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

:root {
  --bg: #fdf6f9;
  --panel: #ffffff;
  --ink: #4a3b42;
  --sub: #9b7f8c;
  --accent: #ff7fae;
  --accent-dark: #e05a8f;
  --line: #f0dde6;
}

body {
  font-family: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

.site-header {
  padding: 28px 24px 12px;
  text-align: center;
}
.site-header h1 {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent-dark);
  letter-spacing: 0.05em;
}
.beta {
  font-size: 0.8rem;
  vertical-align: super;
  color: var(--sub);
  margin-left: 4px;
}
.tagline { color: var(--sub); font-size: 0.9rem; }

.layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 20px;
  max-width: 1280px;
  margin: 16px auto;
  padding: 0 16px;
}
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .preview { order: -1; }
}

fieldset {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 14px;
}
legend {
  font-weight: 700;
  color: var(--accent-dark);
  padding: 0 6px;
  font-size: 0.95rem;
}

label { display: block; font-size: 0.85rem; margin: 8px 0; }
input[type="text"], input[type="date"], input[type="time"] {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  background: #fff;
  color: var(--ink);
}
input[type="range"] { width: 100%; accent-color: var(--accent); }
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.template-picker { display: flex; gap: 10px; flex-wrap: wrap; }
.template-chip {
  border: 2px solid transparent;
  border-radius: 10px;
  padding: 6px 12px 4px;
  cursor: pointer;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  background: #fff;
  color: var(--ink);
  font-family: inherit;
}
.template-chip .swatch {
  display: block;
  width: 64px;
  height: 36px;
  border-radius: 6px;
  margin-bottom: 4px;
}
.template-chip.selected { border-color: var(--accent-dark); background: #fff0f6; }

.day-row {
  display: grid;
  grid-template-columns: 74px 96px 1fr 30px;
  gap: 6px;
  align-items: center;
  margin-bottom: 6px;
}
.day-row .day-label { font-weight: 700; font-size: 0.85rem; }
.day-row .day-label.sun { color: #e05a5a; }
.day-row .day-label.sat { color: #4a7fd4; }
.day-row input[type="time"] { padding: 6px 4px; font-size: 0.85rem; }
.day-row input[type="text"] { padding: 6px 8px; font-size: 0.85rem; }
.day-row.is-off input[type="time"], .day-row.is-off input[type="text"] { opacity: 0.4; }
.day-off-toggle { text-align: center; }
.day-off-toggle input { accent-color: var(--accent); }

.check-label { display: flex; align-items: center; gap: 6px; }
.file-label {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  font-weight: 700;
}
.file-label input { display: none; }

.btn-main {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px 22px;
  font-size: 1rem;
  font-weight: 900;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.05s, background 0.15s;
}
.btn-main:hover { background: var(--accent-dark); }
.btn-main:active { transform: scale(0.97); }
.btn-alt { background: #7fb8ff; }
.btn-alt:hover { background: #5a93e0; }
.btn-sub {
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 12px;
  font-family: inherit;
  font-size: 0.8rem;
  color: var(--sub);
  cursor: pointer;
  margin-top: 6px;
}
.btn-sub:hover { border-color: var(--sub); }

.preview { position: sticky; top: 12px; align-self: start; }
#canvas {
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 6px 24px rgba(180, 120, 150, 0.25);
  background: #fff;
}
.actions { display: flex; gap: 10px; margin: 12px 0; }
.tweet-details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
}
.tweet-details summary {
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--sub);
}
.tweet-details pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--ink);
  margin-top: 8px;
}
.note { font-size: 0.75rem; color: var(--sub); margin-top: 4px; }

.site-footer {
  text-align: center;
  color: var(--sub);
  font-size: 0.75rem;
  padding: 24px;
}