:root {
  --bg: #FFFFFF;
  --ink: #1C1A17;
  --sub: #64748B;
  --line: #E2E8F0;
  --card: #F8FAFC;
  --brown: #005BAC;
  --navy: #1B429A;
  --sky: #4C8CE4;
  --r: 20px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Sans JP', sans-serif;
  font-feature-settings: "palt";
  padding-bottom: calc(96px + env(safe-area-inset-bottom));
}

/* Hero */
.hero { text-align: center; padding: 40px 20px 20px; }
.eyebrow { margin: 0 0 8px; font-size: 11px; letter-spacing: .3em; color: var(--sub); font-weight: 700; }
.hero h1 {
  margin: 0; font-family: 'Zen Maru Gothic', sans-serif; font-weight: 900;
  font-size: clamp(34px, 7vw, 56px); letter-spacing: .02em; line-height: 1.1;
}
.spike {
  color: var(--brown); position: relative; display: inline-block;
}
.spike::after {
  content: ""; position: absolute; right: -14px; top: -6px; width: 6px; height: 70%;
  background: var(--brown); border-radius: 3px;
}
.lead { margin: 12px 0 0; color: var(--sub); font-size: 14px; font-weight: 500; }

/* Layout */
.layout {
  max-width: 1120px; margin: 0 auto; padding: 8px 16px 24px;
  display: grid; gap: 20px; grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .layout { grid-template-columns: 1.5fr 1fr; align-items: start; gap: 28px; }
  .preview { position: sticky; top: 24px; }
}

/* Preview */
.preview { position: sticky; top: 0; z-index: 5; padding-top: 8px; background: linear-gradient(var(--bg) 85%, transparent); }
.paper {
  background: #fff; border-radius: var(--r); padding: 10px;
  box-shadow: 0 1px 0 var(--line), 0 20px 40px -20px rgba(60, 40, 20, .25);
  transform: rotate(-.4deg);
}
#mainCanvas { display: block; width: 100%; height: auto; aspect-ratio: 1024 / 634; border-radius: 12px; }

/* Editor */
.editor { display: grid; gap: 14px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 18px;
}
.card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.card-head h2 { margin: 0; font-size: 15px; font-weight: 900; flex: 1; }
.num { font-family: 'Zen Maru Gothic'; font-weight: 900; font-size: 12px; color: var(--brown);
  border: 1.5px solid var(--brown); border-radius: 999px; padding: 2px 8px; }

textarea {
  width: 100%; resize: none; border: 1.5px solid var(--line); background: #fff;
  border-radius: 14px; padding: 12px 14px; font: 700 16px/1.5 'Noto Sans JP', sans-serif;
  color: var(--ink); transition: border-color .15s, box-shadow .15s;
}
textarea:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 4px rgba(28,26,23,.06); }
textarea::placeholder { color: #c9c0b2; }

/* Photo drop */
.drop {
  display: flex; align-items: center; gap: 12px; cursor: pointer;
  border: 1.5px dashed #cfc5b5; border-radius: 14px; padding: 14px; background: #fff;
  transition: background .15s;
}
.drop:active, .drop:hover { background: #faf6ef; }
.drop-icon { width: 40px; height: 40px; border-radius: 12px; background: var(--ink); color: #fff;
  display: grid; place-items: center; font-size: 22px; flex: none; }
.drop-text { font-weight: 700; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.privacy-note {
  margin: 8px 2px 0;
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10.5px;
  letter-spacing: -0.02em;
  font-weight: 500;
  color: #6E665B;
  line-height: 1.4;
}
.lock-icon {
  width: 14px;
  height: 14px;
  color: #005BAC;
  flex-shrink: 0;
}

/* Creator X Follow Footer */
.creator-footer {
  max-width: 1120px;
  margin: 4px auto 24px;
  padding: 0 16px;
  display: flex;
  justify-content: center;
}
.creator-card {
  width: 100%;
  max-width: 460px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 10px 8px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-shadow: 0 4px 14px rgba(45, 30, 15, 0.05);
}
.creator-info {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.creator-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--line);
  background: #fff;
  flex-shrink: 0;
}
.creator-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.creator-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--sub);
  line-height: 1.2;
}
.creator-name {
  font-size: 14px;
  font-weight: 900;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.x-follow-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 900;
  padding: 10px 16px;
  border-radius: 999px;
  flex-shrink: 0;
  transition: transform 0.12s, background 0.15s;
}
.x-follow-btn:hover {
  background: #000;
}
.x-follow-btn:active {
  transform: scale(0.96);
}
.x-logo {
  width: 14px;
  height: 14px;
}

.row { margin-top: 12px; }
.seg { display: flex; background: #E2E8F0; border-radius: 12px; padding: 4px; }
.seg button {
  flex: 1; border: 0; background: transparent; padding: 10px 0; border-radius: 9px;
  font: 700 13px 'Noto Sans JP'; color: var(--sub); cursor: pointer;
}
.seg button.on { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.08); }

.slider { display: flex; align-items: center; gap: 12px; margin-top: 14px; font-size: 13px; font-weight: 700; color: var(--sub); }
.slider input { flex: 1; accent-color: var(--ink); height: 28px; }

/* Period pair */
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.tag { align-self: flex-start; font-size: 11px; font-weight: 900; color: #fff; padding: 3px 10px; border-radius: 6px; }
.tag-light { background: var(--sky); }
.tag-dark { background: var(--navy); }
.mini-img { font-size: 12px; color: var(--sub); font-weight: 700; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }

/* Switch */
.switch { position: relative; width: 44px; height: 26px; cursor: pointer; }
.switch input { display: none; }
.switch i { position: absolute; inset: 0; background: #D9D0C2; border-radius: 99px; transition: .2s; }
.switch i::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; transition: .2s; box-shadow: 0 1px 2px rgba(0,0,0,.2); }
.switch input:checked + i { background: var(--brown); }
.switch input:checked + i::after { transform: translateX(18px); }

.reset { justify-self: center; border: 0; background: none; color: var(--sub); font: 700 13px 'Noto Sans JP'; padding: 8px; cursor: pointer; text-decoration: underline; text-underline-offset: 4px; }

/* Action bar */
.actionbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  display: flex; gap: 8px; justify-content: center; align-items: center;
  padding: 12px 12px calc(12px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, .9); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--line);
}
.btn { border: 0; border-radius: 999px; padding: 14px 18px; font: 900 14px 'Noto Sans JP'; cursor: pointer; transition: transform .1s; white-space: nowrap; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; }
.btn:active { transform: scale(.97); }
.btn.primary { background: var(--ink); color: #fff; flex: 1; max-width: 180px; }
.btn.share { background: #005BAC; color: #fff; flex: 1; max-width: 190px; }
.btn.ghost { background: #fff; color: var(--ink); border: 1.5px solid var(--line); }

.x-bar-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: #fff;
  color: var(--ink);
  border: 1.5px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px 6px 6px;
  text-decoration: none;
  font: 900 12px 'Noto Sans JP', sans-serif;
  white-space: nowrap;
  transition: transform .1s, border-color .15s, box-shadow .15s;
}
.x-bar-btn:hover {
  border-color: var(--ink);
  box-shadow: 0 4px 12px rgba(28, 26, 23, .08);
}
.x-bar-btn:active {
  transform: scale(.97);
}
.x-bar-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--line);
  flex-shrink: 0;
}
.x-bar-logo {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}
.x-bar-text {
  line-height: 1;
}

.toast {
  position: fixed; left: 50%; bottom: calc(90px + env(safe-area-inset-bottom)); transform: translate(-50%, 20px);
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 999px; font-size: 13px; font-weight: 700;
  opacity: 0; transition: .25s; pointer-events: none; z-index: 30; white-space: nowrap;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 899px) {
  .hero { padding: 24px 16px 6px; }
  .lead { display: none; }
  .paper { transform: none; padding: 6px; }
}

@media (max-width: 480px) {
  .actionbar { flex-wrap: wrap; gap: 6px; padding: 10px 10px calc(10px + env(safe-area-inset-bottom)); }
  .btn { padding: 11px 12px; font-size: 12px; }
  .btn.primary, .btn.share { flex: 1 1 auto; padding: 11px 12px; max-width: none; }
  .x-bar-btn { padding: 4px 10px 4px 4px; gap: 5px; font-size: 11px; }
  .x-bar-avatar { width: 26px; height: 26px; }
}

/* Share Modal */
.modal[hidden] { display: none !important; }
.modal {
  position: fixed; inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(15, 23, 42, .55);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.modal-box {
  position: relative; z-index: 1;
  width: 100%; max-width: 440px;
  background: #fff; border-radius: 24px;
  padding: 24px 20px 20px;
  box-shadow: 0 24px 48px rgba(15, 23, 42, .22);
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.modal-close {
  position: absolute; top: 14px; right: 14px;
  width: 32px; height: 32px; border-radius: 50%; border: 0;
  background: #F1F5F9; color: var(--ink); font-size: 14px; font-weight: 900;
  cursor: pointer;
}
.modal-badge {
  background: #E0F2FE; color: #005BAC;
  font-size: 12px; font-weight: 900;
  padding: 6px 14px; border-radius: 999px;
}
.modal-title {
  margin: 0; font-size: 18px; font-weight: 900; color: var(--ink); line-height: 1.4;
}
.modal-title kbd {
  display: inline-block; background: #F1F5F9; border: 1.5px solid #CBD5E1;
  border-radius: 6px; padding: 1px 7px; font-family: inherit; font-size: 16px;
}
.modal-desc {
  margin: 0; font-size: 12.5px; color: var(--sub); line-height: 1.6;
}
.modal-desc strong { color: var(--ink); }
.modal-preview {
  width: 100%; max-height: 210px; object-fit: contain;
  border-radius: 12px; border: 1.5px solid var(--line); background: #fff;
}
.modal-actions {
  width: 100%; display: flex; flex-direction: column; gap: 8px; margin-top: 4px;
}
.modal-tweet-btn {
  max-width: none !important; width: 100%; text-decoration: none;
  display: inline-flex; align-items: center; justify-content: center;
  background: #005BAC !important;
}
.modal-dl-btn {
  width: 100%; font-size: 12.5px; padding: 11px;
}

/* overflow guard */
html, body { overflow-x: hidden; }
.layout { grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .layout { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); } }
.editor, .card, .field, .pair > * { min-width: 0; }
.pair { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.toast { visibility: hidden; }
.toast.show { visibility: visible; }
.spike::after { display: none; }