:root {
  --pink: #ff2d78;
  --orange: #ff8a00;
  --yellow: #ffd400;
  --green: #2ee59d;
  --blue: #2d8cff;
  --purple: #a259ff;
  --dark: #1b1b2f;
  --bg: #fff7f0;
  --card: #ffffff;
  --radius: 20px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Trebuchet MS", system-ui, sans-serif;
  background: var(--bg);
  color: var(--dark);
  font-size: 22px;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 16px 100px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 16px;
  background: var(--dark);
  color: white;
}

.topbar a { color: white; text-decoration: none; font-weight: 800; }

.brand-link { display: block; }

.brand {
  font-size: 30px;
  font-weight: 900;
  letter-spacing: -0.5px;
}

.brand span { color: var(--yellow); }

.tagline {
  font-size: 14px;
  font-weight: 600;
  font-style: italic;
  opacity: 0.75;
  margin-top: 2px;
}

nav.tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 16px 0;
}

nav.tabs a {
  flex: 0 0 auto;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--card);
  color: var(--dark);
  text-decoration: none;
  font-weight: 800;
  font-size: 18px;
  border: 3px solid var(--dark);
}

nav.tabs a.active { background: var(--yellow); }

h1 { font-size: 34px; font-weight: 900; letter-spacing: -0.5px; }
h2 { font-size: 28px; font-weight: 900; letter-spacing: -0.5px; }
h3 { font-size: 22px; font-weight: 900; letter-spacing: -0.5px; }

.stats-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 16px 0;
}

.stat {
  flex: 1 1 140px;
  background: var(--card);
  border: 3px solid var(--dark);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.stat .big { font-size: 40px; font-weight: 900; }
.stat .big .unit { font-size: 16px; font-weight: 700; }

.category-block {
  margin: 24px 0;
}

.category-title {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  color: white;
  font-weight: 900;
  margin-bottom: 12px;
}

.task-card {
  background: var(--card);
  border: 3px solid var(--dark);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: 6px 6px 0 var(--dark);
}

.task-card h3 { margin: 0 0 6px; }

.task-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  flex-wrap: wrap;
  gap: 10px;
}

.points-pill {
  background: var(--green);
  border: 3px solid var(--dark);
  border-radius: 999px;
  padding: 6px 16px;
  font-weight: 900;
  font-size: 18px;
}

.timer-pill {
  background: var(--orange);
  color: white;
  border-radius: 999px;
  padding: 6px 16px;
  font-weight: 800;
  font-size: 17px;
}

.timer-pill.urgent { background: var(--pink); }

button, .btn {
  font-size: 22px;
  font-weight: 900;
  padding: 14px 26px;
  border-radius: 999px;
  border: 3px solid var(--dark);
  background: var(--yellow);
  color: var(--dark);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

button:hover, .btn:hover { transform: translateY(-2px); }

.btn-blue { background: var(--blue); color: white; }
.btn-pink { background: var(--pink); color: white; }
.btn-green { background: var(--green); }
.btn-purple { background: var(--purple); color: white; }

form.inline { display: inline; }

input[type=text], input[type=password], input[type=number], select {
  font-size: 22px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 3px solid var(--dark);
  width: 100%;
  margin-bottom: 12px;
}

.card {
  background: var(--card);
  border: 3px solid var(--dark);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.login-wrap {
  max-width: 380px;
  margin: 60px auto;
  padding: 0 16px;
  text-align: center;
}

.streak-badge {
  background: var(--purple);
  color: white;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 900;
  font-size: 20px;
  display: inline-block;
}

.feedback-correct {
  background: var(--green);
  border: 3px solid var(--dark);
  border-radius: var(--radius);
  padding: 16px;
  font-weight: 900;
  font-size: 22px;
  text-align: center;
  margin-bottom: 16px;
}

.feedback-wrong {
  background: var(--pink);
  color: white;
  border: 3px solid var(--dark);
  border-radius: var(--radius);
  padding: 16px;
  font-weight: 900;
  font-size: 22px;
  text-align: center;
  margin-bottom: 16px;
}

.progress-bar {
  height: 20px;
  border-radius: 999px;
  background: #eee;
  border: 3px solid var(--dark);
  overflow: hidden;
  margin-bottom: 20px;
}

.progress-fill {
  height: 100%;
  background: var(--blue);
}

table { width: 100%; border-collapse: collapse; font-size: 20px; }
th, td { text-align: left; padding: 10px; border-bottom: 2px solid #eee; }

.leaderboard-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card);
  border: 3px solid var(--dark);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

.leaderboard-row.me { background: var(--yellow); }

.lb-card {
  background: var(--card);
  border: 3px solid var(--dark);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 6px 6px 0 var(--dark);
}

.lb-card.me { background: var(--yellow); }

.lb-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.lb-rank { font-size: 34px; line-height: 1; }

.lb-name {
  flex: 1;
  font-size: 22px;
  font-weight: 900;
}

.lb-streak {
  font-size: 18px;
  font-weight: 700;
  margin-top: 2px;
}

.lb-points {
  font-size: 24px;
  font-weight: 900;
  text-align: right;
}

.lb-bar-track {
  background: #eee;
  border: 3px solid var(--dark);
  border-radius: 999px;
  height: 34px;
  overflow: hidden;
}

.lb-bar-fill {
  height: 100%;
  min-width: 46px;
  display: flex;
  align-items: center;
  padding-left: 14px;
  transition: width 0.4s ease;
}

.lb-bar-label {
  color: white;
  font-weight: 900;
  font-size: 16px;
  white-space: nowrap;
  text-shadow: 0 1px 2px rgba(0,0,0,0.4);
}

.result-pass {
  background: var(--green);
  border: 3px solid var(--dark);
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
  font-size: 30px;
  font-weight: 900;
}

.result-fail {
  background: var(--orange);
  color: white;
  border: 3px solid var(--dark);
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
  font-size: 30px;
  font-weight: 900;
}

.error-box {
  background: var(--pink);
  color: white;
  padding: 12px 16px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 18px;
  margin-bottom: 16px;
}

.muted { color: #666; font-size: 17px; font-weight: normal; }

.calendar-strip {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 2px 10px;
}

.cal-day {
  flex: 0 0 56px;
  background: var(--bg);
  border: 3px solid var(--dark);
  border-radius: 14px;
  padding: 8px 4px;
  text-align: center;
}

.cal-day.today { background: var(--yellow); }
.cal-day.inactive-day { opacity: 0.35; }

.cal-date { font-size: 13px; font-weight: 800; line-height: 1.2; }
.cal-icon { font-size: 24px; margin-top: 4px; }

.quiz-stamp {
  flex: 0 0 auto;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  border: 4px solid var(--purple);
  color: var(--purple);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: Impact, "Arial Narrow Bold", "Arial Black", sans-serif;
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.5px;
  transform: rotate(-10deg);
  opacity: 0.85;
  text-align: center;
}