:root {
  color-scheme: light;
  --bg: #f4f4f1;
  --card: #ffffff;
  --ink: #1c1c1a;
  --muted: #6f6f6a;
  --accent: #e2401f;
  --border: #e3e2dc;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html { -webkit-text-size-adjust: 100%; height: 100%; }

body {
  margin: 0;
  font-family: Barlow, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
}

.topbar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 16px;
  padding-top: calc(8px + env(safe-area-inset-top, 0px));
  border-bottom: 1px solid var(--border);
  background: var(--card);
}

.topbar h1 {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1.15rem;
  margin: 0;
  white-space: nowrap;
  text-transform: uppercase;
}

.user-box { display: flex; align-items: center; gap: 12px; font-size: 0.9rem; color: var(--muted); min-width: 0; }
#userEmail { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 45vw; }
.link-btn {
  background: none; border: none; color: var(--accent); cursor: pointer;
  font-size: 0.9rem; padding: 6px 0; text-decoration: underline;
  touch-action: manipulation;
}

.settings-wrap { position: relative; }
.icon-btn {
  background: none; border: 1px solid var(--border); border-radius: 8px;
  width: 36px; height: 36px; padding: 0;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 1.4rem; line-height: 1; touch-action: manipulation;
}
.settings-menu {
  position: absolute; right: 0; top: calc(100% + 6px);
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12); min-width: 190px; overflow: hidden; z-index: 20;
}
.menu-item {
  display: block; width: 100%; text-align: left; padding: 12px 14px;
  background: none; border: none; cursor: pointer; font-size: 0.9rem;
  color: var(--ink); touch-action: manipulation;
}
.menu-item:hover { background: var(--bg); }
.menu-item.danger { color: #c0392b; }
.menu-item + .menu-item { border-top: 1px solid var(--border); }

.modal-overlay {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.45);
  display: flex; align-items: center; justify-content: center;
  padding: 16px; z-index: 50;
}
.modal-card { background: var(--card); border-radius: 14px; padding: 20px; max-width: 340px; width: 100%; }
.modal-card p { margin: 0 0 18px; font-size: 0.95rem; color: var(--ink); }
.modal-card label {
  display: block; text-align: left; font-size: 0.85rem; color: var(--muted);
  margin: -6px 0 16px;
}
.modal-card input {
  display: block; width: 100%; margin-top: 6px; padding: 10px; min-height: 44px;
  border-radius: 8px; border: 1px solid var(--border); font-size: 16px;
}
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }
.modal-btn {
  padding: 10px 16px; min-height: 44px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); cursor: pointer; font-size: 0.9rem; touch-action: manipulation;
}
.modal-btn.danger { background: var(--accent); color: #fff; border-color: var(--accent); }

.hidden { display: none !important; }

main {
  flex: 1 1 auto;
  min-height: 0;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.screen { flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; overflow-y: auto; }

#appScreen { overflow-y: hidden; }

#categoriesView, #exercisesView, #historyView, #aboutView {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
}

.back-btn {
  flex-shrink: 0;
  align-self: flex-start;
  background: none; border: none; color: var(--accent);
  font-size: 0.9rem; font-weight: 600; cursor: pointer; padding: 8px 0 12px;
  touch-action: manipulation;
}

.view-title {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 4px 0 4px;
  font-size: 1.4rem;
}
.view-subtitle { color: var(--muted); margin: 0 0 16px; font-size: 0.92rem; }

.auth-card {
  max-width: 380px;
  margin: 40px auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
}

.auth-tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab-btn {
  flex: 1; padding: 10px 8px; min-height: 44px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); cursor: pointer; font-size: 0.95rem; touch-action: manipulation;
}
.tab-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.auth-form { display: flex; flex-direction: column; gap: 12px; }
.auth-form label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--muted); }
.auth-form input, textarea {
  padding: 10px; border-radius: 8px; border: 1px solid var(--border); font-size: 16px;
  min-height: 44px;
}
.auth-form button[type="submit"] {
  flex-shrink: 0;
  border-radius: 8px; border: none; background: var(--accent);
  color: #fff; cursor: pointer; margin-top: 4px; touch-action: manipulation;
  width: 100%; padding: 12px; min-height: 46px; font-size: 1rem;
}
.auth-form button[type="submit"]:hover { opacity: 0.92; }
.auth-form .link-btn { align-self: flex-start; }

.form-error { flex-shrink: 0; color: #c0392b; font-size: 0.85rem; min-height: 1em; margin: 6px 0 0; }
.form-success { flex-shrink: 0; color: #2e7d32; font-size: 0.85rem; min-height: 1em; margin: 6px 0 0; }

.divider { display: flex; align-items: center; gap: 10px; margin: 18px 0 12px; color: var(--muted); font-size: 0.8rem; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }

#googleBtn { display: flex; justify-content: center; }
.hint { font-size: 0.75rem; color: var(--muted); text-align: center; margin-top: 8px; }

/* ---------- Categories ---------- */
.categories-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.category-card {
  --cat-color: #888;
  position: relative;
  text-align: left;
  background: var(--card);
  border: 1px solid var(--border);
  border-top: 4px solid var(--cat-color);
  border-radius: 12px;
  padding: 20px 18px 44px;
  cursor: pointer;
  font: inherit;
  color: var(--ink);
  touch-action: manipulation;
  min-height: 120px;
}
.category-card:hover { box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08); }
.category-card h3 {
  margin: 0 0 6px;
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 1.1rem;
}
.category-card p { margin: 0; color: var(--muted); font-size: 0.85rem; line-height: 1.4; }
.category-card .card-arrow {
  position: absolute; right: 16px; bottom: 14px;
  color: var(--cat-color); font-size: 1.3rem; font-weight: 700;
}

/* ---------- Exercises ---------- */
.exercises-list { display: flex; flex-direction: column; gap: 12px; }
.exercise-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px;
  display: flex; gap: 14px; align-items: flex-start;
}
.exercise-media {
  flex: 0 0 84px; width: 84px; height: 100px; border-radius: 10px; background: var(--bg);
  display: flex; align-items: center; justify-content: center; color: var(--ink); overflow: hidden;
}
.exercise-figure-svg { width: 100%; height: 100%; }
.exercise-body { flex: 1 1 auto; min-width: 0; }
.exercise-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.exercise-head h3 { margin: 0; font-size: 1.02rem; }
.video-link { font-size: 0.82rem; color: var(--accent); text-decoration: none; font-weight: 600; white-space: nowrap; }
.video-link:hover { text-decoration: underline; }
.exercise-description { margin: 6px 0 0; font-size: 0.85rem; color: var(--muted); line-height: 1.45; }

.exercise-targets { display: flex; gap: 16px; margin: 10px 0; }
.exercise-targets label {
  display: flex; flex-direction: column; gap: 4px; font-size: 0.78rem; color: var(--muted);
  flex: 1 1 0;
}
.exercise-targets input {
  padding: 8px; border-radius: 8px; border: 1px solid var(--border); font-size: 16px; width: 100%;
}

.exercise-progress { display: flex; align-items: center; gap: 10px; margin: 8px 0 12px; }
.progress-bar { flex: 1 1 auto; height: 8px; border-radius: 999px; background: var(--bg); overflow: hidden; }
.progress-fill { height: 100%; width: 0%; background: var(--accent); border-radius: 999px; transition: width 0.2s ease; }
.progress-label { flex-shrink: 0; font-size: 0.8rem; color: var(--muted); white-space: nowrap; }

.exercise-actions { display: flex; gap: 8px; }
.log-set-btn {
  flex: 1 1 auto; padding: 12px; min-height: 46px; border-radius: 8px; border: none;
  background: var(--ink); color: #fff; font-weight: 700; font-size: 0.95rem; cursor: pointer;
  touch-action: manipulation; text-transform: uppercase; letter-spacing: 0.02em;
}
.log-set-btn:hover { opacity: 0.9; }
.log-set-btn:active { transform: scale(0.98); }
.log-set-btn:disabled { opacity: 0.6; cursor: default; }

.undo-set-btn {
  flex: 0 0 auto; padding: 12px 16px; min-height: 46px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--card); color: var(--muted);
  font-weight: 600; font-size: 0.85rem; cursor: pointer; touch-action: manipulation;
  white-space: nowrap;
}
.undo-set-btn:hover:not(:disabled) { color: #c0392b; border-color: #c0392b; }
.undo-set-btn:disabled { opacity: 0.4; cursor: default; }
.exercise-error { margin: 6px 0 0; }

/* ---------- History ---------- */
.history-panel { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 20px; }

.date-range-picker { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 16px; }
.date-range-picker label { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: var(--muted); }
.date-range-picker input[type="date"], .date-range-picker select {
  padding: 6px 8px; border-radius: 6px; border: 1px solid var(--border); font-size: 0.85rem;
  font-family: inherit; background: var(--bg); color: var(--ink);
}
.date-range-picker .link-btn { font-size: 0.8rem; padding: 0; }

.history-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.date-range-picker + .history-header { margin-top: 16px; }
.history-header h2 { margin: 0; font-size: 1rem; }
#categoryCountChart { margin-top: 8px; }

.load-more-btn {
  display: block; width: 100%; margin-top: 12px; padding: 10px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg); color: var(--ink);
  font-size: 0.85rem; cursor: pointer; touch-action: manipulation;
}
.load-more-btn:hover { background: var(--border); }

.about-panel {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 20px; text-align: left;
}
.about-panel h2 { margin: 0 0 12px; font-size: 1.2rem; }
.about-panel h3 { font-size: 1rem; margin: 20px 0 8px; }
.about-panel p { color: var(--ink); line-height: 1.5; margin: 0 0 12px; font-size: 0.92rem; }
.about-panel ul, .about-panel ol { margin: 0 0 12px; padding-left: 20px; color: var(--ink); font-size: 0.92rem; line-height: 1.6; }
.about-panel li { margin-bottom: 4px; }

.entry-list { list-style: none; margin: 16px 0 0; padding: 0; max-height: 340px; overflow-y: auto; }
.entry-list li {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; padding: 10px 0;
  border-bottom: 1px solid var(--border); font-size: 0.85rem;
}
.entry-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; flex: 1 1 auto; }
.entry-list .entry-emotions { font-weight: 600; }
.entry-list .entry-meta { color: var(--muted); }
.entry-actions { flex-shrink: 0; display: flex; gap: 2px; }
.entry-delete-btn {
  flex-shrink: 0; background: none; border: none; color: var(--muted); cursor: pointer;
  font-size: 1.2rem; line-height: 1; padding: 6px 8px; touch-action: manipulation;
}
.entry-delete-btn:hover { color: #c0392b; }

#historyChart { max-width: 100%; }

@media (max-width: 600px) {
  .topbar { padding: 6px 12px; padding-top: calc(6px + env(safe-area-inset-top, 0px)); }
  .topbar h1 { font-size: 1rem; }
  .user-box { gap: 8px; }
  #userEmail { max-width: 26vw; }
  main { padding: 6px 10px; }
  .auth-card { margin: 20px auto; padding: 18px; }
  .history-panel, .about-panel { padding: 14px; border-radius: 12px; }
  .history-header { justify-content: flex-start; }
  .categories-cards { grid-template-columns: 1fr; }
  .exercise-targets { gap: 10px; }
  .exercise-actions { flex-direction: column; }
  .undo-set-btn { width: 100%; }
  .exercise-media { flex-basis: 64px; width: 64px; height: 76px; }
}

@media (max-width: 380px) {
  .exercise-card { flex-direction: column; }
  .exercise-media { width: 84px; height: 100px; align-self: flex-start; }
}