/* PotatoPoor shared UI components */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--pp-font); color: var(--pp-text); background: var(--pp-bg); line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.pp-container { width: min(100% - 2rem, 1200px); margin-inline: auto; }

/* Buttons */
.pp-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  padding: .72rem 1.25rem; border-radius: 999px; font-weight: 600; font-size: .92rem;
  border: none; transition: var(--pp-transition); white-space: nowrap;
}
.pp-btn--primary { background: var(--pp-green-800); color: #fff; }
.pp-btn--primary:hover { background: var(--pp-green-700); }
.pp-btn--outline { background: #fff; color: var(--pp-green-800); border: 1.5px solid var(--pp-border); }
.pp-btn--outline:hover { border-color: var(--pp-green-600); background: var(--pp-green-50); }
.pp-btn--ghost { background: transparent; color: var(--pp-text-muted); border: 1px solid var(--pp-border); }
.pp-btn--sm { padding: .45rem .9rem; font-size: .82rem; }
.pp-btn--block { width: 100%; }

/* Cards */
.pp-card {
  background: var(--pp-surface); border: 1px solid var(--pp-border-soft);
  border-radius: var(--pp-radius-lg); box-shadow: var(--pp-shadow); padding: 1.25rem;
}
.pp-card__title { margin: 0 0 .85rem; font-size: 1rem; font-weight: 700; color: var(--pp-text); }
.pp-card__sub { margin: 0; font-size: .82rem; color: var(--pp-text-muted); }

/* Stat pills */
.pp-stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: .85rem; }
.pp-stat {
  background: var(--pp-surface); border: 1px solid var(--pp-border-soft);
  border-radius: var(--pp-radius); padding: .85rem 1rem; display: flex; align-items: center; gap: .75rem;
}
.pp-stat__icon {
  width: 40px; height: 40px; border-radius: 10px; background: var(--pp-green-50);
  display: grid; place-items: center; color: var(--pp-green-800); flex-shrink: 0;
}
.pp-stat__num { font-size: 1.15rem; font-weight: 700; line-height: 1.2; }
.pp-stat__lbl { font-size: .75rem; color: var(--pp-text-muted); }

/* Site header */
.pp-site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem 0; flex-wrap: wrap;
}
.pp-site-nav { display: flex; gap: 1.5rem; font-size: .9rem; color: var(--pp-text-muted); flex-wrap: wrap; }
.pp-site-nav a:hover { color: var(--pp-green-800); }
.pp-site-actions { display: flex; align-items: center; gap: .65rem; }
.pp-icon-btn {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--pp-border);
  background: var(--pp-surface); display: grid; place-items: center; color: var(--pp-text-muted);
  transition: var(--pp-transition);
}
.pp-icon-btn:hover { border-color: var(--pp-green-600); color: var(--pp-green-800); }
.pp-avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--pp-green-100);
  display: grid; place-items: center; font-size: .85rem; font-weight: 700; color: var(--pp-green-800);
}

/* Brand */
.pp-brand { display: inline-flex; align-items: center; gap: .5rem; font-weight: 800; font-size: 1.1rem; color: var(--pp-green-800); }
.pp-brand svg { width: 28px; height: 28px; }

/* Hero */
.pp-hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: 2.5rem; align-items: center; padding: 2rem 0 3rem; }
.pp-hero h1 { font-size: clamp(1.85rem, 4vw, 2.75rem); line-height: 1.35; margin: 0 0 1rem; font-weight: 800; color: var(--pp-text); }
.pp-hero .lead { color: var(--pp-text-muted); margin: 0 0 1.5rem; max-width: 32em; font-size: .98rem; }
.pp-hero__cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 2rem; }

/* Book visual */
.pp-book-scene { position: relative; min-height: 340px; display: grid; place-items: center; }
.pp-book {
  width: min(100%, 320px); aspect-ratio: 4/3; background: linear-gradient(145deg, #2d5a4e, #1e3a34);
  border-radius: 8px 20px 20px 8px; box-shadow: var(--pp-shadow-lg); position: relative;
  transform: perspective(800px) rotateY(-8deg) rotateX(4deg);
}
.pp-book::before {
  content: ""; position: absolute; inset: 8% 6% 8% 12%; background: #fafcfb;
  border-radius: 4px 12px 12px 4px; border: 1px solid var(--pp-border);
}
.pp-book__label {
  position: absolute; top: 18%; right: 10%; font-size: .7rem; color: var(--pp-green-800);
  font-weight: 700; writing-mode: vertical-rl; transform: rotate(180deg); opacity: .5;
}
.pp-word-float {
  position: absolute; top: 50%; left: 50%; transform: translate(-35%, -55%);
  width: min(92%, 280px); background: var(--pp-surface); border-radius: var(--pp-radius-lg);
  box-shadow: var(--pp-shadow-lg); padding: 1.1rem; border: 1px solid var(--pp-border-soft);
}
.pp-word-float .hw { font-size: 1.35rem; font-weight: 800; margin-bottom: .25rem; }
.pp-word-float .ipa { color: var(--pp-text-muted); font-size: .85rem; margin-bottom: .5rem; }
.pp-word-float .pos { display: inline-block; background: var(--pp-green-50); color: var(--pp-green-800);
  padding: .15rem .55rem; border-radius: 999px; font-size: .72rem; margin-bottom: .5rem; }
.pp-word-float .def { font-size: .82rem; color: var(--pp-text-muted); line-height: 1.5; }
.pp-play-mini {
  position: absolute; bottom: 1rem; left: 1rem; width: 36px; height: 36px; border-radius: 50%;
  background: var(--pp-green-800); color: #fff; border: none; display: grid; place-items: center;
}

/* Footer */
.pp-footer {
  border-top: 1px solid var(--pp-border); padding: 2rem 0; margin-top: 2rem;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
  font-size: .85rem; color: var(--pp-text-muted);
}
.pp-footer__links { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.pp-footer__links a:hover { color: var(--pp-green-800); }
.pp-social { display: flex; gap: .65rem; }
.pp-social a {
  width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--pp-border);
  display: grid; place-items: center; color: var(--pp-text-muted);
}
.pp-social a:hover { color: var(--pp-green-800); border-color: var(--pp-green-600); }

/* Tabs */
.pp-tabs { display: flex; gap: .35rem; border-bottom: 1px solid var(--pp-border); margin-bottom: 1rem; }
.pp-tab {
  padding: .55rem 1rem; border: none; background: transparent; color: var(--pp-text-muted);
  font-size: .88rem; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.pp-tab.is-active { color: var(--pp-green-800); border-bottom-color: var(--pp-green-800); font-weight: 600; }

/* Table */
.pp-table-wrap { overflow-x: auto; }
.pp-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.pp-table th {
  text-align: right; padding: .75rem .85rem; color: var(--pp-text-muted); font-weight: 600;
  border-bottom: 1px solid var(--pp-border); font-size: .8rem;
}
.pp-table td { padding: .85rem; border-bottom: 1px solid var(--pp-border-soft); vertical-align: middle; }
.pp-table tr:hover td { background: var(--pp-green-50); }
.pp-table .word-cell { font-weight: 700; }
.pp-badge {
  display: inline-block; padding: .2rem .55rem; border-radius: 999px; font-size: .75rem; font-weight: 600;
}
.pp-badge--review { background: var(--pp-orange-bg); color: #b8730a; }
.pp-badge--learn { background: var(--pp-lime-bg); color: #3d8b40; }
.pp-badge--new { background: var(--pp-green-50); color: var(--pp-green-800); }

/* Progress ring */
.pp-ring { position: relative; width: 120px; height: 120px; margin-inline: auto; }
.pp-ring svg { transform: rotate(-90deg); }
.pp-ring__text {
  position: absolute; inset: 0; display: grid; place-items: center; font-size: 1.35rem; font-weight: 800;
}

/* Chart bars */
.pp-bars { display: flex; align-items: flex-end; gap: .45rem; height: 120px; padding-top: .5rem; }
.pp-bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: .35rem; height: 100%; justify-content: flex-end; }
.pp-bar {
  width: 100%; max-width: 28px; background: var(--pp-green-600); border-radius: 6px 6px 0 0;
  min-height: 4px; transition: height .3s ease;
}
.pp-bar-col span { font-size: .68rem; color: var(--pp-text-soft); }

/* Line chart */
.pp-line-chart { width: 100%; height: 140px; }
.pp-line-chart polyline { fill: none; stroke: var(--pp-green-600); stroke-width: 2.5; }
.pp-line-chart .area { fill: url(#ppChartGrad); opacity: .35; }

/* Rating row */
.pp-rating { display: grid; grid-template-columns: repeat(4, 1fr); gap: .65rem; margin-top: 1.25rem; }
.pp-rate-btn {
  padding: .85rem .5rem; border: none; border-radius: var(--pp-radius); font-weight: 700;
  font-size: .82rem; color: #fff; transition: transform .12s ease;
}
.pp-rate-btn:hover { transform: translateY(-2px); }
.pp-rate-btn--1 { background: var(--pp-red); }
.pp-rate-btn--2 { background: var(--pp-orange); }
.pp-rate-btn--3 { background: var(--pp-lime); }
.pp-rate-btn--4 { background: var(--pp-easy); }

/* Accent toggle */
.pp-accent-toggle {
  display: inline-flex; border: 1px solid var(--pp-border); border-radius: 999px; overflow: hidden;
}
.pp-accent-toggle button {
  padding: .4rem .85rem; border: none; background: transparent; font-size: .78rem; color: var(--pp-text-muted);
}
.pp-accent-toggle button.is-active { background: var(--pp-green-800); color: #fff; }

/* Search */
.pp-search {
  display: flex; align-items: center; gap: .5rem; background: var(--pp-bg);
  border: 1px solid var(--pp-border); border-radius: 999px; padding: .5rem 1rem; max-width: 280px;
}
.pp-search input {
  border: none; background: transparent; flex: 1; font-family: inherit; font-size: .88rem; outline: none;
}

/* Category list */
.pp-cat-list { display: grid; gap: .55rem; }
.pp-cat-item {
  display: flex; align-items: center; justify-content: space-between; padding: .65rem .75rem;
  border-radius: var(--pp-radius-sm); border: 1px solid var(--pp-border-soft);
}
.pp-cat-item:hover { background: var(--pp-green-50); }
.pp-cat-dot { width: 8px; height: 8px; border-radius: 50%; margin-left: .5rem; }

/* Alert */
.pp-alert { padding: .75rem 1rem; border-radius: var(--pp-radius); font-size: .88rem; margin-bottom: 1rem; }
.pp-alert--err { background: var(--pp-red-bg); color: var(--pp-red); }
.pp-alert--ok { background: var(--pp-lime-bg); color: #3d8b40; }
.pp-alert--info { background: var(--pp-orange-bg); color: #b8730a; }

/* Form */
.pp-form { display: grid; gap: .85rem; }
.pp-field label { display: block; font-size: .85rem; color: var(--pp-text-muted); margin-bottom: .35rem; }
.pp-field input, .pp-field select, .pp-field textarea {
  width: 100%; padding: .72rem .9rem; border: 1px solid var(--pp-border); border-radius: var(--pp-radius);
  font-family: inherit; font-size: .95rem; background: var(--pp-surface);
}
.pp-field input:focus, .pp-field select:focus { outline: 2px solid var(--pp-green-100); border-color: var(--pp-green-600); }

/* Toggle switch */
.pp-switch { display: flex; align-items: center; justify-content: space-between; padding: .85rem 0; border-bottom: 1px solid var(--pp-border-soft); }
.pp-switch__track {
  width: 44px; height: 24px; border-radius: 999px; background: var(--pp-border); position: relative;
  transition: var(--pp-transition); cursor: pointer; border: none; padding: 0;
}
.pp-switch__track.is-on { background: var(--pp-green-800); }
.pp-switch__track::after {
  content: ""; position: absolute; top: 3px; right: 3px; width: 18px; height: 18px;
  border-radius: 50%; background: #fff; transition: var(--pp-transition);
}
.pp-switch__track.is-on::after { right: 23px; }

@media (max-width: 960px) {
  .pp-hero, .pp-stat-row { grid-template-columns: 1fr; }
  .pp-stat-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .pp-stat-row { grid-template-columns: 1fr; }
  .pp-rating { grid-template-columns: repeat(2, 1fr); }
}