:root {
  --bg: #e7edf1;
  --bg-accent: #c7d5de;
  --surface: rgba(250, 252, 253, 0.88);
  --surface-strong: #fbfdfe;
  --border: rgba(30, 46, 58, 0.14);
  --text: #182028;
  --muted: #556471;
  --brand: #4b6d85;
  --brand-deep: #355367;
  --brand-soft: rgba(75, 109, 133, 0.14);
  --brand-tint: #dbe7ef;
  --success: #0f7b57;
  --success-soft: rgba(15, 123, 87, 0.12);
  --error: #b43f2e;
  --error-soft: rgba(180, 63, 46, 0.12);
  --shadow: 0 24px 60px rgba(22, 34, 44, 0.14);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(75, 109, 133, 0.28), transparent 32%),
    radial-gradient(circle at right 18%, rgba(255, 255, 255, 0.85), transparent 22%),
    linear-gradient(150deg, #eef3f6 0%, var(--bg) 45%, var(--bg-accent) 100%);
}

.shell {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

.hero {
  padding: 12px 4px 32px;
}

.eyebrow,
.file-meta,
.status-banner,
.image-state {
  font-family: "IBM Plex Mono", monospace;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.brand-lockup {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  justify-self: end;
  width: min(100%, 500px);
}

.brand-plaque {
  width: 220px;
  min-width: 220px;
  padding: 12px;
  border-radius: 24px;
  border: 1px solid rgba(75, 109, 133, 0.18);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(219, 231, 239, 0.96));
  box-shadow: 0 22px 48px rgba(44, 70, 88, 0.18);
}

.brand-logo {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
}

.brand-copy {
  display: grid;
  gap: 6px;
  max-width: 240px;
  padding-top: 6px;
}

.brand-copy .eyebrow {
  margin: 0;
  color: rgba(24, 32, 40, 0.76);
}

.brand-tag {
  margin: 0;
  max-width: 34ch;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.5;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: start;
}

.hero-copy {
  min-width: 0;
  padding-top: 18px;
}

.section-kicker {
  margin: 0 0 12px;
  color: var(--brand);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-note {
  padding: 22px;
  border: 1px solid rgba(75, 109, 133, 0.18);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(91, 127, 151, 0.2), rgba(255, 255, 255, 0.9));
  color: var(--text);
  box-shadow: 0 20px 46px rgba(44, 70, 88, 0.12);
}

.hero-note-label {
  margin: 0 0 10px;
  color: var(--brand-deep);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-note-text {
  margin: 0;
  line-height: 1.6;
  color: var(--muted);
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: clamp(2.6rem, 4.8vw, 4.4rem);
  line-height: 0.98;
  max-width: none;
  white-space: nowrap;
}

.lede {
  max-width: 52ch;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.panel,
.result-card,
.upload-preview-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.panel {
  padding: 28px;
}

.upload-form {
  display: grid;
  gap: 16px;
}

.input-label {
  font-size: 0.95rem;
  font-weight: 500;
}

input[type="file"] {
  width: 100%;
  padding: 18px;
  border: 1px dashed rgba(75, 109, 133, 0.32);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font: inherit;
}

button {
  width: fit-content;
  min-width: 180px;
  padding: 14px 22px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand-deep) 0%, var(--brand) 100%);
  color: #f7fbfd;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
  box-shadow: 0 14px 24px rgba(53, 83, 103, 0.24);
}

button:hover:enabled {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.file-meta,
.status-banner {
  padding: 14px 16px;
  border-radius: 16px;
  font-size: 0.9rem;
}

.file-meta {
  background: rgba(255, 255, 255, 0.78);
  color: var(--muted);
}

.status-banner {
  margin-top: 18px;
  border: 1px solid transparent;
}

.status-banner.pending {
  background: rgba(41, 104, 184, 0.1);
  border-color: rgba(41, 104, 184, 0.2);
  color: #164a88;
}

.status-banner.success {
  background: var(--success-soft);
  border-color: rgba(15, 123, 87, 0.2);
  color: var(--success);
}

.status-banner.error {
  background: var(--error-soft);
  border-color: rgba(180, 63, 46, 0.22);
  color: var(--error);
}

.result-section {
  margin-top: 24px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.result-card {
  padding: 22px;
}

.result-card h2,
.upload-preview-card h2 {
  font-size: 1rem;
  margin-bottom: 14px;
}

.upload-preview-card {
  padding: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.8), rgba(247, 251, 253, 0.94));
}

.result-summary {
  color: var(--muted);
  line-height: 1.6;
}

.summary-intro,
.summary-note {
  margin: 0;
}

.summary-intro {
  color: var(--text);
  font-weight: 700;
}

.summary-checks {
  margin: 12px 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.summary-checks li {
  padding-left: 18px;
  position: relative;
}

.summary-checks li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 700;
}

.summary-note {
  font-size: 0.95rem;
}

.error-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.error-list li {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(180, 63, 46, 0.07);
  border: 1px solid rgba(180, 63, 46, 0.14);
}

.error-code {
  display: inline-block;
  margin-bottom: 6px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  color: var(--error);
}

#result-image,
#upload-preview-image {
  width: 100%;
  border-radius: 16px;
  object-fit: contain;
  max-height: 420px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
}

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

@media (max-width: 820px) {
  .shell {
    width: min(100% - 20px, 100%);
    padding-top: 28px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .hero-copy {
    padding-top: 0;
  }

  .brand-lockup {
    justify-self: start;
    width: 100%;
    flex-direction: row;
    align-items: center;
  }

  h1 {
    white-space: normal;
  }

  .brand-plaque {
    width: min(100%, 280px);
  }

  .panel {
    padding: 18px;
  }

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

  button {
    width: 100%;
  }
}

@media (max-width: 620px) {
  .brand-lockup {
    flex-direction: column;
    align-items: flex-start;
  }

  .brand-plaque {
    width: min(100%, 280px);
    min-width: 0;
  }

  .brand-copy {
    max-width: none;
    padding-top: 0;
  }
}