/* ============================================================================
   RESET + TOKENS
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input { font: inherit; }
[hidden] { display: none !important; }

:root {
  /* Act 1 — classified */
  --ink-0:  #05060a;
  --ink-1:  #090b12;
  --ink-2:  #0d1019;
  --line:   rgba(150, 170, 190, 0.14);
  --line-2: rgba(150, 170, 190, 0.28);
  --term:   #63d2a2;
  --term-dim: rgba(99, 210, 162, 0.55);
  --term-faint: rgba(99, 210, 162, 0.12);
  --alert:  #ff5f56;
  --grey:   #8b95a4;

  /* Act 2 — warm (defaults; chapters override --tint / --tint-soft / --accent) */
  --rose-bg:   #fff4f0;
  --rose-bg-2: #ffe9e3;
  --plum:      #3a2230;
  --plum-soft: #6b4a58;
  --accent:    #e0819a;
  --gold:      #c19a54;
  --tint:      var(--rose-bg);
  --tint-soft: var(--rose-bg-2);

  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Fraunces", ui-serif, Georgia, "Times New Roman", serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --pad: clamp(1.25rem, 5vw, 4rem);
}

body {
  font-family: var(--font-sans);
  background: var(--ink-0);
  color: #e7ebf0;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* ============================================================================
   ACT 1 · TERMINAL
   ========================================================================== */
#terminal { background: radial-gradient(120% 90% at 50% 0%, var(--ink-2), var(--ink-0) 70%); }

.term-scanlines {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background: repeating-linear-gradient(0deg, rgba(255,255,255,0.03) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}
.term-vignette {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(130% 100% at 50% 45%, transparent 55%, rgba(0,0,0,0.6));
}

.term-wrap {
  position: relative;
  width: min(680px, 92vw);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent 40%), var(--ink-1);
  box-shadow: 0 40px 120px -40px rgba(0,0,0,0.9), inset 0 1px 0 rgba(255,255,255,0.04);
  overflow: hidden;
}

.term-head {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--grey);
}
.term-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--term); box-shadow: 0 0 10px var(--term);
  animation: pulse 2.4s var(--ease) infinite;
}
.term-head__title { color: #c8d0da; }
.term-head__status { margin-left: auto; color: var(--term-dim); }

.term-body { padding: 1.25rem clamp(1rem, 3vw, 1.75rem) 1.5rem; }

.term-log {
  font-family: var(--font-mono);
  font-size: clamp(0.72rem, 2.6vw, 0.84rem);
  line-height: 1.85;
  color: var(--term-dim);
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 1.85em;
}
.term-log .ok { color: var(--term); }
.term-log .warn { color: #e0b062; }
.term-log .cursor::after {
  content: "▋"; color: var(--term);
  animation: blink 1s step-end infinite;
}

.dossier {
  margin-top: 1.25rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  display: grid;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: clamp(0.7rem, 2.5vw, 0.8rem);
}
.dossier__row { display: flex; gap: 0.75rem; align-items: baseline; }
.dossier__label {
  color: var(--grey); letter-spacing: 0.14em;
  min-width: 7.5rem; flex-shrink: 0;
}
@media (max-width: 480px) {
  .dossier__row { flex-direction: column; gap: 0.15rem; }
  .dossier__label { min-width: 0; }
}
.dossier__value { color: #cfd6df; }
.dossier__value.is-masked { color: var(--term-dim); letter-spacing: 0.05em; }
.dossier__value.is-clear { color: var(--term); }

.term-auth { margin-top: 1.4rem; }
.term-auth__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  color: var(--grey);
  margin-bottom: 0.55rem;
}
.term-auth__row {
  display: flex; align-items: center; gap: 0.5rem;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  background: rgba(0,0,0,0.25);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.term-auth__row:focus-within {
  border-color: var(--term-dim);
  box-shadow: 0 0 0 3px var(--term-faint);
}
.term-auth__prompt { font-family: var(--font-mono); color: var(--term); }
.term-auth input {
  flex: 1; min-width: 0;
  background: none; border: 0; outline: none;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.3em;
  color: #eef2f6;
}
.term-auth button {
  display: grid; place-items: center;
  width: 30px; height: 30px;
  border: 1px solid var(--line-2); border-radius: 6px;
  color: var(--term-dim);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.term-auth button:hover { color: var(--term); border-color: var(--term-dim); background: var(--term-faint); }
.term-auth__msg {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  min-height: 1.2em;
  color: var(--grey);
}
.term-auth__msg.is-error { color: var(--alert); }
.term-auth__msg.is-hint  { color: #e0b062; }

.term-wrap.is-denied { animation: shake 0.4s var(--ease); }
.term-wrap.is-denied .term-auth__row { border-color: var(--alert); box-shadow: 0 0 0 3px rgba(255,95,86,0.14); }

/* ============================================================================
   THE REVEAL
   ========================================================================== */
#reveal { background: var(--ink-0); z-index: 20; overflow: hidden; }

.reveal-decrypt { text-align: center; padding: var(--pad); position: relative; z-index: 2; }
.reveal-decrypt__label {
  font-family: var(--font-mono);
  font-size: clamp(0.7rem, 2.6vw, 0.85rem);
  letter-spacing: 0.3em;
  color: var(--term);
}
.reveal-decrypt__stream {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 6vw, 1.6rem);
  letter-spacing: 0.12em;
  color: #eef2f6;
  word-break: break-word;
}
.reveal-decrypt__stream.is-confirmed {
  font-family: var(--font-serif);
  letter-spacing: 0.01em;
  font-size: clamp(1.4rem, 8vw, 2.4rem);
  color: #fff;
}

.reveal-bloom {
  position: absolute;
  left: 50%; top: 50%;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: radial-gradient(circle, #ffe6df, #ffd9d0 22%, var(--accent) 45%, #f7b4c2 62%, transparent 74%);
  transform: translate(-50%, -50%) scale(0);
  z-index: 1;
}

/* ============================================================================
   COVER
   ========================================================================== */
#cover {
  z-index: 15;
  background:
    radial-gradient(120% 80% at 50% 12%, var(--rose-bg-2), var(--rose-bg) 55%, #ffdfd7 100%);
  color: var(--plum);
}
.cover-inner { text-align: center; padding: var(--pad); }
.cover-kicker {
  font-family: var(--font-mono);
  font-size: clamp(0.7rem, 3vw, 0.85rem);
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--accent);
}
.cover-title {
  margin-top: 0.8rem;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(3rem, 17vw, 8rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--plum);
}
.cover-hint {
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--plum-soft);
  animation: floaty 2.8s ease-in-out infinite;
}

/* ============================================================================
   ACT 2 · DECK / CHAPTERS
   ========================================================================== */
.deck {
  position: fixed; inset: 0; z-index: 10;
  background: var(--tint);
  color: var(--plum);
  transition: background 0.9s var(--ease);
}
.deck-track {
  display: flex;
  height: 100%;
  width: 100%;
  transition: transform 0.85s var(--ease);
  will-change: transform;
}

.chapter {
  position: relative;
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  overflow: hidden auto;
  overscroll-behavior: contain;
  display: grid;
}
.chapter::-webkit-scrollbar { width: 0; height: 0; }
.chapter__bg { position: absolute; inset: 0; z-index: 0; }

/* progress bar — redacted-blocks motif */
.progress {
  position: absolute; top: 0; left: 0; right: 0;
  z-index: 6;
  display: flex; gap: 3px;
  padding: 10px clamp(10px, 4vw, 22px);
}
.progress span {
  flex: 1; height: 3px; border-radius: 2px;
  background: currentColor; opacity: 0.16;
  transition: opacity 0.5s var(--ease);
}
.progress span.is-done { opacity: 0.4; }
.progress span.is-active { opacity: 0.9; }

.nav-arrow {
  position: absolute; top: 50%; z-index: 6;
  transform: translateY(-50%);
  width: 46px; height: 46px;
  display: grid; place-items: center;
  font-size: 1.6rem; line-height: 1;
  color: var(--plum);
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  backdrop-filter: blur(6px);
  opacity: 0; transition: opacity 0.4s var(--ease), background 0.2s;
}
.deck:hover .nav-arrow { opacity: 0.7; }
.nav-arrow:hover { opacity: 1; background: rgba(255,255,255,0.6); }
.nav-arrow--prev { left: clamp(8px, 2vw, 24px); }
.nav-arrow--next { right: clamp(8px, 2vw, 24px); }
.nav-arrow[disabled] { opacity: 0 !important; pointer-events: none; }

.deck-hint {
  position: absolute; left: 0; right: 0; bottom: calc(14px + env(safe-area-inset-bottom));
  z-index: 6; text-align: center;
  font-family: var(--font-mono);
  font-size: 0.64rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--plum-soft); opacity: 0.7;
  pointer-events: none;
  transition: opacity 0.6s var(--ease);
}
.deck-hint.is-hidden { opacity: 0; }

@media (hover: none) { .nav-arrow { display: none; } }

/* ---- shared chapter furniture ------------------------------------------- */
.ch-index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
}
.ch-message {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.015em;
  white-space: pre-line;
  text-wrap: balance;
  color: var(--plum);
}

/* frames -------------------------------------------------------------------*/
.phone-frame {
  position: relative;
  border-radius: clamp(28px, 5vw, 44px);
  padding: clamp(7px, 1.4vw, 11px);
  background: linear-gradient(160deg, #1c1c22, #050506);
  box-shadow:
    0 40px 90px -30px rgba(60, 20, 40, 0.45),
    inset 0 0 0 1px rgba(255,255,255,0.06);
}
.phone-frame::after {
  content: ""; position: absolute; top: clamp(10px,1.8vw,15px); left: 50%;
  width: 34%; max-width: 130px; height: 5px; border-radius: 3px;
  background: rgba(255,255,255,0.14); transform: translateX(-50%);
}
.phone-frame img, .phone-frame .ph-media {
  border-radius: clamp(22px, 4vw, 34px);
  width: 100%; height: 100%; object-fit: cover;
}

.mat-card {
  background: #0a0a0c;
  padding: clamp(14px, 3vw, 26px);
  border-radius: 4px;
  box-shadow: 0 50px 120px -40px rgba(40, 10, 25, 0.5), 0 0 0 1px rgba(0,0,0,0.4);
}
.mat-card img { border-radius: 2px; }

/* placeholder look (before a real image is dropped in) -------------------- */
img.is-missing { visibility: hidden; }
.img-slot { position: relative; overflow: hidden; background: var(--tint-soft); }
.img-slot > img { position: absolute; inset: 0; width: 100%; height: 100%; }
.img-slot::before {
  content: attr(data-label);
  position: absolute; inset: 0;
  display: grid; place-content: center; text-align: center;
  padding: 1.5rem;
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--plum-soft); opacity: 0.55;
  background:
    repeating-linear-gradient(45deg, rgba(0,0,0,0.03) 0 12px, transparent 12px 24px);
}
.img-slot.has-img::before { display: none; }

/* ---- layout: notification --------------------------------------------- */
.ch--notification { place-items: center; }
.ch--notification .ch-inner {
  display: flex; flex-direction: column; align-items: center;
  gap: clamp(1.75rem, 5vw, 3rem);
  padding: var(--pad);
  max-width: 720px; width: 100%;
}
.ch--notification .notif {
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 30px 70px -28px rgba(60,20,40,0.4), 0 0 0 1px rgba(0,0,0,0.05);
}
.ch--notification .notif img { width: 100%; }
.ch--notification .ch-message { font-size: clamp(1.6rem, 5.5vw, 2.5rem); text-align: center; text-wrap: balance; }

/* ---- layout: portrait (phone screenshot) ----------------------------- */
.ch--portrait .ch-inner {
  display: grid;
  grid-template-columns: 1fr;
  align-content: center; justify-items: center;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  padding: calc(var(--pad) + 1.5rem) var(--pad);
  min-height: 100%;
}
.ch--portrait .media {
  height: min(62vh, 560px);
  max-width: 82vw;
  aspect-ratio: var(--ratio, 1000 / 2100);
}
.ch--portrait .ch-copy { text-align: center; max-width: 30ch; }
.ch--portrait .ch-message { font-size: clamp(1.5rem, 5.5vw, 2.4rem); margin-top: 0.8rem; }

@media (min-width: 768px) {
  .ch--portrait .ch-inner {
    grid-template-columns: auto minmax(16rem, 1fr);
    align-items: center; justify-items: start;
    gap: clamp(2.5rem, 6vw, 6rem);
    max-width: 1080px; margin: 0 auto;
  }
  .ch--portrait .media { height: min(76vh, 660px); }
  .ch--portrait .ch-copy { text-align: left; max-width: 22ch; }
  .ch--portrait .ch-message { font-size: clamp(1.9rem, 3.2vw, 2.9rem); }
}

/* ---- layout: editorial (full-bleed photo) --------------------------- */
.ch--editorial .ch-bg-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ch--editorial .ch-scrim {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(25,8,16,0.22) 0%, transparent 26%, rgba(25,8,16,0.35) 60%, rgba(20,6,14,0.78) 100%);
}
.ch--editorial .ch-inner {
  position: relative; z-index: 2;
  align-self: end;
  padding: var(--pad);
  padding-bottom: calc(var(--pad) + 2.5rem);
  max-width: 720px;
}
.ch--editorial .ch-index { color: #ffd9d0; }
.ch--editorial .ch-message { color: #fff; font-size: clamp(1.8rem, 6vw, 3.4rem); margin-top: 0.7rem; text-shadow: 0 2px 30px rgba(0,0,0,0.35); }
@media (min-width: 900px) {
  .ch--editorial .ch-inner { padding-bottom: calc(var(--pad) + 3rem); }
  .ch--editorial .ch-message { font-size: clamp(2.4rem, 4.4vw, 4rem); }
}

/* ---- layout: dark (late-night) ------------------------------------- */
.ch--dark { background: #050406; color: #f0e9ec; }
.ch--dark .ch-inner {
  display: grid; align-content: center; justify-items: center;
  gap: clamp(2rem, 6vw, 3.5rem);
  padding: calc(var(--pad) + 1.5rem) var(--pad); text-align: center; min-height: 100%;
}
.ch--dark .media {
  position: relative;
  height: min(52vh, 460px);
  max-width: 82vw;
  aspect-ratio: var(--ratio, 540 / 1200);
}
.ch--dark .media img {
  object-fit: cover; width: 100%; height: 100%; border-radius: 10px;
  filter: brightness(1.22) contrast(1.04);
}
.ch--dark .media {
  border-radius: 10px;
  box-shadow:
    0 0 120px 30px rgba(200,180,215,0.13),
    0 0 40px 4px rgba(220,200,230,0.10),
    0 0 0 1px rgba(255,255,255,0.06);
}
.ch--dark .ch-index { color: #d9b3bd; }
.ch--dark .ch-message { color: #f6eef0; font-size: clamp(1.7rem, 6vw, 3rem); }
@media (min-width: 900px) {
  .ch--dark .media { height: min(70vh, 620px); max-width: 40vw; }
}

/* ---- layout: quote (black card callback) --------------------------- */
.ch--quote { background: #060607; color: #ececf0; }
.ch--quote .ch-inner {
  display: grid; align-content: center; justify-items: center;
  gap: clamp(2rem, 6vw, 3rem);
  padding: calc(var(--pad) + 1.5rem) var(--pad); text-align: center; min-height: 100%;
}
.ch--quote .media { height: min(50vh, 430px); max-width: 84vw; aspect-ratio: var(--ratio, 3 / 4); }
.ch--quote .media img { object-fit: contain; width: 100%; height: 100%; }
.ch--quote .ch-message {
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 3.4vw, 1.05rem);
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--accent);
}
@media (min-width: 900px) {
  .ch--quote .media { height: min(66vh, 560px); max-width: 44vw; }
}

/* ---- layout: letter (finale) -------------------------------------- */
.ch--letter { overflow-y: auto; overflow-x: hidden; display: block; -webkit-overflow-scrolling: touch; }
.ch--letter .letter-hero {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: clamp(2.5rem, 8vh, 6rem) auto 0;
  padding: 0 var(--pad);
}
.ch--letter .letter-hero .img-slot,
.ch--letter .letter-hero img {
  position: static;
  width: 100%; height: auto;
  aspect-ratio: var(--ratio, 1512 / 1008);
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 40px 90px -40px rgba(60, 20, 40, 0.35);
}
.ch--letter .letter-hero__scrim { display: none; }
.ch--letter .letter-body {
  position: relative;
  max-width: 40rem;
  margin: clamp(2.5rem, 7vh, 4.5rem) auto 0;
  padding: 0 var(--pad) calc(var(--pad) + 3rem);
  text-align: left;
}
.ch--letter .reveal-on-scroll {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.ch--letter .reveal-on-scroll.is-in { opacity: 1; transform: none; }
.ch--letter .ch-index { display: block; text-align: center; margin-bottom: 2rem; }
.ch--letter .letter-p {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 3.6vw, 1.5rem);
  line-height: 1.62;
  color: var(--plum);
  margin-bottom: 1.4rem;
}
.ch--letter .letter-p--close {
  font-style: italic;
  color: var(--accent);
}
.ch--letter .letter-signoff {
  margin-top: 2.5rem;
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 4.5vw, 1.9rem);
  color: var(--plum);
}
.ch--letter .letter-end {
  margin-top: 3.5rem; text-align: center;
  font-family: var(--font-mono);
  font-size: 0.66rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--plum-soft);
}

/* ============================================================================
   PER-CHAPTER PALETTE (tone)
   ========================================================================== */
.tone-playful  { --tint:#fff3ee; --tint-soft:#ffe4dc; --accent:#ef8fa6; --plum:#40202f; --plum-soft:#6f4a5a; }
.tone-bright   { --tint:#fff0f4; --tint-soft:#ffe0ec; --accent:#ff7bac; --plum:#3d1c33; --plum-soft:#6e4560; }
.tone-tender   { --tint:#fdf1ef; --tint-soft:#f6e2df; --accent:#d98aa0; --plum:#3c2531; --plum-soft:#6b4f59; }
.tone-rose     { --tint:#fff2ef; --tint-soft:#ffe6e0; --accent:#e0819a; --plum:#3a2230; --plum-soft:#6b4a58; }
.tone-midnight { --tint:#0a0810; --tint-soft:#161320; --accent:#d9b3bd; --plum:#f2e9ec; --plum-soft:#b596a1; }
.tone-ink      { --tint:#f4eef0; --tint-soft:#e7dee2; --accent:#c98aa0; --plum:#2a2130; --plum-soft:#5f5566; }

/* ============================================================================
   KEYFRAMES
   ========================================================================== */
@keyframes blink { 50% { opacity: 0; } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }
@keyframes shake {
  10%,90% { transform: translateX(-2px); }
  30%,70% { transform: translateX(4px); }
  50% { transform: translateX(-6px); }
}
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(6px); } }

/* ============================================================================
   REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .deck-track { transition: none; }
}