/* -------------------------------- 

File#: _2_drag-drop-file
Title: Drag and Drop File
Descr: Drag files over a droppable area to upload them
Usage: codyhouse.co/license

-------------------------------- */
.ddf__area {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 2px dashed var(--color-contrast-low);
  background-color: var(--color-bg-dark);
  transition: 0.3s;
}
.ddf__area:hover {
  border-color: var(--color-contrast-medium);
}

.ddf__label {
  cursor: pointer;
}
.ddf__label::before {
  /* this element triggers (onClick) dialog to select files */
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  cursor: inherit;
}

.ddf__icon-cloud *:nth-child(2) {
  transition: fill 0.3s;
  fill: var(--color-bg-dark);
}

.ddf__label-end {
  /* message visible when files have been dropped */
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  pointer-events: none;
}

.ddf__label-inner, .ddf__label-end-inner {
  transition: opacity 0.3s, -webkit-transform 0.3s var(--ease-out);
  transition: opacity 0.3s, transform 0.3s var(--ease-out);
  transition: opacity 0.3s, transform 0.3s var(--ease-out), -webkit-transform 0.3s var(--ease-out);
}

.ddf__label-end-inner {
  opacity: 0;
  -webkit-transform: translateY(25px);
          transform: translateY(25px);
}

.ddf__icon-file {
  /* file icon */
}
.ddf__icon-file *:nth-child(1), .ddf__icon-file *:nth-child(2) {
  /* file icons in the back */
  -webkit-transform-origin: 32px 50px;
          transform-origin: 32px 50px;
  opacity: 0;
  transition: opacity 0.3s, -webkit-transform 0.5s var(--ease-out);
  transition: opacity 0.3s, transform 0.5s var(--ease-out);
  transition: opacity 0.3s, transform 0.5s var(--ease-out), -webkit-transform 0.5s var(--ease-out);
}
.ddf__icon-file *:nth-child(1) {
  /* file - left */
  -webkit-transform: rotate(15deg);
          transform: rotate(15deg);
}
.ddf__icon-file *:nth-child(2) {
  /* file - right */
  -webkit-transform: rotate(-15deg);
          transform: rotate(-15deg);
}

/* files over drop area */
.ddf__area--file-hover, .ddf__area:focus-within {
  border-color: var(--color-primary);
  background-color: var(--color-bg);
}
.ddf__area--file-hover .ddf__icon-cloud, .ddf__area:focus-within .ddf__icon-cloud {
  color: var(--color-primary);
}
.ddf__area--file-hover .ddf__icon-cloud *:nth-child(2), .ddf__area:focus-within .ddf__icon-cloud *:nth-child(2) {
  fill: var(--color-bg);
}

.ddf__area--file-hover .ddf__icon-cloud *:nth-child(2) {
  -webkit-animation: ddf-icon-cloud 1s infinite;
          animation: ddf-icon-cloud 1s infinite;
  -webkit-transform-origin: 32px 32px;
          transform-origin: 32px 32px;
}

/* files dropped */
.ddf__area--file-dropped {
  /* files have been selected */
}
.ddf__area--file-dropped .ddf__label-inner {
  opacity: 0;
  -webkit-transform: translateY(-25px);
          transform: translateY(-25px);
}
.ddf__area--file-dropped .ddf__label-end-inner {
  opacity: 1;
  -webkit-transform: translateY(0px);
          transform: translateY(0px);
}
.ddf__area--file-dropped .ddf__icon-file *:nth-child(1), .ddf__area--file-dropped .ddf__icon-file *:nth-child(2) {
  /* file icons in the back */
  opacity: 0.7;
  -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
}

/* files list */
.ddf__item {
  display: flex;
  align-items: center;
  background-color: var(--color-bg-light);
  border-radius: var(--radius-md);
  box-shadow: var(--inner-glow), var(--shadow-sm);
  padding: var(--space-xs);
}
.ddf__item:not(:last-child) {
  margin-bottom: var(--space-xs);
}

.ddf__file-name {
  font-size: var(--text-sm);
  margin-right: var(--space-xs);
}

.ddf__remove-btn {
  background-color: var(--color-contrast-lower);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background 0.2s;
  margin-left: auto;
  flex-shrink: 0;
}
.ddf__remove-btn:hover {
  background-color: hsl(var(--color-contrast-lower-h), var(--color-contrast-lower-s), calc(var(--color-contrast-lower-l) * 0.95));
}
.ddf__remove-btn:focus {
  outline: 2px solid hsla(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l), 0.25);
  outline-offset: 2px;
}

/* circle progress animation */
.ddf__progress {
  --c-progress-bar-size: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.ddf__progress-circle-mask {
  fill: var(--color-bg);
  stroke: none;
  -webkit-transform-origin: 12px 12px;
          transform-origin: 12px 12px;
}

.ddf__progress-circle {
  opacity: 0;
  fill: currentColor;
}

.ddf__progress-check {
  opacity: 0;
  stroke: var(--color-white);
  stroke-dashoffset: 16;
  stroke-dasharray: 17;
}

.ddf__progress--complete {
  /* added in JS when progress = 100% */
}
.ddf__progress--complete .c-progress-bar__bg,
.ddf__progress--complete .c-progress-bar__fill {
  opacity: 0;
}
.ddf__progress--complete .ddf__progress-circle {
  opacity: 1;
}
.ddf__progress--complete .ddf__progress-circle-mask {
  -webkit-transform: scale(0);
          transform: scale(0);
  transition: -webkit-transform 0.4s;
  transition: transform 0.4s;
  transition: transform 0.4s, -webkit-transform 0.4s;
}
.ddf__progress--complete .ddf__progress-check {
  opacity: 1;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.3s 0.4s, opacity 0s 0.4s;
}

/* circle progress animation - files list not visible */
.ddf__area .ddf__progress {
  --c-progress-bar-size: 32px;
}
.ddf__area .ddf__progress-circle-mask {
  fill: var(--color-bg-dark);
  /* use same bg color of .ddf__area element */
}

.ddf__label-end {
  display: flex;
}

@-webkit-keyframes ddf-icon-cloud {
  0%, 100% {
    -webkit-transform: translateY(0px);
            transform: translateY(0px);
  }
  50% {
    -webkit-transform: translateY(-4px);
            transform: translateY(-4px);
  }
}

@keyframes ddf-icon-cloud {
  0%, 100% {
    -webkit-transform: translateY(0px);
            transform: translateY(0px);
  }
  50% {
    -webkit-transform: translateY(-4px);
            transform: translateY(-4px);
  }
}