/* ProjectKidCreations — onboarding/styles.css
 * Standalone vanilla CSS. Mirrors the :root block from ../tokens.css
 * (PKC v0.1.0 brand) so the form works directly via file:// without
 * requiring Tailwind processing. Keep tokens in sync if tokens.css changes.
 */

:root {
  color-scheme: dark;

  /* Brand palette — locked, 5 colors */
  --pkc-tac-black: #0A0A0A;
  --pkc-hi-vis:    #FF5F1F;
  --pkc-slate:     #3F4448;
  --pkc-ghost:     #1A1C1E;
  --pkc-concrete:  #E8E8E8;

  /* Semantic aliases */
  --pkc-bg:            var(--pkc-tac-black);
  --pkc-surface:       var(--pkc-ghost);
  --pkc-surface-raised:#24272A;
  --pkc-border:        var(--pkc-slate);
  --pkc-border-strong: #5A5F63;
  --pkc-text:          var(--pkc-concrete);
  --pkc-text-muted:    #9AA0A4;
  --pkc-accent:        var(--pkc-hi-vis);
  --pkc-accent-ink:    var(--pkc-tac-black);
  --pkc-danger:        #FF3B30;

  /* Type families */
  --font-display: "Archivo Black", "Helvetica Neue", Arial, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Motion */
  --ease-snappy: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-scan:   steps(8, end);
  --duration-fast:      120ms;
  --duration-snap:      200ms;
  --duration-cinematic: 480ms;

  /* Form-specific */
  --steps: 3;
  --current-step: 1;
}

/* ──────────────────────────────────────────────
 * Reset / base
 * ────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--pkc-bg);
  color: var(--pkc-text);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.01em;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  display: flex;
  flex-direction: column;
}

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

a { color: var(--pkc-accent); text-decoration: none; }
a:hover { color: var(--pkc-text); }

input { font: inherit; color: inherit; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

/* ──────────────────────────────────────────────
 * Runtime UI fallback (#46) — hide chrome until JS adds .ready
 * ────────────────────────────────────────────── */
body:not(.ready) main,
body:not(.ready) header.shell-header { visibility: hidden; }

body:not(.ready)::before {
  content: "// LOADING...";
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--pkc-text-muted);
  opacity: 0;
  animation: pkc-loading-reveal 0s linear 600ms forwards;
}

@keyframes pkc-loading-reveal { to { opacity: 1; } }

/* ──────────────────────────────────────────────
 * Header / progress / status / back
 * ────────────────────────────────────────────── */
.shell-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 24px 32px;
  border-bottom: 1px solid var(--pkc-border);
  background: var(--pkc-bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.progress {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 200px;
}

.progress-counter {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--pkc-text-muted);
}

.progress-bar {
  display: grid;
  grid-template-columns: repeat(var(--steps), 1fr);
  gap: 4px;
  height: 2px;
}

.progress-bar > span {
  background: var(--pkc-border);
  transition: background var(--duration-snap) var(--ease-snappy);
}

.progress-bar > span.filled {
  background: var(--pkc-accent);
}

.status {
  margin: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--pkc-text-muted);
  min-height: 14px;
  transition: color var(--duration-fast) var(--ease-snappy);
}

.status[data-tone="saved"]   { color: var(--pkc-text-muted); }
.status[data-tone="offline"] { color: var(--pkc-accent); opacity: 0.85; }
.status[data-tone="momentum"] { color: var(--pkc-text-muted); }
.status[data-tone="rate"]    { color: var(--pkc-danger); }

.back {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--pkc-text-muted);
  padding: 8px 12px;
  border: 1px solid var(--pkc-border);
  border-radius: 2px;
  transition: color var(--duration-fast) var(--ease-snappy), border-color var(--duration-fast) var(--ease-snappy);
}

.back:hover {
  color: var(--pkc-accent);
  border-color: var(--pkc-accent);
}

/* ──────────────────────────────────────────────
 * Form sections
 * ────────────────────────────────────────────── */
#form,
#end-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  padding: 48px 32px 96px;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
}

section[data-question] {
  display: none;
  flex-direction: column;
  gap: 16px;
}

section[data-question][data-active="true"] {
  display: flex;
  animation: pkc-pop-up var(--duration-snap) var(--ease-snappy) both,
             pkc-scanline-in var(--duration-snap) var(--ease-scan) both;
}

@keyframes pkc-pop-up {
  from { transform: translateY(8px); opacity: 0; }
  to   { transform: translateY(0);   opacity: 1; }
}

@keyframes pkc-scanline-in {
  from { -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 0%);
                 mask-image: linear-gradient(to bottom, #000 0%, transparent 0%); }
  to   { -webkit-mask-image: linear-gradient(to bottom, #000 100%, transparent 100%);
                 mask-image: linear-gradient(to bottom, #000 100%, transparent 100%); }
}

.step-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pkc-accent);
}

.prompt {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--pkc-text);
}

.momentum {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pkc-text-muted);
}

input[type="text"],
input[type="email"] {
  display: block;
  width: 100%;
  margin-top: 16px;
  padding: 16px 0;
  background: transparent;
  border: 0;
  border-bottom: 2px solid var(--pkc-border);
  border-radius: 0;
  color: var(--pkc-text);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.01em;
  caret-color: var(--pkc-accent);
  transition: border-color var(--duration-fast) var(--ease-snappy);
  outline: none;
}

input::placeholder { color: var(--pkc-text-muted); opacity: 0.5; }

input:focus { border-bottom-color: var(--pkc-accent); }

input:focus-visible {
  outline: 2px solid var(--pkc-accent);
  outline-offset: 6px;
  border-radius: 2px;
}

/* Autofill sentinel (#23) */
@keyframes pkc-autofill { from {} to {} }

input:-webkit-autofill {
  animation-name: pkc-autofill;
  animation-duration: 1ms;
  -webkit-text-fill-color: var(--pkc-text);
  -webkit-box-shadow: 0 0 0 1000px var(--pkc-bg) inset;
  caret-color: var(--pkc-accent);
}

/* Invalid shake (#27 / #28) */
section[data-question].invalid input {
  border-bottom-color: var(--pkc-danger);
  animation: pkc-shake 160ms steps(4, end);
}

@keyframes pkc-shake {
  0%, 100% { transform: translateX(0); }
  25%      { transform: translateX(-4px); }
  75%      { transform: translateX(4px); }
}

/* Error region */
.error-region {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 36px;
}

.error-msg {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--pkc-danger);
}

.error-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--pkc-text-muted);
}

.hint,
.idle-hint {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--pkc-text-muted);
}

.idle-hint {
  color: var(--pkc-accent);
  opacity: 0.85;
  animation: pkc-pulse 1.2s ease-in-out infinite;
}

@keyframes pkc-pulse {
  0%, 100% { opacity: 0.85; }
  50%      { opacity: 0.4; }
}

/* ──────────────────────────────────────────────
 * CTA — chamfer top-right (#26)
 * ────────────────────────────────────────────── */
.cta {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 14px 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pkc-accent);
  background: transparent;
  border: 2px solid var(--pkc-accent);
  border-radius: 2px;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  transition:
    transform var(--duration-fast) var(--ease-snappy),
    background var(--duration-fast) var(--ease-snappy),
    color var(--duration-fast) var(--ease-snappy);
  cursor: pointer;
}

.cta:hover {
  transform: translateY(-1px);
  background: var(--pkc-accent);
  color: var(--pkc-accent-ink);
}

.cta:active {
  transform: translateY(0);
}

.cta:focus-visible {
  outline: 2px solid var(--pkc-accent);
  outline-offset: 4px;
}

/* ──────────────────────────────────────────────
 * End section + confirmation
 * ────────────────────────────────────────────── */
#end-section {
  display: none;
}

#end-section[data-active="true"] {
  display: flex;
  flex-direction: column;
  gap: 24px;
  animation: pkc-pop-up var(--duration-snap) var(--ease-snappy) both,
             pkc-scanline-in var(--duration-snap) var(--ease-scan) both;
}

#end-section h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--pkc-text);
}

.confirm-line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pkc-accent);
  opacity: 0;
  transform: translateY(4px);
}

.confirm-line[data-revealed="true"] {
  animation: pkc-confirm-fade 200ms var(--ease-snappy) 200ms forwards;
}

@keyframes pkc-confirm-fade {
  to { opacity: 1; transform: translateY(0); }
}

.submission-id {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--pkc-text-muted);
  cursor: text;
  user-select: text;
  transition: color var(--duration-fast) var(--ease-snappy);
}

.submission-id:hover { color: var(--pkc-accent); }

/* ──────────────────────────────────────────────
 * Kill switch (#43)
 * ────────────────────────────────────────────── */
.kill {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 32px;
  background: var(--pkc-bg);
  z-index: 1000;
  text-align: center;
}

.kill h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 6vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--pkc-text);
}

.kill .kill-line,
.kill .kill-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.kill .kill-line { color: var(--pkc-accent); }
.kill .kill-meta { color: var(--pkc-text-muted); }

/* ──────────────────────────────────────────────
 * Mobile
 * ────────────────────────────────────────────── */
@media (max-width: 600px) {
  .shell-header {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    gap: 12px;
    padding: 16px;
  }

  .progress { min-width: 0; grid-column: 1 / -1; grid-row: 1; }
  .status   { grid-column: 1; grid-row: 2; text-align: left; }
  .back     { grid-column: 2; grid-row: 2; justify-self: end; }

  #form,
  #end-section { padding: 32px 16px 64px; }

  input[type="text"],
  input[type="email"] { font-size: 18px; }

  .cta { width: 100%; justify-content: center; }
}

/* ──────────────────────────────────────────────
 * Reduced motion (#46 / #19 / etc.)
 * ────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  body:not(.ready)::before { animation: none; opacity: 1; }
  .confirm-line { opacity: 1; transform: none; }
  .idle-hint { animation: none; }
  section[data-question][data-active="true"] { animation: none; }
}