/* ============================================
   未明シアター LP ジェネレーター — スタイル
   ============================================ */

:root {
  --black:       #0a0a0a;
  --deep:        #111118;
  --surface:     #1a1a28;
  --surface2:    #22223a;
  --border:      #2e2e4a;
  --accent:      #c8a96e;       /* ゴールド */
  --accent2:     #9b59b6;       /* パープル */
  --accent-glow: rgba(200,169,110,0.18);
  --text:        #f0ede8;
  --text-muted:  #888899;
  --text-sub:    #bbb8cc;
  --red:         #e05555;
  --radius:      12px;
  --radius-lg:   20px;
  --transition:  0.25s cubic-bezier(0.4,0,0.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--black);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.7;
}

/* ============================================
   HEADER
   ============================================ */
.tool-header {
  background: linear-gradient(135deg, #0d0d1a 0%, #1a1040 50%, #0d0d1a 100%);
  border-bottom: 1px solid var(--border);
  padding: 28px 40px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.brand-label {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.brand-divider {
  color: var(--border);
  font-size: 1.2rem;
}

.brand-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.header-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

/* ============================================
   MAIN LAYOUT
   ============================================ */
.tool-main {
  padding: 48px 20px 80px;
}

.tool-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

/* ============================================
   STEP INDICATOR
   ============================================ */
.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  background: var(--surface);
  transition: var(--transition);
}

.step.active .step-num {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
  box-shadow: 0 0 16px var(--accent-glow);
}

.step-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.step.active .step-label {
  color: var(--accent);
}

.step-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--border));
  margin: 0 8px;
  margin-bottom: 22px;
  max-width: 120px;
}

/* ============================================
   FORM SECTIONS
   ============================================ */
.form-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  position: relative;
  overflow: hidden;
}

.form-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}

.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.section-num {
  font-family: 'Noto Serif JP', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.5;
  line-height: 1;
}

.section-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.06em;
}

.section-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  margin-top: -16px;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group.full-width { grid-column: 1 / -1; }

.form-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-sub);
  letter-spacing: 0.04em;
}

.required {
  color: var(--accent);
  margin-left: 4px;
}

.form-input,
.form-textarea {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
  resize: vertical;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-muted); font-size: 0.88rem; }

/* URL 入力欄 */
.url-input-wrap {
  display: flex;
  align-items: center;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.url-input-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.url-prefix {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 100%;
  font-size: 1.1rem;
  flex-shrink: 0;
  padding: 12px 0;
}

.url-prefix.yt    { color: #ff4444; }
.url-prefix.insta { color: #c13584; }
.url-prefix.tw    { color: #aaaaaa; }
.url-prefix.tt    { color: #dddddd; }

.url-input {
  border: none !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  flex: 1;
  padding-left: 4px;
}

/* ============================================
   UPLOAD AREA
   ============================================ */
.upload-area {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface2);
  transition: var(--transition);
  overflow: hidden;
  min-height: 160px;
}

.upload-area:hover {
  border-color: var(--accent);
  background: rgba(200,169,110,0.04);
}

.upload-area.dragover {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  cursor: pointer;
  gap: 10px;
}

.upload-icon {
  font-size: 2.4rem;
  color: var(--text-muted);
}

.upload-text {
  font-size: 0.92rem;
  color: var(--text-sub);
}

.upload-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.upload-preview {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  display: block;
  border-radius: var(--radius);
}

.upload-remove {
  position: absolute;
  top: 10px; right: 10px;
  background: rgba(0,0,0,0.7);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.8rem;
  padding: 6px 12px;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Noto Sans JP', sans-serif;
}

.upload-remove:hover { background: var(--red); border-color: var(--red); }

.hidden { display: none !important; }

/* ============================================
   CAST SNS FIELDS
   ============================================ */
.cast-sns-fields {
  margin-top: 4px;
}

.cast-sns-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
  font-weight: 500;
}

.cast-sns-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* ============================================
   CAST CARDS
   ============================================ */
.cast-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  position: relative;
}

.cast-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.cast-card-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.cast-remove-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 5px 12px;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Noto Sans JP', sans-serif;
}

.cast-remove-btn:hover { border-color: var(--red); color: var(--red); }

.cast-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  align-items: start;
}

.cast-photo-upload {
  position: relative;
}

.cast-photo-area {
  width: 140px;
  height: 180px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  gap: 8px;
  transition: var(--transition);
  overflow: hidden;
}

.cast-photo-area:hover { border-color: var(--accent); }

.cast-photo-area .upload-icon { font-size: 1.8rem; }

.cast-photo-area .upload-text { font-size: 0.78rem; text-align: center; }

.cast-photo-preview {
  width: 140px;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 2px solid var(--accent);
}

.cast-fields {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ============================================
   STILLS GRID
   ============================================ */
.stills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.still-item {
  position: relative;
  aspect-ratio: 16/9;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface2);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.still-item:hover { border-color: var(--accent); }

.still-item .upload-placeholder {
  padding: 20px;
  height: 100%;
}

.still-item .upload-icon { font-size: 1.6rem; }
.still-item .upload-text { font-size: 0.75rem; }
.still-item .upload-sub { display: none; }

.still-preview {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.still-remove {
  position: absolute;
  top: 6px; right: 6px;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: rgba(0,0,0,0.75);
  border: none;
  color: #fff;
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.still-remove:hover { background: var(--red); }

.still-caption-input {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(0,0,0,0.6);
  border: none;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: var(--text);
  font-size: 0.72rem;
  font-family: 'Noto Sans JP', sans-serif;
  padding: 5px 8px;
  outline: none;
}

.still-caption-input::placeholder { color: rgba(255,255,255,0.4); }

/* ============================================
   ADD BUTTONS
   ============================================ */
.add-cast-btn,
.add-still-btn {
  width: 100%;
  padding: 14px;
  background: transparent;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.add-cast-btn:hover,
.add-still-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ============================================
   GENERATE BUTTON
   ============================================ */
.generate-area {
  text-align: center;
}

.generate-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--accent), #e8c97e, var(--accent));
  background-size: 200% 200%;
  border: none;
  border-radius: 50px;
  color: #0a0a0a;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 18px 56px;
  cursor: pointer;
  letter-spacing: 0.08em;
  transition: var(--transition);
  box-shadow: 0 8px 32px rgba(200,169,110,0.35);
  animation: shimmer 3s ease infinite;
}

.generate-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(200,169,110,0.5);
}

.generate-btn:active { transform: translateY(0); }

@keyframes shimmer {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.generate-note {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(6px);
}

.modal-inner {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.modal-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.modal-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-actions {
  display: flex;
  gap: 10px;
}

.modal-btn {
  padding: 9px 20px;
  border-radius: 8px;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.download-btn {
  background: var(--accent);
  border: none;
  color: #0a0a0a;
}
.download-btn:hover { background: #e8c97e; }

.close-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.close-btn:hover { border-color: var(--red); color: var(--red); }

.modal-body {
  flex: 1;
  overflow: hidden;
}

#preview-iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 680px) {
  .tool-header { padding: 20px; }
  .form-section { padding: 24px 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.full-width { grid-column: auto; }
  .cast-grid { grid-template-columns: 1fr; }
  .cast-photo-area, .cast-photo-preview { width: 100%; height: 200px; }
  .step-line { max-width: 40px; }
  .generate-btn { padding: 16px 32px; font-size: 0.95rem; }
  .stills-grid { grid-template-columns: repeat(2, 1fr); }
}