/* 이미지 필터 전용 스타일 */

nav { max-width: 800px; }
main { max-width: 800px; }

/* 드롭존 */
.dropzone {
  display: block;
  cursor: pointer;
  margin-bottom: 1rem;
  padding: 2.2rem 1rem;
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: 14px;
  text-align: center;
  transition: all 0.15s;
}
.dropzone:hover,
.dropzone:focus,
.dropzone.drag-over {
  border-color: var(--primary);
  background: rgba(102, 126, 234, 0.04);
  outline: none;
}
.dropzone[hidden] { display: none; }

.dropzone-content svg {
  color: var(--text-sub);
  margin-bottom: 0.85rem;
}
.dropzone-content p {
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
  color: var(--text);
}
.dropzone-content .hint {
  font-size: 0.78rem;
  color: var(--text-sub);
  margin-bottom: 0;
}

.editor {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.editor[hidden] { display: none; }

/* 프리셋 */
.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.preset-btn {
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.15s;
}
.preset-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(102, 126, 234, 0.04);
}

/* 미리보기 */
.preview-wrap {
  position: relative;
  padding: 0.7rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
}

.preview-wrap img {
  max-width: 100%;
  max-height: 420px;
  border-radius: 8px;
  display: block;
  margin: 0 auto;
  transition: filter 0.1s;
}

.btn-clear {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  width: 32px;
  height: 32px;
  font-size: 1.1rem;
  background: var(--surface);
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-clear:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--error);
  color: var(--error);
}

/* 필터 슬라이더 */
.filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 0.7rem;
  padding: 0.95rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.f-row {
  display: grid;
  grid-template-columns: 80px 1fr 50px;
  gap: 0.6rem;
  align-items: center;
}

.f-row label {
  font-size: 0.82rem;
  color: var(--text);
  font-weight: 500;
}

.f-row input[type="range"] {
  accent-color: var(--primary);
  min-width: 0;
}

.num {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-sub);
  text-align: right;
}

/* 액션 */
.actions {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  padding: 0.65rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  border: 1px solid transparent;
  min-height: 44px;
}
.btn-primary {
  flex: 1;
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

@media (max-width: 600px) {
  .filters { grid-template-columns: 1fr; }
  .preview-wrap img { max-height: 320px; }
}

@media (max-width: 480px) {
  .f-row { grid-template-columns: 70px 1fr 46px; }
  .actions .btn-primary { min-width: 0; }
}