:root {
  color-scheme: light;
  --bg: #f5efe4;
  --bg-deep: #eadfcd;
  --panel: rgba(255, 250, 243, 0.74);
  --panel-strong: rgba(255, 250, 243, 0.9);
  --ink: #1f2430;
  --ink-soft: #55606f;
  --line: rgba(72, 57, 34, 0.12);
  --line-strong: rgba(72, 57, 34, 0.22);
  --accent: #0f7b68;
  --accent-strong: #0a5f50;
  --accent-soft: rgba(15, 123, 104, 0.12);
  --danger: #b33b46;
  --danger-soft: rgba(179, 59, 70, 0.12);
  --warning: #b36a14;
  --shadow: 0 28px 60px rgba(55, 42, 22, 0.12);
  --shadow-soft: 0 14px 30px rgba(55, 42, 22, 0.08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --content-max: 1240px;
  --transition: 220ms ease;
  font-family: "Avenir Next", "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
}

html[data-theme="night"] {
  color-scheme: dark;
  --bg: #0f141b;
  --bg-deep: #171d27;
  --panel: rgba(21, 29, 39, 0.78);
  --panel-strong: rgba(21, 29, 39, 0.94);
  --ink: #f2eadc;
  --ink-soft: #b5c0cd;
  --line: rgba(222, 208, 183, 0.12);
  --line-strong: rgba(222, 208, 183, 0.22);
  --accent: #55d6b9;
  --accent-strong: #91ebd7;
  --accent-soft: rgba(85, 214, 185, 0.18);
  --danger: #ff7a8b;
  --danger-soft: rgba(255, 122, 139, 0.18);
  --warning: #ffbe62;
  --shadow: 0 28px 60px rgba(0, 0, 0, 0.28);
  --shadow-soft: 0 14px 30px rgba(0, 0, 0, 0.22);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background:
    radial-gradient(circle at top left, rgba(240, 170, 74, 0.16), transparent 28%),
    radial-gradient(circle at 90% 20%, rgba(21, 138, 118, 0.16), transparent 26%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

input,
textarea {
  border: 0;
  outline: 0;
  background: none;
  color: inherit;
}

code {
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: rgba(19, 29, 44, 0.08);
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  font-size: 0.9em;
}

html[data-theme="night"] code {
  background: rgba(255, 255, 255, 0.08);
}

.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.ambient-aurora {
  background:
    radial-gradient(circle at 20% 16%, rgba(255, 210, 140, 0.22), transparent 24%),
    radial-gradient(circle at 78% 22%, rgba(81, 214, 185, 0.2), transparent 26%);
  filter: blur(28px);
}

.ambient-grid {
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size: 28px 28px;
  mix-blend-mode: soft-light;
}

.ambient-glow {
  background: radial-gradient(circle at 50% 100%, rgba(61, 115, 255, 0.12), transparent 30%);
}

.app-shell {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.glass-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.06)),
    var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.hero-shell {
  display: grid;
  gap: 22px;
  padding: 26px;
}

.eyebrow,
.metric-label,
.section-kicker,
.mini-title {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-copy h1,
.section-head h2,
.conference-card h3,
.settings-card h3,
.paper-card h3 {
  font-family: "Iowan Old Style", "Palatino Linotype", "Noto Serif CJK SC", "Songti SC", serif;
}

.hero-copy h1 {
  margin: 0.7rem 0 0;
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  line-height: 0.94;
  letter-spacing: -0.05em;
  max-width: 14ch;
}

.hero-text {
  margin: 1.1rem 0 0;
  max-width: 52rem;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: start;
}

.pill,
.status-tag,
.journal-chip,
.paper-journal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.2);
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 700;
}

.overview-grid {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

.metric-card {
  padding: 20px 22px;
}

.metric-card-accent {
  background:
    linear-gradient(135deg, rgba(15, 123, 104, 0.22), rgba(255, 193, 93, 0.12)),
    var(--panel-strong);
}

.metric-value {
  display: block;
  margin-top: 0.8rem;
  font-size: clamp(1.28rem, 2vw, 1.75rem);
  line-height: 1.15;
}

.metric-note {
  margin: 0.8rem 0 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.tab-strip {
  position: sticky;
  top: 14px;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 18px;
  padding: 10px;
}

.tab-button {
  min-height: 48px;
  border-radius: 16px;
  background: transparent;
  color: var(--ink-soft);
  font-weight: 800;
  transition:
    background var(--transition),
    color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.tab-button.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: white;
  box-shadow: var(--shadow-soft);
}

.tab-button:active,
.action-button:active {
  transform: translateY(1px) scale(0.98);
}

.panel-stack {
  margin-top: 18px;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.section-head {
  display: grid;
  gap: 16px;
  align-items: end;
  margin-bottom: 16px;
}

.section-head h2 {
  margin: 0.45rem 0 0;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.section-actions-inline {
  width: min(100%, 500px);
  flex-wrap: nowrap;
  align-items: stretch;
}

.search-shell {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  width: 100%;
  min-width: 0;
  min-height: 50px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel-strong);
  color: var(--ink-soft);
  box-shadow: var(--shadow-soft);
}

.search-shell span {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.search-shell input {
  width: 100%;
  min-width: 0;
}

.search-shell input::placeholder {
  color: color-mix(in srgb, var(--ink-soft) 80%, transparent);
}

.action-button {
  min-height: 50px;
  padding: 0 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: white;
  font-weight: 800;
  box-shadow: var(--shadow-soft);
  transition:
    transform var(--transition),
    opacity var(--transition),
    box-shadow var(--transition),
    background var(--transition);
}

.action-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.action-button-light {
  background: var(--panel-strong);
  color: var(--ink);
  border: 1px solid var(--line-strong);
}

.action-button-danger {
  background: linear-gradient(135deg, var(--danger), #8f2932);
}

.content-grid {
  display: grid;
  gap: 16px;
}

.content-grid-wide {
  align-items: start;
}

.side-card,
.feed-shell,
.settings-card,
.conference-card {
  padding: 20px;
}

.settings-card-head,
.side-card-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.side-card h3,
.settings-card h3 {
  margin: 0.5rem 0 0;
  font-size: 1.5rem;
}

.journal-chip-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.journal-chip {
  position: relative;
  border-color: color-mix(in srgb, var(--chip-accent) 32%, var(--line));
}

.journal-chip::before {
  content: "";
  width: 9px;
  height: 9px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--chip-accent);
}

.side-card-block {
  margin-top: 20px;
}

.missing-list,
.alert-list {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.alert-item {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.16);
}

.alert-item strong {
  display: block;
  font-size: 0.96rem;
}

.alert-item p {
  margin: 0.4rem 0 0;
  color: var(--ink-soft);
  line-height: 1.55;
}

.feed-shell {
  min-height: 540px;
}

.feed-scroll {
  display: grid;
  gap: 14px;
  max-height: min(78vh, 960px);
  overflow: auto;
  padding-right: 2px;
}

.paper-card {
  position: relative;
  padding: 18px;
  border: 1px solid color-mix(in srgb, var(--card-accent) 30%, var(--line));
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.06)),
    rgba(255, 255, 255, 0.22);
  box-shadow: var(--shadow-soft);
}

html[data-theme="night"] .paper-card,
html[data-theme="night"] .alert-item {
  background: rgba(255, 255, 255, 0.04);
}

.paper-card-head,
.conference-card-head,
.paper-card-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.paper-card-meta {
  flex-wrap: wrap;
  justify-content: flex-start;
  color: var(--ink-soft);
  font-size: 0.84rem;
  padding-right: 52px;
}

.paper-journal {
  border-color: color-mix(in srgb, var(--card-accent) 36%, var(--line));
  color: var(--ink);
}

.paper-card h3,
.conference-card h3 {
  margin: 1rem 0 0;
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  line-height: 1.15;
}

.paper-authors,
.paper-abstract,
.conference-requirements {
  margin-top: 1rem;
}

.paper-authors span,
.paper-abstract span,
.conference-requirements span,
.conference-grid-meta span,
.timeline-item span {
  display: block;
  color: var(--ink-soft);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.paper-authors p,
.paper-abstract p,
.conference-note,
.conference-requirements p {
  margin: 0.5rem 0 0;
  color: var(--ink-soft);
  line-height: 1.68;
}

.paper-actions,
.conference-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 1.2rem;
}

.favorite-button.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border: 1px solid color-mix(in srgb, var(--accent) 36%, var(--line));
}

.favorite-star {
  position: absolute;
  top: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  color: var(--ink-soft);
  font-size: 1.3rem;
  line-height: 1;
  box-shadow: var(--shadow-soft);
  transition:
    transform var(--transition),
    background var(--transition),
    color var(--transition),
    border-color var(--transition);
}

.favorite-star.is-active {
  color: #b36a14;
  background: rgba(240, 170, 74, 0.18);
  border-color: rgba(240, 170, 74, 0.34);
}

.favorite-star:active {
  transform: translateY(1px) scale(0.96);
}

.status-tag {
  min-height: 32px;
  font-size: 0.74rem;
}

.status-tag-good {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-color: color-mix(in srgb, var(--accent) 36%, var(--line));
}

.status-tag-new {
  background: rgba(47, 107, 255, 0.14);
  color: #2f6bff;
  border-color: rgba(47, 107, 255, 0.28);
}

html[data-theme="night"] .status-tag-new {
  color: #9fbeff;
}

.status-tag-favorite {
  background: rgba(240, 170, 74, 0.14);
  color: #b36a14;
  border-color: rgba(240, 170, 74, 0.28);
}

html[data-theme="night"] .status-tag-favorite {
  color: #ffd08a;
}

.conference-grid {
  display: grid;
  gap: 16px;
}

.conference-card {
  border-radius: var(--radius-xl);
}

.conference-note {
  font-size: 0.95rem;
}

.progress-rail {
  position: relative;
  height: 10px;
  margin-top: 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  overflow: hidden;
}

.progress-fill {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 68%, white));
}

.conference-grid-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 1rem;
}

.conference-grid-meta strong,
.timeline-item strong {
  display: block;
  margin-top: 0.35rem;
  line-height: 1.45;
}

.timeline-list {
  display: grid;
  gap: 10px;
  margin-top: 1rem;
}

.timeline-item {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.14);
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: start;
}

.theme-options {
  display: grid;
  gap: 10px;
  margin-top: 1rem;
}

.theme-option,
.toggle-row,
.library-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.theme-option,
.library-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.16);
}

.toggle-row {
  margin-top: 1rem;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.16);
}

.help-text {
  margin: 0.9rem 0 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.library-list {
  display: grid;
  gap: 10px;
  margin-top: 1rem;
}

.favorite-library {
  display: grid;
  gap: 12px;
  margin-top: 1rem;
}

.favorite-panel-shell {
  min-height: 440px;
  padding: 20px;
}

.favorite-item {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.16);
}

html[data-theme="night"] .favorite-item {
  background: rgba(255, 255, 255, 0.04);
}

.favorite-item-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.favorite-item h4 {
  margin: 0.5rem 0 0;
  font-size: 1.08rem;
  line-height: 1.35;
}

.favorite-item p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.65;
}

.favorite-meta,
.favorite-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.favorite-meta {
  align-items: center;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.library-main {
  display: flex;
  gap: 12px;
  align-items: start;
}

.library-main input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
}

.library-main strong {
  display: block;
}

.library-main small {
  display: block;
  margin-top: 0.3rem;
  color: var(--ink-soft);
  line-height: 1.45;
}

.settings-form {
  display: grid;
  gap: 12px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.settings-form h4 {
  margin: 0;
  font-size: 1rem;
}

.settings-form label {
  display: grid;
  gap: 8px;
}

.settings-form span {
  color: var(--ink-soft);
  font-size: 0.83rem;
  font-weight: 700;
}

.settings-form input,
.settings-form textarea {
  width: 100%;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
}

.settings-form textarea {
  resize: vertical;
  min-height: 104px;
}

.settings-form-inline {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
}

.settings-form-inline label {
  min-width: 0;
}

.empty-state,
.empty-copy {
  color: var(--ink-soft);
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 240px;
  padding: 24px;
  text-align: center;
}

.empty-state strong {
  font-size: 1.25rem;
}

.empty-state p,
.empty-copy {
  margin: 0.6rem 0 0;
  line-height: 1.7;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 20;
  max-width: min(88vw, 460px);
  padding: 14px 18px;
  border-radius: 999px;
  background: rgba(18, 25, 34, 0.92);
  color: white;
  text-align: center;
  transform: translate(-50%, 24px);
  opacity: 0;
  pointer-events: none;
  transition:
    transform var(--transition),
    opacity var(--transition);
}

.toast.show {
  transform: translate(-50%, 0);
  opacity: 1;
}

@media (min-width: 720px) {
  .app-shell {
    padding-right: 22px;
    padding-left: 22px;
  }

  .hero-shell {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .overview-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .section-head {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .settings-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    grid-template-areas:
      "appearance journals"
      "conferences journals";
  }

  .settings-grid > :nth-child(1) {
    grid-area: appearance;
  }

  .settings-grid > :nth-child(2) {
    grid-area: journals;
  }

  .settings-grid > :nth-child(3) {
    grid-area: conferences;
  }
}

@media (min-width: 1080px) {
  .settings-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-areas: none;
  }

  .settings-grid > :nth-child(1),
  .settings-grid > :nth-child(2),
  .settings-grid > :nth-child(3) {
    grid-area: auto;
  }
}

@media (min-width: 980px) {
  .content-grid-wide {
    grid-template-columns: 320px minmax(0, 1fr);
  }

  .conference-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .side-card {
    position: sticky;
    top: 96px;
  }
}

@media (max-width: 719px) {
  .app-shell {
    padding-top: 18px;
  }

  .hero-shell,
  .metric-card,
  .side-card,
  .feed-shell,
  .settings-card,
  .conference-card {
    padding: 18px;
  }

  .tab-strip {
    top: 8px;
  }

  .conference-grid-meta {
    grid-template-columns: 1fr;
  }

  .settings-form-inline {
    grid-template-columns: 1fr;
  }

  .section-actions-inline {
    width: 100%;
  }
}