/* ===== Manga Creative Studio - Mockup ===== */
:root {
  --bg: #f4f4f4;
  --card: #ffffff;
  --text: #111111;
  --muted: #6b6b6b;
  --border: #e0e0e0;
  /* モノクロ：アシスタント = ブラック / 生成 = ダークグレー で役割を区別 */
  --assist: #111111;
  --assist-soft: #f2f2f2;
  --generate: #555555;
  --generate-soft: #ebebeb;
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ----- Header ----- */
.app-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 64px;
}
.logo-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: #111111;
  color: #fff;
  font-weight: 800;
  display: grid;
  place-items: center;
}
.app-title {
  font-size: 1.25rem;
  margin: 0;
  letter-spacing: 0.02em;
}
.badge-mock {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 10px;
}

/* ----- Layout: PC 2カラム ----- */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding-top: 32px;
  padding-bottom: 32px;
  align-items: start;
}

/* ----- Panel (card) ----- */
.panel {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border-top: 6px solid;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.panel-assist { border-top-color: var(--assist); }
.panel-generate { border-top-color: var(--generate); }

.panel-head h2 {
  margin: 6px 0 6px;
  font-size: 1.4rem;
}
.panel-head .lead {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.step {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 2px 10px;
  border-radius: 999px;
}
.panel-assist .step { background: var(--assist-soft); color: var(--assist); }
.panel-generate .step { background: var(--generate-soft); color: var(--generate); }

/* ----- Form ----- */
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field > label {
  font-weight: 700;
  font-size: 0.9rem;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
select, textarea {
  width: 100%;
  font: inherit;
  font-size: 1rem; /* iOSのズーム防止のため16px */
  color: var(--text);
  background: #fcfcfc;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}
textarea { resize: vertical; }
select:focus, textarea:focus {
  outline: none;
  border-color: #888888;
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.12);
}
.panel-generate select:focus, .panel-generate textarea:focus {
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.12);
}

/* ----- Upload ----- */
.upload-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 28px 16px;
  border: 2px dashed #b5b5b5;
  border-radius: 12px;
  background: var(--assist-soft);
  text-align: center;
  cursor: pointer;
  transition: background 0.2s;
}
.upload-box:hover { background: #e8e8e8; }
.upload-icon { font-size: 2rem; line-height: 1; font-weight: 300; color: var(--muted); }
.upload-text { font-weight: 700; color: var(--assist); }
.upload-sub { font-size: 0.8rem; color: var(--muted); }

/* ----- Buttons ----- */
.btn {
  border: none;
  border-radius: 12px;
  padding: 16px 20px;
  min-height: 52px;
  font: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.2s, filter 0.2s;
}
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-assist {
  background: var(--assist);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}
.btn-generate {
  background: var(--generate);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* ----- Assist result ----- */
.result-box {
  background: var(--assist-soft);
  border-left: 4px solid var(--assist);
  border-radius: 12px;
  padding: 20px 22px;
}
.result-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--assist);
  margin-bottom: 6px;
}
.result-title { margin: 0 0 4px; font-weight: 700; }
.result-list { margin: 0; padding-left: 1.2em; }
.result-list li { margin-bottom: 6px; }

/* ----- Generate preview ----- */
.preview-head {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--generate);
  margin: 8px 0 -4px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* PC：2列 */
  gap: 20px;
}
.preview-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.preview-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}
.preview-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.page-no {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.tag {
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--generate-soft);
  color: #333333;
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}
.preview-image {
  aspect-ratio: 3 / 4;
  background: #f4f4f4;
  border-radius: 10px;
  padding: 12px;
}
/* 4コマの枠（番号付き） */
.koma-grid {
  display: grid;
  grid-template-rows: repeat(4, 1fr);
  gap: 8px;
  height: 100%;
  counter-reset: koma;
}
.koma-grid i {
  position: relative;
  display: block;
  background: #fff;
  border: 2px solid #bdbdbd;
  border-radius: 4px;
}
.koma-grid i::before {
  counter-increment: koma;
  content: counter(koma);
  position: absolute;
  top: 4px;
  left: 8px;
  font-style: normal;
  font-size: 0.75rem;
  font-weight: 700;
  color: #9e9e9e;
}
.preview-footer {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.preview-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.preview-caption {
  font-size: 0.85rem;
  font-weight: 700;
}
.status-chip {
  font-size: 0.75rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 1px 8px;
  white-space: nowrap;
}
.preview-note {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.6;
  color: #555555;
}

/* ----- Footer ----- */
.app-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  padding: 8px 24px 40px;
}

/* ===== タブレット ===== */
@media (max-width: 960px) {
  .main-grid { grid-template-columns: 1fr; } /* 縦並び */
  .preview-grid { grid-template-columns: repeat(2, 1fr); } /* タブレット：2列 */
}

/* ===== スマホ ===== */
@media (max-width: 600px) {
  .container { padding: 0 16px; }
  .main-grid { gap: 20px; padding-top: 20px; }
  .panel { padding: 22px 18px; }
  .panel-head h2 { font-size: 1.2rem; }
  .app-title { font-size: 1.05rem; }
  .field-row { grid-template-columns: 1fr; }
  .preview-grid { grid-template-columns: 1fr; gap: 16px; } /* スマホ：1列 */
  .preview-image { max-width: 320px; width: 100%; margin: 0 auto; }
  .btn { width: 100%; }
}

/* ===== Gemini API 連携で追加 ===== */
.hint {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}
.upload-file { font-size: 0.85rem; color: var(--text); }
.upload-file:empty { display: none; }
.result-body { white-space: pre-wrap; }
.result-box.is-loading .result-body { color: var(--muted); }
.btn:disabled { opacity: 0.6; cursor: wait; transform: none; }
.error-box {
  background: #ffffff;
  border: 2px solid #111111;
  border-left-width: 6px;
  color: #111111;
  font-weight: 700;
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 0.95rem;
}
.notice-box {
  background: var(--generate-soft);
  border: 1px solid #c4c4c4;
  color: #333333;
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 0.95rem;
}
.step-soon {
  background: #f0f0f0 !important;
  color: var(--muted) !important;
  font-weight: 600;
  letter-spacing: 0;
}