:root {
  color-scheme: dark;
  --bg: #07131f;
  --panel: rgba(9, 22, 36, 0.9);
  --border: rgba(255, 255, 255, 0.14);
  --text: #f3f8ff;
  --muted: #95a8bc;
  --accent: #50b3ff;
  --accent-2: #3ecf8e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: radial-gradient(circle at top, #12324f 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
}

.page-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 24px 28px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(80, 179, 255, 0.16), rgba(62, 207, 142, 0.12));
  backdrop-filter: blur(8px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-mark {
  width: 110px;
  flex: 0 0 110px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}

.brand-mark svg {
  width: 100%;
  height: 100%;
  display: block;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.brand-copy {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 6px;
  font-family: "Arial Black", "Segoe UI Black", Impact, sans-serif;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  letter-spacing: -0.04em;
  text-transform: none;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-family: "Arial Black", "Segoe UI Black", Impact, sans-serif;
  font-size: clamp(1.65rem, 3vw, 2.4rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  max-width: 700px;
  font-size: 1rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.25);
}

.controls {
  display: grid;
  grid-template-columns: 1.7fr 1fr auto;
  gap: 14px;
  align-items: end;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
}

.field input {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 1rem;
  background: rgba(255,255,255,0.04);
  color: var(--text);
}

button,
.download-btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 10px 16px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: white;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.info {
  margin-top: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.status-box {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text);
}

.result-section {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.hidden {
  display: none;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

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

.summary {
  color: var(--muted);
  margin-bottom: 14px;
}

.preview-box {
  padding: 16px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  color: #dce7f1;
  font-size: 0.9rem;
}

@media (max-width: 760px) {
  .hero {
    align-items: flex-start;
  }

  .brand {
    align-items: flex-start;
  }

  .brand-mark {
    width: 88px;
    flex-basis: 88px;
  }

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

  .result-header {
    flex-direction: column;
    align-items: flex-start;
  }
}