/* PotatoPoor app shell — mockup layout */
.pp-app-body { min-height: 100vh; background: var(--pp-bg); }
.hidden { display: none !important; }
.pp-loading { text-align: center; color: var(--pp-text-muted); padding: 3rem 1rem; }

.pp-app {
  display: grid;
  grid-template-columns: var(--pp-sidebar-w) 1fr;
  min-height: 100vh;
}

/* Sidebar */
.pp-sidebar {
  background: #1e3a34;
  color: #fff;
  display: flex;
  flex-direction: column;
  padding: 1.25rem .85rem;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 40;
  isolation: isolate;
}
.pp-sidebar-backdrop { display: none; }
.pp-sidebar__brand {
  display: flex; align-items: center; gap: .65rem;
  font-weight: 800; font-size: 1rem; color: #fff; margin-bottom: 1.75rem; padding: 0 .35rem;
}
.pp-sidebar__brand svg { width: 32px; height: 32px; flex-shrink: 0; }
.pp-sidebar__nav { display: grid; gap: .25rem; flex: 1; }
.pp-sidebar__item {
  display: flex; align-items: center;
  padding: .72rem .85rem; border: none; border-radius: var(--pp-radius);
  background: transparent; color: rgba(255,255,255,.78); font-size: .9rem; text-align: right;
  transition: var(--pp-transition); width: 100%;
}
.pp-sidebar__item:hover { background: rgba(255,255,255,.08); color: #fff; }
.pp-sidebar__item.is-active { background: rgba(255,255,255,.14); color: #fff; font-weight: 600; }
.pp-sidebar__logout {
  margin-top: auto; padding: .65rem .85rem; border: none; border-radius: var(--pp-radius);
  background: rgba(255,255,255,.08); color: rgba(255,255,255,.8); font-size: .85rem;
}
.pp-sidebar__logout:hover { background: rgba(255,255,255,.15); color: #fff; }

/* Main wrap */
.pp-main-wrap { display: flex; flex-direction: column; min-width: 0; }
.pp-topbar {
  height: var(--pp-topbar-h); display: flex; align-items: center; gap: 1rem;
  padding: 0 1.5rem; background: var(--pp-surface); border-bottom: 1px solid var(--pp-border-soft);
  position: sticky; top: 0; z-index: 30;
}
.pp-menu-toggle {
  display: none; border: none; background: transparent; font-size: 1.25rem; padding: .35rem;
}
.pp-topbar__search { flex: 1; max-width: 360px; }
.pp-topbar__actions { display: flex; align-items: center; gap: .65rem; margin-right: auto; }
.pp-topbar__user { display: flex; align-items: center; gap: .55rem; font-size: .88rem; font-weight: 600; }

.pp-main { flex: 1; padding: 1.5rem; overflow-x: hidden; }

/* Dashboard grid */
.pp-dash-head { margin-bottom: 1.25rem; }
.pp-dash-head h1 { margin: 0; font-size: 1.35rem; font-weight: 800; }
.pp-dash-head p { margin: .25rem 0 0; color: var(--pp-text-muted); font-size: .88rem; }

.pp-dash-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1rem;
}
.pp-dash-grid--3 { grid-template-columns: repeat(3, 1fr); }
.pp-dash-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: .85rem; margin-bottom: 1rem; }

.pp-mini-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; margin-bottom: 1rem; }
.pp-mini-stat {
  background: var(--pp-surface); border: 1px solid var(--pp-border-soft);
  border-radius: var(--pp-radius); padding: .85rem 1rem;
}
.pp-mini-stat .n { font-size: 1.25rem; font-weight: 800; }
.pp-mini-stat .l { font-size: .75rem; color: var(--pp-text-muted); }

.pp-review-card .pp-review-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; text-align: center;
  margin: 1rem 0; font-size: .82rem;
}
.pp-review-card .pp-review-stats strong { display: block; font-size: 1.1rem; }

.pp-wod .hw { font-size: 1.2rem; font-weight: 800; margin-bottom: .35rem; }
.pp-wod .def { font-size: .85rem; color: var(--pp-text-muted); margin-bottom: .75rem; line-height: 1.55; }

/* Word card + tools (bot layout) */
.pp-word-stack { display: grid; gap: 1rem; margin-bottom: 1rem; }
.pp-word-tools {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: .55rem;
}
.pp-word-tools--review {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.pp-word-tools--review .pp-tool-btn {
  min-width: 0; padding: .68rem .3rem; font-size: .76rem; white-space: nowrap;
}
.pp-tool-btn {
  padding: .72rem .85rem; border-radius: 999px; border: 1px solid var(--pp-border);
  background: var(--pp-surface); font-size: .85rem; text-align: center; color: var(--pp-text);
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
}
.pp-tool-btn:hover { border-color: var(--pp-green-600); background: var(--pp-green-50); }
.pp-tool-btn--primary { background: var(--pp-green-800); color: #fff; border-color: var(--pp-green-800); }
.pp-tool-btn--primary:hover { background: var(--pp-green-700); }
.pp-tool-btn--danger { color: var(--pp-red); }
.pp-tool-btn:disabled { opacity: .55; cursor: wait; }

@media (max-width: 520px) {
  .pp-word-tools { grid-template-columns: 1fr; }
  .pp-word-tools.pp-word-tools--review { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.pp-word-detail .hw { font-size: 1.75rem; font-weight: 800; margin: 0 0 .5rem; }
.pp-word-detail .ipa { color: var(--pp-text-muted); font-size: .9rem; margin-bottom: .75rem; }
.pp-word-detail .def-en { font-size: .95rem; line-height: 1.65; margin-bottom: .65rem; }
.pp-word-detail .example {
  font-style: italic; color: var(--pp-text-muted); font-size: .88rem;
  padding: .65rem .85rem; background: var(--pp-bg); border-radius: var(--pp-radius-sm); margin-bottom: .75rem;
}
.pp-word-detail .def-fa {
  font-size: .92rem; padding-top: .75rem; border-top: 1px solid var(--pp-border-soft);
  color: var(--pp-green-800); font-weight: 600;
}
.pp-word-detail .def-fa.def-fa--hidden { display: none; }
.pp-word-detail .word-image {
  width: 100%; max-height: 200px; border-radius: var(--pp-radius); overflow: hidden; margin-bottom: 1rem;
}
.pp-word-detail .word-image img { width: 100%; height: 200px; object-fit: cover; }
.pp-word-detail .word-image-error { display: none; }
.pp-word-detail .word-image.img-missing {
  display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 120px;
  background: var(--pp-bg); color: var(--pp-text-soft); font-size: .85rem;
}
.pp-word-detail .word-image.img-missing .word-image-error { display: block; }
.pp-accent-audio {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-bottom: 1rem;
  border: 1px solid var(--pp-border); border-radius: 999px; overflow: hidden;
}
.pp-accent-audio-btn {
  padding: .68rem .75rem; border: 0; border-radius: 0;
  background: var(--pp-surface); font-size: .78rem; color: var(--pp-text-muted);
  text-align: center; cursor: pointer;
}
.pp-accent-audio-btn + .pp-accent-audio-btn { border-right: 1px solid var(--pp-border); }
.pp-accent-audio-btn:hover { background: var(--pp-green-50); color: var(--pp-green-800); }
.pp-accent-audio-btn.is-playing { background: var(--pp-green-800); color: #fff; }
.pp-accent-audio-btn:disabled { opacity: .55; cursor: wait; }
.pp-simpler-panel {
  margin-top: .75rem; padding: 1rem 1.1rem;
  border: 1px dashed var(--pp-green-600); background: var(--pp-green-50);
}
.pp-simpler-panel .def-en { margin-bottom: .5rem; }
.pp-flashcard .pp-accent-audio { width: 100%; max-width: 360px; margin-bottom: 1.25rem; }
.word-image-attribution {
  display: block; margin-top: .35rem; color: var(--pp-text-muted); font-size: .7rem;
}
.word-image-attribution a { color: inherit; text-decoration: underline; }

/* Review flashcard */
.pp-review-session { max-width: 640px; margin: 0 auto; }
.pp-review-session .pp-rating {
  grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .5rem; margin: 0;
}
.pp-review-session .pp-rate-btn {
  min-width: 0; padding: .72rem .25rem; font-size: .76rem; white-space: nowrap;
}
.pp-review-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; font-size: .88rem; color: var(--pp-text-muted); }
.pp-flashcard {
  background: var(--pp-surface); border: 1px solid var(--pp-border-soft);
  border-radius: var(--pp-radius-xl); padding: 2rem 1.5rem; text-align: center;
  box-shadow: var(--pp-shadow); min-height: 280px; display: flex; flex-direction: column;
  justify-content: center; align-items: center;
}
.pp-flashcard .hw { font-size: 2rem; font-weight: 800; margin-bottom: .5rem; }
.pp-flashcard .ipa { color: var(--pp-text-muted); margin-bottom: 1rem; }
.pp-flashcard .def { font-size: .95rem; color: var(--pp-text-muted); max-width: 28em; line-height: 1.6; }

/* Words page */
.pp-words-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.pp-words-head h1 { margin: 0; font-size: 1.25rem; font-weight: 800; }

/* Auth */
.pp-auth-wrap {
  min-height: 100vh; display: grid; place-items: center; padding: 2rem 1rem;
  background: linear-gradient(135deg, var(--pp-green-50), var(--pp-bg));
}
.pp-auth-card {
  width: min(100%, 420px); background: var(--pp-surface); border-radius: var(--pp-radius-xl);
  padding: 2rem; box-shadow: var(--pp-shadow-lg); border: 1px solid var(--pp-border-soft);
}
.pp-auth-card h1 { margin: 0 0 .35rem; font-size: 1.35rem; font-weight: 800; text-align: center; }
.pp-auth-card .sub { text-align: center; color: var(--pp-text-muted); font-size: .88rem; margin-bottom: 1.5rem; }
.pp-auth-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; margin-bottom: 1.25rem; }
.pp-auth-tabs button {
  padding: .65rem; border: 1px solid var(--pp-border); border-radius: var(--pp-radius);
  background: var(--pp-bg); font-weight: 600; font-size: .88rem;
}
.pp-auth-tabs button.active { background: var(--pp-green-800); color: #fff; border-color: var(--pp-green-800); }

/* Onboarding chips */
.pp-chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.pp-chip {
  padding: .55rem 1rem; border: 1px solid var(--pp-border); border-radius: 999px;
  background: var(--pp-surface); font-size: .88rem;
}
.pp-chip:hover { border-color: var(--pp-green-600); background: var(--pp-green-50); }

/* Settings profile */
.pp-settings-profile {
  display: flex; align-items: center; gap: 1rem; padding-bottom: 1rem;
  border-bottom: 1px solid var(--pp-border-soft); margin-bottom: .5rem;
}
.pp-settings-profile .pp-avatar { width: 48px; height: 48px; font-size: 1rem; }
.pp-settings-profile strong { display: block; font-size: 1rem; }
.pp-settings-profile span { font-size: .82rem; color: var(--pp-text-muted); }

.pp-offline-banner {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--pp-orange); color: #fff; text-align: center; padding: .5rem; font-size: .85rem;
}

/* Mobile */
@media (max-width: 900px) {
  .pp-app { grid-template-columns: 1fr; }
  .pp-sidebar {
    position: fixed; right: 0; top: 0; transform: translateX(100%);
    transition: transform .25s ease, visibility 0s linear .25s;
    visibility: hidden; width: min(320px, 86vw); max-width: 100%;
    min-height: 100dvh; height: 100dvh;
    padding-top: max(1.25rem, env(safe-area-inset-top));
    padding-bottom: max(1.25rem, env(safe-area-inset-bottom));
    box-shadow: -12px 0 32px rgba(0,0,0,.28);
    overflow-y: auto; overscroll-behavior: contain;
  }
  .pp-sidebar.is-open {
    transform: translateX(0); visibility: visible;
    transition: transform .25s ease, visibility 0s;
  }
  .pp-sidebar-backdrop {
    display: block; position: fixed; inset: 0; z-index: 35;
    border: 0; padding: 0; margin: 0; background: rgba(7,20,17,.58);
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: opacity .25s ease, visibility 0s linear .25s;
  }
  .pp-sidebar-backdrop.is-open {
    opacity: 1; visibility: visible; pointer-events: auto;
    transition: opacity .25s ease, visibility 0s;
  }
  body.pp-nav-open { overflow: hidden; overscroll-behavior: none; }
  .pp-menu-toggle { display: block; }
  .pp-sidebar__item, .pp-sidebar__logout { min-height: 48px; }
  .pp-dash-grid, .pp-dash-grid--3, .pp-word-layout, .pp-dash-row, .pp-mini-stats { grid-template-columns: 1fr; }
  .pp-topbar__search { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  .pp-sidebar, .pp-sidebar-backdrop { transition: none !important; }
}

@media (max-width: 520px) {
  .pp-main { padding: 1rem; }
  .pp-mini-stats { grid-template-columns: repeat(2, 1fr); }
  .pp-topbar { gap: .5rem; padding: 0 .75rem; }
  .pp-topbar__search { min-width: 0; }
  .pp-topbar__actions { gap: .4rem; }
  .pp-topbar__user > span:first-child { display: none; }
}

/* v19: strict small-screen containment, including iPhone 14 Pro Max. */
html, body { width: 100%; max-width: 100%; overflow-x: clip; }
.pp-app-body { min-height: 100dvh; }
.pp-app, .pp-main-wrap, .pp-topbar, .pp-main {
  width: 100%; max-width: 100%; min-width: 0; overflow-x: clip;
}
.pp-main > *, .pp-review-session, .pp-word-stack, .pp-flashcard, .pp-card {
  min-width: 0; max-width: 100%;
}
.pp-topbar__search { flex: 1 1 220px; min-width: 0; }
.pp-topbar__search input { min-width: 0; width: 100%; }
.pp-topbar__actions { flex: 0 0 auto; min-width: 0; }
.pp-word-tools--review .pp-tool-btn,
.pp-review-session .pp-rate-btn {
  min-width: 0; white-space: normal; overflow-wrap: anywhere;
}
@media (max-width: 520px) {
  .pp-main { padding: .8rem; }
  .pp-topbar {
    gap: .4rem;
    padding-right: max(.6rem, env(safe-area-inset-right));
    padding-left: max(.6rem, env(safe-area-inset-left));
  }
  .pp-menu-toggle { flex: 0 0 38px; width: 38px; }
  .pp-topbar__search { flex: 1 1 auto; padding-inline: .65rem; }
  .pp-topbar__actions > .pp-icon-btn { display: none; }
  .pp-topbar__user { gap: 0; }
  .pp-flashcard { padding: 1.25rem .8rem; }
  .pp-review-session .pp-rating,
  .pp-word-tools.pp-word-tools--review { gap: .35rem; }
  .pp-review-session .pp-rate-btn,
  .pp-word-tools--review .pp-tool-btn { padding-inline: .15rem; font-size: .7rem; }
}
@media (max-width: 360px) {
  .pp-topbar { gap: .25rem; }
  .pp-avatar { width: 32px; height: 32px; font-size: .72rem; }
  .pp-review-session .pp-rate-btn,
  .pp-word-tools--review .pp-tool-btn { font-size: .66rem; }
}