/* ==========================================================================
   shubham-tripathi.com — design system
   White + blue, Plus Jakarta Sans (headings) + Inter (body)
   ========================================================================== */

@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-var-latin.woff2") format("woff2");
  font-weight: 100 900; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("/assets/fonts/plus-jakarta-sans-var-latin.woff2") format("woff2");
  font-weight: 200 800; font-style: normal; font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --fg: #0f172a;
  --fg-2: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --line-strong: #cbd5e1;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eff4ff;
  --accent-tint: #dbe7ff;
  --on-accent: #ffffff;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, .08);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, .18);
  --radius: 12px;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-head: "Plus Jakarta Sans", "Inter", system-ui, -apple-system, sans-serif;
  --wrap: 1080px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1120; --bg-soft: #111a2e; --fg: #f1f5f9; --fg-2: #cbd5e1; --muted: #94a3b8;
    --line: #1e293b; --line-strong: #334155;
    --accent: #60a5fa; --accent-hover: #93c5fd; --accent-soft: #13213d; --accent-tint: #1b3360;
    --on-accent: #0b1120;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.4); --shadow-md: 0 8px 24px rgba(0,0,0,.4); --shadow-lg: 0 24px 60px rgba(0,0,0,.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b1120; --bg-soft: #111a2e; --fg: #f1f5f9; --fg-2: #cbd5e1; --muted: #94a3b8;
  --line: #1e293b; --line-strong: #334155;
  --accent: #60a5fa; --accent-hover: #93c5fd; --accent-soft: #13213d; --accent-tint: #1b3360;
  --on-accent: #0b1120;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4); --shadow-md: 0 8px 24px rgba(0,0,0,.4); --shadow-lg: 0 24px 60px rgba(0,0,0,.6);
  color-scheme: dark;
}

/* ---------- Base ---------- */
html { font-size: 17px; -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--fg-2);
  font-family: var(--font-body); line-height: 1.7;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  min-height: 100vh; display: flex; flex-direction: column;
  transition: background .2s, color .2s;
}
main { flex: 1; width: 100%; }
h1, h2, h3, h4 { font-family: var(--font-head); color: var(--fg); line-height: 1.15; letter-spacing: -0.02em; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; text-underline-offset: 3px; }
ul { list-style: none; }
img, svg { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--accent); color: var(--on-accent);
        padding: 8px 14px; border-radius: 8px; font-weight: 600; }
.skip:focus { top: 12px; color: var(--on-accent); text-decoration: none; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: 10px;
  font: 600 .95rem/1 var(--font-body); letter-spacing: -0.005em;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s, transform .06s;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--on-accent); box-shadow: 0 1px 2px rgba(37,99,235,.25), 0 4px 14px rgba(37,99,235,.22); }
.btn-primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.btn-secondary { background: var(--bg); color: var(--fg); border-color: var(--line-strong); box-shadow: var(--shadow-sm); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.btn-sm { height: 36px; padding: 0 14px; font-size: .88rem; border-radius: 9px; }
.btn svg { width: 18px; height: 18px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 14px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--fg); font-family: var(--font-head); font-weight: 700; font-size: 1.02rem; letter-spacing: -0.01em; white-space: nowrap; flex: none; }
.brand:hover { color: var(--fg); text-decoration: none; }
.logo {
  width: 34px; height: 34px; border-radius: 50%; flex: none;
  display: grid; place-items: center;
  background: var(--accent); color: #fff;
  font: 800 .8rem/1 var(--font-head); letter-spacing: -0.02em;
  box-shadow: 0 0 0 3px var(--accent-tint);
}
:root[data-theme="dark"] .logo { color: #0b1120; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .logo { color: #0b1120; } }

.nav { display: flex; align-items: center; gap: 2px; margin-left: 6px; }
.nav a {
  display: inline-flex; align-items: center; height: 36px; padding: 0 10px; border-radius: 9px;
  color: var(--fg-2); font-weight: 500; font-size: .92rem; border: 1px solid transparent;
  transition: background .15s, color .15s, border-color .15s;
}
.nav a:hover { color: var(--accent); background: var(--accent-soft); border-color: var(--accent-tint); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); border-color: var(--accent-tint); font-weight: 600; }

.header-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: inline-grid; place-items: center; height: 36px; min-width: 36px; padding: 0 9px;
  border-radius: 9px; border: 1px solid var(--line-strong); background: var(--bg); color: var(--fg-2);
  font: 600 .82rem/1 var(--font-body); cursor: pointer; box-shadow: var(--shadow-sm);
  transition: background .15s, color .15s, border-color .15s;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.icon-btn:active { transform: translateY(1px); }
.icon-btn svg { width: 17px; height: 17px; }
.search-btn { display: inline-flex; align-items: center; gap: 8px; min-width: 136px; justify-content: flex-start; color: var(--muted); font-weight: 500; }
.search-btn kbd { margin-left: auto; font: 600 .72rem/1 var(--font-body); padding: 4px 6px; border-radius: 5px; border: 1px solid var(--line); background: var(--bg-soft); color: var(--muted); }
.size-group { display: inline-flex; }
.size-group .icon-btn:first-child { border-radius: 9px 0 0 9px; }
.size-group .icon-btn:last-child { border-radius: 0 9px 9px 0; border-left: 0; }
.menu-btn { display: none; }
.theme-btn .moon { display: none; }
:root[data-theme="dark"] .theme-btn .sun { display: none; }
:root[data-theme="dark"] .theme-btn .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-btn .sun { display: none; }
  :root:not([data-theme="light"]) .theme-btn .moon { display: block; }
}

/* Mobile navigation */
.mobile-nav { display: none; border-top: 1px solid var(--line); background: var(--bg); }
.mobile-nav.open { display: block; }
.mobile-nav a { display: block; padding: 14px 24px; color: var(--fg); font-weight: 500; border-bottom: 1px solid var(--line); }
.mobile-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }
.mobile-nav a:hover { text-decoration: none; background: var(--accent-soft); }
.mobile-tools { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; color: var(--muted); font-size: .9rem; }
.mobile-tools .size-group { display: inline-flex; }

@media (max-width: 1100px) {
  .search-btn { min-width: 0; } .search-btn .label, .search-btn kbd { display: none; }
}
@media (max-width: 900px) {
  .nav, .header-cta { display: none; }
  .menu-btn { display: inline-grid; }
}
@media (max-width: 900px) {
  .header-actions .size-group { display: none; }
}
@media (max-width: 360px) {
  .brand .name { display: none; }
}

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-soft { background: var(--bg-soft); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font: 600 .78rem/1 var(--font-body); letter-spacing: .08em; text-transform: uppercase; color: var(--accent);
}
.eyebrow::before { content: ""; width: 18px; height: 2px; border-radius: 2px; background: currentColor; }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head h2 { font-size: 2.1rem; margin-top: 14px; }
.section-head p:not(.eyebrow) { margin-top: 14px; font-size: 1.06rem; color: var(--muted); }

/* ---------- Hero ---------- */
.hero { padding: 104px 0 96px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% -10% auto auto; width: 720px; height: 720px; border-radius: 50%;
  background: radial-gradient(circle, var(--accent-tint) 0%, transparent 62%); opacity: .7; pointer-events: none;
}
.hero .wrap { position: relative; }
.hero h1 { font-size: clamp(2.3rem, 5.2vw, 3.7rem); font-weight: 800; letter-spacing: -0.035em; max-width: 15ch; margin-top: 18px; }
.hero h1 .hl { color: var(--accent); }
.hero .lead { font-size: 1.18rem; max-width: 60ch; margin-top: 22px; color: var(--fg-2); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 34px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 40px; color: var(--muted); font-size: .9rem; }
.hero-meta a { color: var(--fg-2); font-weight: 500; display: inline-flex; align-items: center; gap: 7px; }
.hero-meta a:hover { color: var(--accent); }
.hero-meta svg { width: 16px; height: 16px; }

/* Page hero (inner pages) */
.page-hero { padding: 80px 0 56px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, var(--accent-soft), var(--bg)); }
.page-hero h1 { font-size: clamp(2rem, 4.2vw, 2.9rem); font-weight: 800; letter-spacing: -0.03em; margin-top: 14px; max-width: 22ch; }
.page-hero .lead { font-size: 1.12rem; max-width: 62ch; margin-top: 18px; }
.breadcrumb { display: flex; gap: 8px; font-size: .85rem; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }

/* ---------- Feature list (no boxed cards) ---------- */
.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 56px; }
.feature { padding: 30px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 44px 1fr; gap: 18px; }
.feature-icon {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent-tint);
}
.feature-icon svg { width: 21px; height: 21px; }
.feature h3 { font-size: 1.18rem; }
.feature p { margin-top: 8px; color: var(--muted); }
.feature a.more { display: inline-flex; margin-top: 10px; font-weight: 600; font-size: .92rem; }

/* Tech stack */
.stack { display: grid; grid-template-columns: repeat(5, 1fr); gap: 32px; }
.stack h3 { font-size: .8rem; font-family: var(--font-body); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 600; }
.stack ul { margin-top: 14px; display: grid; gap: 8px; }
.stack li { color: var(--fg); font-weight: 500; display: flex; align-items: center; gap: 10px; }
.stack li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex: none; }

/* ---------- Long-form content (inner pages) ---------- */
.layout { display: grid; grid-template-columns: 220px 1fr; gap: 64px; padding-top: 64px; padding-bottom: 96px; }
.toc { position: sticky; top: 100px; align-self: start; }
.toc p { font: 600 .75rem/1 var(--font-body); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 14px; }
.toc a { display: block; padding: 7px 0 7px 14px; border-left: 2px solid var(--line); color: var(--fg-2); font-size: .92rem; }
.toc a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.prose { max-width: 70ch; }
.prose > section + section { margin-top: 64px; padding-top: 64px; border-top: 1px solid var(--line); }
.prose h2 { font-size: 1.75rem; display: flex; align-items: center; gap: 14px; }
.prose h2 .feature-icon { width: 40px; height: 40px; }
.prose p { margin-top: 16px; }
ul.checks { margin-top: 20px; display: grid; gap: 10px; }
ul.checks li { position: relative; padding-left: 30px; }
ul.checks li::before {
  content: ""; position: absolute; left: 0; top: .42em; width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%232563eb'%3E%3Cpath d='M8.1 13.4 4.7 10l-1.1 1.1 4.5 4.5 9-9-1.1-1.1z'/%3E%3C/svg%3E") center/12px no-repeat;
  border: 1px solid var(--accent-tint);
}
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.tags span { font-size: .8rem; font-weight: 600; padding: 5px 12px; border-radius: 999px; color: var(--accent); background: var(--accent-soft); border: 1px solid var(--accent-tint); }

/* Services list */
.services { display: grid; gap: 0; }
.service { display: grid; grid-template-columns: 64px 1fr 1fr; gap: 28px; padding: 40px 0; border-top: 1px solid var(--line); }
.service:last-child { border-bottom: 1px solid var(--line); }
.service .num { font: 800 1.5rem/1 var(--font-head); color: var(--accent); }
.service h2 { font-size: 1.45rem; }
.service p { margin-top: 10px; color: var(--muted); }
.service ul.checks { margin-top: 0; }

/* Empty state */
.empty { text-align: center; padding: 96px 24px; max-width: 560px; margin: 0 auto; }
.empty .feature-icon { margin: 0 auto 22px; width: 56px; height: 56px; }
.empty h2 { font-size: 1.5rem; }
.empty p { margin-top: 12px; color: var(--muted); }
.empty .hero-actions { justify-content: center; margin-top: 26px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; padding-top: 64px; padding-bottom: 96px; align-items: start; }
.email-box { border: 1px solid var(--line); border-radius: 16px; padding: 32px; background: var(--bg); box-shadow: var(--shadow-md); }
.email-box .label { font: 600 .78rem/1 var(--font-body); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.email-box .address { display: block; margin-top: 12px; font: 700 clamp(1rem, 4.4vw, 1.6rem)/1.2 var(--font-head); color: var(--fg); overflow-wrap: anywhere; }
.email-box .address:hover { color: var(--accent); text-decoration: none; }
.email-box .hero-actions { margin-top: 24px; }
.copy-status { margin-top: 12px; font-size: .88rem; color: var(--accent); min-height: 1.4em; }
.steps { counter-reset: step; display: grid; gap: 22px; margin-top: 22px; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 34px 1fr; gap: 14px; }
.steps li::before { content: counter(step); width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent-tint); font: 700 .9rem/1 var(--font-head); }
.steps strong { color: var(--fg); display: block; }
.socials { display: grid; gap: 10px; margin-top: 28px; }
.socials a { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; color: var(--fg); font-weight: 600; transition: border-color .15s, background .15s; }
.socials a:hover { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); text-decoration: none; }
.socials svg { width: 20px; height: 20px; }
.socials span { margin-left: auto; color: var(--muted); font-weight: 400; font-size: .88rem; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--accent); color: #fff; }
:root[data-theme="dark"] .cta-band { background: #1d4ed8; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .cta-band { background: #1d4ed8; } }
.cta-band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding-top: 64px; padding-bottom: 64px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: 2rem; }
.cta-band p { color: rgba(255,255,255,.85); margin-top: 8px; font-size: 1.05rem; }
.cta-band .btn { background: #fff; color: #1d4ed8; box-shadow: 0 8px 24px rgba(0,0,0,.15); }
.cta-band .btn:hover { background: #eff4ff; color: #1e40af; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-soft); font-size: .92rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; padding: 56px 0 40px; }
.footer-grid p { color: var(--muted); margin-top: 14px; max-width: 34ch; }
.footer-grid h3 { font: 600 .75rem/1 var(--font-body); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 16px; }
.footer-grid ul { display: grid; gap: 10px; }
.footer-grid ul a { color: var(--fg-2); }
.footer-grid ul a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--line); padding: 20px 0; color: var(--muted); font-size: .85rem; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ---------- Search dialog ---------- */
.search-dialog {
  border: 0; padding: 0; background: transparent; max-width: 640px; width: calc(100% - 32px);
  margin: 12vh auto auto; color: var(--fg-2);
}
.search-dialog::backdrop { background: rgba(15, 23, 42, .45); backdrop-filter: blur(3px); }
.search-panel { background: var(--bg); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow-lg); overflow: hidden; }
.search-field { display: flex; align-items: center; gap: 12px; padding: 0 18px; border-bottom: 1px solid var(--line); }
.search-field svg { width: 20px; height: 20px; color: var(--accent); flex: none; }
.search-field input { flex: 1; height: 60px; border: 0; outline: none; background: transparent; color: var(--fg); font: 500 1.05rem var(--font-body); }
.search-field input::placeholder { color: var(--muted); }
.search-field kbd, .search-foot kbd { font: 600 .72rem/1 var(--font-body); padding: 4px 6px; border-radius: 5px; border: 1px solid var(--line); background: var(--bg-soft); color: var(--muted); cursor: pointer; }
.search-results { max-height: min(52vh, 460px); overflow-y: auto; padding: 8px; }
.search-results a { display: block; padding: 12px 14px; border-radius: 10px; color: var(--fg-2); border: 1px solid transparent; }
.search-results a:hover, .search-results a.active { background: var(--accent-soft); border-color: var(--accent-tint); text-decoration: none; }
.search-results .r-title { display: block; color: var(--fg); font-weight: 600; }
.search-results .r-page { font-size: .78rem; color: var(--accent); font-weight: 600; }
.search-results .r-snippet { display: block; font-size: .88rem; color: var(--muted); margin-top: 3px; }
.search-results mark { background: var(--accent-tint); color: var(--fg); border-radius: 3px; padding: 0 2px; }
.search-empty { padding: 28px 16px; text-align: center; color: var(--muted); font-size: .95rem; }
.search-foot { display: flex; gap: 16px; padding: 10px 18px; border-top: 1px solid var(--line); font-size: .78rem; color: var(--muted); background: var(--bg-soft); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .stack { grid-template-columns: repeat(3, 1fr); }
  .layout { grid-template-columns: 1fr; gap: 0; padding-top: 48px; }
  .contact-grid { padding-top: 48px; }
  .toc { display: none; }
  .service { grid-template-columns: 1fr; gap: 14px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  html { font-size: 16px; }
  .wrap { padding-left: 16px; padding-right: 16px; }
  .section { padding: 64px 0; }
  .hero { padding: 72px 0 64px; }
  .features { grid-template-columns: 1fr; }
  .stack { grid-template-columns: repeat(2, 1fr); }
  .section-head h2 { font-size: 1.7rem; }
  .cta-band h2 { font-size: 1.6rem; }
  .page-hero { padding: 56px 0 40px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}