/* ————————————————————————————
   FaceIV — Photo Protection Tool
   ———————————————————————————— */

.tool {
  position: relative;
  z-index: 1;
  width: min(100% - 2rem, 880px);
  margin: 0 auto;
  padding: clamp(2.5rem, 7vh, 4.5rem) 0 4.5rem;
}

/* ——— Intro ——— */
.tool-intro {
  text-align: center;
  margin-bottom: clamp(1.75rem, 4vh, 2.75rem);
}

.tool-intro__kicker {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  letter-spacing: 0.05em;
  color: var(--teal);
}

.tool-intro__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5.5vw, 3.3rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--ink);
}

.tool-intro__copy {
  margin: 1rem auto 0;
  max-width: 42ch;
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  font-weight: 300;
  line-height: 1.65;
  color: var(--ink-soft);
}

.tool-intro__badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 1.35rem;
}

.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  padding: 0.42rem 0.85rem;
  border: 1px solid rgba(62, 207, 191, 0.22);
  border-radius: 999px;
  background: rgba(62, 207, 191, 0.06);
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.03em;
}

/* ——— Dropzone ——— */
.dropzone {
  position: relative;
  display: block;
  width: 100%;
  min-height: clamp(240px, 38vh, 340px);
  border: 1.5px dashed rgba(62, 207, 191, 0.35);
  border-radius: 1.1rem;
  background:
    radial-gradient(70% 90% at 50% 10%, rgba(26, 143, 130, 0.08), transparent 65%),
    rgba(7, 26, 20, 0.45);
  cursor: pointer;
  transition:
    border-color 0.3s var(--ease-soft),
    background 0.3s var(--ease-soft),
    transform 0.3s var(--ease-out),
    box-shadow 0.3s var(--ease-soft);
}

.dropzone:hover,
.dropzone:focus-visible {
  border-color: rgba(216, 255, 74, 0.55);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

.dropzone:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}

.dropzone.is-dragover {
  border-color: var(--lime);
  border-style: solid;
  background:
    radial-gradient(70% 90% at 50% 10%, rgba(216, 255, 74, 0.09), transparent 65%),
    rgba(7, 26, 20, 0.6);
  transform: scale(1.005);
}

.dropzone__inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 1.5rem;
  text-align: center;
  pointer-events: none;
}

.dropzone__icon {
  color: var(--teal);
  margin-bottom: 0.85rem;
  transition: transform 0.35s var(--ease-out);
}

.dropzone:hover .dropzone__icon,
.dropzone.is-dragover .dropzone__icon {
  transform: translateY(-4px);
}

.dropzone__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.65rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.dropzone__sub {
  margin: 0.15rem 0 0;
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--ink-soft);
}

.dropzone__formats {
  margin-top: 1.1rem;
  padding: 0.32rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
}

.dropzone__error {
  margin: 0.85rem 0 0;
  text-align: center;
  font-size: 0.9rem;
  color: #ff9d8f;
}

/* ——— Protection level ——— */
.level {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.level__label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.level__options {
  display: inline-flex;
  padding: 0.28rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(7, 26, 20, 0.55);
}

.level__opt {
  min-height: 2.6rem;
  padding: 0.5rem 1.25rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-mute);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition:
    color 0.25s var(--ease-soft),
    background 0.25s var(--ease-soft);
}

.level__opt:hover {
  color: var(--ink-soft);
}

.level__opt:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.level__opt.is-active {
  background: rgba(62, 207, 191, 0.14);
  color: var(--teal);
}

.level__opt.is-active[data-level="maximum"] {
  background: rgba(216, 255, 74, 0.12);
  color: var(--lime);
}

.level__desc {
  margin: 0;
  min-height: 1.3em;
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.01em;
  color: var(--ink-mute);
  text-align: center;
}

.processing__note {
  margin: 0.85rem auto 0;
  max-width: 46ch;
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.01em;
  color: var(--ink-mute);
}

.tool-privacy-note {
  display: block;
  margin: 1.15rem auto 0;
  max-width: 52ch;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.01em;
  color: var(--ink-mute);
}

/* ——— Processing ——— */
.processing {
  display: grid;
  gap: 1.5rem;
}

.processing__preview {
  position: relative;
  width: 100%;
  max-height: 46vh;
  overflow: hidden;
  border-radius: 1.1rem;
  border: 1px solid var(--line);
  background: rgba(4, 18, 14, 0.6);
}

#processing-canvas {
  display: block;
  width: 100%;
  max-height: 46vh;
  object-fit: contain;
  filter: saturate(0.9);
}

.processing__scanline {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 34%;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(62, 207, 191, 0.14) 45%,
    rgba(216, 255, 74, 0.22) 50%,
    rgba(62, 207, 191, 0.14) 55%,
    transparent
  );
  animation: scan 2.4s var(--ease-soft) infinite;
  pointer-events: none;
}

@keyframes scan {
  0% {
    transform: translateY(-60%);
  }
  100% {
    transform: translateY(320%);
  }
}

.processing__status {
  text-align: center;
}

.processing__step {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.4vw, 1.35rem);
  color: var(--ink);
  min-height: 1.5em;
}

.progress {
  position: relative;
  width: min(100%, 420px);
  height: 6px;
  margin: 0 auto;
  border-radius: 999px;
  background: rgba(247, 250, 246, 0.08);
  overflow: hidden;
}

.progress__fill {
  position: absolute;
  inset: 0 100% 0 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal-deep), var(--teal) 55%, var(--lime));
  transition: inset-inline-end 0.18s var(--ease-soft);
}

.processing__pct {
  margin: 0.6rem 0 0;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}

/* ——— Result ——— */
.result-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin: 0 auto 1.4rem;
  padding: 0.8rem 1.25rem;
  width: fit-content;
  max-width: 100%;
  border: 1px solid rgba(216, 255, 74, 0.3);
  border-radius: 999px;
  background: rgba(216, 255, 74, 0.07);
  color: var(--lime);
  font-size: clamp(0.85rem, 1.6vw, 0.95rem);
  font-weight: 500;
  letter-spacing: 0.01em;
  text-align: center;
}

.result-banner__icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

/* Before/After */
.compare {
  user-select: none;
}

.compare__frame {
  position: relative;
  width: 100%;
  max-height: 56vh;
  overflow: hidden;
  border-radius: 1.1rem;
  border: 1px solid var(--line);
  background: rgba(4, 18, 14, 0.6);
  touch-action: none;
  cursor: ew-resize;
}

.compare__img {
  display: block;
  width: 100%;
  max-height: 56vh;
  object-fit: contain;
  pointer-events: none;
}

.compare__clip {
  position: absolute;
  inset: 0;
  overflow: hidden;
  /* width set via --pos */
  clip-path: inset(0 calc(100% - var(--pos, 50%)) 0 0);
}

.compare__img--before {
  position: absolute;
  inset: 0;
  height: 100%;
}

.compare__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--pos, 50%);
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2px;
  pointer-events: none;
}

.compare__handle-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(216, 255, 74, 0.85);
  box-shadow: 0 0 12px rgba(216, 255, 74, 0.35);
}

.compare__handle-knob {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  border: 1px solid rgba(216, 255, 74, 0.5);
  background: rgba(4, 18, 14, 0.9);
  color: var(--lime);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.4);
}

.compare__label {
  position: absolute;
  top: 0.85rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(2, 9, 7, 0.72);
  backdrop-filter: blur(6px);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  pointer-events: none;
}

.compare__label--before {
  left: 0.85rem;
}

.compare__label--after {
  right: 0.85rem;
  color: var(--lime);
  border: 1px solid rgba(216, 255, 74, 0.25);
}

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

.result-meta {
  margin: 0.9rem 0 0;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.02em;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  margin-top: 1.6rem;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.15rem;
  padding: 0.9rem 1.5rem;
  border: 1px solid rgba(247, 250, 246, 0.18);
  border-radius: 0.5rem;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition:
    color 0.3s var(--ease-soft),
    border-color 0.3s var(--ease-soft),
    background 0.3s var(--ease-soft),
    transform 0.3s var(--ease-out);
}

.btn-ghost:hover {
  color: var(--ink);
  border-color: rgba(62, 207, 191, 0.5);
  background: rgba(62, 207, 191, 0.06);
  transform: translateY(-2px);
}

.btn-ghost:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* Stage transitions */
.tool-stage {
  animation: stage-in 0.55s var(--ease-out);
}

@keyframes stage-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ——— Mobile ——— */
@media (max-width: 560px) {
  .tool {
    width: min(100% - 1.5rem, 880px);
    padding-top: 1.75rem;
  }

  .dropzone {
    min-height: 220px;
  }

  .result-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .result-actions .btn-primary,
  .result-actions .btn-ghost {
    width: 100%;
    min-height: 3.4rem;
  }

  .compare__handle-knob {
    width: 2.75rem;
    height: 2.75rem;
  }

  .level__opt {
    padding: 0.5rem 0.95rem;
    font-size: 0.84rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .processing__scanline {
    animation: none;
    opacity: 0.4;
  }

  .tool-stage {
    animation: none;
  }
}