/* =========================================================
   Articulate — Serene Hearth design system
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --color-surface: #fcf9f8;
  --color-surface-dim: #dcd9d9;
  --color-surface-bright: #fcf9f8;
  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low: #f6f3f2;
  --color-surface-container: #f0eded;
  --color-surface-container-high: #eae7e7;
  --color-surface-container-highest: #e4e2e1;
  --color-on-surface: #1b1c1c;
  --color-on-surface-variant: #53433e;
  --color-inverse-surface: #303030;
  --color-inverse-on-surface: #f3f0f0;
  --color-outline: #86736d;
  --color-outline-variant: #d9c2bb;
  --color-surface-tint: #8f4c35;
  --color-primary: #8f4c35;
  --color-on-primary: #ffffff;
  --color-primary-container: #cc7e63;
  --color-on-primary-container: #4e1a07;
  --color-inverse-primary: #ffb59c;
  --color-secondary: #4a654e;
  --color-on-secondary: #ffffff;
  --color-secondary-container: #c9e8cb;
  --color-on-secondary-container: #23421f;
  --color-tertiary: #735c00;
  --color-on-tertiary: #ffffff;
  --color-tertiary-container: #cca72f;
  --color-on-tertiary-container: #4e3d00;
  --color-error: #ba1a1a;
  --color-on-error: #ffffff;
  --color-error-container: #ffdad6;
  --color-on-error-container: #93000a;
  --color-primary-fixed: #ffdbcf;
  --color-primary-fixed-dim: #ffb59c;
  --color-on-primary-fixed: #390c00;
  --color-on-primary-fixed-variant: #723520;
  --color-secondary-fixed: #cceace;
  --color-secondary-fixed-dim: #b0ceb2;
  --color-on-secondary-fixed: #07200f;
  --color-on-secondary-fixed-variant: #334d38;
  --color-tertiary-fixed: #ffe088;
  --color-tertiary-fixed-dim: #e9c349;
  --color-on-tertiary-fixed: #241a00;
  --color-on-tertiary-fixed-variant: #574500;
  --color-background: #fcf9f8;
  --color-on-background: #1b1c1c;
  --color-surface-variant: #e4e2e1;

  --font-display: "Plus Jakarta Sans", sans-serif;
  --font-body: "Inter", sans-serif;

  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --space-base: 8px;
  --space-xs: 4px;
  --space-sm: 12px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --container-max: 1100px;
  --gutter: 24px;

  --shadow-1: 0px 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-2: 0px 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-primary: 0px 10px 30px rgba(143, 76, 53, 0.15);

  --nav-height: 72px;
  --header-height: 64px;

  color-scheme: light;
}

[data-theme="dark"] {
  color-scheme: dark;
  --color-background: #18120e;
  --color-on-background: #f1e6e0;
  --color-surface: #18120e;
  --color-surface-dim: #14100c;
  --color-surface-bright: #3a2e27;
  --color-surface-container-lowest: #120d0a;
  --color-surface-container-low: #211a15;
  --color-surface-container: #271f19;
  --color-surface-container-high: #322922;
  --color-surface-container-highest: #3d322a;
  --color-on-surface: #f1e6e0;
  --color-on-surface-variant: #d8c3ba;
  --color-inverse-surface: #f1e6e0;
  --color-inverse-on-surface: #303030;
  --color-outline: #a08b83;
  --color-outline-variant: #52443d;
  --color-surface-tint: #ffb59c;
  --color-primary: #ffb59c;
  --color-on-primary: #5c2010;
  --color-primary-container: #723520;
  --color-on-primary-container: #ffdbcf;
  --color-inverse-primary: #8f4c35;
  --color-secondary: #b0ceb2;
  --color-on-secondary: #1c331f;
  --color-secondary-container: #334d38;
  --color-on-secondary-container: #cceace;
  --color-tertiary: #e9c349;
  --color-on-tertiary: #3d2f00;
  --color-tertiary-container: #574500;
  --color-on-tertiary-container: #ffe088;
  --color-error: #ffb4ab;
  --color-on-error: #690005;
  --color-error-container: #93000a;
  --color-on-error-container: #ffdad6;
  --color-surface-variant: #3d322a;
  --shadow-1: 0px 4px 20px rgba(0, 0, 0, 0.24);
  --shadow-2: 0px 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-primary: 0px 10px 30px rgba(0, 0, 0, 0.35);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-background);
  color: var(--color-on-background);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 24px;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.25s ease, color 0.25s ease;
}

h1, h2, h3, p, figure, blockquote {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

textarea, input {
  font: inherit;
  color: inherit;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; margin: 0; padding: 0; }

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

/* ---------- Type scale ---------- */
.text-display {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  line-height: 40px;
  letter-spacing: -0.02em;
}
@media (min-width: 768px) {
  .text-display { font-size: 40px; line-height: 48px; }
}
.text-headline-lg {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  line-height: 36px;
}
.text-headline-md {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  line-height: 28px;
}
.text-body-lg { font-family: var(--font-body); font-size: 18px; font-weight: 400; line-height: 28px; }
.text-body-md { font-family: var(--font-body); font-size: 16px; font-weight: 400; line-height: 24px; }
.text-label-md { font-family: var(--font-body); font-size: 14px; font-weight: 600; line-height: 20px; letter-spacing: 0.01em; }
.text-caption { font-family: var(--font-body); font-size: 12px; font-weight: 400; line-height: 16px; }

/* ---------- Layout ---------- */
.app-main {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-sm) 20px calc(var(--nav-height) + var(--space-md));
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  min-height: calc(100vh - var(--header-height));
}
@media (min-width: 768px) {
  .app-main { padding: var(--space-lg) var(--gutter) var(--space-xl); }
}

.view { animation: fade-slide-in 0.3s ease; }
@keyframes fade-slide-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
[hidden] { display: none !important; }

/* ---------- Header ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-height);
  background-color: var(--color-background);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}
@media (min-width: 768px) {
  .app-header { padding: 0 var(--gutter); }
}
.app-header__side { display: flex; align-items: center; gap: var(--space-sm); min-width: 40px; }
.app-header__logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-on-surface-variant);
  transition: background-color 0.2s ease, transform 0.15s ease, opacity 0.2s ease;
}
.icon-btn:hover { background-color: var(--color-surface-container-high); opacity: 0.9; }
.icon-btn:active { transform: scale(0.92); }
.icon-btn--brand { color: var(--color-primary); }

.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-container), var(--color-primary));
  color: var(--color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  border: 1px solid var(--color-outline-variant);
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.15s ease;
}
.avatar:hover { opacity: 0.85; }
.avatar:active { transform: scale(0.95); }

/* Desktop inline nav */
.desktop-nav {
  display: none;
  gap: var(--space-base);
}
@media (min-width: 768px) {
  .desktop-nav { display: flex; }
  .mobile-only { display: none !important; }
}
.desktop-nav__link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  color: var(--color-on-surface-variant);
  font: inherit;
  transition: background-color 0.2s ease, color 0.2s ease;
}
.desktop-nav__link:hover { background-color: var(--color-surface-container-high); }
.desktop-nav__link.is-active {
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  font-weight: 600;
}

/* ---------- Bottom nav (mobile) ---------- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-surface-container-lowest);
  box-shadow: 0px -4px 20px rgba(0, 0, 0, 0.06);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  padding-bottom: max(var(--space-sm), env(safe-area-inset-bottom));
}
@media (min-width: 768px) {
  .bottom-nav { display: none; }
}
.bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--color-on-surface-variant);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  transition: background-color 0.2s ease, transform 0.15s ease;
  min-width: 56px;
}
.bottom-nav__item:active { transform: scale(0.92); }
.bottom-nav__item.is-active {
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
}
.bottom-nav__item .material-symbols-outlined { font-size: 24px; }
.bottom-nav__label { font-size: 11px; font-weight: 600; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.15s ease, box-shadow 0.2s ease, opacity 0.2s ease, background-color 0.2s ease;
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover:not(:disabled) { opacity: 0.92; }
.btn-secondary {
  background-color: var(--color-surface-container);
  color: var(--color-on-surface);
}
.btn-secondary:hover:not(:disabled) { background-color: var(--color-surface-container-high); }
.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary-container);
}
.btn-ghost:hover { background-color: var(--color-surface-container); }
.btn-pill { border-radius: var(--radius-full); }
.btn-block { width: 100%; }
.btn-lg { min-height: 56px; font-size: 15px; }
.btn-danger { background-color: var(--color-error); color: var(--color-on-error); }

.btn .spinner { display: none; }
.btn.is-loading .spinner { display: inline-flex; }
.btn.is-loading .btn-label,
.btn.is-loading .material-symbols-outlined:not(.spinner) { display: none; }

/* ---------- Cards ---------- */
.card {
  background-color: var(--color-surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: var(--space-md);
  box-shadow: var(--shadow-1);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.card--bordered { border: 1px solid var(--color-outline-variant); border-color: color-mix(in srgb, var(--color-outline-variant) 40%, transparent); }
.card--hover:hover { box-shadow: var(--shadow-2); transform: translateY(-2px); }

/* ---------- Home view ---------- */
.hero-card {
  position: relative;
  overflow: hidden;
  background-color: var(--color-surface-container-lowest);
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  opacity: 0.08;
  pointer-events: none;
}
.hero-card__body { position: relative; z-index: 1; display: flex; flex-direction: column; gap: var(--space-md); height: 100%; justify-content: space-between; }
.hero-card__title { color: var(--color-on-surface); margin-bottom: 8px; }
.hero-card__subtitle { color: var(--color-on-surface-variant); max-width: 32ch; }

.bento-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
@media (min-width: 768px) {
  .bento-grid { grid-template-columns: 2fr 1fr; align-items: stretch; }
}

.goal-card { display: flex; flex-direction: column; justify-content: space-between; gap: var(--space-md); }
.goal-card__head { display: flex; align-items: center; justify-content: space-between; }
.goal-card__streak { display: flex; align-items: baseline; gap: 6px; }
.goal-card__streak .material-symbols-outlined { color: var(--color-tertiary-container); font-variation-settings: "FILL" 1; }

.ring-wrap { position: relative; width: 128px; height: 128px; margin: 0 auto; }
.ring-wrap svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-track { color: var(--color-surface-container-highest); }
.ring-progress { color: var(--color-secondary); transition: stroke-dashoffset 1s ease-out; stroke-linecap: round; }
.ring-progress--score { color: var(--color-secondary); }
.ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.section-title {
  color: var(--color-on-surface);
  margin-bottom: var(--space-sm);
  padding: 0 4px;
}

.activity-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.activity-item {
  background-color: var(--color-surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: var(--space-sm);
  box-shadow: var(--shadow-1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  transition: box-shadow 0.2s ease;
}
.activity-item:hover { box-shadow: var(--shadow-2); }
.activity-item__left { display: flex; align-items: center; gap: var(--space-sm); min-width: 0; }
.activity-item__icon {
  width: 48px; height: 48px; border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
}
.activity-item__text { min-width: 0; }
.activity-item__arabic {
  color: var(--color-on-surface);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.activity-item__meta { color: var(--color-on-surface-variant); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.chip--success { background-color: color-mix(in srgb, var(--color-secondary-container) 60%, transparent); color: var(--color-secondary); }
.chip--warning { background-color: color-mix(in srgb, var(--color-tertiary-container) 30%, transparent); color: var(--color-tertiary); }
.chip--error { background-color: var(--color-error); color: var(--color-on-error); }
.chip .material-symbols-outlined { font-size: 16px; }

.empty-state {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  color: var(--color-on-surface-variant);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}
.empty-state .material-symbols-outlined { font-size: 48px; color: var(--color-outline-variant); }

/* ---------- Practice view ---------- */
.practice-shell {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) 0;
}
.practice-card {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.practice-card__label {
  display: block;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-sm);
}
.practice-card__arabic {
  direction: rtl;
  text-align: center;
  color: var(--color-on-surface);
  min-height: 40px;
}
hr.divider { border: none; border-top: 1px solid color-mix(in srgb, var(--color-outline-variant) 40%, transparent); margin: 0; }

.textarea-field {
  width: 100%;
  background-color: var(--color-surface-container-low);
  border: 2px solid color-mix(in srgb, var(--color-outline-variant) 60%, transparent);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-size: 18px;
  line-height: 28px;
  color: var(--color-on-surface);
  resize: none;
  min-height: 120px;
  transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}
.textarea-field::placeholder { color: color-mix(in srgb, var(--color-on-surface-variant) 55%, transparent); }
.textarea-field:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-surface-container-lowest);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.kbd-hint {
  display: none;
  align-items: center;
  gap: 8px;
  color: var(--color-on-surface-variant);
}
@media (min-width: 768px) {
  .kbd-hint { display: flex; justify-content: flex-end; }
}
.kbd-hint kbd {
  background-color: var(--color-surface-variant);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 12px;
}

.skeleton {
  position: relative;
  overflow: hidden;
  background-color: var(--color-surface-container-high);
  border-radius: var(--radius);
  color: transparent !important;
}
.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
  animation: shimmer 1.4s infinite;
}
@keyframes shimmer { 100% { transform: translateX(100%); } }

/* ---------- Feedback view ---------- */
.score-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}
@media (min-width: 768px) {
  .score-card { flex-direction: row; text-align: left; }
}
.score-card__text { display: flex; flex-direction: column; gap: 8px; flex: 1; }
.level-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: center;
  background-color: color-mix(in srgb, var(--color-tertiary-container) 25%, transparent);
  color: var(--color-on-tertiary-container);
  padding: 6px 14px;
  border-radius: var(--radius-full);
}
@media (min-width: 768px) { .level-chip { align-self: flex-start; } }
.level-chip .material-symbols-outlined { font-size: 16px; font-variation-settings: "FILL" 1; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-sm);
  display: block;
}

.translation-block { line-height: 28px; }
.mistake {
  text-decoration-line: underline;
  text-decoration-style: solid;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  cursor: help;
  position: relative;
}
.mistake--grammar { text-decoration-color: color-mix(in srgb, var(--color-error) 55%, transparent); }
.mistake--spelling { text-decoration-color: var(--color-error); }
.mistake--vocabulary { text-decoration-color: var(--color-tertiary-container); }
.mistake__tip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 8px;
  width: max-content;
  max-width: 240px;
  background-color: var(--color-inverse-surface);
  color: var(--color-inverse-on-surface);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease;
  z-index: 20;
  font-size: 13px;
  line-height: 18px;
  pointer-events: none;
}
.mistake:hover .mistake__tip,
.mistake:focus-visible .mistake__tip,
.mistake.is-open .mistake__tip {
  opacity: 1;
  visibility: visible;
}

.tip-row {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  padding-top: var(--space-md);
  margin-top: var(--space-md);
  border-top: 1px solid var(--color-surface-variant);
  scrollbar-width: thin;
}
.tip-chip {
  flex-shrink: 0;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  max-width: 260px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  line-height: 18px;
}
.tip-chip--error { background-color: color-mix(in srgb, var(--color-error-container) 45%, transparent); color: var(--color-on-error-container); }
.tip-chip--tip { background-color: color-mix(in srgb, var(--color-tertiary-container) 25%, transparent); color: var(--color-on-tertiary-container); }
.tip-chip .material-symbols-outlined { font-size: 18px; flex-shrink: 0; }

.correction-card {
  position: relative;
  background-color: color-mix(in srgb, var(--color-secondary-fixed) 45%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-secondary-fixed-dim) 60%, transparent);
  border-radius: var(--radius-xl);
  padding: var(--space-md);
  padding-right: 56px;
}
.correction-card p { color: var(--color-on-surface); }
.copy-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-secondary);
  border-radius: var(--radius-full);
  transition: background-color 0.2s ease, transform 0.15s ease;
}
.copy-btn:hover { background-color: color-mix(in srgb, var(--color-secondary) 12%, transparent); }
.copy-btn:active { transform: scale(0.9); }

.detail-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 12px;
  color: var(--color-on-surface-variant);
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-outline-variant);
}
.detail-toggle .material-symbols-outlined { transition: transform 0.2s ease; }
.detail-toggle.is-open .material-symbols-outlined { transform: rotate(180deg); }

.detail-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.detail-row dt { color: var(--color-on-surface-variant); margin-bottom: 4px; }
.detail-row dd { margin: 0; color: var(--color-on-surface); }
.word-chip-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.word-chip {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  background-color: var(--color-surface-container-high);
  color: var(--color-on-surface-variant);
}
.mistake-list { display: flex; flex-direction: column; gap: 8px; margin-top: 6px; }
.mistake-list li { background: var(--color-surface-container-low); border-radius: var(--radius); padding: 8px 12px; }
.mistake-list b { color: var(--color-error); }

.action-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
@media (min-width: 640px) {
  .action-row { flex-direction: row; }
}
.action-row .btn { flex: 1; }

/* ---------- History view ---------- */
.stats-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.stats-card__top {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  justify-content: space-between;
}
@media (min-width: 768px) {
  .stats-card__top { flex-direction: row; align-items: flex-end; }
}
.stats-card__total { color: var(--color-primary); margin-top: 4px; }
.stats-pair { display: flex; gap: var(--space-sm); }
.stat-pill {
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  text-align: center;
}
.stat-pill--alt { background-color: var(--color-primary-container); color: var(--color-on-primary-container); }
.stat-pill__label { opacity: 0.85; margin-bottom: 2px; }

.progress-track {
  height: 8px;
  width: 100%;
  background-color: var(--color-surface-variant);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-track__fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-secondary), var(--color-secondary-fixed-dim));
  transition: width 1s ease-out;
}

.filter-row {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  padding-bottom: 4px;
}
.filter-chip {
  flex-shrink: 0;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface-container);
  color: var(--color-on-surface-variant);
  border: 1px solid var(--color-outline-variant);
  transition: background-color 0.2s ease, color 0.2s ease;
}
.filter-chip.is-active {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border-color: transparent;
}

.history-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
@media (min-width: 768px) {
  .history-grid { grid-template-columns: 1fr 1fr; }
}
.history-item {
  border: 1px solid var(--color-surface-container-highest);
  display: flex;
  flex-direction: column;
}
.history-item--flag {
  background-color: color-mix(in srgb, var(--color-error-container) 20%, transparent);
  border-color: color-mix(in srgb, var(--color-error-container) 70%, transparent);
}
.history-item__head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: var(--space-sm); gap: var(--space-sm); }
.history-item__section { margin-bottom: var(--space-sm); }
.history-item__section-label { text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-outline); margin-bottom: 4px; display: block; }
.history-item__arabic { direction: rtl; color: var(--color-on-surface); }
.history-item__translation { color: var(--color-on-surface-variant); }
.history-item__translation--wrong { text-decoration: line-through; opacity: 0.7; }
.history-item__translation--fixed { color: var(--color-error); margin-top: 4px; }
.history-item__foot {
  margin-top: auto;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-surface-variant);
  display: flex;
  justify-content: flex-end;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-primary);
  transition: opacity 0.2s ease;
}
.text-link:hover { opacity: 0.75; }
.text-link .material-symbols-outlined { font-size: 18px; }

.load-more-wrap { display: flex; justify-content: center; padding-bottom: var(--space-md); }

/* ---------- Profile view ---------- */
.profile-header { display: flex; flex-direction: column; align-items: center; gap: var(--space-sm); text-align: center; }
.profile-header .avatar { width: 84px; height: 84px; font-size: 28px; }
.stat-trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); width: 100%; }
.stat-trio__item { text-align: center; background-color: var(--color-surface-container-low); border-radius: var(--radius-md); padding: var(--space-sm); }
.stat-trio__value { color: var(--color-primary); }
.stat-trio__label { color: var(--color-on-surface-variant); }

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
}
.settings-row + .settings-row { border-top: 1px solid var(--color-surface-variant); }
.settings-row__text { display: flex; flex-direction: column; gap: 2px; }
.settings-row__desc { color: var(--color-on-surface-variant); }

.switch {
  position: relative;
  width: 48px;
  height: 28px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface-container-highest);
  flex-shrink: 0;
  transition: background-color 0.2s ease;
}
.switch::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background-color: var(--color-surface-container-lowest);
  box-shadow: var(--shadow-1);
  transition: transform 0.2s ease;
}
.switch.is-on { background-color: var(--color-primary); }
.switch.is-on::after { transform: translateX(20px); background-color: var(--color-on-primary); }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label { color: var(--color-on-surface-variant); }
.field input[type="text"],
.field input[type="password"],
.field input[type="number"] {
  height: 48px;
  padding: 0 14px;
  background-color: var(--color-surface-container-low);
  border: 2px solid color-mix(in srgb, var(--color-outline-variant) 60%, transparent);
  border-radius: var(--radius-md);
  color: var(--color-on-surface);
  transition: border-color 0.2s ease;
}
.field input:focus {
  outline: none;
  border-color: var(--color-primary);
}
.field-hint { color: var(--color-on-surface-variant); }
.field-row { display: flex; gap: 8px; }
.field-row input { flex: 1; }

/* ---------- Toast ---------- */
.toast-stack {
  position: fixed;
  bottom: calc(var(--nav-height) + 12px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  width: 100%;
  padding: 0 16px;
  pointer-events: none;
}
@media (min-width: 768px) {
  .toast-stack { bottom: 24px; }
}
.toast {
  pointer-events: auto;
  background-color: var(--color-inverse-surface);
  color: var(--color-inverse-on-surface);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  animation: toast-in 0.25s ease;
  max-width: 92vw;
}
.toast--error { background-color: var(--color-error); color: var(--color-on-error); }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(20, 14, 10, 0.5);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 90;
  animation: overlay-in 0.2s ease;
}
@media (min-width: 640px) {
  .modal-overlay { align-items: center; }
}
@keyframes overlay-in { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background-color: var(--color-surface-container-lowest);
  width: 100%;
  max-width: 440px;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  box-shadow: var(--shadow-2);
  animation: modal-in 0.25s ease;
  max-height: 85vh;
  overflow-y: auto;
}
@media (min-width: 640px) {
  .modal { border-radius: var(--radius-xl); }
}
@keyframes modal-in {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.modal__head { display: flex; align-items: center; justify-content: space-between; }

/* ---------- Drawer (mobile menu) ---------- */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(20, 14, 10, 0.4);
  z-index: 80;
}
.drawer {
  position: fixed;
  top: 0; left: 0;
  bottom: 0;
  width: min(280px, 80vw);
  background-color: var(--color-surface-container-lowest);
  z-index: 81;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  box-shadow: var(--shadow-2);
  animation: drawer-in 0.25s ease;
}
@keyframes drawer-in { from { transform: translateX(-100%); } to { transform: translateX(0); } }
.drawer__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  color: var(--color-on-surface);
}
.drawer__link:hover { background-color: var(--color-surface-container-high); }
.drawer__link.is-active { background-color: var(--color-secondary-container); color: var(--color-on-secondary-container); }

/* ---------- Material Symbols ---------- */
.material-symbols-outlined {
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
  vertical-align: middle;
  user-select: none;
}
.fill { font-variation-settings: "FILL" 1; }

/* ---------- Spinner ---------- */
.spinner {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: currentColor;
  animation: spin 0.7s linear infinite;
  display: inline-flex;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Misc utility ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.flex-col { display: flex; flex-direction: column; }
.gap-sm { gap: var(--space-sm); }
.w-full { width: 100%; }
.muted { color: var(--color-on-surface-variant); }

/* ---------- Word translation popover ---------- */
.word-popover {
  position: fixed;
  z-index: 100;
  background-color: var(--color-surface-container-high);
  color: var(--color-on-surface);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  box-shadow: var(--shadow-2);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  max-width: 90vw;
  white-space: nowrap;
  animation: popover-in 0.15s ease;
  pointer-events: auto;
}
.word-popover__word {
  font-weight: 600;
  color: var(--color-primary);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.word-popover__arrow {
  font-size: 16px;
  color: var(--color-on-surface-variant);
  flex-shrink: 0;
}
.word-popover__translation {
  color: var(--color-on-surface);
  font-weight: 500;
}
.word-popover__spinner {
  width: 16px; height: 16px;
  flex-shrink: 0;
}
@keyframes popover-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}