@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:wght@400;500;600&family=JetBrains+Mono:wght@500;700&family=Noto+Sans+SC:wght@400;500;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --listening-light: #f7f7f5;
  --listening-dark: #0d0d0d;
  --listening-black: #000000;
  --listening-line-light: rgba(0, 0, 0, 0.24);
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-display: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  --font-editorial: 'EB Garamond', 'Noto Serif SC', serif;
  --font-mono: 'JetBrains Mono', 'Space Grotesk', monospace;
  --nav-height: 80px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--listening-light);
}

body {
  margin: 0;
}

body.listening-page {
  background: var(--listening-light);
  color: var(--listening-black);
  font-family: var(--font-body);
  line-height: 1.45;
  overflow-x: hidden;
}

a {
  color: inherit;
}

button,
input,
textarea,
audio {
  font: inherit;
}

button,
a,
input,
textarea {
  -webkit-tap-highlight-color: transparent;
}

:where(a, button, input, textarea):focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 4px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.listening-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: var(--nav-height);
  padding: 0 3vw;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
  background: color-mix(in srgb, var(--listening-light) 94%, transparent);
  border-bottom: 1px solid var(--listening-line-light);
  backdrop-filter: blur(10px);
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: clamp(0.72rem, 1.1vw, 0.95rem);
  font-weight: 700;
  letter-spacing: -0.035em;
}

.listening-brand,
.listening-home-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.listening-brand {
  justify-self: start;
  gap: 0.55rem;
}

.listening-brand img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

.listening-nav-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.listening-home-link {
  justify-self: end;
}

.listening-brand:hover,
.listening-home-link:hover,
.listening-footer a:hover {
  text-decoration: underline;
  text-underline-offset: 0.28em;
}

.panel-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.66rem, 0.9vw, 0.82rem);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.listening-stage {
  scroll-margin-top: var(--nav-height);
  background: var(--listening-light);
  color: var(--listening-black);
}

.listening-stage-inner {
  width: min(1500px, 100%);
  margin: 0 auto;
  padding: 0 5vw;
}

.listening-stage-head {
  min-height: 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  padding: clamp(2rem, 4vh, 3rem) 0;
  border-bottom: 1px solid var(--listening-line-light);
  font-family: var(--font-mono);
  font-size: clamp(0.66rem, 0.9vw, 0.8rem);
  letter-spacing: 0.08em;
}

.listening-stage-head h1 {
  margin: clamp(1rem, 2vw, 2rem) 0 0;
  font-family: var(--font-display);
  font-size: clamp(4rem, 9vw, 8rem);
  line-height: 0.72;
  letter-spacing: -0.09em;
}

.listening-stage-head h1 span {
  margin-left: 0.55em;
  font-family: 'EB Garamond', 'Noto Serif SC', serif;
  font-size: 0.32em;
  font-weight: 500;
  letter-spacing: -0.04em;
}

.listening-grid {
  display: grid;
  grid-template-columns: minmax(19rem, 0.72fr) minmax(0, 1.28fr);
  min-height: 100svh;
}

.player-panel {
  border-right: 1px solid var(--listening-line-light);
  padding: clamp(2rem, 4vw, 4rem) clamp(2rem, 4vw, 4rem) 4rem 0;
}

.player-panel-sticky {
  position: sticky;
  top: calc(var(--nav-height) + 2rem);
}

.player-number {
  margin-top: clamp(3rem, 9vw, 8rem);
  font-family: var(--font-display);
  font-size: clamp(7rem, 14vw, 13rem);
  line-height: 0.55;
  color: rgba(0, 0, 0, 0.1);
}

.current-track {
  min-height: 10rem;
  margin-top: 2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--listening-line-light);
}

.current-track strong {
  display: block;
  max-width: 20ch;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.episode-progress {
  display: block;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: rgba(0, 0, 0, 0.58);
}

#audioPlayer {
  width: 100%;
  min-height: 54px;
  margin-top: 2rem;
  color-scheme: light;
  accent-color: var(--listening-black);
}

.action-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 1.25rem;
  border-top: 1px solid var(--listening-line-light);
  border-bottom: 1px solid var(--listening-line-light);
}

.control-btn,
.pagination button {
  min-height: 52px;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.control-btn + .control-btn {
  border-left: 1px solid var(--listening-line-light);
}

.control-btn:hover,
.pagination button:hover:not(:disabled) {
  background: var(--listening-light);
  color: var(--listening-black);
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.library-panel {
  min-width: 0;
  padding: clamp(2rem, 4vw, 4rem) 0 5rem clamp(2rem, 4vw, 4rem);
}

.library-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
}

.library-heading h2 {
  margin: 1rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(3.8rem, 8vw, 8rem);
  line-height: 0.78;
  letter-spacing: -0.075em;
}

.library-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: rgba(0, 0, 0, 0.56);
}

#searchInput {
  width: 100%;
  min-height: 54px;
  margin-top: 3rem;
  padding: 0 0.25rem;
  border: 0;
  border-top: 1px solid var(--listening-line-light);
  border-bottom: 1px solid var(--listening-line-light);
  border-radius: 0;
  background: transparent;
  color: var(--listening-black);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  outline: none;
}

#searchInput::placeholder {
  color: rgba(0, 0, 0, 0.48);
}

#searchInput:focus-visible {
  border-color: var(--listening-black);
}

#searchInput:focus-visible,
.comment-field input:focus-visible,
.comment-field textarea:focus-visible,
.comment-submit:focus-visible,
.comment-load-more:focus-visible,
.control-btn:focus-visible,
.pagination button:focus-visible,
.admin-login-form input:focus-visible,
.admin-login-form button:focus-visible,
.admin-delete-button:focus-visible {
  outline: 3px solid var(--listening-black);
  outline-offset: 3px;
  box-shadow: 0 0 0 2px var(--listening-light);
}

.audio-list {
  margin-top: 1.5rem;
  border-top: 1px solid var(--listening-line-light);
}

.audio-item {
  min-height: 96px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  column-gap: 1.5rem;
  align-items: center;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--listening-line-light);
}

.audio-item h4 {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.85rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.audio-item p {
  margin: 0.45rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: rgba(0, 0, 0, 0.56);
}

.play-btn {
  grid-column: 2;
  grid-row: 1 / 3;
  min-width: 84px;
  min-height: 44px;
  border: 1px solid var(--listening-line-light);
  border-radius: 0;
  background: transparent;
  color: var(--listening-black);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.audio-item:hover,
.audio-item.playing {
  background: var(--listening-light);
  color: var(--listening-black);
  box-shadow: inset 4px 0 0 var(--listening-black);
}

.audio-item:hover {
  margin: 0 -1rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

.audio-item:hover p,
.audio-item.playing p {
  color: rgba(0, 0, 0, 0.62);
}

.audio-item:hover .play-btn,
.audio-item.playing .play-btn {
  border-color: rgba(0, 0, 0, 0.45);
  color: var(--listening-black);
}

.fact {
  min-height: 72px;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--listening-line-light);
  color: rgba(0, 0, 0, 0.58);
}

.fact strong,
.fact span {
  display: block;
}

.pagination {
  min-height: 76px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--listening-line-light);
}

.pagination button:last-child {
  justify-self: end;
}

.pagination button:disabled {
  opacity: 0.28;
  cursor: not-allowed;
}

.page-info {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: rgba(0, 0, 0, 0.58);
}

.comments-section {
  padding: clamp(4rem, 8vw, 8rem) 0;
  border-top: 1px solid var(--listening-line-light);
}

.comments-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: clamp(2rem, 4vw, 4rem);
  border-bottom: 1px solid var(--listening-line-light);
}

.comments-heading h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.8rem, 10vw, 10rem);
  line-height: 0.75;
  letter-spacing: -0.075em;
}

.comments-heading h2 span {
  font-family: var(--font-editorial);
  font-size: 0.42em;
  font-weight: 500;
  letter-spacing: -0.04em;
}

.comment-form {
  display: grid;
  grid-template-columns: minmax(12rem, 0.45fr) minmax(20rem, 1fr) auto;
  align-items: end;
  gap: 0;
  border-bottom: 1px solid var(--listening-line-light);
}

.comment-field {
  display: grid;
  gap: 0.65rem;
  padding: 1.25rem;
  border-right: 1px solid var(--listening-line-light);
}

.comment-field label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.comment-field input,
.comment-field textarea {
  width: 100%;
  min-height: 44px;
  padding: 0.65rem 0;
  border: 0;
  border-bottom: 1px solid var(--listening-line-light);
  border-radius: 0;
  background: transparent;
  color: var(--listening-black);
  outline: 0;
}

.comment-field textarea {
  min-height: 88px;
  resize: vertical;
}

.comment-submit,
.comment-load-more {
  min-height: 44px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--listening-black);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.comment-submit {
  min-width: 9rem;
  align-self: stretch;
}

.comment-submit:hover:not(:disabled),
.comment-load-more:hover {
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.comment-submit:disabled {
  opacity: 0.42;
  cursor: wait;
}

.comment-load-more:disabled {
  opacity: 0.42;
  cursor: wait;
}

.comment-status {
  min-height: 3.5rem;
  margin: 0;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--listening-line-light);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: rgba(0, 0, 0, 0.58);
}

.comment-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.comment-item {
  display: grid;
  grid-template-columns: minmax(10rem, 0.45fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: clamp(1.5rem, 3vw, 2.5rem) 0;
  border-bottom: 1px solid var(--listening-line-light);
}

.comment-meta {
  display: grid;
  align-content: start;
  gap: 0.45rem;
}

.comment-meta strong {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.comment-meta time {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: rgba(0, 0, 0, 0.56);
}

.comment-item p {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.75;
}

.comment-load-more {
  width: 100%;
  min-height: 64px;
  border-bottom: 1px solid var(--listening-line-light);
}

.comment-load-more[hidden] {
  display: none;
}

.listening-footer {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-top: 1px solid var(--listening-line-light);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.listening-footer a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.admin-main {
  width: min(1200px, 100%);
  min-height: calc(100svh - var(--nav-height));
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 7rem) 5vw;
}

.admin-heading {
  padding-bottom: clamp(2rem, 5vw, 4rem);
  border-bottom: 1px solid var(--listening-line-light);
}

.admin-heading h1 {
  margin: 1rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 8rem);
  line-height: 0.85;
  letter-spacing: -0.075em;
}

.admin-heading h1 span {
  display: block;
  margin-top: 0.5em;
  font-family: var(--font-editorial);
  font-size: 0.3em;
  font-weight: 500;
  letter-spacing: -0.03em;
}

.admin-gate,
.admin-panel {
  padding: clamp(2rem, 5vw, 4rem) 0;
  border-bottom: 1px solid var(--listening-line-light);
}

.admin-gate h2,
.admin-panel h2 {
  margin: 0 0 2rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.05em;
}

.admin-login-form {
  display: grid;
  grid-template-columns: minmax(8rem, 0.35fr) minmax(12rem, 1fr) auto;
  border: 1px solid var(--listening-line-light);
}

.admin-login-form label,
.admin-login-form input,
.admin-login-form button {
  min-height: 64px;
  padding: 1rem;
  border: 0;
  background: transparent;
  color: inherit;
}

.admin-login-form label {
  display: flex;
  align-items: center;
  border-right: 1px solid var(--listening-line-light);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

.admin-login-form input {
  min-width: 0;
}

.admin-login-form button,
.admin-delete-button {
  border-left: 1px solid var(--listening-line-light);
  background: var(--listening-black);
  color: #f7f7f5;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

.admin-comment-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--listening-line-light);
}

.admin-comment-item {
  display: grid;
  grid-template-columns: minmax(9rem, 0.35fr) minmax(0, 1fr) auto;
  align-items: stretch;
  border-bottom: 1px solid var(--listening-line-light);
}

.admin-comment-item .comment-meta,
.admin-comment-item p {
  margin: 0;
  padding: 1.5rem;
}

.admin-comment-item p {
  border-left: 1px solid var(--listening-line-light);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.7;
}

.admin-delete-button {
  min-width: 88px;
  border: 0;
  border-left: 1px solid var(--listening-line-light);
}

.admin-status {
  min-height: 3rem;
  margin: 0;
  padding: 1rem 0;
}

@media (max-width: 900px) {
  :root {
    --nav-height: 58px;
  }

  .listening-nav {
    min-height: var(--nav-height);
    padding: 0 1rem;
    grid-template-columns: 1fr auto;
    gap: 0.75rem;
  }

  .listening-brand span,
  .listening-nav-title {
    display: none;
  }

  .listening-brand img {
    width: 24px;
    height: 24px;
  }

  .listening-home-link {
    font-size: 0.72rem;
  }

  .listening-stage-inner {
    padding: 0 1rem;
  }

  .listening-stage-head {
    min-height: 0;
    padding: 2rem 0;
  }

  .listening-stage-head > span:last-child {
    display: none;
  }

  .listening-stage-head h1 {
    font-size: clamp(4.5rem, 24vw, 7rem);
  }

  .listening-stage-head h1 span {
    display: block;
    margin: 1.25rem 0 0;
  }

  .listening-grid {
    display: block;
    min-height: 0;
  }

  .player-panel {
    padding: 2rem 0 3rem;
    border-right: 0;
    border-bottom: 1px solid var(--listening-line-light);
  }

  .player-panel-sticky {
    position: static;
  }

  .player-number {
    margin-top: 3rem;
    font-size: 8rem;
  }

  .current-track {
    min-height: 7rem;
  }

  .current-track strong {
    max-width: none;
    font-size: clamp(2.5rem, 12vw, 4.2rem);
  }

  .library-panel {
    padding: 3rem 0 4rem;
  }

  .comments-section {
    padding: 4rem 0;
  }

  .comments-heading {
    display: block;
    padding-bottom: 2rem;
  }

  .comments-heading h2 {
    max-width: 100%;
    margin-top: 1rem;
    font-size: clamp(3rem, 16vw, 6rem);
  }

  .comments-heading h2 span {
    display: block;
    margin-top: 0.65rem;
  }

  .comment-form {
    display: block;
  }

  .comment-field {
    padding: 1.25rem 0;
    border-right: 0;
    border-bottom: 1px solid var(--listening-line-light);
  }

  .comment-submit {
    width: 100%;
    min-height: 56px;
  }

  .comment-item {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .library-heading h2 {
    font-size: clamp(3.6rem, 19vw, 6rem);
  }

  #searchInput {
    margin-top: 2rem;
  }

  .audio-item {
    min-height: 88px;
    column-gap: 0.75rem;
  }

  .audio-item h4 {
    font-size: 1.2rem;
  }

  .play-btn {
    min-width: 70px;
  }

  .listening-footer {
    min-height: 110px;
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
    gap: 0.5rem;
  }

  .admin-login-form,
  .admin-comment-item {
    grid-template-columns: 1fr;
  }

  .admin-login-form label,
  .admin-login-form input,
  .admin-login-form button,
  .admin-comment-item p,
  .admin-delete-button {
    border-left: 0;
    border-right: 0;
    border-bottom: 1px solid var(--listening-line-light);
  }

  .admin-delete-button {
    min-height: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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