* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

:root {
  --bg: #ffffff;
  --bg2: #f5f5f9;
  --card: #ffffff;
  --card2: #f7f7fb;
  --border: #e7e7f0;
  --text: #1c1c28;
  --text2: #71718a;
  --accent: #000000;
  --accent2: #3d3d3d;
  --good: #000000;
  --bad: #d9485c;
}

html, body { background: var(--bg); color: var(--text); font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif; }

.app-header {
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 18px 20px;
  padding-top: calc(env(safe-area-inset-top, 0px) + 14px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner { max-width: 760px; margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-text h1 { font-size: 22px; font-weight: 700; letter-spacing: 1px; color: #1c1c28; }
.logo-tshirt {
  width: 34px;
  height: 34px;
  background: #000000;
  flex-shrink: 0;
  clip-path: polygon(25% 0%, 40% 6%, 60% 6%, 75% 0%, 100% 4%, 86% 32%, 90% 100%, 50% 96%, 10% 100%, 14% 32%, 0% 4%);
}
.subtitle { font-size: 12px; color: var(--text2); margin-top: 4px; display: block; }

.container { max-width: 760px; margin: 0 auto; padding: 14px 14px 90px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: 0 4px 14px rgba(20, 20, 60, .05);
}
.card-title { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.card-title h2 { font-size: 16px; font-weight: 600; color: var(--accent); }
.hint { font-size: 12px; color: var(--text2); }

.req { color: var(--bad); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field span { font-size: 13px; color: var(--text2); }

input[type="text"], input[type="number"], textarea, select {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  width: 100%;
  outline: none;
  transition: border .15s;
}
input:focus, textarea:focus, select:focus { border-color: #000000; }
textarea { resize: vertical; font-family: inherit; }
select { appearance: none; }

.note-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }

.slot {
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.slot-head { display: flex; justify-content: space-between; align-items: center; }
.slot-name { font-size: 14px; font-weight: 600; color: var(--text); }
.slot-file { font-size: 11px; color: var(--good); max-width: 90px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.slot-file.empty { color: var(--text2); }

.slot-preview {
  width: 100%;
  height: 90px;
  border-radius: 8px;
  background: #ffffff;
  border: 1px dashed var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.slot-preview img { max-width: 100%; max-height: 100%; object-fit: contain; }
.slot-empty { color: var(--text2); font-size: 12px; }

.slot-mh { font-size: 12px; color: var(--text2); }
.mh-toggle { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.mh-toggle input { width: 16px; height: 16px; accent-color: var(--accent); }
.slot-mh input[type=file] { display: none; }
.slot-mh.mh-on .mh-toggle { color: var(--good); }

.slot-btn {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 8px;
  padding: 7px 0;
  font-size: 13px;
  cursor: pointer;
  transition: all .15s;
}
.slot-btn:hover { background: rgba(0,0,0,.06); }

.audio-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.audio-item { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--text2); }
.audio-item input { font-size: 12px; color: var(--text); }
.audio-item input::file-selector-button {
  background: var(--bg2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 10px; margin-right: 8px; cursor: pointer;
}

.preview-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
#preview {
  width: 100%;
  max-width: 420px;
  aspect-ratio: 420 / 760;
  background: #0c0e1c;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.action-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  padding: 12px 16px;
  display: flex;
  gap: 12px;
  max-width: 760px;
  margin: 0 auto;
  z-index: 60;
}
.btn {
  flex: 1;
  border: none;
  border-radius: 12px;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .1s, opacity .15s;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: linear-gradient(135deg, #2a2a2a 0%, #000000 100%);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
}
.btn-secondary { background: #f0f0f4; color: #3a3a3a; border: 1px solid #dddddd; }
.btn-ghost {
  background: transparent; color: var(--text2);
  border: 1px dashed var(--border); border-radius: 8px;
  padding: 8px 16px; font-size: 13px; cursor: pointer;
}
.btn-icon { margin-right: 6px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.app-footer { text-align: center; color: var(--text2); font-size: 12px; margin-top: 8px; line-height: 1.8; }

.toast {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 12px 20px;
  border-radius: 12px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: all .25s;
  z-index: 100;
  max-width: 90vw;
  box-shadow: 0 6px 24px rgba(20,20,60,.15);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.ok { border-color: var(--good); }
.toast.err { border-color: var(--bad); }

@media (max-width: 520px) {
  .form-grid { grid-template-columns: 1fr; }
  .note-grid { grid-template-columns: repeat(2, 1fr); }
}