.cptw {
  --cptw-text: #1f2937;
  --cptw-muted: #667085;
  --cptw-border: #d7dde5;
  --cptw-surface: #ffffff;
  --cptw-soft: #f7f9fc;
  --cptw-focus: #2563eb;
  --cptw-primary: #2f6fed;
  --cptw-primary-hover: #245bd0;
  max-width: 860px;
  margin: 48px auto;
  padding: 0 20px;
  color: var(--cptw-text);
  box-sizing: border-box;
}

.cptw *,
.cptw *::before,
.cptw *::after {
  box-sizing: inherit;
}

.cptw__title {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  text-align: center;
}

.cptw__intro {
  margin: 12px auto 28px;
  max-width: 650px;
  color: var(--cptw-muted);
  text-align: center;
  font-size: 1.05rem;
}

.cptw__tool {
  background: var(--cptw-surface);
  border: 1px solid var(--cptw-border);
  border-radius: 18px;
  padding: clamp(18px, 4vw, 32px);
  box-shadow: 0 10px 30px rgba(16, 24, 40, 0.06);
}

/* ---------- Dropzone (only visible before a file is picked) ---------- */
.cptw__dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 250px;
  padding: 30px 20px;
  border: 2px dashed #b9c2d0;
  border-radius: 16px;
  background: var(--cptw-soft);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.cptw__dropzone:hover,
.cptw__dropzone:focus-within,
.cptw__dropzone[data-dragging="true"] {
  border-color: var(--cptw-primary);
  background: #f3f7ff;
}

.cptw__dropzone[data-dragging="true"] {
  transform: translateY(-1px);
}

.cptw__upload-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: #eaf1ff;
  color: var(--cptw-primary);
  font-size: 1.8rem;
  font-weight: 700;
}

.cptw__drop-title {
  font-size: 1.2rem;
  font-weight: 700;
}

.cptw__drop-subtitle {
  margin-top: 6px;
  color: var(--cptw-primary);
  font-weight: 600;
}

.cptw__file-hint {
  margin-top: 10px;
  color: var(--cptw-muted);
  font-size: 0.9rem;
}

.cptw__file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Workspace (only visible once a file is picked) ---------- */
.cptw__workspace {
  display: block;
}

.cptw__selected {
  padding: 16px 18px;
  border: 1px solid var(--cptw-border);
  border-radius: 12px;
  background: #fff;
}

.cptw__selected-name {
  font-weight: 700;
  overflow-wrap: anywhere;
}

.cptw__selected-meta {
  margin-top: 5px;
  color: var(--cptw-muted);
  font-size: 0.92rem;
}

/* ---------- Quality preset cards ---------- */
.cptw__quality {
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px solid var(--cptw-border);
  border-radius: 12px;
  background: #fff;
}

.cptw__quality-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 6px;
}

.cptw__quality-label {
  font-weight: 700;
}

.cptw__quality-value {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--cptw-primary) !important;
  font-variant-numeric: tabular-nums;
}

.cptw__quality-help {
  margin: 0 0 14px;
  color: var(--cptw-muted);
  font-size: 0.87rem;
}

/* Segmented "pill" control */
.cptw__quality-options {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--cptw-soft);
  border: 1px solid var(--cptw-border);
  border-radius: 999px;
}

.cptw__quality-option {
  flex: 1 1 0;
  padding: 10px 8px;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  text-align: center;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;

  /* Defensive: this theme applies its own background/color on button
     :hover, :focus and :active states (dark navy). Every state below
     is pinned explicitly with !important so the theme can never take
     over the pill's appearance, in either direction. */
  text-indent: 0 !important;
  overflow: visible !important;
  white-space: nowrap;
  line-height: 1.3 !important;
}

.cptw__quality-option,
.cptw__quality-option:focus,
.cptw__quality-option:active {
  background: transparent !important;
  color: var(--cptw-muted) !important;
}

.cptw__quality-option:hover,
.cptw__quality-option:focus-visible {
  background: rgba(47, 111, 237, 0.1) !important;
  color: var(--cptw-text) !important;
}

.cptw__quality-option.is-selected,
.cptw__quality-option.is-selected:hover,
.cptw__quality-option.is-selected:focus,
.cptw__quality-option.is-selected:active,
.cptw__quality-option.is-selected:focus-visible {
  background: #ffffff !important;
  color: var(--cptw-text) !important;
  box-shadow: 0 1px 3px rgba(16, 24, 40, 0.12), 0 0 0 1.5px var(--cptw-primary) inset;
}

/* ---------- Status line ---------- */
.cptw__status {
  min-height: 24px;
  margin: 16px 2px 0;
  font-size: 0.95rem;
}

.cptw__status[data-state="error"] {
  color: #b42318;
}

.cptw__status[data-state="success"] {
  color: #027a48;
}

.cptw__status[data-state="working"] {
  color: #344054;
}

/* ---------- Action buttons ---------- */
.cptw__actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.cptw__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 20px;
  border: 1.5px solid transparent;
  border-radius: 10px;
  font: inherit;
  font-weight: 700;
  text-align: center;
  line-height: 1.2;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease, color 0.15s ease;
}

.cptw__button:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.35);
  outline-offset: 2px;
}

.cptw__button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

/* This theme applies its own background/color on button :focus and
   :active states, which was overriding ours (the dark-navy "stuck"
   color after clicking). Every state below is pinned explicitly with
   !important so the theme can never take over a button's appearance. */

.cptw__button--primary,
.cptw__button--download,
.cptw__button--primary:focus,
.cptw__button--download:focus,
.cptw__button--primary:active,
.cptw__button--download:active {
  background: var(--cptw-primary) !important;
  color: #ffffff !important;
  border-color: transparent !important;
}

.cptw__button--primary:hover:not(:disabled),
.cptw__button--download:hover,
.cptw__button--primary:focus-visible,
.cptw__button--download:focus-visible {
  background: var(--cptw-primary-hover) !important;
  color: #ffffff !important;
}

.cptw__button--secondary,
.cptw__button--secondary:focus,
.cptw__button--secondary:active {
  border-color: var(--cptw-border) !important;
  background: #ffffff !important;
  color: var(--cptw-text) !important;
}

.cptw__button--secondary:hover,
.cptw__button--secondary:focus-visible {
  background: var(--cptw-soft) !important;
  border-color: #b9c2d0 !important;
  color: var(--cptw-text) !important;
}

/* ---------- Loading spinner inside the Convert button ---------- */
.cptw__spinner {
  width: 16px;
  height: 16px;
  border: 2.5px solid rgba(255, 255, 255, 0.4);
  border-top-color: #ffffff;
  border-radius: 50%;
  flex-shrink: 0;
  animation: cptw-spin 0.7s linear infinite;
}

@keyframes cptw-spin {
  to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .cptw__spinner {
    animation-duration: 1.6s;
  }
}

/* ---------- Result ---------- */
.cptw__result {
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px solid var(--cptw-border);
  border-radius: 12px;
  background: #fff;
}

.cptw__result-title {
  font-weight: 800;
  font-size: 1.05rem;
}

.cptw__result-meta {
  margin-top: 5px;
  color: var(--cptw-muted);
  font-size: 0.92rem;
}

.cptw__button--download {
  margin-top: 14px;
  width: 100%;
}

.cptw__privacy {
  margin: 14px auto 0;
  max-width: 720px;
  color: var(--cptw-muted);
  text-align: center;
  font-size: 0.88rem;
}

@media (max-width: 640px) {
  .cptw {
    margin: 32px auto;
    padding: 0 14px;
  }

  .cptw__tool {
    padding: 16px;
    border-radius: 14px;
  }

  .cptw__dropzone {
    min-height: 220px;
  }

  .cptw__quality-option {
    padding: 9px 4px;
    font-size: 0.82rem !important;
  }

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

  .cptw__button {
    width: 100%;
  }
}