:root {
  --bg: #f3f0e8;
  --ink: #1c1a16;
  --muted: #5c574d;
  --line: #d5cfc0;
  --accent: #0f5c4c;
  --accent-ink: #f7f4ec;
  --warn: #8a4b12;
  --ok: #1f6b3a;
  --ng: #9b2c2c;
  --panel: #fffdf8;
  --drop: #e7f2ee;
  /* 外部フォントは使わない（写真以外の通信を増やさない） */
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP",
    "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, #d9ebe4 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, #efe4c8 0%, transparent 50%),
    var(--bg);
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 1.5rem 1.1rem 3.5rem;
}

header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.45rem, 5vw, 1.85rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.lede {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.98rem;
}

.badge {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding: 0.35rem 0.55rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(15, 92, 76, 0.1);
  border-radius: 2px;
}

.howto {
  margin: 0 0 1.25rem;
  padding: 0.85rem 0.85rem 0.85rem 1.6rem;
  background: var(--panel);
  border: 1px solid var(--line);
  line-height: 1.55;
  font-size: 0.95rem;
}

.howto li {
  margin: 0.25rem 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1.1rem;
  margin-bottom: 1.25rem;
}

.dropzone {
  position: relative;
  display: block;
  margin-bottom: 1rem;
  border: 2px dashed var(--accent);
  background: var(--drop);
  text-align: center;
}

.dropzone.is-dragover {
  background: #d3ebe3;
  border-style: solid;
}

.dropzone:focus-within {
  box-shadow: 0 0 0 3px rgba(15, 92, 76, 0.35);
}

/* ネイティブ input をフォーカス可能に保つ（全面透明オーバーレイは使わない） */
.dropzone-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.dropzone-label {
  display: block;
  padding: 1.4rem 1rem;
  cursor: pointer;
}

.dropzone-title {
  display: block;
  margin: 0 0 0.4rem;
  font-weight: 600;
  font-size: 1.05rem;
}

.dropzone-hint {
  display: block;
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.dropzone-files {
  display: block;
  margin: 0.75rem 0 0;
  padding-top: 0.65rem;
  border-top: 1px solid var(--line);
  color: var(--ink);
  font-size: 0.9rem;
  line-height: 1.45;
  word-break: break-all;
}

.dropzone-files[hidden] {
  display: none;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
  font-size: 0.95rem;
}

.field.row {
  flex-direction: row;
  align-items: flex-start;
  gap: 0.55rem;
}

.hint {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

select,
input[type="text"] {
  font: inherit;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  min-height: 2.75rem;
}

.more {
  margin: 0.25rem 0 1rem;
  border: 1px solid var(--line);
  background: #fff;
}

.more summary {
  padding: 0.7rem 0.85rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--muted);
}

.more-body {
  padding: 0 0.85rem 0.85rem;
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

@media (min-width: 480px) {
  .actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

.btn {
  appearance: none;
  border: none;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 0.85rem 1.15rem;
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
  display: inline-block;
  text-align: center;
  min-height: 3rem;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.progress {
  margin-top: 1rem;
}

.progress[hidden] {
  display: none;
}

.progress-track {
  height: 0.55rem;
  background: var(--line);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.2s ease;
}

.progress-text {
  margin: 0.45rem 0 0;
  font-size: 0.92rem;
  color: var(--ink);
  line-height: 1.45;
}

.status {
  margin: 0.85rem 0 0;
  min-height: 1.3em;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
}

.issues {
  margin-top: 0.85rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid #e0b4b4;
  background: #fff5f5;
  color: var(--ng);
  font-size: 0.9rem;
}

.issues[hidden] {
  display: none;
}

.issues-title {
  margin: 0 0 0.4rem;
  font-weight: 600;
}

.issues ul {
  margin: 0;
  padding-left: 1.2rem;
}

.issues li {
  margin: 0.25rem 0;
  word-break: break-all;
}

.muted {
  color: var(--muted);
}

.section-title {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.section-title[hidden] {
  display: none;
}

.results {
  display: grid;
  gap: 0.9rem;
}

.result {
  display: grid;
  gap: 0.85rem;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 0.9rem;
}

@media (min-width: 560px) {
  .result {
    grid-template-columns: 140px 1fr;
  }
}

.result-preview img {
  width: 100%;
  height: auto;
  display: block;
  background: #e8e4d8;
}

.result-body h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
  word-break: break-all;
}

.meta {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.verdict {
  margin: 0 0 0.55rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.verdict.ok {
  color: var(--ok);
}

.verdict.ng {
  color: var(--ng);
}

.checks,
.warns {
  margin: 0 0 0.75rem;
  padding-left: 1.1rem;
  font-size: 0.85rem;
}

.checks .ok {
  color: var(--ok);
}

.checks .ng {
  color: var(--ng);
}

.checks span {
  color: var(--muted);
}

.warns {
  color: var(--warn);
}

footer {
  margin-top: 1.75rem;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.55;
}

footer a {
  color: var(--accent);
}

footer p {
  margin: 0 0 0.65rem;
}