body {
    margin: 0;
    overflow: hidden;
    font-family: 'Mali';
    box-sizing: border-box;
    position: relative;
}

#toolbar {
    position: fixed;
    top: 10px;
    left: 10px;
    padding: 0px 10px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    z-index: 10;
    display: flex;
    gap: 4px;
    background-color: #666666;
}

#toolbar button {
    border-radius: 3px;
    font-size: 14px;
    color: white;
    border: none;
    background-color: transparent;
    padding: 4px 6px;
}

#toolbar button:hover {
    background-color: #444444;
}

#toolbar .break {
    height: 70%;
    width: 2px;
    border-radius: 1px;
    background-color: #999999;
}

#viewer {
    display: none;
    opacity: 1;
}

#viewer.show {
    display: none; 
}

.canvasGroup {
    width: 100vw;
    height: 100vh;
    position: relative;
}

.canvas {
    display: block;
    touch-action: none; 
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: default;
}

#liveCanvas {
    z-index: 3; 
}
#drawCanvas {
    z-index: 2;
}
#backgroundCanvas {
    z-index: 1;
    pointer-events: none; /* Prevent interaction with the background canvas */
}

#scaleIndicator {
    color: #ffffff;
    padding: 4px 6px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    z-index: 10;
    user-select: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

#scaleIndicator:hover {
    background-color: #444444;
}

/* ------------tool box style -------------- */
.penTools {
    position: absolute;
    top: 220px;
    right: 300px;
    width: 80px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    z-index: 77777;
}
.penTools.show {
    opacity: 1;
    pointer-events: auto;
}
.penTools.show .nav-content span {
    pointer-events: auto; /* 🔥 Allow interaction with icons */
}
.nav-content span a {
    transition: background-color 0.3s ease, transform 0.3s ease;
}
.nav-content span a:hover {
    background-color: lightblue;
    transform: scale(1.1) rotate(45deg) ; /* 🔥 Optional: scale up on hover */
    color: white; /* 🔥 Optional: change text/icon color */
}
.nav-content span a.hovered {
    background-color: lightblue;
    transform: scale(1.1) rotate(45deg);
    color: white;
}
.penTools .nav-content {
    display: flex;
    align-items: center;
    justify-content: center;
    transform: rotate(-45deg);
}
.nav-content .toggle-btn,
.nav-content span a {
    height: 50px;
    width: 50px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}
.nav-content .toggle-btn {
    font-size: 35px;
    color: #0e2431;
    z-index: 100;
    cursor: pointer;
    transform: rotate(-225deg);
    transition: all 0.3s ease;
    opacity: 1;
    /* Default visible */
}
.nav-content .toggle-btn {
    transition: background-color 0.7s ease;
}
.nav-content .toggle-btn.hidden {
    opacity: 0;
    /* Hidden when closed */
    pointer-events: none;
    /* Prevent interaction */
}
.nav-content .toggle-btn.countdown {
    background-color: #333333;
}


.penTools.open .toggle-btn {
    transform: rotate(0deg);
}
.nav-content span {
    position: absolute;
    transition: all 0.3s ease;
    opacity: 0;
}
.penTools.open .nav-content span {
    transform: rotate(calc(var(--i) * (360deg/8))) translateY(90px);
    opacity: 1;
}
.nav-content span a {
    text-decoration: none;
    transform: rotate(45deg);
}
.nav-content span a i {
    font-size: 24px;
    color: #0e2431;
    transform: rotate(calc(var(--i) * (360deg/ -8)));
    opacity: 0.8;
    transition: 0.1s;
    /* for label */
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: column;
    justify-content: center;
}
.nav-content span a i::after {
    content: attr(data-label);
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 14px;
    color: white;
    background-color: 'rgba(32,31,30, 0.7)';
    padding: 2px 5px;
    border-radius: 3px;
    white-space: nowrap;
}
.nav-content span a:hover i {
    opacity: 1;
}


/* ------------note navbar style -------------- */
#openNavBtn {
    position: fixed;
    top: 10px;
    right: 10px;
    z-index: 1001;
    padding: 0px 10px;
    height: 36px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #666666;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

#openSettingBtn {
    position: fixed;
    top: 20px;
    right: 110px;
    z-index: 1001;
    padding: 9px 10px; 
    background-color: #666666;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#notenavbar {
    position: fixed;
    top: 0;
    right: -100%;
    /* right: 0; */
    width: 500px;
    height: 100vh;
    background: #ffffff;
    box-shadow: -4px 0 10px rgba(0, 0, 0, 0.1);
    border-left: 1px solid #e0e0e0;
    z-index: 1000;
    transition: right 0.3s ease;
    display: flex;
    flex-direction: column;
    padding: 10px;
}

#notenavbar.open {
    right: 0;
}
.buttonGroup {
    width: 430px;
    display: flex;
    flex-direction: row;
    margin-bottom: 10px;
}
.buttonGroup #driveGroup{
    display: flex;
    flex-direction: row;
    gap: 4px;
    width: 340px;
}
.buttonGroup #functionGroup{
    display: flex;
    flex-direction: row;
    justify-content: center;
    gap: 4px;
    width: 90px;
}
.buttonGroup button {
    background-color: whitesmoke;
    color: black;
    border: 2px lightgray solid;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    height: 36px;
}
#functionGroup button{
    width: 39px;
    margin: 0;
    padding: 0;
    border: 0px;
    display: flex;
    color: white;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #666666;
}
#driveGroup button{
    width: 164px;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}



#notenavbar .shelf {
    display: flex;
    flex-direction: row;
    justify-content: center;
    width: 100%;
    height: 100%;
    margin-bottom: 10px;
    padding: 0;
    margin: 0;
}
.shelf .folder {
    width: 160px;
    height: 100%;
    gap: 0px;
    display: flex;
    flex-direction: column;
    gap: 0px;
}
.shelf .folder-button {
    background-color: #666666;
    width: 100%;
    height: 36px;
    margin: 0;
    font-size: 14px;
    border: solid 2px #444444;
    border-radius: 6px;
    box-sizing: border-box;
    margin-bottom: -2px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.shelf .folder-button::after {
  content: "";
  width: 12px;             /* diameter of the circle */
  height: 12px;
  background-color: #ffffff; /* or any color */
  border-radius: 50%;       /* distance from the edge to the circle's edge */
  flex-shrink: 0;
}

.shelf .folder-button:hover p{
    color: black;
    background-color: #e0e8ff;
}
.folder-button.selected p{
    color: black;
    background-color: #e0e8ff;
}
.folder-button p {
    width: 122px;
    height: 64%;
    display: flex;
    justify-content: center;
    font-family: 'Mali';
    align-items: center;
    background-color: #f5f5f5;
    border-radius: 8px;
}
.folder i{
    font-size: 20px;
    color: white;
}
.shelf .notes {
    width: 330px;
    height: 97%;
    margin-right: 8px;
    border: #d3d3d3 solid 2px;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    justify-content: start;
    align-items: center;
}
.notes #menubar {
    margin: 10px 0;
    width: 90%;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    gap: 4px;
    background-color: #666666;
}
#menubar button {
    border-radius: 3px;
    font-size: 14px;
    color: white;
    border: none;
    background-color: transparent;
    padding: 4px 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}
#menubar button:hover {
    background-color: #444444;
}
#menubar .break {
    height: 70%;
    width: 2px;
    border-radius: 1px;
    background-color: #999999;
}

#note-list {
    width: 90%;
    overflow-y: auto;
}
#note-list button:hover {
    background-color: #e0e8ff;
}

/* Button in button (action for each) note */
.note-button {
    position: relative;
    padding: 5px 5px;
    width: 100%;
    font-size: 14px;
    position: relative;
    z-index: 1;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    margin: 0;
    background-color: transparent;
    border: none;
    font-family: 'Mali';
    border-radius: 6px;
    /* border: 2px lightgray dashed; */
}
.note-button.noteSelected {
    background-color: #e0e8ff;
    border: #d3d3d3 solid 2px;
}
.note-button::after {
    position: absolute;
    content: "....................................................................................................................................................";
    flex-grow: 1;
    margin-left: 2px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: clip;
}

.subnote-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: end; 
    position: relative;
    padding: 0;
    margin: 0;
}

.delete-button,
.new-button {
    position: absolute;
    background: transparent;
    border-radius: 2px;
    height: fit-content;
    border: none;
    cursor: pointer;
    font-size: 16px;
    z-index: 2;
    color: black
}

.subnote-container .delete-button {
    position: absolute;
    top: 2px;
    right: 0px;
}

.folder-container .new-button {
    top: 10px;
    right: 4px;
    font-size: 20px;
}

.subfolder-note {
    background-color: #ffe8a1;
    font-style: italic;
    font-size: 0.9em;
}
.subfolder-note-list {
    margin-left: 1.5em;
    border-left: 2px dashed #ccc;
    padding-left: 1em;
}

.folder-btn {
    font-size: 20px;
    font-weight: bold;
    background-color: white;
    text-align: left;
    border: none;
    border-bottom: 2px solid gray;
}
.folder-btn i {
    transition: all 0.3s;
}

.hidden {
    display: none;
}
.settings-wrapper.show {
    display: block;
}
button#export {
    margin-bottom: 30px;
}

/* -----------------Setting page------------------------------ */
.settings-wrapper {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    max-width: 1280px;
    width: 80vw;
    margin: 30px auto;
    margin-top: 60px;
    padding: 30px;
    background-color: #3a3a3a;
    border-radius: 20px;
    height: 80vh;
    overflow: auto;
    z-index: 1000;
    color: #f1f1f1;
    display: none;
}

.settings-wrapper::-webkit-scrollbar {
    width: 10px;
}

.settings-wrapper::-webkit-scrollbar-track {
    background: transparent;  /* Transparent track (background) */
}

.settings-wrapper::-webkit-scrollbar-thumb {
    background-color: rgba(150, 150, 150, 0.5); /* Thumb with opacity */
    border-radius: 8px;
    border: 2px solid transparent; /* Adds spacing for thumb edge */
    background-clip: padding-box;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #fff;
}

label {
    display: block;
    font-size: 0.95rem;
    margin-bottom: 6px;
}

select,
input[type="color"],
input[type="range"] {
    width: 100%;
    padding: 5px;
    background-color: #444;
    border: 1px solid #666;
    color: #fff;
    border-radius: 6px;
    max-width: 350px;
}

.grid-section,
.modifier-section {
    margin-bottom: 40px;
}

.grid-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

.grid-section label {
    margin-top: 15px;
}

.grid-style-options button {
    background-color: #444;
    color: #fff;
    padding: 6px 12px;
    border: 1px solid #777;
    border-radius: 8px;
    cursor: pointer;
}

.grid-style-options button.active {
    background-color: #666;
}

.range-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.range-row span {
    font-size: 0.9rem;
}

.modifier-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, 300px); 
    gap: 20px;
    justify-content: center;
}

.modifier-card {
    background-color: #2b2b2b;
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.4);
    position: relative;
}

.modifier-title {
    font-weight: bold;
    margin-bottom: 12px;
}

.toggle-switch {
    position: relative;
    width: 40px;
    height: 22px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0;
    right: 0; bottom: 0;
    background-color: #555;
    border-radius: 22px;
    transition: 0.3s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

.toggle-switch input:checked + .slider {
    background-color: #2196F3;
}

.toggle-switch input:checked + .slider:before {
    transform: translateX(18px);
}

.modifier-footer {
    margin-top: 10px;
}

/* ----------scroll bar ---------------- */
#scrollbar {
    position: absolute;
    right: 5px;
    top: 0;
    height: 86vh;
    width: 8px;
    margin-top: 7vh;
    background: #eee;
    border-radius: 4px;
    z-index: 10000;
    display: "none";
}
#thumb {
    width: 100%;
    height: 0px;
    background: #888;
    border-radius: 4px;
    position: absolute;
    top: 0;
}

/* -------------------Toc button ------------- */
#tocDropdown {
  position: absolute;
  top: 48px; 
  left: 10px; 
  max-width: 50vw;
  max-height: 50vh;
  overflow-x: auto;
  background: #1e1e1e;
  color: white;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.35);
  display: none;
  z-index: 9999;
}

#tocDropdown div {
  cursor: pointer;
  white-space: nowrap;
}

#tocDropdown div:hover {
  background: rgba(255,255,255,0.15);
}