* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #faf8f5;
  --text: #2c2c2c;
  --text-muted: #888;
  --border: #e8e4df;
  --card-bg: #fff;
  --radius: 12px;
  --accent: #7eb8a8;
  --score-neg2: #e57373;
  --score-neg1: #ffcc80;
  --score-zero: #a5d6a7;
  --score-pos1: #ffcc80;
  --score-pos2: #e57373;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
}

#app {
  max-width: 480px;
  margin: 0 auto;
  padding: 16px;
}

/* Login */
.login-card {
  text-align: center;
  padding: 60px 24px;
}

.login-card h1 {
  font-size: 28px;
  margin-bottom: 4px;
}

.login-card .subtitle {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 15px;
}

#login-form {
  display: flex;
  gap: 8px;
}

#login-form input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 16px;
  background: var(--card-bg);
}

#login-form button {
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius);
  background: var(--text);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}

.error {
  color: #d44;
  font-size: 14px;
  margin-top: 12px;
}

/* Header */
header {
  text-align: center;
  padding: 8px 0 12px;
}

header h1 {
  font-size: 22px;
}

/* Month navigation */
.month-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}

.month-nav span {
  font-size: 17px;
  font-weight: 600;
  min-width: 160px;
  text-align: center;
}

.nav-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
}

/* Calendar */
.calendar {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  margin-bottom: 12px;
}

.calendar-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.day-cell {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  position: relative;
  border: 2px solid transparent;
}

.day-cell.empty {
  cursor: default;
}

.day-cell.today {
  border-color: var(--text);
}

.day-cell.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.day-cell .day-num {
  font-weight: 600;
  font-size: 13px;
}

.day-cell .day-score {
  font-size: 10px;
  font-weight: 700;
  margin-top: 1px;
}

.day-cell.outside {
  color: var(--border);
}

/* Legend */
.legend {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  font-size: 11px;
  color: var(--text-muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 3px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

/* Entry panel */
.entry-panel {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  border-top: 4px solid var(--accent);
}

.entry-panel h3 {
  font-size: 15px;
  margin-bottom: 12px;
  text-align: center;
}

.score-buttons {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.score-btn {
  flex: 1;
  padding: 12px 0;
  border: 2px solid var(--border);
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  background: var(--card-bg);
  transition: all 0.15s ease;
}

.score-btn.active {
  border-color: transparent;
  color: #fff;
  transform: scale(1.05);
}

.score-btn.score-neg2 { color: var(--score-neg2); }
.score-btn.score-neg1 { color: var(--score-neg1); }
.score-btn.score-zero { color: var(--score-zero); }
.score-btn.score-pos1 { color: var(--score-pos1); }
.score-btn.score-pos2 { color: var(--score-pos2); }

.score-btn.active.score-neg2 { background: var(--score-neg2); color: #fff; }
.score-btn.active.score-neg1 { background: var(--score-neg1); color: #fff; }
.score-btn.active.score-zero { background: var(--score-zero); color: #fff; }
.score-btn.active.score-pos1 { background: var(--score-pos1); color: #fff; }
.score-btn.active.score-pos2 { background: var(--score-pos2); color: #fff; }

.entry-panel textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  background: var(--bg);
  margin-bottom: 10px;
}

.entry-panel textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.entry-actions {
  display: flex;
  gap: 8px;
}

.entry-actions .save-btn {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

.entry-actions .delete-btn {
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  color: #d44;
  font-size: 14px;
  cursor: pointer;
}