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

:root {
  --green: #2e7d32;
  --green-light: #e8f3e9;
  --ink: #1f2a1f;
  --muted: #6b7a6b;
  --line: #dde5dd;
  --bg: #f6f8f5;
  --card: #ffffff;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

header {
  background: var(--green);
  color: #fff;
  padding: 1.2rem 1rem 1rem;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 0 1rem; }

header h1 { font-size: 1.4rem; font-weight: 700; }
header p { opacity: 0.85; font-size: 0.9rem; margin-top: 0.15rem; }

nav { margin-top: 0.8rem; display: flex; gap: 0.5rem; }
nav a {
  color: #fff; text-decoration: none; font-size: 0.9rem; font-weight: 600;
  padding: 0.35rem 0.9rem; border-radius: 999px; background: rgba(255,255,255,0.15);
}
nav a.active { background: #fff; color: var(--green); }

main { padding: 1.2rem 0 3rem; }

.progress-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 1rem 1.2rem; margin-bottom: 1.2rem;
}
.progress-card .label {
  display: flex; justify-content: space-between; font-size: 0.85rem;
  color: var(--muted); margin-bottom: 0.4rem; font-weight: 600;
}
.bar { height: 10px; background: var(--green-light); border-radius: 999px; overflow: hidden; }
.bar > div { height: 100%; background: var(--green); border-radius: 999px; transition: width 0.3s; }

h2.phase {
  font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--muted); margin: 1.4rem 0 0.5rem;
}

.task {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 0.8rem 1rem; margin-bottom: 0.5rem;
  display: flex; gap: 0.8rem; align-items: flex-start;
}
.task input[type="checkbox"] {
  width: 1.25rem; height: 1.25rem; margin-top: 0.15rem;
  accent-color: var(--green); cursor: pointer; flex-shrink: 0;
}
.task .title { font-weight: 600; cursor: pointer; }
.task .detail { font-size: 0.87rem; color: var(--muted); margin-top: 0.15rem; }
.task .done-date { font-size: 0.78rem; color: var(--green); font-weight: 600; margin-top: 0.2rem; }
.task.done { background: var(--green-light); }
.task.done .title { text-decoration: line-through; color: var(--muted); }

section.log { margin-top: 2rem; }
section.log h2 { font-size: 1.1rem; margin-bottom: 0.6rem; }
.log-form { display: flex; gap: 0.5rem; margin-bottom: 0.8rem; flex-wrap: wrap; }
.log-form input[type="date"] {
  padding: 0.55rem 0.6rem; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: var(--card);
}
.log-form input[type="text"] {
  flex: 1; min-width: 200px; padding: 0.55rem 0.8rem;
  border: 1px solid var(--line); border-radius: 8px; font: inherit; background: var(--card);
}
.log-form button {
  padding: 0.55rem 1.2rem; border: 0; border-radius: 8px; font: inherit;
  font-weight: 600; background: var(--green); color: #fff; cursor: pointer;
}
.log-form button:hover { background: #256428; }

.log-entry {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 0.55rem 0.9rem; margin-bottom: 0.4rem;
  display: flex; gap: 0.8rem; align-items: baseline;
}
.log-entry .date { font-size: 0.8rem; color: var(--muted); white-space: nowrap; font-weight: 600; }
.log-entry .note { flex: 1; font-size: 0.92rem; }
.log-entry button {
  border: 0; background: none; color: #b55; cursor: pointer; font-size: 1rem; line-height: 1;
}
.empty { color: var(--muted); font-size: 0.9rem; font-style: italic; }