:root {
  color-scheme: light;
  --ink: #17231f;
  --muted: #6f7874;
  --green: #315f51;
  --green-dark: #23483e;
  --line: rgba(23, 35, 31, 0.1);
  --surface: rgba(255, 255, 255, 0.82);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Hiragino Sans", "Yu Gothic UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { min-height: 100%; background: #f5f5f3; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 0%, rgba(217, 231, 224, 0.58), transparent 32rem),
    radial-gradient(circle at 96% 12%, rgba(248, 234, 213, 0.52), transparent 30rem),
    linear-gradient(180deg, #f8f7f3 0%, #f2f3f2 100%);
}

button, textarea { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell { min-height: 100vh; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  padding: env(safe-area-inset-top) max(24px, env(safe-area-inset-right)) 0 max(24px, env(safe-area-inset-left));
  border-bottom: 1px solid rgba(23, 35, 31, 0.07);
  background: rgba(248, 248, 246, 0.72);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark { display: grid; width: 28px; height: 28px; place-items: center; color: var(--green); }
.brand-mark svg { width: 100%; height: 100%; }
.brand-name { font-size: 17px; font-weight: 650; letter-spacing: 0.04em; }
.app-version { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: 0.08em; }

.main-content {
  width: min(720px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(48px, 8vw, 88px) 0 96px;
}

.compose-card,
.recalled-card {
  border: 1px solid rgba(23, 35, 31, 0.09);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: 0 22px 70px rgba(26, 38, 33, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(28px) saturate(130%);
  -webkit-backdrop-filter: blur(28px) saturate(130%);
}

.compose-card { padding: clamp(22px, 4vw, 34px); }

#memory-input {
  display: block;
  width: 100%;
  min-height: 190px;
  resize: vertical;
  padding: 4px 2px;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(21px, 3.2vw, 27px);
  line-height: 1.75;
  letter-spacing: 0.025em;
}

#memory-input::placeholder { color: #aab0ad; opacity: 1; }

.compose-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.character-count { color: #999f9c; font-size: 12px; font-variant-numeric: tabular-nums; }

.primary-button,
.secondary-button,
.recall-button {
  border: 0;
  cursor: pointer;
  transition: transform 160ms ease, background-color 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.primary-button {
  min-width: 112px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  color: #fff;
  background: var(--green);
  font-weight: 650;
}

.primary-button:hover { background: var(--green-dark); transform: translateY(-1px); }
.primary-button:disabled { cursor: wait; opacity: 0.62; }

.recall-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 78px;
  margin-top: 22px;
  padding: 0 28px 0 32px;
  border-radius: 24px;
  color: #fff;
  background: var(--ink);
  box-shadow: 0 18px 40px rgba(23, 35, 31, 0.15);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 23px;
  letter-spacing: 0.08em;
}

.recall-button:hover:not(:disabled) { background: #26342f; transform: translateY(-1px); }
.recall-button:disabled { cursor: default; opacity: 0.3; box-shadow: none; }
.button-arrow { font-family: -apple-system, BlinkMacSystemFont, sans-serif; font-size: 20px; }

.recalled-card {
  margin-top: 22px;
  padding: clamp(28px, 5vw, 42px);
  opacity: 0;
  transform: translateY(8px);
}

.recalled-card.is-visible { opacity: 1; transform: translateY(0); transition: opacity 260ms ease, transform 260ms ease; }

.recalled-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.recalled-meta time { color: var(--muted); font-size: 13px; }
.recalled-text {
  margin: 0 0 34px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.72;
  letter-spacing: 0.025em;
}

.secondary-button {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  font-weight: 600;
}

.secondary-button:hover { background: #fff; transform: translateY(-1px); }
.recalled-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.form-error { margin: 14px 2px 0; color: #a24b3f; font-size: 13px; }

.memory-actions {
  display: flex;
  justify-content: center;
  padding-top: 28px;
}

.delete-all-button {
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  color: #a0443c;
  background: transparent;
  cursor: pointer;
  font-size: 13px;
}

.delete-all-button:hover { color: #7f302a; }

.delete-dialog,
.edit-dialog {
  width: min(420px, calc(100% - 32px));
  padding: 0;
  border: 1px solid rgba(23, 35, 31, 0.1);
  border-radius: 22px;
  color: var(--ink);
  background: rgba(252, 252, 250, 0.96);
  box-shadow: 0 28px 90px rgba(23, 35, 31, 0.22);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
}

.delete-dialog::backdrop,
.edit-dialog::backdrop { background: rgba(23, 29, 27, 0.3); backdrop-filter: blur(4px); }
.delete-dialog form,
.edit-dialog form { padding: 26px 26px 20px; }
.delete-dialog h2,
.edit-dialog h2 { margin: 0; font-size: 19px; letter-spacing: 0.01em; }
.delete-dialog p { margin: 10px 0 24px; color: var(--muted); font-size: 14px; line-height: 1.6; }

#edit-memory-input {
  display: block;
  width: 100%;
  min-height: 180px;
  margin-top: 20px;
  resize: vertical;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  outline: 0;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 18px;
  line-height: 1.7;
}

#edit-memory-input:focus { border-color: rgba(49, 95, 81, 0.5); box-shadow: 0 0 0 4px rgba(49, 95, 81, 0.1); }
.edit-tools { display: flex; justify-content: flex-end; margin-top: 8px; }
.partial-delete-button {
  min-height: 44px;
  padding: 0 12px;
  border: 0;
  border-radius: 12px;
  color: #8f3f36;
  background: transparent;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 650;
}
.partial-delete-button:hover:not(:disabled) { background: rgba(177, 71, 62, 0.08); }
.partial-delete-button:focus-visible { outline: 3px solid rgba(49, 95, 81, 0.18); outline-offset: 2px; }
.partial-delete-button:disabled { color: var(--muted); cursor: not-allowed; opacity: 0.45; }
.edit-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 16px; }
.edit-footer .dialog-actions { display: flex; }
.edit-footer .dialog-button { min-width: 100px; padding: 0 16px; }

.dialog-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.dialog-button {
  min-height: 46px;
  border: 0;
  border-radius: 14px;
  color: var(--ink);
  background: #eceeec;
  cursor: pointer;
  font-weight: 650;
}

.dialog-button.destructive { color: #fff; background: #b1473e; }
.dialog-button.primary { color: #fff; background: var(--green); }
.dialog-button:hover { filter: brightness(0.97); }

.toast {
  position: fixed;
  left: 50%;
  bottom: max(28px, env(safe-area-inset-bottom));
  z-index: 10;
  padding: 12px 18px;
  border-radius: 999px;
  color: #fff;
  background: rgba(23, 35, 31, 0.9);
  box-shadow: 0 10px 30px rgba(23, 35, 31, 0.18);
  opacity: 0;
  transform: translate(-50%, 8px);
  transition: opacity 180ms ease, transform 180ms ease;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  font-size: 14px;
}

.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 560px) {
  .topbar { height: 64px; padding-left: 18px; padding-right: 18px; }
  .main-content { width: calc(100% - 24px); padding-top: 30px; padding-bottom: 64px; }
  .compose-card, .recalled-card { border-radius: 22px; }
  #memory-input { min-height: 180px; font-size: 20px; }
  .recall-button { min-height: 70px; border-radius: 20px; padding: 0 24px; font-size: 21px; }
  .recalled-meta { align-items: flex-start; flex-direction: column; }
  .recalled-actions { flex-direction: column; }
  .recalled-actions .secondary-button { width: 100%; }
  .edit-footer { align-items: stretch; flex-direction: column; }
  .edit-footer .dialog-actions { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}