:root {
  --bg-deep: #211611;
  --bg-mid: #2c1f17;
  --bg-glow: #3a2a1d;
  --cream: #ece0cb;
  --cream-soft: #cbb9a0;
  --muted: #8c7a64;
  --gold: #d39a44;
  --gold-soft: #c8893a;
  --gold-deep: #9a6a26;
  --line: rgba(196, 160, 110, 0.22);

  --serif-display: "Playfair Display", Georgia, serif;
  --serif-body: "Cormorant Garamond", Georgia, serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--serif-body);
  color: var(--cream);
  background:
    radial-gradient(120% 90% at 50% 38%, var(--bg-glow) 0%, var(--bg-mid) 42%, var(--bg-deep) 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#app {
  height: 100%;
}

/* --------------------------------------------------------------------------- */
/* View switching                                                              */
/* --------------------------------------------------------------------------- */
.view {
  display: none;
  height: 100vh;
  height: 100dvh;
  width: 100vw;
  overflow: hidden;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(1.5rem, 4vh, 3rem) clamp(1.25rem, 4vw, 2rem);
  animation: fade-in 0.7s ease both;
}

/* Generous, delay-free touch targets across all interactive elements */
button,
.shelf__book {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.view.is-active {
  display: flex;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------- */
/* Shared typography                                                           */
/* --------------------------------------------------------------------------- */
.label-caps {
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 500;
}

/* Landing hero - "Reading Buddy" is the dominant element on the page */
.brand-title {
  font-family: var(--serif-display);
  font-weight: 600;
  font-size: clamp(2.8rem, 6.5vw, 5rem);
  line-height: 1;
  letter-spacing: 0.015em;
  color: var(--cream);
  text-shadow: 0 2px 30px rgba(211, 154, 68, 0.12);
}

.shelf__tagline {
  font-family: var(--serif-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.15rem, 2.6vw, 1.7rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--gold-soft);
  margin: 1rem auto 0;
  max-width: 30rem;
}

.lede {
  max-width: 34rem;
  margin: 1.5rem auto 0;
  font-size: 1.18rem;
  line-height: 1.6;
  color: var(--cream-soft);
}

/* --------------------------------------------------------------------------- */
/* Ornamental dividers                                                         */
/* --------------------------------------------------------------------------- */
.ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  width: min(26rem, 70vw);
  margin: 1.1rem auto;
  color: var(--gold-deep);
}

.ornament__line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.ornament__dot {
  font-size: 1rem;
  color: var(--gold-soft);
  opacity: 0.8;
}

.ornament__icon {
  width: 1.8rem;
  height: 1.8rem;
  opacity: 0.7;
  filter: brightness(0) saturate(100%) invert(72%) sepia(13%) saturate(965%) hue-rotate(357deg) brightness(90%) contrast(85%);
}

.ornament--labeled .label-caps {
  white-space: nowrap;
}

/* --------------------------------------------------------------------------- */
/* VIEW 1: Shelf                                                               */
/* --------------------------------------------------------------------------- */
.shelf__intro {
  text-align: center;
}

.shelf__label {
  margin: clamp(2rem, 6vh, 4.5rem) auto 1.25rem;
  font-size: clamp(1rem, 1.8vw, 1.3rem);
  font-weight: 700;
  letter-spacing: 0.38em;
  color: #6b4a2e;
}

/* Bookshelf frame: gold top rail + side posts + a wooden ledge the books rest on */
.shelf__case {
  position: relative;
  width: min(50rem, 92vw);
  margin: 0 auto;
  padding: clamp(0.85rem, 2vw, 1.4rem) clamp(1rem, 3vw, 2rem) 0;
  border-top: 2px solid rgba(34, 22, 13, 0.8);
  border-left: 2px solid rgba(34, 22, 13, 0.8);
  border-right: 2px solid rgba(34, 22, 13, 0.8);
  border-radius: 8px 8px 0 0;
  background: linear-gradient(180deg, rgba(38, 25, 15, 0.4), rgba(26, 17, 10, 0.2));
}

.shelf__row {
  display: flex;
  gap: clamp(0.7rem, 1.6vw, 1.3rem);
  align-items: flex-end;
  justify-content: center;
  flex-wrap: nowrap;
  width: 100%;
}

/* The wooden plank the volumes sit on */
.shelf__ledge {
  height: 1.25rem;
  margin: 0 calc(-1 * clamp(1rem, 3vw, 2.4rem));
  border-top: 1px solid rgba(211, 154, 68, 0.4);
  border-radius: 0 0 8px 8px;
  background: linear-gradient(180deg, #45301f 0%, #2c1d12 60%, #1d130c 100%);
  box-shadow:
    inset 0 1px 0 rgba(211, 154, 68, 0.25),
    0 18px 28px rgba(0, 0, 0, 0.55);
}

/* --------------------------------------------------------------------------- */
/* CSS book covers                                                             */
/* --------------------------------------------------------------------------- */
.book-cover {
  position: relative;
  width: 8.25rem;
  aspect-ratio: 141 / 211;
  border-radius: 4px;
  overflow: hidden;
  background: #1c130d;
  box-shadow:
    0 1px 0 rgba(206, 170, 110, 0.15),
    0 16px 30px rgba(0, 0, 0, 0.45);
}

.book-cover__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(255, 255, 255, 0.1) 0%, transparent 32%);
  pointer-events: none;
}

/* Spine variant used on the shelf */
.shelf__book {
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  transition: transform 0.4s ease, filter 0.4s ease;
  filter: brightness(0.86);
}

.shelf__book .book-cover {
  width: clamp(6.5rem, 9.5vw, 9.5rem);
}

/* Lift on pointer hover (desktop) and on tap/focus (touch + keyboard) */
@media (hover: hover) {
  .shelf__book:hover {
    transform: translateY(-0.75rem);
    filter: brightness(1.08);
  }

  .shelf__book:hover .book-cover {
    box-shadow:
      0 0 0 1px rgba(211, 154, 68, 0.45),
      0 22px 40px rgba(0, 0, 0, 0.55);
  }
}

.shelf__book:focus-visible,
.shelf__book:active {
  transform: translateY(-0.75rem);
  filter: brightness(1.08);
  outline: none;
}

.shelf__book:focus-visible .book-cover,
.shelf__book:active .book-cover {
  box-shadow:
    0 0 0 1px rgba(211, 154, 68, 0.45),
    0 22px 40px rgba(0, 0, 0, 0.55);
}

/* --------------------------------------------------------------------------- */
/* VIEW 2: Session Setup                                                       */
/* --------------------------------------------------------------------------- */
.setup__brand {
  font-family: var(--serif-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  color: var(--gold-soft);
  text-align: center;
  margin-bottom: 0.8rem;
  letter-spacing: 0.02em;
}

.setup__brand + .ornament {
  margin-bottom: clamp(2rem, 6vh, 3.5rem);
}

.setup__card {
  width: min(560px, 100%);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: clamp(1.6rem, 4vw, 2.6rem);
  background: linear-gradient(180deg, rgba(58, 42, 29, 0.35), rgba(33, 22, 17, 0.2));
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
  text-align: center;
}

.setup__head {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  text-align: left;
}

.setup__head .book-cover {
  flex: none;
  width: 6rem;
}

.setup__title {
  font-family: var(--serif-display);
  font-weight: 500;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  line-height: 1.1;
  color: var(--cream);
}

.setup__byline {
  font-style: italic;
  font-size: 1.05rem;
  color: var(--cream-soft);
  margin: 0.4rem 0 0.7rem;
}

.setup__reading {
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 500;
  margin-top: 0.4rem;
}

.setup__chapter-label {
  font-size: 1.5rem;
  color: var(--cream-soft);
  margin: 0.9rem 0 0.3rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------- */
/* Chapter stepper                                                             */
/* --------------------------------------------------------------------------- */
.stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.5rem, 5vw, 2.2rem);
  margin: 0.2rem 0 1.8rem;
}

.stepper__btn {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--cream-soft);
  font-family: var(--serif-display);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

@media (hover: hover) {
  .stepper__btn:hover {
    border-color: var(--gold-soft);
    color: var(--gold);
  }
}

.stepper__btn:active {
  transform: scale(0.92);
  border-color: var(--gold-soft);
  color: var(--gold);
}

.stepper__value {
  font-family: var(--serif-display);
  font-size: clamp(2.6rem, 7vw, 3.4rem);
  font-weight: 500;
  color: var(--cream);
  min-width: 2.4rem;
}

/* --------------------------------------------------------------------------- */
/* Buttons                                                                     */
/* --------------------------------------------------------------------------- */
.btn-primary {
  width: 100%;
  min-height: 3.25rem;
  padding: 1rem 1.5rem;
  border: none;
  border-radius: 6px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold-soft) 100%);
  color: #2a1a0c;
  font-family: var(--serif-body);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s ease, filter 0.3s ease;
  box-shadow: 0 12px 26px rgba(154, 106, 38, 0.35);
}

@media (hover: hover) {
  .btn-primary:hover {
    filter: brightness(1.06);
    box-shadow: 0 16px 32px rgba(154, 106, 38, 0.5);
  }
}

.btn-primary:active {
  transform: translateY(1px) scale(0.995);
}

.link-back {
  margin-top: 1.5rem;
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  color: var(--muted);
  font-family: var(--serif-body);
  font-size: 1rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: color 0.3s ease;
}

@media (hover: hover) {
  .link-back:hover {
    color: var(--cream-soft);
  }
}

.link-back:active {
  color: var(--cream-soft);
}

.btn-primary {
  min-height: 3.25rem;
}

/* --------------------------------------------------------------------------- */
/* VIEW 3: Reading session                                                     */
/* --------------------------------------------------------------------------- */
.reading-session__head {
  text-align: center;
}

.reading-session__author {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--cream-soft);
  margin-bottom: 0.4rem;
}

.reading-session__title {
  font-family: var(--serif-display);
  font-weight: 500;
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  color: var(--cream);
  line-height: 1.1;
}

.reading-session__chapter {
  color: var(--gold-soft);
}

/* Make the chapter ornament/divider larger and more prominent */
.reading-session__head .ornament {
  margin: 1rem auto;
  width: min(32rem, 80vw);
}

.reading-session__head .ornament .label-caps {
  font-size: 0.95rem;
  letter-spacing: 0.35em;
}

/* Chapter controls in reading session */
.reading-session__chapter-control {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin: 1.5rem 0 0.5rem;
}

.reading-session__chapter-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--cream-soft);
  font-family: var(--serif-display);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

@media (hover: hover) {
  .reading-session__chapter-btn:hover {
    border-color: var(--gold-soft);
    color: var(--gold);
  }
}

.reading-session__chapter-btn:active {
  transform: scale(0.92);
  border-color: var(--gold-soft);
  color: var(--gold);
}

.reading-session__chapter-num {
  font-family: var(--serif-display);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--cream);
  min-width: 2rem;
  text-align: center;
}

/* Mic orb - dominant, square, and capped by both width and height so the
   session screen fits the viewport without scrolling */
.mic {
  position: relative;
  width: min(80vw, 20rem, 42vh);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  margin: clamp(1.25rem, 3.5vh, 2.5rem) 0;
}

.mic__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(196, 160, 110, 0.18);
  pointer-events: none;
}

.mic__ring--outer {
  width: 100%;
  height: 100%;
}

.mic__ring--mid {
  width: 77%;
  height: 77%;
  border-color: rgba(196, 160, 110, 0.26);
}

.mic__button {
  position: relative;
  width: 53%;
  height: 53%;
  min-width: 9rem;
  min-height: 9rem;
  border-radius: 50%;
  border: 1px solid rgba(211, 154, 68, 0.4);
  cursor: pointer;
  display: grid;
  place-items: center;
  color: var(--gold);
  background:
    radial-gradient(circle at 50% 38%, rgba(211, 154, 68, 0.22), rgba(58, 42, 29, 0.5) 60%, rgba(33, 22, 17, 0.6));
  box-shadow:
    0 0 50px rgba(211, 154, 68, 0.18),
    inset 0 0 30px rgba(211, 154, 68, 0.12);
  transition: transform 0.3s ease, box-shadow 0.4s ease, color 0.3s ease;
}

@media (hover: hover) {
  .mic__button:hover {
    transform: scale(1.03);
    box-shadow:
      0 0 70px rgba(211, 154, 68, 0.3),
      inset 0 0 36px rgba(211, 154, 68, 0.18);
  }
}

.mic__button:active {
  transform: scale(0.97);
}

.mic__icon {
  width: 30%;
  height: auto;
}

.reading-session__status {
  font-size: 1.18rem;
  font-style: italic;
  color: var(--cream-soft);
  min-height: 1.6em;
  transition: color 0.3s ease;
}

.recording-cancel {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.85rem;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid rgba(242, 217, 166, 0.35);
  border-radius: 50%;
  background: rgba(20, 12, 8, 0.35);
  color: rgba(242, 217, 166, 0.85);
  cursor: pointer;
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
}

.recording-cancel__icon {
  width: 1.35rem;
  height: 1.35rem;
}

.recording-cancel:hover {
  color: var(--gold);
  border-color: rgba(211, 154, 68, 0.55);
  background: rgba(20, 12, 8, 0.5);
}

.recording-cancel:active {
  opacity: 0.85;
}

.reading-session__footer {
  margin-top: clamp(1.25rem, 3vh, 2rem);
}

/* Mic states ---------------------------------------------------------------- */
.mic[data-state="recording"] .mic__button {
  color: #f2d9a6;
  box-shadow:
    0 0 90px rgba(211, 154, 68, 0.5),
    inset 0 0 40px rgba(211, 154, 68, 0.28);
}

.mic[data-state="recording"] .mic__ring {
  animation: pulse-ring 2s ease-out infinite;
}

.mic[data-state="recording"] .mic__ring--mid {
  animation-delay: 0.5s;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.85);
    opacity: 0.7;
  }
  100% {
    transform: scale(1.25);
    opacity: 0;
  }
}

.mic[data-state="processing"] .mic__button {
  animation: breathe 1.8s ease-in-out infinite;
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(0.97);
    box-shadow: 0 0 40px rgba(211, 154, 68, 0.18), inset 0 0 24px rgba(211, 154, 68, 0.1);
  }
  50% {
    transform: scale(1.04);
    box-shadow: 0 0 80px rgba(211, 154, 68, 0.4), inset 0 0 40px rgba(211, 154, 68, 0.24);
  }
}

.mic[data-state="processing"] .mic__button {
  cursor: progress;
}

.mic[data-state="playing"] .mic__ring {
  animation: pulse-ring 2.6s ease-out infinite;
}

.mic[data-state="playing"] .mic__button {
  color: #f2d9a6;
  cursor: pointer;
}

.mic[data-state="ready-to-play"] .mic__ring {
  animation: pulse-ring 2.6s ease-out infinite;
}

.mic[data-state="ready-to-play"] .mic__button {
  color: #f2d9a6;
}

.mic[data-state="error"] .mic__button {
  border-color: rgba(180, 90, 70, 0.6);
  color: #d99;
}

/* --------------------------------------------------------------------------- */
/* Responsive - MOBILE (targets iPhone widths ~390px)                          */
/* --------------------------------------------------------------------------- */
@media (max-width: 480px) {
  /* On phones the content (a stacked shelf) is taller than the viewport, so
     let the page flow and scroll from the top instead of locking to 100vh.
     Otherwise the centered content overflows and clips the header. */
  html,
  body {
    height: auto;
    min-height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
  }

  #app {
    height: auto;
    min-height: 100dvh;
    overflow: visible;
  }

  .view {
    height: auto;
    min-height: 100dvh;
    overflow: visible;
    justify-content: flex-start;
  }

  /* Shelf: stack volumes into a single centered column */
  .shelf__row {
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
  }

  .shelf__book .book-cover {
    width: min(58vw, 13rem);
    height: auto;
  }

  /* A column doesn't rest on one plank - soften the ledge into a base rail */
  .shelf__ledge {
    height: 0.5rem;
  }

  .shelf__case {
    padding-top: 1.5rem;
  }

  /* Keep the hero prominent but prevent overflow on narrow screens */
  .brand-title {
    font-size: clamp(2.5rem, 13vw, 3.6rem);
  }

  .setup__head {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .setup__card {
    text-align: center;
  }

  /* Bigger, easier chapter stepper targets on touch */
  .stepper__btn {
    width: 3.25rem;
    height: 3.25rem;
    font-size: 1.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .view,
  .mic__ring,
  .mic__button {
    animation: none !important;
  }
}