/* Remove Number input default Arrows */
/* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type=number] {
  -moz-appearance: textfield;
}

/*
select {
  -moz-appearance: none;
  -webkit-appearance: none;
  appearance: none;
  border: none;
}
*/


:root {
  /* Document colors */
  --text-color-light: hsl(0, 0%, 95%);
  --text-color-dark: hsl(0, 0%, 10%);
  --page-background-color: hsl(0, 0%, 10%);
  --box-background-color: hsl(0, 0%, 35%);
  --kernel-grid-element: hsl(0, 0%, 20%);
  --kernel-grid-element-hover: hsl(57, 100%, 50%);

  /* Document settings */
  --border-radius-page: 0.35rem;
}

body {
  background-color: var(--page-background-color);
  background-image: url("inspiration-geometry.png");
  font-family: Verdana, Geneva, Tahoma, sans-serif;
}

.function-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  margin-top: 2rem;
}

.box {
  border-radius: var(--border-radius-page);
  padding: 1rem;
  width: 82%;
  background-color: var(--box-background-color);
  
  box-shadow: 10px 10px 10px rgba(0, 0, 0, 0.35);
}

.box-bottom-section {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-radius: var(--border-radius-page);

  color: var(--text-color-light);
}








/* ========[output-box]======== */
/* Download section wrapper */
.download-container {
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1rem;
  padding: 1rem;
  border-radius: var(--border-radius-page);
}

/* Download Button */
.download-file-btn {
  margin: 2px 0 2px 0;
}

.runtime-text {
  display: none;
  margin: 11px 0;
  height: 18px;
}







/* ========[kernel-box]======== */
.mid-section {
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* Kernel input Area */
.kernel-box {
  width: auto;
  height: auto;
  padding: 0.75rem;
}

/* Input grid */
.grid-3x3 {
  display: grid;
  grid-gap: 8px;
  grid-template-columns: repeat(3, 52px);
  grid-template-rows: repeat(3, 52px);
}

#kernel-box-5x5 {
  display: none;
}

.grid-5x5 {
  display: grid;
  grid-gap: 6px;
  grid-template-columns: repeat(5, 44px);
  grid-template-rows: repeat(5, 44px);
}

/* Grid input elements */
.grid-element {
  background-color: var(--kernel-grid-element);
  color: var(--text-color-light);
  border-radius: var(--border-radius-page);
  border-style: none;
  text-align: center;
  font-weight: bold;
  font-size: large;
  transition: background-color .2s ease-in-out, color .2s ease-in-out;

  
}

.grid-element:hover {
  background-color: var(--kernel-grid-element-hover);
  color: var(--text-color-dark);
}

/* Kernel setting menus */
#kernel-options-box {
  align-self: flex-end;
}

.kernel-settings-box {
  width: 9rem;
  display: flex;
  flex-direction: column-reverse;
  justify-content: center;
  align-items: center;
  align-self: flex-start;
  gap: 1rem;
  margin-left: 6rem;
  margin-right: 6rem;
}

.toggle-kernel-btn {
  text-align: center;
  width: 9rem;
  background-color: var(--kernel-grid-element-hover);
}

.toggle-kernel-btn:hover {
  background-color: var(--kernel-grid-element);
}

/* Filename input */
.preview-file-name {
  align-self: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-color-dark);
  width: 100%;
  padding: 8px 20px;

  box-sizing: border-box;
  border: 2px solid var(--text-color-dark);
  border-radius: 4px;
  background-color: var(--kernel-grid-element);
  resize: none;
  color: var(--text-color-light);
}

.apply-btn {
  width: 100%;
}







/* ========[input-box]======== */
/* File upload Container */
.drop-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  margin-bottom: 1rem;
  padding: 1rem;
  border-radius: var(--border-radius-page);
  border: 2px dashed var(--kernel-grid-element);
  cursor: pointer;
  transition: background-color .2s ease-in-out, border .2s ease-in-out;
}

.drop-container:hover {
  background-color: var(--text-color-light);
  border-color: var(--text-color-dark);
}

/* File upload Button */
.input-file-btn {
  color: var(--text-color-dark);
  cursor: pointer;
  width: 100%;
}

.input-file-btn::file-selector-button {
  cursor: pointer;
  border: none;
  background-color: var(--kernel-grid-element-hover);
  padding: 12px 20px;
  border-radius: var(--border-radius-page);
  color: var(--text-color-dark);
  letter-spacing: .02rem;
  transition: all 0.2s ease;

  margin-right: 1rem;

  box-shadow: 4px 2px 8px rgba(0, 0, 0, 0.2);
}

.input-file-btn::file-selector-button:hover {
  transform: scale(1.05);
}

.input-file-btn::file-selector-button:active {
  transform: scale(0.95);
}

/* Image preview Area */
.image-preview {
  width: auto;
  min-height: 12rem;
  border: 2px solid var(--text-color-light);
  border-radius: var(--border-radius-page);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--text-color-light);
}

.image-preview__image {
  display: none;
  border-radius: var(--border-radius-page);
  width: 100%;
  height: 100%;
  cursor: pointer;    
}

/* Input RGBA Operations Toggle */
.box-bottom-section {
  flex-direction: column;
  gap: 2rem;
}

.rgba-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.grey-negative-wrapper {
  display: flex;
  gap: 0.5rem;
}





/* ========[input-box]======== */
/* Loading Icon */
.loader {
  width: 32px;
  height: 32px;
  margin: 4px 0;
  border: 5px solid var(--kernel-grid-element);
  border-bottom-color: var(--kernel-grid-element-hover);
  border-radius: 50%;
  visibility: hidden;
  box-sizing: border-box;
  animation: rotation 1.5s linear infinite;
}

@keyframes rotation {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Third Canvas */
.default-image {
  display: none;
}

/* Dividing line */
.box-spacer {
  width: 94%;
  margin: 0 auto;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  background-color: var(--kernel-grid-element);
  height: 2px;
}

/* Universal Select */
.sel-btn {
  cursor: pointer;
  border: none;
  padding: 12px;
  width: 9rem;
  border-radius: var(--border-radius-page);
  font-size: small;
  letter-spacing: .02rem;
  background-color: var(--kernel-grid-element-hover);


  box-shadow: 4px 2px 8px rgba(0, 0, 0, 0.2);
}



select::-webkit-select-dropdown {
  border-radius: 0;
}

/* Universal Button */
.btn {
  cursor: pointer;
  border: none;
  padding: 12px 20px;
  border-radius: var(--border-radius-page);
  text-decoration: none;
  text-align: center;
  font-size: small;
  letter-spacing: .02rem;
  white-space: nowrap;
  transition: all 0.2s ease;
  background-color: var(--kernel-grid-element-hover);

  box-shadow: 4px 2px 8px rgba(0, 0, 0, 0.2);
}

.btn:disabled, input:disabled+label.btn-toggle-rgba-label {
  pointer-events: none;
  background-color: var(--kernel-grid-element);  
  color: var(--box-background-color);
}

input:enabled+#label-toggle-red {
  background-color: rgb(235, 50, 50);
}

input:enabled+#label-toggle-grn {
  background-color: rgb(50, 235, 50);
}

input:enabled+#label-toggle-blu {
  background-color: rgb(50, 50, 235);
}

input:enabled+#label-toggle-alp {
  background-color: rgb(135, 135, 135);
}

.reset-btn {
  padding: 12px 12px;
}

.reload-icon {
  width: 13px;
}

.checkb-rgba, .checkb-img-edit-btn {
  display: none; /* Hide Checkboxes */
}

.btn:hover, .btn-toggle-rgba-label:hover, .btn-toggle-label:hover {
  transform: scale(1.05);
}

.btn:active, .btn-toggle-rgba-label:active, .btn-toggle-label:active {
  transform: scale(0.95);
}

#btn-toggle-red:checked ~ label[for="btn-toggle-red"],
#btn-toggle-grn:checked ~ label[for="btn-toggle-grn"],
#btn-toggle-blu:checked ~ label[for="btn-toggle-blu"],
#btn-toggle-alp:checked ~ label[for="btn-toggle-alp"],
#greyscale-btn:checked ~ label[for="greyscale-btn"],
#negative-btn:checked ~ label[for="negative-btn"] {
  background-color: var(--kernel-grid-element);
  color: var(--text-color-light);
}



/* Apply Button Color */
.apply-btn {
  background-color: rgb(0, 255, 115);
}























/* ========[responsive]======== */
/* Phone */
@media only screen and (min-width: 340px) {
  .box-bottom-section {
    padding: 1rem;
  }

  .rgba-wrapper, .grey-negative-wrapper {
    gap: 0.75rem;
  }
}

/* Phone */
@media only screen and (min-width: 670px) {
  .box-bottom-section {
    flex-direction: row;
  }

  .loader {
    margin: 0;
  }
}



/* Laptop/Tablet */
@media only screen and (min-width: 1070px) {
  .function-content {
    flex-direction: row-reverse;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin: 4rem 1rem;
    transition: ease all .5s;
  }

  .box {
    max-width: 40rem;
  }

  .input-box, .output-box, .image-preview {
    min-width: 16rem;
    transition: ease all .5s;

  }

  .image-preview {
  min-height: 18rem;
  }

  /* Kernel input Area */
  .mid-section {
    height: 31rem;
    flex-direction: column;

  }

  .kernel-box {
    align-self: center;
  }

  .download-container {
    gap: 2rem;
  }

  #input-box {
    align-self: flex-start;
  }

  .box-bottom-section {
    flex-direction: column;
  }

  .runtime-text {
    height: 18px;
  }

  .loader {
    margin: 4px 0;
  }

  .kernel-settings-box {
    margin-left: 4rem;
    margin-right: 4rem;
    flex-direction: column;
    align-items: center;
    width: 9rem;
    transition: ease all .5s;
  }
}



/* Desktop small */
@media only screen and (min-width: 1520px) {
  .function-content {
    gap: 4rem;
  }

  .kernel-box {
    padding: 1rem;
  }

  .box-bottom-section {
    flex-direction: row;
  }

  .runtime-text {
    margin: 11px 0;
  }

}



/* Desktop */
@media only screen and (min-width: 1920px) {
  .image-preview {
    min-height: 22rem;
  }

  .toggle-kernel-btn {
    width: 8rem;
  }
}