:root {
  color-scheme: dark;
  --bg: #101217;
  --panel: #1b2029;
  --panel-soft: #232936;
  --text: #f4f7fb;
  --muted: #aab4c3;
  --line: #333b4a;
  --accent: #45c2a0;
  --accent-strong: #34a884;
  --danger: #f97373;
  --danger-bg: #3a2025;
  --shadow: 0 24px 70px rgb(0 0 0 / 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgb(69 194 160 / 0.16), transparent 34rem),
    linear-gradient(135deg, #101217 0%, #171b24 48%, #11151d 100%);
  color: var(--text);
}

button,
input {
  font: inherit;
}

button {
  min-height: 2.75rem;
  border: 0;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: #07110e;
  font-weight: 750;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, opacity 160ms ease;
}

button:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

button.secondary {
  background: var(--panel-soft);
  color: var(--text);
  border: 1px solid var(--line);
}

button.secondary:hover {
  background: #2a3140;
}

button.danger {
  background: var(--danger-bg);
  color: #ffd4d4;
  border: 1px solid rgb(249 115 115 / 0.35);
}

button.danger:hover {
  background: #4a262d;
}

.app-shell {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 1rem;
}

.panel {
  margin: 1rem 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgb(27 32 41 / 0.88);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  gap: 1.25rem;
}

.eyebrow {
  margin: 0 0 0.4rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.1rem, 14vw, 4.3rem);
}

h2 {
  font-size: 1.35rem;
}

.lede {
  max-width: 46rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

.access-card {
  display: grid;
  gap: 0.6rem;
}

.access-card label {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.access-row {
  display: grid;
  gap: 0.6rem;
}

input[type="password"] {
  width: 100%;
  min-height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem 0.9rem;
  background: #121720;
  color: var(--text);
  outline: none;
}

input[type="password"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgb(69 194 160 / 0.18);
}

.upload-form {
  display: grid;
  gap: 0.9rem;
}

.file-picker {
  display: grid;
  gap: 0.35rem;
  min-height: 8.5rem;
  border: 1px dashed rgb(170 180 195 / 0.5);
  border-radius: 8px;
  padding: 1rem;
  background: #141922;
  cursor: pointer;
  place-content: center;
  text-align: center;
}

.file-picker input {
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  position: absolute;
}

.file-picker-title {
  font-size: 1.1rem;
  font-weight: 800;
}

.file-picker-meta {
  color: var(--muted);
  overflow-wrap: anywhere;
}

.status {
  min-height: 1.5rem;
  margin: 0.85rem 0 0;
  color: var(--muted);
  line-height: 1.4;
}

.status.error {
  color: #ffb3b3;
}

.status.success {
  color: #a9f3d9;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.file-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.empty-state,
.file-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #141922;
}

.empty-state {
  padding: 1rem;
  color: var(--muted);
}

.file-item {
  display: grid;
  gap: 0.9rem;
  padding: 0.9rem;
}

.file-name {
  margin: 0 0 0.35rem;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.file-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.file-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  background: var(--panel-soft);
  color: var(--text);
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 750;
}

.download-link:hover {
  background: #2a3140;
}

.missing-key-message {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0.75rem;
  border: 1px solid rgb(249 115 115 / 0.35);
  border-radius: 8px;
  background: var(--danger-bg);
  color: #ffd4d4;
  font-size: 0.92rem;
  line-height: 1.4;
}

@media (min-width: 700px) {
  .app-shell {
    padding: 2rem;
  }

  .panel {
    padding: 1.4rem;
  }

  .hero {
    grid-template-columns: 1fr minmax(280px, 380px);
    align-items: end;
  }

  .access-row {
    grid-template-columns: 1fr auto auto;
  }

  .upload-form {
    grid-template-columns: 1fr auto;
    align-items: stretch;
  }

  .file-item {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .file-actions {
    width: 220px;
  }
}