/* ============================================================
   ALETHEIA — PRE-REGISTER DECK (v2 slideshow)
   Penthouse-at-dusk register. Sealed-4D voice. Laptop-primary.
   ============================================================ */

/* ---------- FONTS ---------- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+SC:wght@300;400;500;600&family=EB+Garamond:ital,wght@0,400;0,500;1,400;1,500&family=Cormorant:ital,wght@0,300;0,400;0,500;1,400&family=JetBrains+Mono:wght@300;400;500&display=swap');

/* ---------- DESIGN TOKENS ---------- */
:root {
  /* Palette — penthouse at dusk */
  --ink: #0a0b1a;
  --ink-2: #0e1020;
  --ink-3: #14162a;
  --ink-edge: #1a1c33;

  --linen: #E8DDD0;
  --linen-soft: #C9BDA9;
  --linen-faint: #8a7e6e;
  --linen-dim: #5a5141;

  --amber: #C29960;
  --amber-glow: #D4A972;
  --amber-soft: #b0875560;
  --gold: #B8975A;

  /* Type families */
  --font-mark: 'Cormorant SC', 'Cormorant Garamond', 'EB Garamond', serif;
  --font-display: 'EB Garamond', 'Times New Roman', serif;
  --font-header: 'Cormorant', 'EB Garamond', serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Wordmark — exact match to personal Aletheia (redesign.css .masthead) */
  --mark-color: rgba(255, 230, 185, 0.78);
  --mark-shadow: 0 0 14px rgba(255, 200, 140, 0.2), 0 0 18px rgba(0, 0, 0, 0.7);

  /* Scale — modular, fluid */
  --s-hero: clamp(2.5rem, 5vw, 4rem);
  --s-display: clamp(2rem, 3.6vw, 3rem);
  --s-h1: clamp(1.75rem, 3vw, 2.25rem);
  --s-h2: clamp(1.5rem, 2.5vw, 2rem);
  --s-h3: 1.375rem;
  --s-lead: clamp(1.0625rem, 1.3vw, 1.25rem);
  --s-body: 1.0625rem;
  --s-small: 0.875rem;
  --s-caption: 0.72rem;

  /* Spacing */
  --gap-xs: 8px;
  --gap-sm: 16px;
  --gap-md: 24px;
  --gap-lg: 40px;
  --gap-xl: 64px;
  --gap-2xl: 96px;

  /* Layout */
  --maxw-prose: 64ch;
  --maxw-edge: 1280px;
  --pad-edge: clamp(20px, 4vw, 64px);

  --chrome-h-top: clamp(60px, 8vh, 88px);
  --chrome-h-bot: clamp(64px, 8vh, 88px);

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --slide-fade: 0.7s var(--ease-out);
}

/* ---------- RESET + BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html {
  background: var(--ink);
  color: var(--linen);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  height: 100%;
}

body {
  height: 100%;
  min-height: 100vh;
  background: var(--ink);
  position: relative;
  overflow: hidden;
}

/* ---------- COSMIC BACKGROUND — penthouse at dusk ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(194, 153, 96, 0.08), transparent 60%),
    radial-gradient(ellipse 50% 60% at 20% 80%, rgba(168, 145, 122, 0.06), transparent 65%),
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(20, 22, 42, 0.6), transparent 70%),
    var(--ink);
  animation: dusk-drift 90s ease-in-out infinite alternate;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 12% 18%, rgba(232, 221, 208, 0.4), transparent 50%),
    radial-gradient(1px 1px at 24% 62%, rgba(232, 221, 208, 0.3), transparent 50%),
    radial-gradient(1px 1px at 38% 22%, rgba(232, 221, 208, 0.25), transparent 50%),
    radial-gradient(1px 1px at 54% 78%, rgba(232, 221, 208, 0.35), transparent 50%),
    radial-gradient(1px 1px at 68% 12%, rgba(232, 221, 208, 0.3), transparent 50%),
    radial-gradient(1px 1px at 82% 48%, rgba(232, 221, 208, 0.25), transparent 50%),
    radial-gradient(1px 1px at 92% 84%, rgba(232, 221, 208, 0.35), transparent 50%),
    radial-gradient(1px 1px at 6% 42%, rgba(232, 221, 208, 0.2), transparent 50%);
  background-size: 100% 100%;
  opacity: 0.55;
  animation: starlight 12s ease-in-out infinite alternate;
}

@keyframes dusk-drift {
  0%   { transform: translateX(0) translateY(0); }
  100% { transform: translateX(-2%) translateY(-1%); }
}
@keyframes starlight {
  0%   { opacity: 0.45; }
  50%  { opacity: 0.7; }
  100% { opacity: 0.5; }
}

/* ============================================================
   DECK LAYOUT — flex column 100vh, no scroll
   ============================================================ */
.deck {
  position: relative;
  z-index: 1;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ---------- TOP CHROME ---------- */
.deck-top {
  height: var(--chrome-h-top);
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 var(--pad-edge);
  gap: var(--gap-md);
  position: relative;
  z-index: 5;
}

/* Cormorant SC handles small-caps via the font itself — no text-transform needed */
.deck-name {
  font-family: var(--font-mark);
  font-style: normal;
  font-weight: 400;
  font-size: clamp(18px, 1.6vw, 24px);
  letter-spacing: 0.22em;
  color: var(--mark-color);
  text-shadow: var(--mark-shadow);
  justify-self: start;
}

.deck-phrase {
  /* Matches wordmark — same family base (Cormorant italic), same color + shadow, italicised */
  font-family: var(--font-header);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.05rem, 1.6vw, 1.5rem);
  letter-spacing: 0.04em;
  color: var(--mark-color);
  text-shadow: var(--mark-shadow);
  justify-self: center;
  text-align: center;
  white-space: nowrap;
}

.deck-spacer {
  justify-self: end;
}

/* ---------- SLIDES STAGE ---------- */
.slides {
  flex: 1 1 auto;
  position: relative;
  min-height: 0;
  overflow: hidden;
}

.slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 3vh, 40px) var(--pad-edge);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--slide-fade);
  overflow: hidden;
}

.slide[data-active] {
  opacity: 1;
  pointer-events: auto;
}

.slide[data-active] .slide-content,
.slide[data-active] .surface-grid,
.slide[data-active] .welcome-inner,
.slide[data-active] .founding-inner {
  animation: slide-in 0.9s var(--ease-out) both;
  animation-delay: 0.15s;
}

@keyframes slide-in {
  0% { opacity: 0; transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ---------- BOTTOM CHROME ---------- */
.deck-bottom {
  height: var(--chrome-h-bot);
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 56px 1fr 56px;
  align-items: center;
  padding: 0 var(--pad-edge);
  gap: var(--gap-md);
  position: relative;
  z-index: 5;
}

.deck-arrow {
  appearance: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(168, 145, 122, 0.25);
  background: transparent;
  color: var(--linen-soft);
  font-size: 1.5rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  font-family: var(--font-display);
  padding: 0;
}

.deck-prev { justify-self: start; }
.deck-next { justify-self: end; }

.deck-arrow:hover:not(:disabled) {
  border-color: var(--amber);
  color: var(--amber-glow);
  transform: translateY(-1px);
}

.deck-arrow:focus-visible {
  outline: 1px solid var(--amber-glow);
  outline-offset: 3px;
}

.deck-arrow:disabled {
  opacity: 0.3;
  cursor: default;
}

.deck-arrow span {
  display: inline-block;
  position: relative;
  top: -1px;
}

.deck-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  justify-self: center;
}

.deck-dot {
  appearance: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(168, 145, 122, 0.28);
  padding: 0;
  cursor: pointer;
  transition: all 0.4s var(--ease-out);
}

.deck-dot:hover {
  background: var(--linen-soft);
  transform: scale(1.2);
}

.deck-dot[data-active] {
  background: var(--amber);
  box-shadow: 0 0 12px rgba(212, 169, 114, 0.55);
  width: 10px;
  height: 10px;
}

.deck-dot:focus-visible {
  outline: 1px solid var(--amber-glow);
  outline-offset: 3px;
}

/* ============================================================
   SLIDE LAYOUTS
   ============================================================ */

/* ---------- SLIDE 1 — WELCOME ---------- */
.slide-welcome .welcome-inner {
  max-width: 56ch;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--gap-lg);
}

.welcome-tag {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
  max-width: 52ch;
}

.welcome-cue {
  margin-top: var(--gap-lg);
  display: inline-flex;
  align-items: center;
  gap: var(--gap-sm);
  color: var(--amber);
}

.welcome-cue-arrow {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--amber-glow);
  animation: nudge 2.2s ease-in-out infinite;
}

@keyframes nudge {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(4px); }
}

/* ---------- SLIDES 2-4 — SURFACE PREVIEW ---------- */
.surface-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 4vw, 80px);
  align-items: center;
  width: 100%;
  max-width: var(--maxw-edge);
}

.surface-mockup {
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 0;
}

.surface-caption {
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
  max-width: 42ch;
}

.surface-caption .t-display {
  margin-bottom: var(--gap-xs);
}

/* ---------- SLIDE 5 — FOUNDING ---------- */
.slide-founding .founding-inner {
  max-width: 56ch;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--gap-lg);
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: var(--gap-lg);
  align-items: stretch;
  width: 100%;
  max-width: 36ch;
  margin-top: var(--gap-md);
}

.signup-label {
  display: flex;
  flex-direction: column;
  gap: var(--gap-xs);
}

.signup-input {
  text-align: center;
}

.signup-btn {
  align-self: center;
  min-width: 220px;
}

.signup-note {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--linen-faint);
  margin: 0;
  line-height: 1.6;
}

.signup-confirm {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--gap-md);
  opacity: 0;
  transform: translateY(8px);
  animation: fade-in 0.9s var(--ease-out) forwards;
}

.signup-confirm[hidden] { display: none; }

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

/* ============================================================
   TYPE PRIMITIVES
   ============================================================ */
.t-display {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--s-display);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--linen);
  margin: 0;
}

.t-h2 {
  font-family: var(--font-header);
  font-weight: 400;
  font-size: var(--s-h2);
  line-height: 1.22;
  color: var(--linen);
  margin: 0;
}

.t-lead {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--s-lead);
  line-height: 1.55;
  color: var(--linen-soft);
  margin: 0;
}

.t-body {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--s-body);
  line-height: 1.65;
  color: var(--linen-soft);
  margin: 0;
}

.t-caption {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: var(--s-caption);
  line-height: 1.4;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--linen-faint);
  margin: 0;
}

.t-label {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: var(--s-small);
  line-height: 1.4;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0;
}

.t-soft { color: var(--linen-soft); opacity: 0.78; }
.italic { font-style: italic; }
.center { text-align: center; }

.divider-short {
  width: 56px;
  height: 1px;
  background: var(--amber-soft);
  margin: 0 auto;
}

/* ============================================================
   PRODUCT MOCKUP — device frame (carried from v1, sized down)
   ============================================================ */

.preview-frame {
  position: relative;
  width: 100%;
  max-width: clamp(360px, 36vw, 520px);
  background: linear-gradient(145deg, #0a0b1a 0%, #07081a 100%);
  border: 1px solid rgba(168, 145, 122, 0.18);
  box-shadow:
    0 25px 60px -25px rgba(0, 0, 0, 0.7),
    0 8px 20px -10px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(168, 145, 122, 0.06);
  border-radius: 4px;
  overflow: hidden;
  isolation: isolate;
}

.preview-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 60% 10%, rgba(194, 153, 96, 0.07), transparent 60%),
    radial-gradient(ellipse 60% 40% at 20% 90%, rgba(168, 145, 122, 0.04), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.frame-chrome {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(168, 145, 122, 0.1);
}

.chrome-name {
  font-family: var(--font-mark);
  font-style: normal;
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--mark-color);
  letter-spacing: 0.22em;
  text-shadow: var(--mark-shadow);
}

.chrome-clock {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--linen-faint);
}

.frame-content {
  position: relative;
  z-index: 1;
  min-height: 340px;
  padding: 30px 26px 44px;
  display: flex;
  flex-direction: column;
}

.mock-stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 18% 24%, rgba(232, 221, 208, 0.3), transparent 50%),
    radial-gradient(1px 1px at 42% 68%, rgba(232, 221, 208, 0.2), transparent 50%),
    radial-gradient(1px 1px at 72% 18%, rgba(232, 221, 208, 0.25), transparent 50%),
    radial-gradient(1px 1px at 88% 76%, rgba(232, 221, 208, 0.2), transparent 50%);
  opacity: 0.55;
  z-index: 0;
}

.frame-content > * { position: relative; z-index: 1; }

.mock-meta {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 24px;
  opacity: 0.85;
}

.frame-tabs {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  gap: 18px;
  padding: 16px 0;
  border-top: 1px solid rgba(168, 145, 122, 0.08);
}

.tab-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(168, 145, 122, 0.25);
  transition: background 0.3s var(--ease-out);
}

.tab-active {
  background: var(--amber);
  box-shadow: 0 0 8px var(--amber-soft);
}

/* ---------- OPENING MOCK ---------- */
.opening-stack {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.opening-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.opening-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--linen-faint);
  margin: 0;
}

.opening-line {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--linen);
  margin: 0;
}

/* ---------- COUNSEL MOCK ---------- */
.counsel-mock {
  padding: 24px 26px 32px;
  gap: 18px;
  justify-content: flex-end;
}

.counsel-ghost {
  margin-bottom: 12px;
}

.counsel-ghost-text {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.92rem;
  line-height: 1.45;
  color: rgba(201, 189, 169, 0.32);
  margin: 0;
}

.counsel-turn {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.counsel-role {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0;
}

.counsel-turn-you .counsel-role {
  color: var(--linen-faint);
}

.counsel-text {
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.55;
  color: var(--linen);
  margin: 0;
}

.counsel-turn-her .counsel-text {
  font-style: italic;
}

.counsel-cursor {
  width: 7px;
  height: 14px;
  background: var(--amber);
  margin-top: 4px;
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ---------- SANCTUM MOCK ---------- */
.sanctum-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sanctum-row {
  display: grid;
  grid-template-columns: 22px 1fr;
  column-gap: 12px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(168, 145, 122, 0.08);
}

.sanctum-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.sanctum-marker {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber);
  margin-top: 9px;
  opacity: 0.7;
}

.sanctum-key {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--linen-faint);
  margin: 0 0 4px;
}

.sanctum-val {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.96rem;
  line-height: 1.5;
  color: var(--linen);
  margin: 0;
}

.sanctum-foot {
  margin-top: auto;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  text-align: center;
  opacity: 0.65;
}

/* ============================================================
   FORM PRIMITIVES — sealed register
   ============================================================ */
.btn {
  appearance: none;
  border: 1px solid var(--amber);
  background: transparent;
  color: var(--amber-glow);
  font-family: var(--font-mono);
  font-size: var(--s-small);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 14px 32px;
  cursor: pointer;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-out);
  z-index: -1;
}

.btn:hover { color: var(--ink); border-color: var(--amber-glow); }
.btn:hover::before { transform: scaleX(1); }
.btn:focus-visible { outline: 1px solid var(--amber-glow); outline-offset: 3px; }

.input {
  appearance: none;
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(168, 145, 122, 0.35);
  color: var(--linen);
  font-family: var(--font-display);
  font-size: var(--s-lead);
  padding: 12px 0;
  transition: border-color 0.3s var(--ease-out);
}

.input::placeholder {
  color: var(--linen-faint);
  font-style: italic;
  opacity: 0.7;
}

.input:focus {
  outline: none;
  border-bottom-color: var(--amber-glow);
}

/* ---------- SELECTION + SCROLLBAR ---------- */
::selection {
  background: var(--amber-soft);
  color: var(--linen);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--ink-edge); border-radius: 0; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  :root {
    --pad-edge: 20px;
    --chrome-h-top: 64px;
    --chrome-h-bot: 70px;
  }

  .deck-top {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .deck-name { display: none; }
  .deck-spacer { display: none; }
  .deck-phrase { justify-self: center; font-size: 1.05rem; }

  .surface-grid {
    grid-template-columns: 1fr;
    gap: var(--gap-md);
    align-content: center;
  }

  .surface-mockup {
    order: 1;
  }

  .surface-caption {
    order: 2;
    text-align: center;
    max-width: 100%;
    align-items: center;
  }

  .preview-frame {
    max-width: 320px;
  }

  .frame-content {
    min-height: 240px;
    padding: 22px 20px 32px;
  }

  .counsel-mock {
    padding: 18px 20px 26px;
  }

  .opening-line, .sanctum-val, .counsel-text {
    font-size: 0.95rem;
  }

  .deck-arrow {
    width: 36px;
    height: 36px;
  }

  .deck-dots {
    gap: 14px;
  }
}

@media (max-height: 700px) {
  .preview-frame {
    max-width: 380px;
  }
  .frame-content {
    min-height: 260px;
    padding: 22px 22px 32px;
  }
  .opening-stack { gap: 16px; }
  .opening-line, .sanctum-val { font-size: 0.95rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}