/* =========================================================================
   ANDROID // PORTFOLIO  —  Material You Brutalist design system
   Author: Anish Guntreddi
   Aesthetic: raw structure (thick borders, hard offset shadows) fused with
   Material You expressive per-product color. No gradients hiding the seams.
   ========================================================================= */

/* ---- Fonts ----------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,400..800&family=IBM+Plex+Sans:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

/* ---- Tokens ---------------------------------------------------------- */
:root {
  /* surfaces */
  --paper:      #F4F1E9;   /* warm off-white base */
  --paper-2:    #ECE7DA;   /* sunken panels */
  --ink:        #14110B;   /* near-black */
  --ink-soft:   #4A4338;   /* muted body */
  --line:       #14110B;   /* brutalist borders are ink */

  /* expressive signature colors (Material You per-source theming) */
  --c-know:   #2D5BFF;   /* KnowFlow   — electric blue   */
  --c-focus:  #FF6A1A;   /* FocusGrid  — ignition orange */
  --c-receipt:#0E9C57;   /* ReceiptIQ  — ledger green    */
  --c-macro:  #E4338E;   /* MacroLens  — nutrient magenta*/
  --c-access: #7A3CF0;   /* AccessCheck— violet          */
  --accent:   #FFD23F;   /* global highlight — signal yellow */

  /* structure */
  --bd: 3px;                          /* border weight */
  --radius: 14px;                     /* friendly Material radius on raw frames */
  --shadow: 7px 7px 0 0 var(--ink);   /* hard offset shadow */
  --shadow-lg: 12px 12px 0 0 var(--ink);
  --shadow-press: 2px 2px 0 0 var(--ink);

  /* type */
  --font-display: 'Bricolage Grotesque', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'Space Mono', ui-monospace, monospace;

  /* motion */
  --ease: cubic-bezier(.2, .9, .25, 1);
  --dur: 220ms;

  /* z-scale */
  --z-nav: 50;
  --z-top: 30;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --paper:    #15120C;
  --paper-2:  #1F1B12;
  --ink:      #F4EFE2;
  --ink-soft: #B8AE99;
  --line:     #F4EFE2;
  --shadow:      7px 7px 0 0 #000;
  --shadow-lg:  12px 12px 0 0 #000;
  --shadow-press:2px 2px 0 0 #000;
  color-scheme: dark;
}

/* ---- Reset ----------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
  min-height: 100vh;
  overflow-x: hidden;
  /* faint dotted grid for texture/atmosphere */
  background-image: radial-gradient(var(--paper-2) 1.4px, transparent 1.4px);
  background-size: 26px 26px;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: var(--ink); }

:focus-visible {
  outline: var(--bd) solid var(--ink);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- Layout helpers -------------------------------------------------- */
.wrap { width: min(1180px, 92vw); margin-inline: auto; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 0;
  border-top: var(--bd) solid currentColor;
}

/* ---- Reusable brutalist primitives ----------------------------------- */
.frame {
  border: var(--bd) solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .02em;
  padding: .34rem .6rem;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  white-space: nowrap;
}

/* ---- Buttons --------------------------------------------------------- */
.btn {
  --bg: var(--ink);
  --fg: var(--paper);
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .92rem;
  letter-spacing: .02em;
  padding: .8rem 1.25rem;
  min-height: 46px;
  border: var(--bd) solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
  box-shadow: var(--shadow-press);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.btn:hover { transform: translate(-2px,-2px); box-shadow: 5px 5px 0 0 var(--ink); }
.btn:active { transform: translate(2px,2px); box-shadow: 0 0 0 0 var(--ink); }
.btn--ghost { --bg: var(--paper); --fg: var(--ink); }
.btn--accent { --bg: var(--accent); --fg: var(--ink); }

/* =======================================================================
   NAVBAR
   ===================================================================== */
.nav {
  position: fixed;
  inset: 16px 0 auto 0;
  z-index: var(--z-nav);
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.nav__inner {
  pointer-events: auto;
  width: min(1180px, 92vw);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .55rem .55rem .55rem 1.1rem;
  border: var(--bd) solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-press);
}
.brand {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  font-size: 1.02rem;
}
.brand__mark {
  width: 22px; height: 22px;
  background: var(--accent);
  border: 2px solid var(--ink);
  border-radius: 6px;
  transform: rotate(45deg);
  flex: none;
}
.nav__links { display: flex; align-items: center; gap: .35rem; }
.nav__link {
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .5rem .8rem;
  border-radius: 999px;
  color: var(--ink-soft);
  transition: color var(--dur), background var(--dur);
}
.nav__link:hover { color: var(--ink); background: var(--paper-2); }
.nav__actions { display: flex; align-items: center; gap: .5rem; }

.theme-toggle {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border: var(--bd) solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  cursor: pointer;
  box-shadow: var(--shadow-press);
  transition: transform var(--dur) var(--ease);
}
.theme-toggle:hover { transform: rotate(-12deg); }
.theme-toggle svg { width: 20px; height: 20px; }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

@media (max-width: 720px) { .nav__links { display: none; } }

/* =======================================================================
   HERO
   ===================================================================== */
.hero { position: relative; padding: 170px 0 90px; }
.hero__grid {
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 2.5rem;
  align-items: end;
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: .92;
  letter-spacing: -.03em;
  font-size: clamp(3rem, 9.5vw, 7.4rem);
  margin: 1.2rem 0 1.4rem;
}
.hero__title .line { display: block; overflow: hidden; }
.hero__title .word { display: inline-block; }
.hero__title em {
  font-style: normal;
  position: relative;
  white-space: nowrap;
}
.hero__title em::after {
  content: "";
  position: absolute; left: -.04em; right: -.04em; bottom: .07em;
  height: .34em;
  background: var(--accent);
  z-index: -1;
  transform: skewX(-9deg);
}
.hero__lede {
  max-width: 52ch;
  font-size: 1.12rem;
  color: var(--ink-soft);
  margin-bottom: 1.8rem;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; }

/* hero side: stacked stat tiles */
.hero__stats { display: grid; gap: 1rem; }
.stat {
  padding: 1.1rem 1.2rem;
  border: var(--bd) solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
  position: relative;
}
.stat:nth-child(1) { background: color-mix(in srgb, var(--c-know) 16%, var(--paper)); }
.stat:nth-child(2) { background: color-mix(in srgb, var(--c-receipt) 16%, var(--paper)); }
.stat:nth-child(3) { background: color-mix(in srgb, var(--c-macro) 16%, var(--paper)); }
.stat__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.6rem;
  line-height: 1;
  letter-spacing: -.02em;
}
.stat__label {
  font-family: var(--font-mono);
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--ink-soft);
  margin-top: .3rem;
}

/* scrolling tech marquee under hero */
.marquee {
  margin-top: 4.5rem;
  border-block: var(--bd) solid var(--line);
  padding: .9rem 0;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
}
.marquee__track {
  display: inline-flex;
  gap: 2.4rem;
  white-space: nowrap;
  animation: marquee 28s linear infinite;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  font-size: .92rem;
}
.marquee__track span { display: inline-flex; align-items: center; gap: 2.4rem; }
.marquee__track span::after { content: "◆"; color: var(--accent); }
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* =======================================================================
   SECTION HEADERS
   ===================================================================== */
.section { padding: 92px 0; }
.section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.6rem;
}
.section__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: .98;
  font-size: clamp(2.1rem, 5vw, 3.6rem);
}
.section__note { max-width: 40ch; color: var(--ink-soft); }

/* =======================================================================
   APP CARDS
   ===================================================================== */
.apps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.6rem; }
.apps > :last-child:nth-child(odd) { grid-column: 1 / -1; }

.card {
  --c: var(--ink);
  position: relative;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 1.05rem;
  padding: 1.5rem;
  border: var(--bd) solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card::before {            /* color spine on the left edge */
  content: "";
  position: absolute; inset: 0 auto 0 0;
  width: 10px;
  background: var(--c);
  border-right: var(--bd) solid var(--line);
}
.card:hover { transform: translate(-4px,-4px); box-shadow: var(--shadow-lg); }
.card:hover .card__icon { transform: rotate(-8deg) scale(1.04); }

.card__top { display: flex; align-items: center; justify-content: space-between; padding-left: .4rem; }
.card__index {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ink-soft);
  font-size: .9rem;
}
.card__icon {
  width: 58px; height: 58px;
  display: grid; place-items: center;
  background: var(--c);
  color: #fff;
  border: var(--bd) solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-press);
  transition: transform var(--dur) var(--ease);
}
.card__icon svg { width: 30px; height: 30px; stroke: #fff; }

.card__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.85rem;
  letter-spacing: -.02em;
  line-height: 1;
  padding-left: .4rem;
}
.card__tag { padding-left: .4rem; color: var(--ink-soft); font-size: .98rem; }

.card__chips { display: flex; flex-wrap: wrap; gap: .45rem; padding-left: .4rem; }
.card__chips .chip {
  border-color: color-mix(in srgb, var(--c) 55%, var(--line));
  background: color-mix(in srgb, var(--c) 11%, var(--paper));
}

.card__foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-left: .4rem;
  border-top: 2px dashed color-mix(in srgb, var(--ink) 30%, transparent);
  padding-top: 1rem;
}
.card__stack {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .03em;
  color: var(--ink-soft);
}
.card__link {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .82rem;
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .5rem .8rem;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--c);
  color: #fff;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  box-shadow: 2px 2px 0 0 var(--ink);
  white-space: nowrap;
}
.card__link:hover { transform: translate(-2px,-2px); box-shadow: 4px 4px 0 0 var(--ink); }
.card__link svg { width: 15px; height: 15px; stroke: #fff; }

/* =======================================================================
   PRINCIPLES / ARCHITECTURE
   ===================================================================== */
.arch { background: var(--paper-2); border-block: var(--bd) solid var(--line); }
.arch__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.4rem; align-items: center; }

.layers { display: grid; gap: 0; }
.layer {
  display: flex; align-items: center; gap: 1rem;
  padding: 1.15rem 1.3rem;
  border: var(--bd) solid var(--line);
  background: var(--paper);
  font-weight: 600;
}
.layer + .layer { border-top: 0; }
.layer:first-child { border-radius: var(--radius) var(--radius) 0 0; }
.layer:last-child  { border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow); }
.layer__tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  padding: .3rem .55rem;
  border: 2px solid var(--line);
  border-radius: 6px;
  background: var(--accent);
  color: var(--ink);
  flex: none;
}
.layer--ui     .layer__tag { background: var(--c-know); color:#fff; }
.layer--domain .layer__tag { background: var(--c-receipt); color:#fff; }
.layer--data   .layer__tag { background: var(--c-macro); color:#fff; }
.layer__desc { color: var(--ink-soft); font-size: .92rem; font-weight: 500; }
.layer__arrow { margin-left: auto; font-family: var(--font-mono); color: var(--ink-soft); }

.principles { display: grid; gap: 1rem; }
.principle {
  display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: start;
  padding: 1.1rem 1.2rem;
  border: var(--bd) solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}
.principle__n {
  font-family: var(--font-display); font-weight: 800; font-size: 1.4rem;
  width: 44px; height: 44px; display: grid; place-items: center;
  border: 2px solid var(--line); border-radius: 10px; background: var(--accent);
}
.principle h3 { font-family: var(--font-display); font-size: 1.15rem; letter-spacing: -.01em; }
.principle p { color: var(--ink-soft); font-size: .94rem; margin-top: .2rem; }

/* =======================================================================
   TECH STACK
   ===================================================================== */
.stack__cloud { display: flex; flex-wrap: wrap; gap: .7rem; }
.tech {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .9rem;
  padding: .7rem 1rem;
  border: var(--bd) solid var(--line);
  border-radius: 12px;
  background: var(--paper);
  box-shadow: var(--shadow-press);
  transition: transform var(--dur) var(--ease), background var(--dur), color var(--dur);
  cursor: default;
}
.tech:hover { transform: translate(-2px,-2px); background: var(--ink); color: var(--paper); }
.tech[data-c="know"]:hover    { background: var(--c-know); color:#fff; }
.tech[data-c="focus"]:hover   { background: var(--c-focus); color:#fff; }
.tech[data-c="receipt"]:hover { background: var(--c-receipt); color:#fff; }
.tech[data-c="macro"]:hover   { background: var(--c-macro); color:#fff; }
.tech[data-c="access"]:hover  { background: var(--c-access); color:#fff; }

/* gate banner */
.gates {
  margin-top: 2.6rem;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 0;
  border: var(--bd) solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
}
.gate { padding: 1.1rem; text-align: center; background: var(--paper); }
.gate + .gate { border-left: var(--bd) solid var(--line); }
.gate__check {
  font-family: var(--font-mono); font-weight: 700; color: var(--c-receipt);
  display: inline-flex; align-items: center; gap: .35rem;
}
.gate__label { font-size: .82rem; color: var(--ink-soft); margin-top: .3rem; }

/* =======================================================================
   FOOTER
   ===================================================================== */
.footer { border-top: var(--bd) solid var(--line); background: var(--ink); color: var(--paper); }
.footer .wrap { padding: 64px 0 48px; }
.footer__top { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; align-items: flex-start; }
.footer__big {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2rem, 6vw, 3.4rem); letter-spacing: -.02em; line-height: 1;
}
.footer__big em { font-style: normal; color: var(--accent); }
.footer__links { display: flex; gap: .7rem; flex-wrap: wrap; }
.footer__links a {
  font-family: var(--font-mono); font-weight: 700; font-size: .9rem;
  padding: .7rem 1.1rem; border: 2px solid var(--paper); border-radius: 999px;
  display: inline-flex; align-items: center; gap: .5rem;
  transition: background var(--dur), color var(--dur);
}
.footer__links a:hover { background: var(--accent); color: var(--ink); border-color: var(--accent); }
.footer__meta {
  margin-top: 3rem; padding-top: 1.4rem; border-top: 1px solid color-mix(in srgb, var(--paper) 30%, transparent);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: .78rem; color: color-mix(in srgb, var(--paper) 70%, transparent);
}

/* =======================================================================
   SCROLL REVEAL
   ===================================================================== */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
[data-reveal].is-in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: .08s; }
[data-reveal][data-delay="2"] { transition-delay: .16s; }
[data-reveal][data-delay="3"] { transition-delay: .24s; }
[data-reveal][data-delay="4"] { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}

/* hero entrance */
.fade-up { opacity: 0; transform: translateY(20px); animation: fadeUp .7s var(--ease) forwards; }
.fade-up.d1 { animation-delay: .05s; }
.fade-up.d2 { animation-delay: .15s; }
.fade-up.d3 { animation-delay: .25s; }
.fade-up.d4 { animation-delay: .35s; }
.fade-up.d5 { animation-delay: .45s; }
@keyframes fadeUp { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .fade-up { opacity: 1; transform: none; animation: none; } }

/* =======================================================================
   RESPONSIVE
   ===================================================================== */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 1.8rem; }
  .hero__stats { grid-template-columns: repeat(3, 1fr); }
  .arch__grid { grid-template-columns: 1fr; }
  .apps { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .hero { padding: 140px 0 64px; }
  .hero__stats { grid-template-columns: 1fr; }
  .gates { grid-template-columns: 1fr 1fr; }
  .gate:nth-child(odd) { border-left: 0; }
  .gate { border-top: var(--bd) solid var(--line); }
  .gates .gate:nth-child(-n+2) { border-top: 0; }
  .section { padding: 64px 0; }
}