:root {
  color-scheme: light;
  --paper: #f7f4ee;
  --surface: #ffffff;
  --ink: #222426;
  --muted: #666b70;
  --line: #d9d4cb;
  --accent: #216e4e;
  --accent-ink: #ffffff;
  --warn: #9b2f28;
  --focus: #7c5cff;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--paper);
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

button,
input {
  font: inherit;
}

.shell {
  width: min(760px, 100%);
  margin: 0 auto;
  padding: 24px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
  margin-bottom: 24px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 7vw, 3.5rem);
  font-weight: 750;
  line-height: 0.95;
}

h2 {
  font-size: 1rem;
  font-weight: 720;
}

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

.auth-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.upload-panel,
.result-panel {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.result-panel {
  margin-top: 16px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.dropzone {
  display: grid;
  align-content: center;
  gap: 4px;
  min-height: 170px;
  padding: 22px;
  border: 1px dashed #9c9488;
  border-radius: 8px;
  background: #fbfaf7;
  cursor: pointer;
}

.dropzone:focus-within,
.dropzone.dragging {
  outline: 3px solid color-mix(in srgb, var(--focus) 26%, transparent);
  border-color: var(--focus);
}

.dropzone-title {
  overflow-wrap: anywhere;
  font-size: 1.35rem;
  font-weight: 720;
}

.dropzone-meta {
  overflow-wrap: anywhere;
  font-size: 0.94rem;
}

.file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  max-width: 100%;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 680;
  line-height: 1.1;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.button.secondary {
  border-color: var(--line);
  background: #ffffff;
  color: var(--ink);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.actions {
  margin-top: 14px;
}

.url-output {
  display: block;
  min-height: 52px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow-wrap: anywhere;
  background: #fbfaf7;
}

.hidden {
  display: none !important;
}

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

@media (max-width: 560px) {
  .shell {
    padding: 18px;
  }

  .topbar,
  .panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .auth-actions,
  .actions,
  .button {
    width: 100%;
  }
}