/* ==========================================================================
   Palette: every color of the project lives here.
   Change these few lines to re-theme the whole page.
   ========================================================================== */
:root {
  /* Raw palette */
  --cream: #FAF3E1;
  --sand: #F5E7C6;
  --orange: #FF6D1F;
  --ink: #222222;
  --orange-deep: #A63C00;   /* darker orange, readable as text on cream (5.8:1) */
  --ink-soft: #5C5347;      /* muted text on cream (6.8:1) */
  --night: #1C1916;         /* warm dark background, built from --ink */
  --night-raised: #2A251F;  /* warm dark surface */
  --dust: #C9BBA0;          /* muted text on dark (8.0:1) */

  /* Semantic tokens (light theme) */
  --bg: var(--cream);
  --surface: var(--sand);
  --surface-strong: var(--cream);
  --text: var(--ink);
  --text-muted: var(--ink-soft);
  --accent: var(--orange);          /* buttons, glow, shapes */
  --accent-text: var(--orange-deep); /* links and accent words */
  --on-accent: var(--ink);           /* text on orange buttons (5.65:1) */
  --border: var(--ink);
  --shadow: var(--ink);
  --dot: rgb(34 34 34 / 0.12);
  --float-fill: rgb(255 109 31 / 0.10);
  --float-border: rgb(34 34 34 / 0.16);
  --scrim: rgb(34 34 34 / 0.55);
  --ripple: rgb(250 243 225 / 0.55);
  --error: var(--orange-deep);

  /* Fonts */
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Shape and motion */
  --radius: 14px;
  --radius-small: 10px;
  --lift: 4px;
  --ease-pop: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);

  color-scheme: light;
}

/* Dark theme: same palette, warm night tones instead of plain black */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: var(--night);
    --surface: var(--night-raised);
    --surface-strong: var(--night-raised);
    --text: var(--cream);
    --text-muted: var(--dust);
    --accent-text: var(--orange);
    --on-accent: var(--night);
    --border: var(--dust);
    --shadow: var(--orange);
    --dot: rgb(250 243 225 / 0.08);
    --float-fill: rgb(255 109 31 / 0.08);
    --float-border: rgb(250 243 225 / 0.12);
    --scrim: rgb(0 0 0 / 0.65);
    --ripple: rgb(28 25 22 / 0.35);
    --error: var(--orange);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: var(--night);
  --surface: var(--night-raised);
  --surface-strong: var(--night-raised);
  --text: var(--cream);
  --text-muted: var(--dust);
  --accent-text: var(--orange);
  --on-accent: var(--night);
  --border: var(--dust);
  --shadow: var(--orange);
  --dot: rgb(250 243 225 / 0.08);
  --float-fill: rgb(255 109 31 / 0.08);
  --float-border: rgb(250 243 225 / 0.12);
  --scrim: rgb(0 0 0 / 0.65);
  --ripple: rgb(28 25 22 / 0.35);
  --error: var(--orange);
  color-scheme: dark;
}

/* ==========================================================================
   Base
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background-color: var(--bg);
  background-image: radial-gradient(var(--dot) 1.2px, transparent 1.4px);
  background-size: 22px 22px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.1;
  margin: 0 0 0.5em;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--accent-text);
  text-underline-offset: 3px;
}

code,
kbd {
  font-family: var(--font-mono);
  font-size: 0.85em;
}

code {
  color: var(--accent-text);
}

kbd {
  display: inline-block;
  padding: 0.05em 0.45em;
  border: 1.5px solid var(--border);
  border-bottom-width: 3px;
  border-radius: 6px;
  background: var(--surface-strong);
  color: var(--text);
  line-height: 1.4;
}

:focus-visible {
  outline: 3px solid var(--accent-text);
  outline-offset: 3px;
}

main:focus {
  outline: none;
}

.skip-link {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ==========================================================================
   Live background: floating windows (transform + opacity only)
   ========================================================================== */
.backdrop-scene {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.float-win {
  position: absolute;
  width: var(--w, 140px);
  aspect-ratio: 4 / 3;
  border: 2px solid var(--float-border);
  border-top-width: 14px;
  border-radius: 12px;
  background: var(--float-fill);
  opacity: 0.9;
  animation: drift var(--t, 22s) ease-in-out infinite alternate;
  animation-delay: var(--d, 0s);
  will-change: transform;
}

.float-win:nth-child(1) { top: 8%;  left: -30px; --w: 160px; --t: 24s; --r: -8deg; }
.float-win:nth-child(2) { top: 62%; left: 6%;   --w: 110px; --t: 19s; --r: 6deg;  --d: -6s; }
.float-win:nth-child(3) { top: 18%; left: 44%;  --w: 90px;  --t: 26s; --r: 10deg; --d: -3s; }
.float-win:nth-child(4) { top: 72%; left: 52%;  --w: 150px; --t: 21s; --r: -5deg; --d: -9s; }
.float-win:nth-child(5) { top: 4%;  left: 80%;  --w: 130px; --t: 23s; --r: 7deg;  --d: -12s; }
.float-win:nth-child(6) { top: 44%; left: 88%;  --w: 100px; --t: 18s; --r: -9deg; --d: -4s; }
.float-win:nth-child(7) { top: 88%; left: 26%;  --w: 80px;  --t: 25s; --r: 4deg;  --d: -15s; }

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) rotate(var(--r, 0deg));
  }
  to {
    transform: translate3d(24px, -40px, 0) rotate(calc(var(--r, 0deg) * -1));
  }
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 20px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
}

.brand-accent {
  color: var(--accent-text);
}

.brand-icon {
  width: 34px;
  height: 34px;
  transition: transform 0.4s var(--ease-pop);
}

.brand:hover .brand-icon {
  transform: translateY(-3px) rotate(-6deg);
}

.icon-frame {
  fill: var(--accent);
  stroke: var(--border);
  stroke-width: 2;
}

.icon-line {
  stroke: var(--border);
  stroke-width: 2;
}

.icon-dot {
  fill: var(--border);
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 2px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--shadow);
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.theme-toggle:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--shadow);
}

.theme-toggle:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--shadow);
}

.theme-toggle svg {
  grid-area: 1 / 1;
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  transition: transform 0.5s var(--ease-pop), opacity 0.3s ease;
}

.icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.4);
}

/* Show the moon in the dark theme */
:root[data-theme="dark"] .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.4);
}

:root[data-theme="dark"] .icon-moon {
  opacity: 1;
  transform: none;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun {
    opacity: 0;
    transform: rotate(90deg) scale(0.4);
  }

  :root:not([data-theme="light"]) .icon-moon {
    opacity: 1;
    transform: none;
  }
}

/* ==========================================================================
   Layout sections
   ========================================================================== */
main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  align-items: center;
  gap: 48px;
  min-height: min(80vh, 680px);
  padding: 48px 0 40px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 20px;
  padding: 6px 14px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.hero h1 {
  font-size: clamp(2.6rem, 6.4vw, 4.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.pop {
  display: inline-block;
  color: var(--accent-text);
  animation: pop-word 3.2s var(--ease-pop) infinite;
}

@keyframes pop-word {
  0%, 70%, 100% { transform: scale(1) rotate(0); }
  78% { transform: scale(1.18) rotate(-4deg); }
  86% { transform: scale(0.96) rotate(2deg); }
}

.lead {
  max-width: 52ch;
  color: var(--text-muted);
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

/* Decorative window stack */
.hero-art {
  position: relative;
  aspect-ratio: 1 / 0.9;
  max-width: 460px;
  width: 100%;
  justify-self: center;
}

.stack-win {
  position: absolute;
  inset: 0;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 6px 6px 0 var(--shadow);
}

.stack-win--back {
  transform: translate(-8%, -10%) rotate(-7deg) scale(0.86);
  opacity: 0.5;
}

.stack-win--mid {
  transform: translate(6%, -4%) rotate(5deg) scale(0.9);
  opacity: 0.75;
}

.stack-win--front {
  overflow: hidden;
  background: var(--surface-strong);
  transform: translate(0, 6%) scale(0.92);
  animation: hover-float 6s ease-in-out infinite;
}

@keyframes hover-float {
  0%, 100% { transform: translate(0, 6%) scale(0.92); }
  50% { transform: translate(0, 2%) scale(0.92); }
}

.win-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 2px solid var(--border);
  background: var(--accent);
  color: var(--on-accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.win-bar i {
  width: 11px;
  height: 11px;
  border: 1.5px solid var(--on-accent);
  border-radius: 50%;
}

.win-bar span {
  margin-left: auto;
}

.win-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 28px;
}

.win-body b {
  font-family: var(--font-display);
  font-size: 2.2rem;
}

.skeleton {
  height: 12px;
  border-radius: 6px;
  background: var(--text);
  opacity: 0.14;
}

.skeleton--short {
  width: 60%;
}

.fake-btn {
  align-self: flex-start;
  margin-top: 8px;
  padding: 8px 22px;
  border: 2px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
  box-shadow: 3px 3px 0 var(--shadow);
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 96px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 22px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.stat-num {
  color: var(--accent-text);
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.section-title {
  margin-bottom: 32px;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  letter-spacing: -0.02em;
}

/* Demo cards */
.demos {
  margin-bottom: 96px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  overflow: hidden;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-strong);
  box-shadow: 6px 6px 0 var(--shadow);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.card:hover {
  transform: translate(-3px, -6px);
  box-shadow: 9px 12px 0 var(--shadow);
}

.card-body {
  padding: 24px;
}

.card h3 {
  font-size: 1.5rem;
}

.card p {
  color: var(--text-muted);
}

/* Steps */
.how {
  margin-bottom: 96px;
}

.steps {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding: 24px;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--surface);
}

.step-num {
  flex: none;
  color: var(--accent-text);
  font-family: var(--font-mono);
  font-size: 1.4rem;
}

.step h3 {
  font-size: 1.3rem;
}

.step p {
  margin: 0;
  color: var(--text-muted);
}

.site-footer {
  padding: 32px 20px 48px;
  border-top: 2px dashed var(--float-border);
  color: var(--text-muted);
  text-align: center;
}

.site-footer p {
  margin: 0;
}

/* ==========================================================================
   Buttons: lift on hover, press on click, hard shadow and ripple
   ========================================================================== */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  overflow: hidden;
  padding: 14px 24px;
  border: 2px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface-strong);
  color: var(--text);
  font: 700 1rem/1.2 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--lift) var(--lift) 0 var(--shadow);
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: calc(var(--lift) + 2px) calc(var(--lift) + 2px) 0 var(--shadow);
}

.btn:active {
  transform: translate(var(--lift), var(--lift));
  box-shadow: 0 0 0 var(--shadow);
}

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
}

.btn-ghost {
  background: transparent;
}

.btn-small {
  padding: 10px 18px;
  font-size: 0.95rem;
  --lift: 3px;
}

/* Micro effect: the front window of the icon pops up on hover */
.btn-icon {
  width: 22px;
  height: 22px;
  overflow: visible;
}

.btn-icon rect {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  transition: transform 0.35s var(--ease-pop);
}

.btn-icon-front {
  fill: var(--accent) !important;
}

.btn:hover .btn-icon-front {
  transform: translate(2px, -3px);
}

.btn:hover .btn-icon-back {
  transform: translate(-1px, 1px);
}

.ripple {
  position: absolute;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  border-radius: 50%;
  background: var(--ripple);
  pointer-events: none;
  transform: scale(0);
  animation: ripple 0.6s var(--ease-out) forwards;
}

@keyframes ripple {
  to {
    transform: scale(40);
    opacity: 0;
  }
}

/* ==========================================================================
   Modal (native <dialog>)
   ========================================================================== */
.modal {
  width: min(92vw, 460px);
  max-height: 90vh;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text);
  overflow: visible;
}

.modal::backdrop {
  background: var(--scrim);
}

.modal[open] {
  animation: modal-in 0.45s var(--ease-pop);
}

.modal[open]::backdrop {
  animation: fade-in 0.3s ease;
}

.modal.is-closing {
  animation: modal-out 0.2s ease-in forwards;
}

.modal.is-closing::backdrop {
  animation: fade-out 0.2s ease-in forwards;
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.92);
  }
}

@keyframes modal-out {
  to {
    opacity: 0;
    transform: translateY(12px) scale(0.96);
  }
}

@keyframes fade-in {
  from { opacity: 0; }
}

@keyframes fade-out {
  to { opacity: 0; }
}

.modal-inner {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-strong);
  box-shadow: 8px 8px 0 var(--shadow);
}

.modal-close {
  position: absolute;
  top: 5px;
  right: 8px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--on-accent);
  cursor: pointer;
  transition: transform 0.3s var(--ease-pop);
}

.modal-close:hover {
  transform: rotate(90deg) scale(1.1);
}

.modal-close svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.5;
  stroke-linecap: round;
}

.modal .win-bar {
  padding-right: 48px;
}

.modal-body {
  padding: 28px;
}

.modal-body h2 {
  font-size: 2rem;
}

.modal-body > p {
  color: var(--text-muted);
}

.modal-emoji {
  margin: 0 0 8px;
  font-size: 2.6rem;
  line-height: 1;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 8px;
}

.modal-form {
  display: grid;
  gap: 8px;
}

.modal-form label {
  font-weight: 700;
}

.modal-form input {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.modal-form input::placeholder {
  color: var(--text-muted);
}

.modal-form input[aria-invalid="true"] {
  border-color: var(--error);
}

.form-error {
  min-height: 1.4em;
  margin: 0;
  color: var(--error);
  font-size: 0.9rem;
  font-weight: 500;
}

.modal-form .btn {
  justify-self: start;
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 50;
  max-width: calc(100vw - 32px);
  padding: 12px 20px;
  border: 2px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface-strong);
  color: var(--text);
  font-weight: 500;
  box-shadow: 4px 4px 0 var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 20px);
  transition: transform 0.35s var(--ease-pop), opacity 0.25s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ==========================================================================
   Scroll reveal (only when JS is on, so content never stays hidden)
   ========================================================================== */
.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
  transition-delay: var(--delay, 0s);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Cards keep their hover lift after the reveal */
.js .card.reveal.is-visible {
  transition: opacity 0.6s var(--ease-out), transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.js .card.reveal.is-visible:hover {
  transform: translate(-3px, -6px);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 32px;
    min-height: 0;
    padding-top: 32px;
  }

  .hero-art {
    max-width: 340px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 1rem;
  }

  main,
  .site-header {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .hero-art {
    width: 80%;
  }

  .stat {
    padding: 16px;
  }

  .stat-num {
    font-size: 2.1rem;
  }

  .step {
    flex-direction: column;
    gap: 8px;
  }

  .modal-body {
    padding: 22px;
  }
}

/* ==========================================================================
   Reduced motion: switch movement off
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .float-win,
  .pop,
  .stack-win--front {
    animation: none !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}