--surface); border-radius: var(--radius-sm); padding: 28px; box-shadow: var(--shadow); animation: fadeUp .5s var(--ease) both; }
.skill-card h3 { font-size: 19px; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; letter-spacing: -.02em; }
.skill-card h3 svg { width: 20px; height: 20px; color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font-size: 14px; padding: 6px 12px; border-radius: 980px; background: var(--bg-alt); color: var(--text); border: 1px solid var(--line); }
.section.alt .chip { background: var(--bg); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* ---------- Timeline ---------- */
.timeline { border-top: 1px solid var(--line); }
.job { display: grid; grid-template-columns: 220px 1fr; gap: 32px; padding: 36px 0; border-bottom: 1px solid var(--line); }
.job-when { color: var(--text-3); font-size: 15px; padding-top: 6px; }
.job-when b { display: block; color: var(--text); font-weight: 600; font-size: 17px; margin-bottom: 2px; }
.job h3 { font-size: 26px; letter-spacing: -.025em; }
.job .role { color: var(--text-2); font-size: 19px; margin: 4px 0 16px; }
.job .badge { display: inline-block; margin-left: 10px; vertical-align: middle; font-size: 12px; font-weight: 600; letter-spacing: 0; padding: 4px 10px; border-radius: 980px; background: rgba(48,209,88,.14); color: #1f9d4a; }
@media (prefers-color-scheme: dark) { .job .badge { color: #30d158; } }
.job ul { display: grid; gap: 8px; }
.job li { position: relative; padding-left: 20px; color: var(--text-2); }
.job li::before { content: ""; position: absolute; left: 2px; top: .62em; width: 6px; height: 6px; border-radius: 50%; background: var(--text-3); }
.job li b { color: var(--text); font-weight: 600; }
.job.more ul { display: none; }
.job.more.open ul { display: grid; }
.toggle { margin-top: 4px; color: var(--link); font-size: 15px; display: inline-flex; align-items: center; gap: 2px; }
.toggle svg { width: 16px; height: 16px; transition: transform .3s var(--ease); }
.job.open .toggle svg { transform: rotate(90deg); }

/* ---------- Projects ---------- */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.project { background: var(--surface); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column; transition: transform .5s var(--ease), box-shadow .5s var(--ease); }
.project:hover { transform: translateY(-4px); box-shadow: 0 4px 12px rgba(0,0,0,.05), 0 24px 60px rgba(0,0,0,.09); }
.project-art { height: 150px; display: grid; place-items: center; color: #fff; }
.project-art svg { width: 54px; height: 54px; filter: drop-shadow(0 8px 20px rgba(0,0,0,.25)); }
.project-body { padding: 28px 30px 32px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.project h3 { font-size: 22px; letter-spacing: -.02em; }
.project .tech { font-size: 14px; color: var(--text-3); }
.project p { color: var(--text-2); flex: 1; }
.project .link-arrow { margin-top: 6px; }

/* ---------- Education ---------- */
.edu { padding: 72px 0; }
.edu-inner { display: flex; align-items: center; gap: 24px; }
.edu h3 { font-size: 24px; letter-spacing: -.02em; margin-bottom: 4px; }
.edu .kicker { margin-bottom: 4px; }

/* ---------- Contact ---------- */
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact .section-title { margin-bottom: 52px; }
.contact-list { margin-top: 40px; display: grid; gap: 6px; }
.contact-list a { display: inline-flex; align-items: center; gap: 14px; color: var(--dark-text); font-size: 17px; padding: 8px 0; }
.contact-list a:hover { text-decoration: none; color: #2997ff; }
.contact-list svg { width: 20px; height: 20px; color: var(--dark-text-2); }
.form { background: var(--dark-2); border-radius: var(--radius); padding: 36px; display: grid; gap: 14px; }
.hp { position: absolute; left: -9999px; }
.field { position: relative; display: block; }
.field input, .field textarea {
  width: 100%; font: inherit; font-size: 17px; color: var(--dark-text); background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12); border-radius: 12px; padding: 26px 16px 10px; resize: vertical; transition: border-color .2s, background .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: #2997ff; background: rgba(255,255,255,.09); }
.field span { position: absolute; left: 17px; top: 18px; color: var(--dark-text-2); font-size: 17px; pointer-events: none; transition: all .2s var(--ease); }
.field input:focus + span, .field input:not(:placeholder-shown) + span,
.field textarea:focus + span, .field textarea:not(:placeholder-shown) + span { top: 8px; font-size: 12px; }
.form-note { min-height: 20px; font-size: 14px; color: var(--dark-text-2); text-align: center; }
.form-note.ok { color: #30d158; } .form-note.err { color: #ff6961; }

/* ---------- Footer ---------- */
.footer { background: var(--bg-alt); color: var(--text-3); font-size: 12px; padding: 22px 0; border-top: 1px solid var(--line); }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer nav { display: flex; gap: 20px; }
.footer a { color: var(--text-2); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .bento { grid-template-columns: 1fr 1fr; }
  .tile-hero { grid-column: span 2; grid-template-columns: 1fr; padding: 36px; }
  .tile-wide { grid-column: span 2; }
  .logo-row { justify-content: flex-start; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 48px; }
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0; flex-direction: column; gap: 0; padding: 8px 22px 22px;
    background: var(--bg); border-bottom: 1px solid var(--line);
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .3s, transform .3s var(--ease);
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { font-size: 24px; font-weight: 600; padding: 12px 0; opacity: 1; border-bottom: 1px solid var(--line); }
  .menu-btn { display: grid; }
  .section { padding: 88px 0; }
  .section-title { margin-bottom: 44px; }
  .lead { margin-top: -24px; }
  .hero { padding: calc(var(--nav-h) + 64px) 0 88px; }
  .bento, .projects { grid-template-columns: 1fr; }
  .tile-hero, .tile-wide { grid-column: auto; }
  .tile, .tile-hero { padding: 28px; }
  .tile-hero h3 { font-size: 32px; }
  .tile-stat .big { font-size: 80px; }
  .job { grid-template-columns: 1fr; gap: 10px; padding: 28px 0; }
  .job-when { padding-top: 0; }
  .segmented { display: flex; overflow-x: auto; flex-wrap: nowrap; scrollbar-width: none; }
  .segmented::-webkit-scrollbar { display: none; }
  .form { padding: 24px; }
  .edu-inner { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}