:root {
  --bg: #f4efe6;
  --panel: rgba(255, 255, 255, 0.82);
  --text: #1f1d19;
  --muted: #6a645c;
  --line: rgba(31, 29, 25, 0.12);
  --accent: #0d5f8f;
  --accent-strong: #09476b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(13, 95, 143, 0.08), transparent 30%),
    radial-gradient(circle at bottom right, rgba(170, 138, 87, 0.12), transparent 28%),
    var(--bg);
}

.shell {
  width: min(1100px, calc(100vw - 48px));
  margin: 40px auto;
  display: grid;
  gap: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 28px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 0.95;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.85rem;
  font-weight: 700;
}

.lead,
.muted,
.meta {
  color: var(--muted);
}

.upload-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.newsletter-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.upload-form label {
  display: grid;
  gap: 8px;
}

.newsletter-grid label {
  display: grid;
  gap: 8px;
}

.upload-form span,
.section-head h2,
.asset-item h3 {
  font-family: Arial, sans-serif;
}

.upload-form input,
.newsletter-grid input,
.upload-form button,
.drop-footer button,
.copy-button {
  min-height: 48px;
  border-radius: 14px;
  border: 1px solid var(--line);
  padding: 12px 14px;
  font: inherit;
}

.upload-form button,
.drop-footer button,
.copy-button {
  background: var(--accent);
  color: #fff;
  border: 0;
  cursor: pointer;
}

.upload-form button:hover,
.drop-footer button:hover,
.copy-button:hover {
  background: var(--accent-strong);
}

.dropzone {
  border: 2px dashed rgba(13, 95, 143, 0.35);
  border-radius: 18px;
  padding: 28px;
  text-align: center;
  background: rgba(13, 95, 143, 0.04);
}

.drag-over {
  background: rgba(13, 95, 143, 0.1);
  border-color: var(--accent);
}

.drop-actions {
  display: inline-flex;
  margin-top: 12px;
}

.drop-actions span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.file-list {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.drop-footer {
  margin-top: 16px;
}

.result-box {
  margin-top: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.hidden {
  display: none;
}

.asset-list {
  display: grid;
  gap: 12px;
}

.asset-item {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
}

.asset-item h3,
.section-head h2 {
  margin: 0 0 6px;
}

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

@media (max-width: 760px) {
  .shell {
    width: min(100vw - 24px, 1100px);
    margin: 20px auto;
  }

  .panel {
    padding: 20px;
  }

  .upload-form {
    grid-template-columns: 1fr;
  }

  .newsletter-grid {
    grid-template-columns: 1fr;
  }

  .asset-item {
    flex-direction: column;
    align-items: flex-start;
  }
}