:root {
  --font-family-ui: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #262421;
  --panel: rgba(49, 46, 43, 0.94);
  --panel-border: rgba(96, 92, 87, 0.82);
  --text: #dedbd5;
  --muted: #c8c4be;
  --text-disabled: rgba(222, 219, 213, 0.45);
  --font-weight-ui: 700;
  --accent: #a44a3f;
  --accent-dark: #7b3028;
  --green: #2f6f4f;
  --shadow: 0 14px 34px rgba(0, 0, 0, 0.32);
  --light-square: #f0d9b5;
  --dark-square: #b58863;
  --board-frame: #2f2c29;
  --board-frame-border: #4d4945;
  --control-bg: #3c3836;
  --control-border: rgba(96, 92, 87, 0.42);
  --button-primary-bg: var(--green);
  --button-primary-border: color-mix(in srgb, var(--green) 72%, #ffffff 28%);
  --button-secondary-bg: rgba(63, 59, 55, 0.92);
  --button-secondary-border: rgba(130, 126, 121, 0.44);
  --button-secondary-text: var(--text);
  --button-ghost-border: rgba(130, 126, 121, 0.34);
  --button-danger-bg: color-mix(in srgb, var(--accent) 84%, #7b3028 16%);
  --button-danger-border: color-mix(in srgb, var(--accent) 76%, #ffffff 24%);
  --button-text: var(--text);
  --button-radius: 12px;
  --button-padding-y: 8px;
  --button-padding-x: 10px;
  --control-height-sm: 34px;
  --control-height-md: 40px;
  --control-height-lg: 48px;
  --icon-button-size-sm: 42px;
  --icon-button-size-md: 50px;
  --icon-button-size-lg: 58px;
  --action-icon-graphic-size: 1.4rem;
  --mobile-action-icon-graphic-size: 2rem;
  --mobile-action-icon-color: #f3efe7;
  --mobile-action-icon-disabled-opacity: 0.62;
  --font-size-control: 0.78rem;
  --font-size-control-sm: 0.72rem;
  --font-size-modal-title: 1rem;
  --font-size-modal-title-main: 1.05rem;
  --font-size-modal-copy: 0.86rem;
  --modal-overlay-bg: #211f1c;
  --modal-card-bg: rgba(58, 54, 50, 0.97);
  --modal-card-border: rgba(96, 92, 87, 0.5);
  --modal-card-radius: 18px;
  --modal-card-padding: 16px;
  --modal-card-gap: 12px;
  --modal-card-padding-tight: 14px;
  --modal-card-gap-tight: 10px;
  --modal-card-padding-canvas: 10px;
  --modal-card-gap-canvas: 10px;
  --modal-card-padding-desktop: 16px;
  --modal-card-gap-desktop: 10px;
  --modal-card-padding-roomy: 18px;
  --modal-card-gap-roomy: 14px;
  --modal-card-padding-mobile: 10px;
  --modal-card-gap-mobile: 8px;
  --modal-card-radius-mobile: 12px;
  --modal-action-gap: 8px;
  --modal-max-compact: 520px;
  --modal-max-wide: 760px;
  --modal-max-large: 860px;
  --modal-max-setup-desktop: 900px;
  --modal-max-xl: 980px;
  --modal-form-label-min: 168px;
  --modal-form-control-min: 120px;
  --modal-form-control-max: 250px;
  --modal-form-row-gap: 10px;
  --modal-panel-padding: 10px;
  --modal-panel-gap: 8px;
  --modal-panel-radius: 12px;
  --modal-panel-padding-desktop: 12px;
  --modal-panel-gap-desktop: 10px;
  --modal-panel-radius-desktop: 14px;
  --modal-form-gap-desktop: 8px;
  --modal-form-row-gap-desktop: 12px;
  --modal-action-gap-desktop: 10px;
  --modal-icon-button-size-desktop: 58px;
  --modal-control-height-desktop: 40px;
  --modal-control-height-roomy: 48px;
  --modal-control-padding-desktop: 8px 10px;
  --modal-control-padding-roomy: 10px 12px;
  --modal-control-padding-icon-roomy: 10px 8px;
  --modal-control-padding-comfort-desktop: 9px 11px;
  --modal-control-font-size-desktop: 0.82rem;
  --modal-control-font-size-roomy: 1rem;
  --modal-control-font-size-roomy-alt: 0.95rem;
  --modal-control-radius-desktop: 12px;
  --modal-copy-font-size-desktop: 0.9rem;
  --modal-copy-line-height-desktop: 1.36;
  --modal-detail-font-size-desktop: 0.8rem;
  --modal-detail-line-height-desktop: 1.38;
  --modal-support-font-size-desktop: 0.86rem;
  --modal-support-line-height-desktop: 1.24;
  --modal-helper-font-size-desktop: 0.68rem;
  --modal-helper-line-height-desktop: 1.22;
  --modal-label-font-size-desktop: 0.84rem;
  --modal-label-line-height-desktop: 1.24;
  --modal-emphasis-font-size-desktop: 0.9rem;
  --modal-inline-button-height-desktop: 34px;
  --modal-inline-button-padding-desktop: 6px 10px;
  --modal-inline-button-font-size-desktop: 0.76rem;
  --modal-inline-button-width-desktop: 72px;
  --font-size-modal-title-mobile: clamp(1.1rem, 6vw, 1.5rem);
  --line-height-modal-title-mobile: 1.1;
  --font-size-modal-copy-mobile: 0.92rem;
  --line-height-modal-copy-mobile: 1.28;
  --scrollbar-size: 8px;
  --scrollbar-thumb: rgba(130, 126, 121, 0.6);
}

@media (max-width: 920px) {
  body.webapp-standalone .app-shell {
    padding-top: 4px !important;
  }

  body.webapp-standalone #mainApp .hero {
    gap: 8px !important;
    align-content: start !important;
  }

  body.webapp-standalone #mainApp .hero-copy,
  body.webapp-standalone #mainApp .hero-actions {
    padding-top: 10px !important;
  }
}

@media (max-width: 920px) and (display-mode: standalone) {
  .app-shell {
    padding-top: 4px !important;
  }

  #mainApp .hero {
    gap: 8px !important;
    align-content: start !important;
  }

  #mainApp .hero-copy,
  #mainApp .hero-actions {
    padding-top: 10px !important;
  }
}

/* Keep full-canvas content popups truly angular (no rounded outer frame). */
#libraryModal > .full-canvas-content-modal-card,
#onlineGamesReviewModal > .full-canvas-content-modal-card,
#repertoireAnalysisModal > .full-canvas-content-modal-card,
#criticalPositionsReportModal > .full-canvas-content-modal-card {
  margin: 0 auto !important;
  border: none !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}

* {
  box-sizing: border-box;
  scrollbar-width: none;
}

[hidden] {
  display: none !important;
}

*::-webkit-scrollbar {
  width: 0;
  height: 0;
}

*::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 999px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

html {
  background-color: #181715;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-family-ui);
  font-weight: var(--font-weight-ui);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(92, 86, 80, 0.18), transparent 30%),
    linear-gradient(160deg, #1f1d1b 0%, #262421 42%, #181715 100%);
  font-size: 14px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* Main page fit: no page-level scrollbar, internal hero scroll (hidden) if needed */
body:has(#mainApp:not([hidden])) {
  overflow: hidden;
}

#mainApp.app-shell {
  height: 100dvh;
  max-height: 100dvh;
  overflow: hidden;
}

#mainApp .dashboard {
  height: 100%;
  min-height: 0;
}

#mainApp .hero {
  height: 100%;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
}

#mainApp .hero::-webkit-scrollbar,
#mainApp .hero:hover::-webkit-scrollbar {
  width: 0;
  height: 0;
}

body.app-booting #authStartPage,
body.app-booting #mainApp {
  display: none !important;
}

#bootStatusPage .auth-card {
  text-align: center;
}

.auth-start-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
}

.auth-card {
  width: min(420px, calc(100vw - 32px));
  max-width: calc(100vw - 32px);
  display: grid;
  gap: 10px;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.auth-title {
  margin: 0;
  text-align: center;
  font-size: clamp(1.05rem, 2.2vw, 1.4rem);
  letter-spacing: 0.08em;
}

.auth-subtitle {
  margin: 0;
  color: var(--muted);
  text-align: center;
}

.auth-field {
  grid-template-columns: 1fr;
}

.auth-panel {
  display: grid;
  gap: 10px;
}

.auth-panel[hidden] {
  display: none;
}

.auth-secondary-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.auth-legal-confirmation {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 9px;
  align-items: start;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
}

.auth-legal-confirmation input {
  margin-top: 3px;
}

.auth-legal-confirmation a,
.auth-legal-links a,
.account-legal-links a,
.landing-footer a {
  color: #9ac7aa;
  font-weight: 400;
}

.auth-terms-copy {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
}

.auth-legal-links {
  display: flex;
  justify-content: center;
  gap: 14px;
  font-size: 0.72rem;
}

.link-button {
  width: auto;
  min-height: 0;
  padding: 3px 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  text-decoration: underline;
  box-shadow: none;
}

.link-button:hover {
  background: transparent;
  color: var(--text);
}

.auth-error {
  margin: 0;
  color: #e29a9a;
  font-size: 0.78rem;
}

.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;
}

.position-metadata {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.position-metadata-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  min-width: 0;
}

.position-metadata-badge {
  display: inline-block;
  min-width: 0;
  max-width: 100%;
  padding: 2px 7px;
  border: 1px solid rgba(130, 126, 121, 0.48);
  border-radius: 999px;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.position-metadata-badge--critical {
  border-color: rgba(214, 156, 61, 0.82);
  background: rgba(154, 101, 28, 0.28);
  color: #f1d39d;
}

.position-metadata-badge--line {
  border-color: rgba(47, 111, 79, 0.82);
  background: rgba(47, 111, 79, 0.22);
  color: var(--text);
}

button.position-metadata-badge--note {
  min-height: 0;
  margin: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

button.position-metadata-badge--note:hover {
  transform: none;
  border-color: var(--accent);
  color: var(--text);
}

.position-metadata-note {
  display: -webkit-box;
  margin: 0;
  max-width: 100%;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.3;
  overflow-wrap: anywhere;
  white-space: pre-line;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: var(--position-note-lines, 2);
  line-clamp: var(--position-note-lines, 2);
}

button.position-metadata-note-button {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 3px;
  width: 100%;
  min-width: 0;
  min-height: 0;
  margin: 0;
  padding: 1px 2px;
  overflow: hidden;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
}

.position-metadata-note-button .position-metadata-note {
  width: 100%;
  min-width: 0;
}

button.position-metadata-note-button:hover {
  transform: none;
}

.position-metadata-note-open {
  align-self: flex-start;
  color: var(--accent);
  font-size: 0.62rem;
  line-height: 1.15;
  white-space: nowrap;
}

.critical-position-note-preview {
  --position-note-lines: 3;
}

.action-icon-button.critical-position-active {
  border-color: rgba(214, 156, 61, 0.9);
  background: rgba(154, 101, 28, 0.42);
  color: #f5dba8;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.action-icon-button.metadata-active {
  border-color: rgba(47, 111, 79, 0.88);
  background: rgba(47, 111, 79, 0.3);
}

.library-critical-button[data-count] {
  position: relative;
}

.library-critical-button[data-count]::after {
  content: attr(data-count);
  position: absolute;
  top: 3px;
  right: 4px;
  display: grid;
  place-items: center;
  min-width: 16px;
  height: 16px;
  padding-inline: 3px;
  border-radius: 999px;
  background: rgba(154, 101, 28, 0.95);
  color: #fff5e2;
  font-size: 0.58rem;
  line-height: 1;
}


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

h1,
h2,
h3,
h4,
h5,
h6,
strong,
b {
  font-weight: var(--font-weight-ui);
}

.app-shell {
  width: min(528px, calc(100vw - 18px));
  max-width: calc(100vw - 18px);
  margin: 0 auto;
  padding: 10px 0 14px;
}

/* Main page readability uplift (desktop only) without touching modal proportions */
@media (min-width: 921px) {
  #mainApp.app-shell {
    width: min(640px, calc(100% - 24px));
    padding: 14px 0 18px;
  }

  #mainApp .hero {
    gap: 16px;
  }

  #mainApp .hero-copy,
  #mainApp .hero-actions,
  #mainApp .hero-menu {
    padding: 18px;
  }

  #mainApp .hero-copy {
    padding: 12px 14px;
  }

  #mainApp .hero-title-inline {
    font-size: clamp(1.08rem, 1.75vw, 1.38rem);
    line-height: 1.16;
  }

  #mainApp .logout-button {
    min-width: 104px;
    padding: 8px 12px;
    font-size: 0.78rem;
    line-height: 1.15;
  }

  #mainApp .global-header-action,
  #mainApp .global-account-button {
    min-width: 40px;
    width: 40px;
    height: 40px;
  }

  #mainApp .global-help-button {
    left: 58px;
  }

  #mainApp .global-getting-started-button {
    left: 108px;
    width: auto;
    min-width: 40px;
  }

  #mainApp .hero-menu {
    gap: 12px;
  }

  #mainApp .hero-actions {
    gap: 10px;
  }

  #mainApp .hero-section-subtitle {
    font-size: 0.74rem;
  }

  #mainApp .hero-menu .config-grid {
    gap: 10px;
  }

  #mainApp .hero-menu .config-grid .config-field {
    gap: 8px;
    font-size: 0.88rem;
  }

  #mainApp .hero-menu .config-grid .config-field span {
    font-size: 0.68rem;
    line-height: 1.24;
    letter-spacing: 0.07em;
  }

  #mainApp .hero-menu .config-grid .config-field select,
  #mainApp .hero-menu .config-grid .config-field input[type="number"] {
    width: 276px;
    min-height: 40px;
    padding: 9px 11px;
    font-size: 0.9rem;
  }

  #mainApp .hero .library-open-button {
    min-height: 40px;
    padding: 8px 10px;
    font-size: 0.9rem;
    line-height: 1.2;
  }
}

/* Extra fit on shorter desktop viewports to avoid bottom clipping on main page */
@media (min-width: 921px) and (max-height: 920px) {
  #mainApp.app-shell {
    padding: 10px 0 12px;
  }

  #mainApp .hero {
    gap: 12px;
  }

  #mainApp .hero-copy,
  #mainApp .hero-actions,
  #mainApp .hero-menu {
    padding: 14px;
  }

  #mainApp .hero-copy {
    padding: 10px 12px;
  }

  #mainApp .hero-menu .config-grid {
    gap: 8px;
  }

  #mainApp .hero-menu .config-grid .config-field {
    gap: 6px;
  }

  #mainApp .hero-menu .config-grid .config-field select,
  #mainApp .hero-menu .config-grid .config-field input[type="number"] {
    min-height: 36px;
    padding: 8px 10px;
  }

  #mainApp .hero .library-open-button {
    min-height: 36px;
    padding: 7px 9px;
  }
}

.hero,
.dashboard {
  display: grid;
  gap: 14px;
}

.hero {
  grid-template-columns: 1fr;
  margin-bottom: 0;
}

.dashboard {
  grid-template-columns: minmax(340px, 1fr);
  align-items: start;
}

.left-column {
  display: grid;
  gap: 10px;
}

.panel,
.hero-copy,
.hero-actions,
.hero-menu {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.hero-copy,
.hero-actions,
.hero-menu,
.panel {
  padding: 16px;
}

.hero-copy {
  padding: 10px 12px;
  align-self: start;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.app-community-actions {
  justify-self: center;
  margin-top: -4px;
  display: grid;
  justify-items: center;
  gap: 2px;
}

.support-link {
  appearance: none;
  padding: 0;
  border: 0;
  background: none;
  color: #9ac7aa;
  font-family: inherit;
  font-size: 0.74rem;
  font-weight: 400;
  line-height: 1.25;
  text-decoration: none;
  cursor: pointer;
}

.support-link:hover {
  color: #bee0ca;
  text-decoration: underline;
}

.feedback-modal-card {
  width: min(480px, calc(100vw - 24px));
}

.message-form-field :is(input, textarea) {
  width: 100%;
  border: 1px solid var(--control-border);
  border-radius: var(--button-radius);
  padding: var(--button-padding-y) var(--button-padding-x);
  background: var(--control-bg);
  color: var(--text);
}

.message-form-field textarea {
  resize: vertical;
}

.message-form-status {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.3;
}

.message-form-status.error {
  color: #e29a9a;
}

.message-form-status.success {
  color: #7fe39f;
}

.global-account-actions {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
}

.logout-button {
  min-width: 88px;
  padding: 6px 10px;
  font-size: 0.7rem;
  line-height: 1.1;
}

.global-account-button {
  min-width: 34px;
  width: 34px;
  height: 34px;
  min-height: 34px;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  color: var(--text);
}

.global-account-button:hover {
  transform: none;
  opacity: 0.82;
}

.global-header-action {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  min-width: 34px;
  width: 34px;
  height: 34px;
  min-height: 34px;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  color: var(--text);
  line-height: 1;
}

.global-header-action:hover {
  transform: translateY(-50%);
  opacity: 0.82;
}

.global-settings-button {
  left: 8px;
}

.global-help-button {
  left: 50px;
}

.global-getting-started-button {
  left: 92px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: auto;
  min-width: 34px;
  padding: 0 7px;
}

.global-getting-started-icon {
  display: grid;
  place-items: center;
}

.global-getting-started-icon .action-icon-graphic {
  width: 19px;
  height: 19px;
}

.global-getting-started-label {
  display: grid;
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 0.92;
  text-align: left;
}

.global-getting-started-button[data-tour-complete="false"]::after {
  content: "";
  align-self: flex-start;
  width: 5px;
  height: 5px;
  margin: 7px 0 0 -3px;
  border-radius: 50%;
  background: #67c596;
  box-shadow: 0 0 0 2px rgba(103, 197, 150, 0.16);
}

.prompt-label {
  margin: 0 0 5px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.68rem;
  color: var(--muted);
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(1.6rem, 3.2vw, 2.5rem);
  line-height: 1;
  margin-bottom: 10px;
}

.hero-title-inline {
  width: 100%;
  font-size: clamp(0.92rem, 1.5vw, 1.18rem);
  line-height: 1.15;
  margin-bottom: 0;
  font-weight: 700;
  letter-spacing: 0.08em;
}

h2 {
  margin-bottom: 0;
}

.sidebar-value,
#promptText {
  color: var(--muted);
  line-height: 1.4;
}

#promptText.prompt-text--alternative {
  display: block;
  width: fit-content;
  max-width: 100%;
  color: var(--text);
  background: var(--control-bg);
  border: 0;
  border-radius: 6px;
  padding: 0;
  box-shadow: 0 0 0 2px var(--control-bg), 0 0 0 3px var(--control-border);
}


.status-attention-success,
.status-attention-info,
.status-attention-warning,
.status-attention-error {
  border-radius: 8px;
  animation-duration: 1100ms;
  animation-timing-function: ease;
  animation-fill-mode: both;
}

.status-attention-success {
  animation-name: statusAttentionSuccessPulse;
}

.status-attention-info {
  animation-name: statusAttentionInfoPulse;
}

.status-attention-warning {
  animation-name: statusAttentionWarningPulse;
}

.status-attention-error {
  animation-name: statusAttentionErrorPulse;
}

@keyframes statusAttentionSuccessPulse {
  0% { background-color: rgba(55, 120, 84, 0.62); box-shadow: 0 0 0 1px rgba(133, 214, 166, 0.7) inset, 0 0 18px rgba(97, 177, 130, 0.4); color: var(--text); }
  40% { background-color: rgba(55, 120, 84, 0.44); box-shadow: 0 0 0 1px rgba(133, 214, 166, 0.48) inset, 0 0 12px rgba(97, 177, 130, 0.24); color: var(--text); }
  100% { background-color: transparent; box-shadow: none; color: inherit; }
}

@keyframes statusAttentionInfoPulse {
  0% { background-color: rgba(64, 96, 132, 0.6); box-shadow: 0 0 0 1px rgba(164, 195, 235, 0.68) inset, 0 0 18px rgba(112, 148, 194, 0.38); color: var(--text); }
  40% { background-color: rgba(64, 96, 132, 0.42); box-shadow: 0 0 0 1px rgba(164, 195, 235, 0.45) inset, 0 0 12px rgba(112, 148, 194, 0.23); color: var(--text); }
  100% { background-color: transparent; box-shadow: none; color: inherit; }
}

@keyframes statusAttentionWarningPulse {
  0% { background-color: rgba(132, 112, 66, 0.6); box-shadow: 0 0 0 1px rgba(224, 197, 125, 0.66) inset, 0 0 18px rgba(196, 165, 93, 0.36); color: var(--text); }
  40% { background-color: rgba(132, 112, 66, 0.42); box-shadow: 0 0 0 1px rgba(224, 197, 125, 0.44) inset, 0 0 12px rgba(196, 165, 93, 0.22); color: var(--text); }
  100% { background-color: transparent; box-shadow: none; color: inherit; }
}

@keyframes statusAttentionErrorPulse {
  0% { background-color: rgba(128, 66, 66, 0.62); box-shadow: 0 0 0 1px rgba(225, 139, 139, 0.7) inset, 0 0 18px rgba(204, 109, 109, 0.4); color: var(--text); }
  40% { background-color: rgba(128, 66, 66, 0.44); box-shadow: 0 0 0 1px rgba(225, 139, 139, 0.48) inset, 0 0 12px rgba(204, 109, 109, 0.25); color: var(--text); }
  100% { background-color: transparent; box-shadow: none; color: inherit; }
}

.header-task {
  margin: 6px 0 0;
  font-size: 0.86rem;
}


.hero-menu {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  align-items: start;
}

.getting-started-page h4,
.getting-started-page h5,
.getting-started-page p,
.guided-tour-tooltip h3,
.guided-tour-tooltip p {
  margin: 0;
}

.getting-started-hero-icon,
.getting-started-tool-icon,
.getting-started-guidance-note > span {
  display: grid;
  place-items: center;
  color: var(--text);
}

.getting-started-modal-card {
  width: min(720px, calc(100vw - 24px));
  max-width: min(720px, calc(100vw - 24px));
  min-height: min(590px, calc(100dvh - 48px));
  max-height: calc(100dvh - 24px);
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  gap: 18px;
  padding: 24px;
  overflow: hidden;
}

.getting-started-wizard-header,
.getting-started-wizard-footer,
.guided-tour-tooltip-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.getting-started-wizard-header {
  align-items: flex-start;
}

.getting-started-eyebrow,
.getting-started-page-kicker,
.getting-started-choice-badge,
.guided-tour-tooltip-header > span {
  color: color-mix(in srgb, var(--green) 82%, white);
  font-size: 0.64rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.getting-started-wizard-header h3 {
  margin: 3px 0 0;
  font-size: 1.15rem;
  line-height: 1.2;
}

.getting-started-progress-track {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.getting-started-progress-track > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green), #55a77e);
  transition: width 180ms ease;
}

.getting-started-pages,
.getting-started-page {
  min-height: 0;
}

.getting-started-pages {
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.getting-started-page {
  display: grid;
  justify-items: center;
  align-content: start;
  gap: 10px;
  animation: getting-started-page-in 180ms ease both;
  text-align: center;
}

@keyframes getting-started-page-in {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.getting-started-hero-icon {
  display: grid;
  width: 58px;
  height: 58px;
  margin-bottom: 2px;
  border: 1px solid color-mix(in srgb, var(--green) 55%, transparent);
  border-radius: 18px;
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.12), transparent 45%),
    color-mix(in srgb, var(--green) 70%, #24211f);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.24);
}

.getting-started-hero-icon .action-icon-graphic {
  width: 30px;
  height: 30px;
  stroke-width: 1.8;
}

.getting-started-page h4 {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  line-height: 1.2;
}

.getting-started-page-lead {
  max-width: 580px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.getting-started-cycle,
.getting-started-improvement-loop {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 7px;
  margin: 8px 0 2px;
}

.getting-started-cycle span,
.getting-started-improvement-loop span {
  padding: 8px 12px;
  border: 1px solid rgba(116, 111, 105, 0.5);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.035);
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 750;
}

.getting-started-cycle i,
.getting-started-improvement-loop i {
  color: color-mix(in srgb, var(--green) 75%, var(--muted));
  font-style: normal;
  font-weight: 900;
}

.getting-started-reassurance {
  max-width: 540px;
  padding: 10px 13px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.035);
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.4;
}

.getting-started-page-action {
  width: min(360px, 100%);
  margin-top: 4px;
}

.getting-started-page-action button {
  width: 100%;
  min-height: 44px;
}

.getting-started-no-repertoire-link {
  margin-top: 2px;
  font-size: 0.76rem;
}

.getting-started-choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
  width: 100%;
  margin-top: 4px;
}

.getting-started-choice-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 560px;
}

.getting-started-choice,
.getting-started-tool {
  border: 1px solid rgba(106, 101, 95, 0.42);
  background: rgba(255, 255, 255, 0.025);
}

.getting-started-choice {
  position: relative;
  display: grid;
  align-content: start;
  gap: 7px;
  min-width: 0;
  padding: 14px 12px 12px;
  border-radius: 14px;
  text-align: left;
}

.getting-started-choice--recommended {
  border-color: color-mix(in srgb, var(--green) 70%, transparent);
  background: color-mix(in srgb, var(--green) 11%, rgba(255, 255, 255, 0.025));
}

.getting-started-choice-badge {
  min-height: 1em;
}

.getting-started-choice h5,
.getting-started-tool h5 {
  font-size: 0.82rem;
  line-height: 1.25;
}

.getting-started-choice p,
.getting-started-tool p {
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.35;
}

.getting-started-choice button {
  align-self: end;
  width: 100%;
  min-height: 36px;
  margin-top: 4px;
}

.getting-started-inline-link {
  display: inline;
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 0;
  color: color-mix(in srgb, var(--green) 78%, white);
  background: transparent;
  font: inherit;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.14em;
}

.getting-started-inline-link:hover,
.getting-started-inline-link:focus-visible {
  color: var(--text);
  background: transparent;
}

.getting-started-guidance-note {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 9px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid rgba(106, 101, 95, 0.35);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.025);
  text-align: left;
}

.getting-started-guidance-note > span {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: color-mix(in srgb, var(--green) 28%, transparent);
}

.getting-started-guidance-note .action-icon-graphic {
  width: 18px;
  height: 18px;
}

.getting-started-guidance-note p {
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.4;
}

.getting-started-tool-grid {
  display: grid;
  gap: 8px;
  width: 100%;
  margin-top: 4px;
}

.getting-started-tool {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 13px;
  text-align: left;
}

.getting-started-tool-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--green) 24%, transparent);
}

.getting-started-tool-icon .action-icon-graphic {
  width: 20px;
  height: 20px;
}

.getting-started-tool button {
  min-width: 90px;
  min-height: 36px;
}

.getting-started-wizard-footer {
  min-height: 38px;
  padding-top: 2px;
}

.getting-started-navigation {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-left: auto;
}

.getting-started-navigation button {
  min-width: 112px;
  min-height: 40px;
}

.getting-started-visibility-actions {
  display: flex;
  align-items: center;
  gap: 7px;
}

.getting-started-visibility-button,
.getting-started-restart-button {
  min-height: 36px;
  font-size: 0.72rem;
}

.guided-tour-layer {
  position: fixed;
  inset: 0;
  z-index: 180;
  pointer-events: none;
}

.guided-tour-mask {
  position: fixed;
  background: rgba(10, 9, 8, 0.6);
  pointer-events: auto;
}

.guided-tour-focus-ring {
  position: fixed;
  border: 2px solid #67c596;
  border-radius: 12px;
  box-shadow: 0 0 0 4px rgba(66, 163, 116, 0.22), 0 10px 35px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  transition: inset 160ms ease, width 160ms ease, height 160ms ease;
}

.guided-tour-tooltip {
  position: fixed;
  z-index: 182;
  width: min(330px, calc(100vw - 24px));
  padding: 14px;
  border: 1px solid color-mix(in srgb, var(--green) 55%, var(--panel-border));
  border-radius: 16px;
  background: #38332f;
  box-shadow: 0 20px 55px rgba(0, 0, 0, 0.5);
  color: var(--text);
  pointer-events: auto;
}

.guided-tour-tooltip-header {
  margin-bottom: 5px;
}

.guided-tour-tooltip h3 {
  font-size: 0.96rem;
  line-height: 1.25;
}

.guided-tour-tooltip p {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.4;
}

.guided-tour-detail-link {
  min-width: 0;
  min-height: 0;
  margin-top: 8px;
  padding: 0;
  border: 0;
  color: color-mix(in srgb, var(--green) 78%, white);
  background: transparent;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.14em;
}

.guided-tour-detail-link:hover,
.guided-tour-detail-link:focus-visible {
  color: var(--text);
  background: transparent;
}

.guided-tour-tooltip-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 12px;
}

.guided-tour-tooltip-actions button {
  min-width: 90px;
  min-height: 38px;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: flex-start;
  min-width: 0;
}

.hero-section-subtitle {
  margin: 0;
  font-size: 0.68rem;
  line-height: 1.2;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
}

#repertoireAnalysisButton {
  grid-column: auto;
  white-space: normal;
  min-height: 34px;
}

.library-open-button {
  width: 100%;
  padding: 8px 10px;
  font-size: 0.78rem;
  line-height: 1.2;
}

#startDailySpacedTrainingButton.daily-training-priority {
  background: color-mix(in srgb, var(--green) 88%, #74c999 12%);
  border-color: #86d2a8;
  box-shadow:
    0 0 0 1px rgba(134, 210, 168, 0.62),
    0 0 11px rgba(86, 190, 130, 0.55),
    0 0 20px rgba(47, 111, 79, 0.34),
    inset 0 0 10px rgba(224, 255, 237, 0.07);
}

#startDailySpacedTrainingButton.daily-training-priority:hover:not(:disabled) {
  box-shadow:
    0 0 0 1px rgba(144, 222, 179, 0.72),
    0 0 13px rgba(92, 205, 141, 0.64),
    0 0 23px rgba(47, 111, 79, 0.4),
    inset 0 0 11px rgba(224, 255, 237, 0.09);
}

.config-grid {
  display: grid;
  gap: 8px;
}

.min-move-stepper-buttons,
#minOpponentMoveUpButton,
#minOpponentMoveDownButton {
  display: none !important;
}

.min-move-stepper #minOpponentMoveInput {
  width: 100%;
}

.primary-field select {
  font-size: 0.88rem;
  padding: 9px 10px;
  border-width: 2px;
  background: #3c3836;
}

.subdued-config {
  padding: 10px 12px;
  border-radius: 18px;
  background: rgba(58, 54, 50, 0.88);
  border: 1px solid rgba(96, 92, 87, 0.4);
}

.tree-preview-frame {
  width: min(100%, calc(100dvh - 215px), 1080px);
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  gap: 0;
  padding: 0;
  border-radius: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.tree-preview-frame.board-expanded {
  width: min(100%, calc(100dvh - 215px), 1080px);
}

.tree-picker {
  display: grid;
  gap: 6px;
  min-height: 0;
  height: 100%;
  align-content: start;
  overflow: hidden;
}

.tree-content-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.46fr);
  gap: 12px;
  align-items: start;
  min-height: 0;
  height: 100%;
  overflow: hidden;
}

.tree-current-path,
.tree-next-section {
  display: grid;
  gap: 6px;
}

.tree-current-path {
  margin-top: 6px;
}

.tree-next-section {
  padding-right: 0;
}

.tree-current-path-text {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  color: var(--text);
  font-size: 0.78rem;
  line-height: 1.28;
}

.tree-current-path-segment {
  white-space: nowrap;
}

.tree-board-column {
  display: grid;
  grid-template-rows: auto auto;
  gap: 2px;
  align-content: stretch;
  min-height: 0;
}

.tree-board-column .tree-preview-frame {
  justify-self: center;
  align-self: start;
}

.tree-right-column {
  display: grid;
  grid-template-rows: auto auto auto;
  gap: 10px;
  align-content: start;
  min-height: 0;
  min-width: 0;
}

.tree-picker-modal-card {
  width: 100vw;
  max-width: 100vw;
  height: 100dvh;
  min-height: 0;
  max-height: 100dvh;
  margin: 0;
  border-radius: 0;
  padding: 10px;
  display: grid;
  gap: 10px;
  overflow: hidden;
  grid-template-rows: auto auto minmax(0, 1fr);
  align-content: start;
  background: #2d2926;
  border: 0;
  box-shadow: none;
}

.tree-picker-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  max-height: none;
  overflow: hidden;
  padding-right: 0;
  justify-content: flex-start;
  width: 100%;
  max-width: 100%;
  align-content: start;
}

.tree-node-row {
  display: flex;
  align-items: center;
  gap: 4px;
  width: auto;
  min-width: 0;
  max-width: 100%;
}

.tree-node-button {
  flex: 0 0 auto;
  width: auto;
  text-align: left;
  background: var(--green);
  color: var(--button-text);
  border: none;
  padding: 5px 6px;
  font-size: 0.68rem;
  transform: none;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  text-overflow: clip;
  line-height: 1.15;
  max-width: 100%;
}

.tree-node-button:hover {
  transform: none;
  background: var(--green);
}

.tree-node-button.active {
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.22);
  background: var(--green);
}

.tree-action-row {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 8px;
}

.tree-action-row .tree-action-button {
  width: 100%;
  min-width: 0;
  min-height: 34px;
  padding: 7px 6px;
  font-size: 0.72rem;
  line-height: 1.18;
  white-space: nowrap;
}

.config-field {
  display: grid;
  grid-template-columns: minmax(118px, auto) minmax(0, 1fr);
  gap: 6px;
  align-items: center;
  color: var(--muted);
  font-size: 0.8rem;
}

.config-field span {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.6rem;
  line-height: 1.2;
}

.config-field select,
.config-field input,
.config-field textarea {
  width: 100%;
}

.position-note-input {
  box-sizing: border-box;
  min-height: 4.6rem;
  max-height: min(7rem, 22dvh);
  overflow: auto;
  resize: none;
  border: 1px solid var(--control-border);
  border-radius: var(--button-radius);
  padding: var(--button-padding-y) var(--button-padding-x);
  background: var(--control-bg);
  color: var(--text);
  font: inherit;
  line-height: 1.35;
}

.modal-config-field {
  grid-template-columns: minmax(var(--modal-form-label-min), 1fr) minmax(var(--modal-form-control-min), var(--modal-form-control-max));
  gap: var(--modal-form-row-gap);
}

.modal-config-field span {
  min-width: 0;
  white-space: normal;
}

.modal-config-field select,
.modal-config-field input {
  width: min(100%, var(--modal-form-control-max));
  justify-self: end;
}

.modal-form-row {
  display: grid;
  grid-template-columns: minmax(var(--modal-form-label-min), 1fr) minmax(var(--modal-form-control-min), var(--modal-form-control-max)) auto;
  gap: var(--modal-form-row-gap);
  align-items: center;
}

.modal-form-row--action-slot {
  grid-template-columns:
    minmax(var(--modal-form-label-min), 1fr)
    minmax(var(--modal-form-control-min), var(--modal-form-control-max))
    var(--modal-inline-button-width-desktop);
}

.modal-form-label {
  min-width: 0;
  white-space: normal;
}

.modal-form-row > select,
.modal-form-row > input {
  width: min(100%, var(--modal-form-control-max));
  min-width: 0;
}

.modal-multi-checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
  width: min(100%, var(--modal-form-control-max));
  justify-self: end;
}

.modal-multi-checkbox-row label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text);
}

.modal-checkbox-group-disabled {
  opacity: 0.45;
}

#mainSettingsModal .modal-form-row {
  grid-template-columns:
    minmax(var(--modal-form-label-min), 1fr)
    minmax(var(--modal-form-control-min), var(--modal-form-control-max));
}

#mainSettingsModal .modal-form-row > select {
  width: var(--modal-form-control-max);
  max-width: 100%;
  justify-self: end;
}

.main-settings-connection-control {
  display: grid;
  gap: 6px;
  width: min(100%, var(--modal-form-control-max));
  justify-self: end;
}

.main-settings-connection-control > .sidebar-value {
  margin: 0;
}

.main-settings-connection-control > button {
  width: 100%;
}

.main-settings-tour-group {
  display: grid;
  gap: 10px;
}

.account-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
}

.account-data-actions,
.account-data-action {
  display: grid;
  justify-items: start;
}

.account-data-actions {
  gap: 16px;
}

.account-data-action {
  gap: 7px;
}

.account-data-action > p {
  margin: 0;
}

.account-data-action .secondary-button {
  width: auto;
}

.account-modal-card,
.account-delete-card {
  width: min(520px, calc(100vw - 24px));
}

.account-modal-card > p,
.account-delete-card > p {
  margin: 0;
}

.account-modal-card > .sidebar-value,
.account-delete-card > p {
  color: var(--muted);
}

.opening-sparring-setup-card {
  width: min(560px, calc(100vw - 24px));
}

.opening-sparring-setup-card .modal-header > div {
  display: grid;
  gap: 4px;
}

.opening-sparring-setup-card .modal-header p {
  margin: 0;
}

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

.opening-sparring-setup-actions {
  grid-template-columns: 1fr;
}

.sparring-profile-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--control-border);
  border-radius: 12px;
  background: color-mix(in srgb, var(--control-bg) 88%, transparent);
}

.sparring-profile-copy {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.sparring-profile-panel p {
  margin: 0;
}

.sparring-connection-status {
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.25;
}

.sparring-profile-panel button {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 5px 10px;
}

.help-modal-card {
  width: min(760px, calc(100vw - 24px));
}

.help-modal-body {
  display: grid;
  gap: 10px;
}

.help-section {
  display: grid;
  gap: 8px;
  padding: 10px 12px;
  background: rgba(63, 59, 55, 0.78);
  border: 1px solid rgba(96, 92, 87, 0.28);
  border-radius: var(--modal-panel-radius);
}

.help-section h4,
.help-section p,
.help-section ol {
  margin: 0;
}

.help-section h4 {
  font-size: 0.86rem;
  line-height: 1.2;
  color: var(--text);
}

.help-section p,
.help-section li {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.36;
}

.help-steps {
  padding-left: 20px;
}

.help-faq-group details {
  padding: 8px 0 0;
  border-top: 1px solid rgba(96, 92, 87, 0.24);
}

.help-faq-group details:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.help-faq-group summary {
  cursor: pointer;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.25;
}

.help-faq-group details p {
  margin-top: 6px;
}

.modal-form-control--fill {
  width: 100%;
  max-width: none;
  justify-self: stretch;
}

.modal-form-input--centered,
.modal-form-input--centered::placeholder {
  text-align: center;
  text-align-last: center;
}

.modal-form-action {
  min-height: var(--control-height-md);
  padding: 8px 12px;
  justify-self: start;
}

.modal-form-action--fill {
  width: 100%;
  max-width: none;
  justify-self: stretch;
}

.modal-form-action--fill,
.modal-form-input--centered {
  text-align: center;
  text-align-last: center;
}

.modal-form-action--icon {
  width: var(--icon-button-size-sm);
  min-width: var(--icon-button-size-sm);
  max-width: var(--icon-button-size-sm);
  padding: 0;
}

.primary-field {
  grid-template-columns: minmax(150px, auto) minmax(0, 1fr);
}

.hero-menu .config-grid .config-field {
  grid-template-columns: minmax(150px, 1fr) auto;
}

.hero-menu .config-grid .config-field select,
.hero-menu .config-grid .config-field input[type="number"] {
  width: 240px;
  justify-self: end;
  text-align: right;
}

.hero-menu .config-grid .config-field select {
  text-align-last: right;
}

button,
select {
  border-radius: var(--button-radius);
  border: none;
  padding: var(--button-padding-y) var(--button-padding-x);
}

input[type="number"],
input[type="text"] {
  border-radius: var(--button-radius);
  border: 1px solid var(--control-border);
  padding: var(--button-padding-y) var(--button-padding-x);
  background: var(--control-bg);
  color: var(--text);
  font: inherit;
}

button {
  background: var(--button-primary-bg);
  color: var(--button-text);
  border: 1px solid var(--button-primary-border);
  cursor: pointer;
  transition: transform 150ms ease, opacity 150ms ease;
  font-size: var(--font-size-control);
  line-height: 1.2;
}

select {
  background: var(--control-bg);
  color: var(--text);
  border: 1px solid var(--control-border);
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.secondary-button {
  background: var(--button-secondary-bg);
  color: var(--button-secondary-text);
  border-color: var(--button-secondary-border);
}

.button-primary {
  background: var(--button-primary-bg);
  color: var(--button-text);
  border-color: var(--button-primary-border);
}

.button-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--button-ghost-border);
}

.button-danger {
  background: var(--button-danger-bg);
  color: var(--button-text);
  border-color: var(--button-danger-border);
}

.panel-header,
.board-layout,
.controls,
.stats-list li {
  display: flex;
  gap: 10px;
}

.panel-header {
  justify-content: space-between;
  align-items: start;
}

.board-layout {
  display: flex;
  align-items: start;
  margin: 14px 0;
  gap: 12px;
}

.board-main {
  display: grid;
  gap: 12px;
  flex: 1 1 auto;
  min-width: 0;
  align-content: start;
}

.board-side {
  display: grid;
  gap: 10px;
  min-width: 260px;
  width: 280px;
  align-content: start;
}

.board-main .board-frame {
  justify-self: start;
}

.board-frame {
  width: min(100%, 448px);
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  gap: 0;
  padding: 0;
  border-radius: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.board-frame.board-expanded {
  width: min(100%, 582px);
}

.board-frame-middle {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  align-items: stretch;
}

.board-files {
  display: none;
  grid-template-columns: repeat(8, 1fr);
  padding: 0 20px;
}

.board-ranks {
  display: none;
  grid-template-rows: repeat(8, 1fr);
}

.board-coordinate {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: lowercase;
}

.chessboard {
  width: 100%;
  aspect-ratio: 1;
  position: relative;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 1fr);
  border-radius: 0;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(24, 33, 38, 0.2);
}

.square {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  width: 100%;
  height: 100%;
  position: relative;
  user-select: none;
  padding: 0;
  margin: 0;
  border: 0;
  border-radius: 0;
  appearance: none;
}

.square-coordinate-label {
  position: absolute;
  z-index: 2;
  font-size: 0.52rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.01em;
  pointer-events: none;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.14);
  user-select: none;
}

.square.light .square-coordinate-label {
  color: rgba(50, 48, 45, 0.62);
}

.square.dark .square-coordinate-label {
  color: rgba(245, 242, 236, 0.62);
}

.square-coordinate-file {
  left: 4px;
  bottom: 3px;
}

.square-coordinate-rank {
  right: 4px;
  top: 3px;
}

.square.light {
  background: var(--light-square);
}

.square.dark {
  background: var(--dark-square);
}

.square.selectable {
  cursor: pointer;
}

.chessboard .square:hover,
.chessboard .square:focus-visible {
  transform: none;
}

.square.selectable:active .piece-image {
  cursor: grabbing;
}

.piece-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  position: relative;
  z-index: 1;
  pointer-events: auto;
  filter: drop-shadow(0 1px 0 rgba(0, 0, 0, 0.08));
}

body.board-piece-dragging,
body.board-piece-dragging * {
  user-select: none;
  -webkit-user-select: none;
  cursor: grabbing !important;
}

.board-drag-ghost {
  position: fixed;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 9999;
  object-fit: contain;
  filter: drop-shadow(0 1px 0 rgba(0, 0, 0, 0.14));
}

.square.incoming-hidden .piece-image {
  opacity: 0;
}

.board-auto-move-piece {
  position: absolute;
  width: 12.5%;
  height: 12.5%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 24;
  filter: drop-shadow(0 1px 0 rgba(0, 0, 0, 0.14));
  transition: left 320ms cubic-bezier(0.22, 1, 0.36, 1), top 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.square.drag-origin .piece-image {
  opacity: 0;
}

.piece-image[data-dragging="true"] {
  opacity: 0 !important;
}

.square.selectable .piece-image {
  cursor: grab;
}

.square.selectable .piece-image:active {
  cursor: grabbing;
}

.square.selected::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 14px;
  border: 3px solid transparent;
  pointer-events: none;
  z-index: 2;
}

.square.selected::after {
  inset: 0;
  border: none;
  border-radius: 0;
  background: rgba(64, 134, 219, 0.38);
}

.square.last-move-from::before,
.square.last-move-to::before,
.square.success-from::before,
.square.success-to::before,
.square.success::before,
.square.neutral-from::before,
.square.neutral-to::before,
.square.neutral::before,
.square.error-soft-from::before,
.square.error-soft-to::before,
.square.error-soft::before,
.square.error-medium-from::before,
.square.error-medium-to::before,
.square.error-medium::before,
.square.error-from::before,
.square.error-to::before,
.square.error::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.square.last-move-from::before,
.square.success-from::before {
  background: rgba(160, 210, 86, 0.34);
}

.square.last-move-to::before,
.square.success-to::before,
.square.success::before {
  background: rgba(186, 226, 105, 0.48);
}

.square.neutral-from::before,
.square.neutral-to::before,
.square.neutral::before {
  background: rgba(154, 196, 255, 0.38);
}

.square.error-soft-from::before,
.square.error-soft-to::before,
.square.error-soft::before {
  background: rgba(255, 228, 109, 0.42);
}

.square.error-medium-from::before,
.square.error-medium-to::before,
.square.error-medium::before {
  background: rgba(255, 183, 97, 0.42);
}

.square.error-from::before,
.square.error-to::before,
.square.error::before {
  background: rgba(255, 164, 164, 0.35);
}

.moves-box {
  min-width: 0;
}

.moves-box-header {
  display: grid;
  gap: 2px;
  margin-bottom: 8px;
}

.moves-box-title {
  margin-bottom: 0;
  font-size: 0.78rem;
  line-height: 1.25;
  text-transform: none;
  letter-spacing: 0.01em;
  color: var(--text);
}

.engine-box {
  min-width: 0;
}

.engine-box-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 10px;
}

.engine-box-header .prompt-label {
  margin-bottom: 0;
}

.engine-box-header-actions {
  display: flex;
  gap: 6px;
  margin-left: auto;
}

.engine-box-button {
  flex: 0 0 auto;
  white-space: nowrap;
  align-self: start;
}

.engine-stats {
  margin-top: 12px;
}

.answer-box {
  background: rgba(58, 54, 50, 0.9);
  border: 1px solid rgba(96, 92, 87, 0.36);
  border-radius: 18px;
  padding: 10px;
}

.controls {
  flex-wrap: nowrap;
  margin-bottom: 12px;
}

.controls button {
  flex: 1 1 0;
  min-width: 0;
  padding: 7px 6px;
  font-size: 0.74rem;
  white-space: nowrap;
}

.candidate-moves {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
}

.variant-progress {
  margin-top: 10px;
  display: grid;
  gap: 10px;
}

.variant-column {
  display: grid;
  gap: 8px;
}

.variant-title {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.66rem;
  color: var(--muted);
}

.variant-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.candidate-chip {
  background: rgba(47, 111, 79, 0.1);
  color: var(--green);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.84rem;
}

.candidate-chip.solved {
  background: rgba(47, 111, 79, 0.18);
}

.candidate-chip.remaining {
  background: rgba(164, 74, 63, 0.12);
  color: var(--accent-dark);
}

.expected-move-slot {
  min-width: 42px;
  padding: 8px 6px;
  border-radius: 12px;
  border: 1px solid rgba(96, 92, 87, 0.34);
  background: rgba(63, 59, 55, 0.82);
  color: transparent;
  text-align: center;
  font-size: 0.8rem;
  line-height: 1.2;
  white-space: nowrap;
}

.expected-move-slot.hidden {
  color: transparent;
}

.expected-move-slot.solved {
  color: #7fe39f;
  border-color: rgba(47, 111, 79, 0.62);
  background: rgba(47, 111, 79, 0.18);
}

.expected-move-slot.revealed {
  color: #f08e83;
  border-color: rgba(164, 74, 63, 0.62);
  background: rgba(164, 74, 63, 0.16);
}

.move-history {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  color: var(--muted);
  max-height: none;
  overflow: auto;
  font-size: 0.78rem;
}

.move-history li {
  white-space: nowrap;
}

.explorer-table {
  width: 100%;
  margin-top: 8px;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 0.74rem;
  color: var(--muted);
}

.explorer-table-wrap {
  min-height: 184px;
  max-height: 184px;
  overflow: auto;
}

.explorer-table th,
.explorer-table td {
  padding: 6px 6px;
  text-align: left;
  border-bottom: 1px solid rgba(96, 92, 87, 0.22);
  white-space: nowrap;
}

.explorer-table th {
  color: var(--text);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.eval-legend-indicator {
  display: inline-block;
  margin-left: 2px;
  font-size: 0.78em;
  line-height: 1;
  color: var(--text);
  opacity: 0.95;
  cursor: help;
  vertical-align: text-top;
}

.explorer-table th:nth-child(1),
.explorer-table td:nth-child(1) {
  width: 20%;
}

.explorer-table th:nth-child(2),
.explorer-table td:nth-child(2) {
  width: 14%;
}

.explorer-table th:nth-child(n+3),
.explorer-table td:nth-child(n+3) {
  width: 16.5%;
}

.explorer-table td:first-child {
  color: var(--text);
  font-weight: 700;
}

.explorer-table td.explorer-eval-cell {
  font-variant-numeric: tabular-nums;
}

.explorer-table td.explorer-alert {
  color: #d65d5d;
  font-weight: 700;
}

.explorer-table td.explorer-covered {
  color: #7fcb97;
  font-weight: 700;
}

.explorer-table td.explorer-placeholder-cell {
  color: var(--text-disabled);
}

.explorer-clickable-row {
  cursor: pointer;
}

.explorer-clickable-row:hover td,
.explorer-clickable-row:focus-visible td {
  background: rgba(58, 130, 96, 0.16);
}