:root {
  --page-x-padding: 1rem;
  --mint: #00D97E;
  --mint-underline: #7AECC0;
  --mint-light: #E0FFF2;
  --mint-dark: #009959;
  --mint-border: #A8F0D4;
  --coral: #FF5724;
  --coral-light: #FFE3D8;
  --coral-dark: #D93D0E;
  --coral-border: #FFBFA8;
  --neutral-0: #FFFFFF;
  --neutral-50: #F7F9F8;
  --neutral-100: #EFEFED;
  --neutral-300: #C4C4C0;
  --neutral-500: #888884;
  --neutral-700: #444440;
  --neutral-900: #1A1A18;
  --surface: var(--neutral-0);
  --surface-muted: var(--neutral-50);
  --border: var(--neutral-100);
  --brand: var(--mint);
  --text-primary: var(--neutral-900);
  --text-secondary: var(--neutral-700);
  --text-muted: var(--neutral-500);
  --font: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --radius-card: 1rem;
  --radius-btn: 0.75rem;
}

@font-face {
  font-display: block;
  font-family: "Material Symbols Outlined";
  font-style: normal;
  font-weight: 400;
  src: url("material-symbols-book-6.ttf") format("truetype");
}

.material-symbol {
  display: inline-block;
  font-family: "Material Symbols Outlined";
  font-style: normal;
  font-weight: 400;
  line-height: 1;
  text-transform: none;
  white-space: nowrap;
  word-wrap: normal;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
}

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

html {
  overflow-x: hidden;
}

body {
  background: var(--neutral-50);
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text-primary);
  overflow-x: hidden;
  padding: 0 var(--page-x-padding) 3rem;
}

.page-shell {
  max-width: 680px;
  margin: 0 auto;
}

/* Global header and page navigation */
.global-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  margin-left: calc(var(--page-x-padding) * -1);
  margin-right: calc(var(--page-x-padding) * -1);
  position: sticky;
  top: 0;
  z-index: 40;
}

.global-header-inner,
.page-nav-inner {
  align-items: center;
  display: flex;
  margin: 0 auto;
  /* The main column is 680px wide. These full-bleed rows own 1rem gutters,
     so their border box must be 32px wider for their content edges to align. */
  max-width: calc(680px + 2rem);
  padding-left: 1rem;
  padding-right: 1rem;
}

.global-header-inner {
  justify-content: space-between;
  min-height: 3.25rem;
}

.global-brand {
  align-items: center;
  display: inline-flex;
  text-decoration: none;
}

.global-account {
  align-items: center;
  color: var(--text-secondary);
  display: inline-flex;
  font-size: 0.82rem;
  gap: 0.55rem;
  justify-content: flex-end;
  min-width: 0;
}

.account-chip {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 600;
  max-width: min(16rem, 52vw);
  min-height: 2rem;
  overflow: hidden;
  padding: 0.35rem 0.75rem;
  text-overflow: ellipsis;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}

.account-chip:hover,
.account-chip:focus {
  background: var(--surface-muted);
  border-color: var(--neutral-300);
  box-shadow: 0 0 0 3px rgba(136, 136, 132, 0.12);
  outline: none;
}

/* Signed-in state is a plain action at rest; reveal its hit area on hover/focus. */
.account-chip[data-signed-in="true"] {
  background: transparent;
  border-color: transparent;
  border-radius: 0.5rem;
  padding-left: 0.7rem;
  padding-right: 0.7rem;
}

.account-chip[data-signed-in="true"]:hover,
.account-chip[data-signed-in="true"]:focus {
  background: var(--neutral-100);
  border-color: transparent;
  box-shadow: none;
  color: var(--text-primary);
  text-decoration: none;
}

.page-nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  margin-left: calc(var(--page-x-padding) * -1);
  margin-right: calc(var(--page-x-padding) * -1);
}

.page-nav-inner {
  gap: 0.25rem;
  justify-content: center;
  min-height: 3rem;
}

.page-nav-tab {
  align-items: center;
  background: transparent;
  border-radius: 999px;
  color: #999897;
  display: inline-flex;
  font-size: 0.88rem;
  font-weight: 600;
  gap: 0.32rem;
  line-height: 1;
  min-width: 0;
  padding: 0.42rem 0.58rem;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.page-nav-tab:hover,
.page-nav-tab:focus {
  background: var(--surface-muted);
  color: var(--text-primary);
  outline: none;
}

.page-nav-tab--active {
  background: var(--neutral-100);
  color: var(--text-primary);
}

.page-nav-icon {
  background: currentColor;
  display: inline-block;
  flex: 0 0 auto;
  height: 1rem;
  mask-position: center;
  mask-repeat: no-repeat;
  mask-size: contain;
  -webkit-mask-position: center;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  width: 1rem;
}

.page-nav-icon--home {
  mask-image: url("home_and_garden.svg");
  -webkit-mask-image: url("home_and_garden.svg");
}

.page-nav-icon--wordbank {
  mask-image: url("book_6.svg");
  -webkit-mask-image: url("book_6.svg");
}

.page-nav-symbol {
  flex: 0 0 auto;
  font-size: 1rem;
}

.material-symbol {
  display: inline-block;
  font-family: "Material Symbols Outlined";
  font-style: normal;
  font-weight: 400;
  line-height: 1;
  text-transform: none;
  white-space: nowrap;
  word-wrap: normal;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
}

/* Header */
.page-header {
  align-items: flex-start;
  display: grid;
  margin-bottom: 1rem;
  padding-top: 1.6rem;
}

.wb-brand-logo {
  display: block;
  height: 1rem;
  max-width: 6.25rem;
  width: auto;
}

.hero-title {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 0.4rem;
}

.wb-title {
  align-items: center;
  display: flex;
  gap: 0.55rem;
  margin-top: 0;
}

.title-book-icon {
  color: var(--coral-dark);
  flex: 0 0 auto;
  font-family: "Material Symbols Outlined";
  font-size: 1em;
  font-style: normal;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
  font-weight: 400;
  height: 1em;
  line-height: 1;
  text-transform: none;
  white-space: nowrap;
  width: 1em;
  word-wrap: normal;
}

.hero-copy {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Toolbar */
.status-tabs {
  display: flex;
  gap: 0.5rem;
  margin: -0.25rem;
  padding: 0.25rem;
  min-width: 0;
  overflow: visible;
}

.status-filter-row {
  align-items: center;
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.55rem;
  min-width: 0;
  overflow: visible;
  position: relative;
}

.status-help {
  flex: 0 0 auto;
  margin-left: 0.25rem;
  position: relative;
}

.status-help-button {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 999px;
  color: var(--text-muted);
  cursor: help;
  display: inline-flex;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  height: 2rem;
  justify-content: center;
  line-height: 1;
  transition: background 0.15s, color 0.15s;
  width: 2rem;
}

.status-help-button:hover,
.status-help-button:focus {
  background: var(--neutral-100);
  color: var(--text-primary);
  outline: none;
}

.status-help-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.65rem;
  box-shadow: 0 14px 32px rgba(26, 26, 24, 0.14);
  color: var(--text-secondary);
  display: grid;
  font-size: 0.78rem;
  gap: 0.18rem;
  line-height: 1.35;
  min-width: 17rem;
  opacity: 0;
  padding: 0.7rem 0.75rem;
  pointer-events: none;
  position: absolute;
  left: 50%;
  top: calc(100% + 0.625rem);
  transform: translate(calc(-50% + var(--status-help-panel-shift-x, 0px)), -0.15rem);
  transition: opacity 0.15s, transform 0.15s;
  z-index: 30;
}

.status-help-title {
  align-items: center;
  color: var(--text-primary);
  display: inline-flex;
  gap: 0.4rem;
  font-weight: 600;
  margin-top: 0.25rem;
}

.status-help-title--mastered {
  color: var(--mint-dark);
}

.status-help-icon {
  background: currentColor;
  flex: 0 0 auto;
  height: 0.95rem;
  mask-position: center;
  mask-repeat: no-repeat;
  mask-size: contain;
  -webkit-mask-position: center;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  width: 0.95rem;
}

.status-help-icon--learning {
  mask-image: url("quiz.svg");
  -webkit-mask-image: url("quiz.svg");
}

.status-help-icon--mastered {
  mask-image: url("trophy.svg");
  -webkit-mask-image: url("trophy.svg");
}

.status-help-panel p {
  margin: 0;
}

.status-help:hover .status-help-panel,
.status-help:focus-within .status-help-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translate(calc(-50% + var(--status-help-panel-shift-x, 0px)), 0);
}

.status-tab {
  --tab-bg: var(--surface);
  --tab-border: var(--border);
  --tab-text: var(--text-secondary);
  --tab-active-bg: var(--neutral-100);
  --tab-active-border: var(--tab-border);
  --tab-focus-shadow: rgba(136, 136, 132, 0.14);
  align-items: center;
  background: var(--tab-bg);
  border: 1px solid var(--tab-border);
  border-radius: var(--radius-btn);
  color: var(--tab-text);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  gap: 0.4rem;
  justify-content: center;
  min-height: 2.35rem;
  padding: 0.45rem 0.75rem;
  transition: border-color 0.15s, box-shadow 0.15s, color 0.15s, background 0.15s;
  white-space: nowrap;
}

.status-tab--learning {
  --tab-border: var(--border);
  --tab-text: var(--neutral-700);
  --tab-active-bg: var(--neutral-100);
  --tab-focus-shadow: rgba(136, 136, 132, 0.14);
}

.status-tab--mastered {
  --tab-border: var(--mint-border);
  --tab-text: var(--mint-dark);
  --tab-active-bg: var(--mint-light);
  --tab-focus-shadow: rgba(0, 153, 89, 0.16);
}

.status-tab-icon {
  background: currentColor;
  display: inline-block;
  flex: 0 0 auto;
  height: 1rem;
  mask-position: center;
  mask-repeat: no-repeat;
  mask-size: contain;
  -webkit-mask-position: center;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  width: 1rem;
}

.status-tab-icon--learning {
  mask-image: url("quiz.svg");
  -webkit-mask-image: url("quiz.svg");
}

.status-tab-icon--mastered {
  mask-image: url("trophy.svg");
  -webkit-mask-image: url("trophy.svg");
}

.status-tab:hover,
.status-tab:focus {
  border-color: var(--tab-active-border);
  box-shadow: 0 0 0 3px var(--tab-focus-shadow);
  outline: none;
}

.status-tab[aria-selected="true"] {
  background: var(--tab-active-bg);
  border-color: var(--tab-active-border);
  color: var(--tab-text);
}

.status-tab-count {
  align-items: center;
  background: var(--surface-muted);
  border-radius: 999px;
  color: var(--text-muted);
  display: inline-flex;
  font-size: 0.72rem;
  font-weight: 600;
  height: 1.35rem;
  justify-content: center;
  min-width: 1.35rem;
  padding: 0 0.35rem;
}

.status-tab[aria-selected="true"] .status-tab-count {
  background: var(--surface);
  color: var(--tab-text);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.board-toolbar {
  display: grid;
  gap: 0.65rem;
  margin-bottom: 1rem;
}
.board-toolbar .toolbar { margin-bottom: 0; }

.topic-chip-row {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.topic-chip {
  align-items: center;
  background: var(--neutral-0);
  border: 1px solid var(--neutral-100);
  border-radius: 999px;
  color: var(--neutral-700);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  gap: 0.35rem;
  min-height: 2rem;
  padding: 0.35rem 0.7rem;
}

.topic-chip:hover, .topic-chip:focus, .topic-manage-chip:focus-within {
  border-color: var(--mint-border);
  box-shadow: 0 0 0 3px rgba(0, 217, 126, 0.12);
  outline: none;
}

.topic-chip[aria-pressed="true"] {
  background: var(--mint-light);
  border-color: var(--mint-border);
  color: var(--mint-dark);
}

.topic-chip-count { color: var(--neutral-500); font-weight: 600; }
.topic-chip[aria-pressed="true"] .topic-chip-count { color: var(--mint-dark); }
.topic-action-chip { color: var(--mint-dark); }
.topic-add-inline { max-width: 13rem; }
.topic-name-input { width: 13rem; }

.topic-manage-chip { cursor: default; gap: 4px; padding: 0.35rem 0.5rem 0.35rem 0.7rem; }
.topic-manage-input { background: transparent; border: 0; color: inherit; font: inherit; font-weight: 600; min-width: 0; outline: none; }
.topic-manage-chip--disabled { color: var(--neutral-400); opacity: 0.55; pointer-events: none; }
.topic-delete-btn { align-items:center; background:transparent; border:0; border-radius:999px; color:var(--neutral-500); cursor:pointer; display:inline-flex; font-size:1rem; height:1rem; justify-content:center; padding:0; width:1rem; }
.topic-delete-btn:hover, .topic-delete-btn:focus { background:var(--neutral-100); color:var(--coral-dark); outline:none; }

.card-domain-control { position: relative; }
.domain-chip { align-items:center; background:var(--neutral-100); border:0; border-radius:999px; color:var(--neutral-700); cursor:pointer; display:inline-flex; font:inherit; font-size:0.72rem; font-weight:600; gap:0.25rem; min-height:1.7rem; padding:0.25rem 0.55rem; }
.domain-chip:hover, .domain-chip:focus { box-shadow:0 0 0 3px rgba(0,217,126,.12); outline:none; }
.domain-chip-caret { border-left:3px solid transparent; border-right:3px solid transparent; border-top:4px solid currentColor; }
.domain-menu { background:var(--neutral-0); border:1px solid var(--neutral-100); border-radius:.7rem; box-shadow:0 8px 24px rgba(26,26,24,.14); max-height:15rem; min-width:10rem; overflow-y:auto; padding:.3rem; position:absolute; right:0; top:calc(100% + .3rem); z-index:20; }
.domain-menu-item { align-items:center; background:transparent; border:0; border-radius:.45rem; color:var(--neutral-700); cursor:pointer; display:flex; font:inherit; font-size:.78rem; gap:.4rem; padding:.45rem .55rem; text-align:left; width:100%; }
.domain-menu-item:hover, .domain-menu-item:focus, .domain-menu-item.is-selected { background:var(--mint-light); color:var(--mint-dark); outline:none; }
.domain-menu-check { display:inline-block; width:.75rem; }

.control {
  flex: 1 1 140px;
  min-width: 0;
  font-family: var(--font);
  font-size: 0.875rem;
  color: var(--text-primary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  padding: 0.55rem 0.85rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
  appearance: none;
}

.control:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(0, 217, 126, 0.16);
}

.empty-state,
.error-state {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 2.5rem 1rem;
}

.error-state {
  color: #ef4444;
}

.hidden {
  /* Utility toggle: must win over component rules that set display (e.g.
     .signed-out-state { display: flex }), which are defined later in this file
     and would otherwise tie on specificity and keep the element visible. */
  display: none !important;
}

/* Legal pages (privacy, data use) */
.legal {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  padding-bottom: 1.5rem;
}

.legal-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.legal h2 {
  color: var(--text-primary);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 1.75rem 0 0.6rem;
}

.legal p {
  margin-bottom: 0.9rem;
}

.legal ul {
  margin: 0 0 0.9rem;
  padding-left: 1.25rem;
}

.legal li {
  margin-bottom: 0.5rem;
}

.legal a {
  color: var(--mint-dark);
  text-decoration: underline;
  text-decoration-color: var(--mint-underline);
  text-underline-offset: 2px;
}

.legal a:hover,
.legal a:focus {
  color: var(--text-primary);
}

/* Site footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 2.5rem;
}

.site-footer-inner {
  align-items: center;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.82rem;
  gap: 0.75rem 1.25rem;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 680px;
  padding: 1.25rem 0;
}

.site-footer-links {
  display: inline-flex;
  gap: 1.25rem;
}

.site-footer-links a {
  color: var(--text-secondary);
  font-weight: 600;
  text-decoration: none;
}

.site-footer-links a:hover,
.site-footer-links a:focus {
  color: var(--text-primary);
  text-decoration: underline;
}

/* Signed-out state */
.signed-out-state {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 4rem 1rem;
  text-align: center;
}

.signed-out-lead {
  color: var(--text-secondary);
  font-size: 1rem;
  margin: 0;
}

.signed-out-button {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-secondary);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  padding: 0.55rem 1.4rem;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.signed-out-button:hover,
.signed-out-button:focus {
  background: var(--surface-muted);
  border-color: var(--neutral-300);
  box-shadow: 0 0 0 3px rgba(136, 136, 132, 0.12);
  outline: none;
}

/* ── Growth / home page ─────────────────────────────────────── */
.growth-stage-section {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1rem;
  padding: 1.75rem 1.5rem 2rem;
}

.growth-points {
  align-items: center;
  background: var(--mint-light);
  border: 1px solid var(--mint-border);
  border-radius: 999px;
  color: var(--mint-dark);
  display: inline-flex;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.95rem;
}

.growth-points-value {
  color: var(--mint-dark);
  font-size: 1rem;
  font-weight: 700;
}

.plant-stage {
  text-align: center;
  width: 100%;
}

.plant-stage-illustration {
  font-size: 3.5rem;
  line-height: 1;
}

.plant-stage-name {
  color: var(--text-primary);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0.5rem 0 0.15rem;
}

.plant-stage-progress {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.85rem;
}

.plant-stage-progress-track {
  background: var(--neutral-100);
  border-radius: 999px;
  height: 0.5rem;
  margin: 0 auto;
  max-width: 22rem;
  overflow: hidden;
}

.plant-stage-progress-fill {
  background: var(--mint);
  border-radius: 999px;
  display: block;
  height: 100%;
  transition: width 0.4s ease;
}

.growth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.5rem;
}

.growth-card-title {
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
}

.growth-reading-summary {
  align-items: baseline;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.growth-reading-total {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.growth-reading-total strong {
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
  margin-right: 0.3rem;
}

.growth-reading-delta {
  font-size: 0.85rem;
  font-weight: 600;
}

.growth-reading-delta[data-trend="up"] { color: var(--mint-dark); }
.growth-reading-delta[data-trend="down"] { color: var(--coral-dark); }
.growth-reading-delta[data-trend="flat"] { color: var(--text-muted); }

.growth-reading-chart {
  align-items: end;
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(7, 1fr);
  height: 8rem;
}

.growth-reading-bar-group {
  display: grid;
  gap: 0.4rem;
  grid-template-rows: 1fr auto;
  height: 100%;
  justify-items: center;
}

.growth-reading-bar-track {
  align-items: end;
  background: var(--surface-muted);
  border-radius: 0.4rem;
  display: flex;
  height: 100%;
  overflow: hidden;
  width: 100%;
}

.growth-reading-bar-fill {
  background: var(--mint);
  border-radius: 0.4rem;
  display: block;
  min-height: 0;
  transition: height 0.4s ease;
  width: 100%;
}

.growth-reading-bar-group.is-today .growth-reading-bar-fill {
  background: var(--mint-dark);
}

.growth-reading-day-label {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
}

/* Word list */
.word-list {
  display: grid;
  gap: 0.875rem;
}

/* Card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1rem 1.125rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  min-width: 0;
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
  min-width: 0;
}

.card-term {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  min-width: 0;
  overflow-wrap: anywhere;
}

.status-label {
  align-items: center;
  background: var(--neutral-100);
  border: 1px solid var(--neutral-100);
  border-radius: 999px;
  color: var(--neutral-700);
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 0.62rem;
  font-weight: 600;
  gap: 0.3rem;
  letter-spacing: 0.02em;
  min-height: 1.55rem;
  padding: 0.2rem 0.5rem;
}

.status-label--mastered {
  background: var(--mint-light);
  border-color: var(--mint-border);
  color: var(--mint-dark);
}

.status-label-icon {
  background: currentColor;
  flex: 0 0 auto;
  height: 0.95rem;
  mask-position: center;
  mask-repeat: no-repeat;
  mask-size: contain;
  -webkit-mask-position: center;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  width: 0.95rem;
}

.status-label-icon--learning {
  mask-image: url("quiz.svg");
  -webkit-mask-image: url("quiz.svg");
}

.status-label-icon--mastered {
  mask-image: url("trophy.svg");
  -webkit-mask-image: url("trophy.svg");
}

.card-meaning {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.card-context {
  font-size: 0.825rem;
  color: var(--text-secondary);
  line-height: 1.55;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 0.625rem;
  padding: 0.6rem 0.8rem;
  margin-bottom: 0.75rem;
  overflow-wrap: anywhere;
}

.card-context em {
  font-style: normal;
  font-weight: 600;
  color: var(--coral-dark);
}

/* Expandable details */
.card-details {
  border: 1px solid var(--border);
  border-radius: 0.875rem;
  background: var(--surface-muted);
  overflow: hidden;
}

.card-details summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0.9rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.card-details summary::-webkit-details-marker {
  display: none;
}

.card-details summary::after {
  content: "+";
  font-size: 1rem;
  line-height: 1;
  color: var(--text-muted);
}

.card-details[open] summary::after {
  content: "-";
}

.details-grid {
  display: grid;
  gap: 0.65rem;
  padding: 0 0.9rem 0.9rem;
  min-width: 0;
}

.details-row {
  display: grid;
  gap: 0.2rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border);
  min-width: 0;
}

.details-row:first-child {
  padding-top: 0;
  border-top: none;
}

.details-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.details-value {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-primary);
  word-break: break-word;
}

.details-value em {
  color: var(--coral-dark);
  font-style: normal;
  font-weight: 600;
}

.source-sentence {
  align-items: baseline;
  display: inline;
}

.source-icon-link {
  align-items: center;
  border-radius: 999px;
  color: var(--mint-dark);
  display: inline-flex;
  height: 1.45em;
  justify-content: center;
  margin-left: 0.25rem;
  text-decoration: none;
  transition: background-color 0.15s, box-shadow 0.15s, transform 0.15s;
  vertical-align: -0.28em;
  width: 1.45em;
}

.source-icon-link:hover,
.source-icon-link:focus {
  background: transparent;
  filter: drop-shadow(0 3px 3px rgba(0, 153, 89, 0.28));
  color: var(--mint-dark);
  outline: none;
  transform: translateY(-1px);
}

.source-icon-link svg {
  fill: none;
  height: 0.95em;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
  width: 0.95em;
}

.review-stats {
  color: var(--text-secondary);
  font-weight: 400;
}

.review-stats strong {
  font-weight: 600;
}

.card-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.65rem;
}

.pos-badge {
  flex-shrink: 0;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: #dff0fb;
  color: #0b96e8;
}

.cefr-badge {
  flex-shrink: 0;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: #e7f0e2;
  color: #4a7a3a;
}

.card-sense {
  font-size: 0.825rem;
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.card-forms {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
}

.form-chip {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--surface-muted);
  overflow-wrap: anywhere;
}

@media (max-width: 520px) {
  :root {
    --page-x-padding: 0.75rem;
  }

  body {
    padding-bottom: 2.5rem;
  }

  .global-header-inner,
  .page-nav-inner {
    padding-left: var(--page-x-padding);
    padding-right: var(--page-x-padding);
  }

  .page-header {
    margin-bottom: 1.25rem;
  }

  .account-chip {
    max-width: 48vw;
    padding-left: 0.65rem;
    padding-right: 0.65rem;
  }

  .status-filter-row {
    align-items: flex-start;
  }

  .status-tabs {
    display: grid;
    flex: 1 1 auto;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-left: 0;
    margin-right: 0;
    padding-left: 0;
    padding-right: 0;
  }

  .status-tab {
    font-size: 0.78rem;
    gap: 0.28rem;
    min-width: 0;
    padding-left: 0.45rem;
    padding-right: 0.45rem;
  }

  .status-tab-icon {
    display: none;
  }

  .toolbar {
    display: grid;
    grid-template-columns: 1fr;
  }

  .control {
    width: 100%;
  }

  .card {
    padding: 0.95rem;
  }

  .card-top {
    flex-wrap: wrap;
  }
}

/* ── Landing page ───────────────────────────────────────────── */
.landing {
  margin: 0 auto;
  max-width: 880px;
}

.account-chip[href] {
  text-decoration: none;
}

.hero {
  padding: 3.5rem 0 2.5rem;
  text-align: center;
}

.beta-chip {
  background: var(--mint-light);
  border: 1px solid var(--mint-border);
  border-radius: 999px;
  color: var(--mint-dark);
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 1.1rem;
  padding: 0.25rem 0.7rem;
  text-transform: uppercase;
}

.landing-title {
  color: var(--text-primary);
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 auto 1rem;
  max-width: 16ch;
}

.landing-lead {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
  margin: 0 auto 1.75rem;
  max-width: 52ch;
}

.hero-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.btn {
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 600;
  padding: 0.7rem 1.5rem;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.05s;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--mint);
  border: 1px solid var(--mint);
  color: var(--neutral-900);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--mint-dark);
  border-color: var(--mint-dark);
  box-shadow: 0 0 0 3px rgba(0, 217, 126, 0.18);
  color: var(--neutral-0);
  outline: none;
}

.btn-secondary {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--surface-muted);
  border-color: var(--neutral-300);
  color: var(--text-primary);
  outline: none;
}

.hero-note {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 1.1rem;
}

.features {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, 1fr);
  padding: 1.5rem 0 2.5rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.5rem 1.35rem;
}

.feature-icon,
.feature-svg {
  color: var(--mint-dark);
  display: inline-block;
  height: 1.9rem;
  margin-bottom: 0.85rem;
  width: 1.9rem;
}

.feature-icon {
  background: currentColor;
  mask-position: center;
  mask-repeat: no-repeat;
  mask-size: contain;
  -webkit-mask-position: center;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-size: contain;
}

.feature-icon--quiz {
  mask-image: url("quiz.svg");
  -webkit-mask-image: url("quiz.svg");
}

.feature-icon--grow {
  mask-image: url("home_and_garden.svg");
  -webkit-mask-image: url("home_and_garden.svg");
}

.feature-title {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.feature-copy {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

.cta-band {
  border-top: 1px solid var(--border);
  padding: 2.75rem 0 1rem;
  text-align: center;
}

.cta-title {
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.cta-links {
  color: var(--text-muted);
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.cta-links a {
  color: var(--text-secondary);
  font-weight: 600;
  text-decoration: none;
}

.cta-links a:hover,
.cta-links a:focus {
  color: var(--text-primary);
  text-decoration: underline;
}

/* ── Data-use tables ────────────────────────────────────────── */
.table-scroll {
  margin-bottom: 1.25rem;
  overflow-x: auto;
}

.data-table {
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 32rem;
  width: 100%;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid var(--border);
  padding: 0.7rem 0.8rem;
  text-align: left;
  vertical-align: top;
}

.data-table thead th {
  border-bottom: 2px solid var(--neutral-100);
  color: var(--text-primary);
  font-weight: 700;
}

.data-table tbody th {
  color: var(--text-primary);
  font-weight: 600;
  white-space: normal;
}

.data-table td {
  color: var(--text-secondary);
}

.data-table .mono {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
}

@media (max-width: 640px) {
  .landing-title {
    font-size: 1.9rem;
  }

  .features {
    grid-template-columns: 1fr;
  }
}