:root {
  --navy: #0b2545; --sea: #13a4a4; --sand: #f4efe6; --coral: #ff6b57;
  --water: #bfe3e3; --land: #e6dcc7;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--navy); color: var(--navy);
  font: 16px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 520px; margin: 0 auto; padding: 12px; }
header { color: var(--sand); padding: 4px 2px 12px; }
header h1 { margin: 0; font-size: 22px; letter-spacing: .02em; }
header p { margin: 4px 0 0; font-size: 13px; opacity: .85; }
.card { background: var(--sand); border-radius: 14px; padding: 12px; }
svg.chart { display: block; width: 100%; height: auto; border-radius: 10px; background: var(--water); }

.legend { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 10px 0 2px; font-size: 15px; }
.legend b { font-weight: 600; }
.dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--navy); vertical-align: -1px; margin-right: 5px; }
.dot.from { background: var(--coral); }
.dot.to { background: var(--sea); }
.status { font-size: 13px; opacity: .7; margin: 2px 0 0; }

.rose { display: block; margin: 6px auto 0; width: 230px; max-width: 62vw; touch-action: none; cursor: grab; }
.entry { display: flex; gap: 8px; align-items: center; justify-content: center; margin-top: 8px; }
.entry input {
  width: 5.2em; min-height: 48px; font-size: 26px; text-align: center; font-variant-numeric: tabular-nums;
  border: 2px solid var(--navy); border-radius: 10px; background: #fff; color: var(--navy);
}
.entry span { font-size: 20px; font-weight: 600; }

button {
  min-height: 48px; width: 100%; margin-top: 10px; padding: 0 16px; font-size: 17px; font-weight: 600;
  border: 0; border-radius: 10px; background: var(--navy); color: var(--sand); cursor: pointer;
}
button.alt { background: var(--sea); }
button:disabled { opacity: .45; cursor: default; }

.feedback { margin-top: 10px; padding: 10px; border-radius: 10px; background: #fff; font-size: 15px; }
.feedback b { font-size: 19px; }
.grid { font-size: 30px; letter-spacing: 3px; margin: 6px 0; }
.total { font-size: 34px; font-weight: 700; margin: 2px 0; }
textarea { width: 100%; min-height: 90px; margin-top: 8px; font: 14px monospace; border: 2px solid var(--navy); border-radius: 8px; }
.hidden { display: none; }
footer { color: var(--sand); font-size: 12px; opacity: .8; padding: 12px 2px; text-align: center; }
footer a { color: var(--sand); }