:root {
  color-scheme: light;
  --ink: #2c2722;
  --muted: #756d62;
  --paper: #f7f2ea;
  --panel: #fdfaf4;
  --line: #e4dccd;
  --accent: #5c4530;
  --good: #2f6b3a;
  --bad: #9a3b2f;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

main {
  width: min(640px, 92vw);
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

h1 {
  font-size: 1.4rem;
  margin: 0;
}

button {
  font: inherit;
  padding: 0.5rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
}

button:disabled {
  opacity: 0.6;
  cursor: default;
}

input,
select,
textarea {
  font: inherit;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  padding: 0.5rem 0.6rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.9rem;
  color: var(--muted);
}

/* --- Login --- */

.jp-auth {
  max-width: 22rem;
}

.jp-login {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.jp-login button {
  align-self: flex-start;
}

.jp-error {
  margin: 0;
  color: var(--bad);
}

/* --- Practice --- */

.jp-practice-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.jp-account {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.jp-user {
  color: var(--muted);
  font-size: 0.9rem;
}

.jp-controls {
  margin: 1.5rem 0 1rem;
}

.jp-controls label {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
}

.jp-prompt {
  font-size: 1.25rem;
  min-height: 2.5rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
}

.jp-answer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.jp-answer textarea {
  width: 100%;
  resize: vertical;
  font-size: 1.1rem;
}

/* Single multifunction action button, comfortable to tap on any screen. */
.jp-answer button {
  align-self: flex-start;
  min-width: 9rem;
  padding: 0.6rem 1.25rem;
}

/* --- Result --- */

.jp-target {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.jp-reading {
  color: var(--muted);
  font-size: 0.9rem;
}

.jp-grading {
  margin: 0;
  color: var(--muted);
  font-style: italic;
}

.jp-result {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left-width: 4px;
  border-radius: 0.5rem;
}

.jp-result[data-pass="true"] {
  border-left-color: var(--good);
}

.jp-result[data-pass="false"] {
  border-left-color: var(--bad);
}

.jp-verdict {
  margin: 0 0 0.75rem;
  font-weight: 600;
}

.jp-result[data-pass="true"] .jp-verdict {
  color: var(--good);
}

.jp-result[data-pass="false"] .jp-verdict {
  color: var(--bad);
}

.jp-scores {
  list-style: none;
  margin: 0 0 0.75rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr));
  gap: 0.5rem;
}

.jp-scores li {
  display: flex;
  flex-direction: column;
}

.jp-score-label {
  color: var(--muted);
  font-size: 0.8rem;
}

.jp-score-value {
  font-size: 1.1rem;
}

.jp-feedback-text {
  margin: 0.75rem 0;
}

.jp-corrected {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin: 0.75rem 0 0;
  font-size: 1.1rem;
}

/* --- Shared link-styled button --- */

.jp-button {
  display: inline-block;
  font: inherit;
  padding: 0.5rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: var(--panel);
  color: var(--ink);
  text-decoration: none;
}

.jp-button:hover {
  border-color: var(--accent);
}

/* --- History --- */

.jp-empty {
  margin-top: 2rem;
  color: var(--muted);
}

.jp-history-summary {
  margin: 1.5rem 0 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.jp-history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.jp-attempt {
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left-width: 4px;
  border-radius: 0.5rem;
}

.jp-attempt[data-pass="true"] {
  border-left-color: var(--good);
}

.jp-attempt[data-pass="false"] {
  border-left-color: var(--bad);
}

.jp-attempt-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--muted);
}

.jp-attempt-overall {
  margin-left: auto;
  font-size: 1.1rem;
  color: var(--ink);
}

.jp-attempt[data-pass="true"] .jp-attempt-verdict {
  color: var(--good);
}

.jp-attempt[data-pass="false"] .jp-attempt-verdict {
  color: var(--bad);
}

.jp-attempt-prompt {
  margin: 0.5rem 0 0.75rem;
  font-size: 1.1rem;
}

.jp-attempt-answer {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

/* --- Grade actions + follow-up chat --- */

.jp-grade-actions {
  margin-top: 1rem;
}

.jp-copy {
  font-size: 0.85rem;
  padding: 0.35rem 0.7rem;
}

.jp-follow {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.jp-follow-log {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
}

.jp-follow-turn {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin: 0;
}

.jp-follow-turn[data-who="you"] .jp-follow-text {
  color: var(--muted);
}

.jp-follow-text {
  white-space: pre-wrap;
}

.jp-follow-form {
  display: flex;
  gap: 0.5rem;
}

.jp-follow-input {
  flex: 1 1 auto;
}