:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --text-color-comment: #666;
    --text-color-tertiary: #338265;
    --text-color-gravity-medium:#434343;
    --text-color-gravity-low:#787878;
    
    --input-bg: #f0f0f0;
    --button-bg: #4CAF50;
    --button-text: #ffffff;

    --error-text: #aa0000;
    --warning-text: rgb(181, 112, 0);
    --success-text: #00aa00;

    --position-line-color: red;
    --costas-bg: rgb(8, 78, 255);
    --costas-bg-bits: #a9a9a9;

    --data-bg: #737373;
    --ramp-bg: #d0d0d0;

    --toggle-bg-off: #ccc;
    --toggle-bg-on: #2196F3;
    --toggle-knob-color: white;
    --toggle-disabled-bg: #ddd;
    --toggle-disabled-knob: #f5f5f5;
}

.dark-mode {
    --bg-color: #222222;
    --text-color: #f0f0f0;
    --text-color-comment: #999;
    --text-color-tertiary: #81c1a9;
    --text-color-gravity-medium: #bbb;
    --text-color-gravity-low:#aaa;

    --input-bg: #444444;
    --button-bg: #45a049;
    --button-text: #ffffff;

    --error-text: #ff4400;
    --warning-text: orange;
    --success-text: #00aa00;

    --position-line-color: white;
    --costas-bg: rgb(26, 90, 253);
    --costas-bg-bits: rgb(33, 59, 125);
    --data-bg: #837e94;
    --ramp-bg: #333333;

    --link-color: #61dafb;
    --link-hover-color: #a8e9ff;
    --link-visited-color: #bb86fc;

    --toggle-bg-off: #555;
    --toggle-bg-on: #3a8ffd;
    --toggle-knob-color: white;
    --toggle-disabled-bg: #444;
    --toggle-disabled-knob: #666;
}

body {
    font-family: 'Jost', 'Segoe UI', 'Roboto', 'Helvetica Neue', 'Arial', 'Noto Sans', sans-serif, 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji', 'Apple Color Emoji';
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    padding: 20px;
    transition: background-color 0.3s, color 0.3s;
}

.montserrat-call {
    font-family: "Montserrat", sans-serif;
    font-optical-sizing: auto;
    font-weight: 800;
    font-style: normal;
}

.righteous-regular {
    font-family: "Righteous", "McLaren", sans-serif;
    font-weight: 400;
    font-style: normal;
  }
  
.atkinson-hyperlegible-regular {
    font-family: "Atkinson Hyperlegible", sans-serif;
    font-weight: 400;
    font-style: normal;
}

.atkinson-hyperlegible-bold {
    font-family: "Atkinson Hyperlegible", sans-serif;
    font-weight: 700;
    font-style: normal;
}

.atkinson-hyperlegible-regular-italic {
    font-family: "Atkinson Hyperlegible", sans-serif;
    font-weight: 400;
    font-style: italic;
}

.atkinson-hyperlegible-bold-italic {
    font-family: "Atkinson Hyperlegible", sans-serif;
    font-weight: 700;
    font-style: italic;
}
h1, h2 {
    text-align: center;
}

.dark-mode a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.dark-mode a:hover {
    color: var(--link-hover-color);
    text-decoration: underline;
}

.dark-mode a:visited {
    color: var(--link-visited-color);
}

.btn {
  height: 40px;
  padding: 0 15px;
  border-radius: 4px;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

input[type="text"], input[type="file"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    background-color: var(--input-bg);
    border: 1px solid var(--text-color);
    color: var(--text-color);
}

button {
    /* background-color: var(--button-bg); */
    background-color: #4CAF50;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    /* margin: 4px 2px; */
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:not(:disabled):hover {
    background-color: #45a049;
}

button:disabled {
    background-color: #cccccc;
    color: #666666;
    cursor: not-allowed;
}

.dark-mode button {
    background-color: #2196F3;
}

.dark-mode button:not(:disabled):hover {
    background-color: #0b7dda;
}

.dark-mode button:disabled {
    background-color: #555555;
    color: #999999;
}
#visualization-caption {
    color: gray;
    font-size: 0.7em;
}

button:hover {
    opacity: 0.9;
}

.input-group {
  display: flex;
  align-items: stretch;
}

#message-input {
  flex-grow: 1;
  height: 40px;
  padding: 0 10px;
  border-radius: 4px 0 0 4px;
}

#encode-button {
  border-radius: 0 4px 4px 0;
}
/*
.input-group input[type="text"] {
    flex-grow: 1;
    margin-right: 10px;
}
*/

#theme-toggle {
  position: fixed;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  opacity: 0.7;
}

#theme-toggle:hover {
  opacity: 1;
}

#toggle-settings {
    background-color: transparent;
    color: #333;
    border: 1px solid #ccc;
    padding: 5px 10px;
    font-size: 14px;
    transition: all 0.3s ease;
}

#toggle-settings:hover {
    background-color: #f0f0f0;
    border-color: #999;
}

.dark-mode #toggle-settings {
    color: #ccc;
    border-color: #666;
}

.dark-mode #toggle-settings:hover {
    background-color: #444;
    border-color: #888;
}

#audio-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 15px;
}

@media (max-width: 600px) {
  #audio-controls {
    flex-direction: column;
  }
  
  #audio-controls .btn {
    width: 100%;
  }
}
.settings-toggle {
    margin-bottom: 10px;
}

#audio-settings {
    background-color: var(--input-bg);
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 10px;
}

#audio-settings.hidden {
    display: none;
}

.setting-group {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
}

.setting-group label {
    min-width: 150px;
    margin-right: 10px;
}

#base-freq-input, #sample-rate-select {
    flex-grow: 1;
}

#encode-output, #decode-output {
    background-color: var(--input-bg);
    padding: 10px;
    margin-top: 10px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

#error-output {
    background-color: var(--input-bg);
    color: var(--error-text);
}

.warning {
    color: var(--warning-text);
}

#example-messages {
    margin-top: 20px;
}

#example-messages button {
    margin-right: 10px;
    margin-bottom: 10px;
}

#audio-controls {
    margin-top: 20px;
}

#audio-controls button {
    margin-right: 10px;
}

#theme-toggle {
    position: absolute;
    top: 10px;
    right: 10px;
}

#piano-roll {
    margin-top: 20px;
    display: grid;
    gap: 1px;
    height: 100px;
    position: relative;
    background-color: var(--bg-color);
}

#piano-roll div {
    transition: background-color 0.1s;
}

#position-line {
    position: absolute;
    width: 2px;
    height: 100%;
    background-color: red;
    transition: left 0.1s;
}

body.dark-mode #piano-roll {
    background-color: #333;
}

body:not(.dark-mode) #piano-roll {
    background-color: #ddd;
}

#audio-visualization {
    margin-top: 20px;
}
#waveform-canvas {
    width: 100%;
    height: 200px;
    border: 1px solid #ccc;
}
#visualization-controls {
    margin-top: 10px;
}
#time-display {
    margin-left: 10px;
}

/* bits visualization */
.bits-grid-container {
    display: grid;
    gap: 1px;
    font-family: monospace;
    overflow-x: auto;
    white-space: nowrap;
    padding: 10px;
}

.bit, .symbol, .packed, .annotation {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 2em;
    border: 1px solid var(--border-color);
    overflow: hidden;
    padding: 2px;
    font-size: 0.9em;
    text-align: center;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bit {
    font-size: 0.6em;
}

.annotations-row3 .annotation {
    border-bottom: none;
    margin-bottom: 0;
    /* border-radius: 4px 4px 0 0; */
    background-color: var(--annotation3-bg);
}

.annotations-row4 .annotation {
    border-top: none;
    border-radius: 0 0 4px 4px;
    padding-top: 0;
    margin-top: 0;
    background-color: var(--annotation3-bg);
}

.annotations-row5 .annotation {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
    background-color: var(--annotation-bg);
}


.symbol {
    font-weight: bold;
}

.symbol.costas {
    background-color: var(--costas-bg-bits);
    color: var(--packed-color);
}

.symbol.data {
    background-color: var(--data-bg);
    color: var(--packed-color);
}

.bit-one {
    background-color: var(--bit-one-bg);
    color: var(--packed-color);

}

.bit-zero {
    background-color: var(--bit-zero-bg);
    color: var(--packed-color);
}

.packed {
    background-color: var(--packed-bg);
    color: var(--packed-color);
}

.annotation {
    background-color: var(--annotation-bg);
    color: var(--annotation-color);
    font-size: 0.8em;
}

.highlighted {
    outline: 2px solid var(--highlight-color);
    z-index: 1;
}

.toggle-container {
    margin-bottom: 10px;
}

.toggle-container button {
    margin-right: 10px;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --border-color: #555;
        --data-bg: #2c3e50;
        --costas-bg-bits: #34495e;
        --bit-one-bg: #b36954;
        --bit-zero-bg: #4da8ed;
        --packed-bg: #7f8c8d;
        --packed-color: #ecf0f1;
        --annotation-bg: #6e577d;
        --annotation3-bg: #5d577d;
        --annotation-color: #ecf0f1;
        --highlight-color: #f39c12;
    }
}

/* Light mode */
@media (prefers-color-scheme: light) {
    :root {
        --border-color: #ccc;
        --data-bg: #bdc3c7;
        --costas-bg: #ecf0f1;
        --bit-one-bg: #87c5a1;
        --bit-zero-bg: #87c5c0;
        --packed-bg: #95a5a6;
        --packed-color: #2c3e50;
        --annotation-bg: #9b59b6;
        --annotation3-bg: #7e6ab6;
        --annotation-color: #ffffff;
        --highlight-color: #f39c12;
    }
}

/* end of bits visualization */

@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    button {
        width: 100%;
        margin-bottom: 10px;
    }

    #theme-toggle {
        position: static;
        display: block;
        margin-bottom: 20px;
    }
}

/***** output boxes *****/

:root {
/*    --bg-color: #f4f4f4; */
/*    --text-color: #333; */
    --box-bg: #fff;
    --box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --header-bg: #4a4a4a;
    --header-color: #fff;
    --value-bg: #f9f9f9;
    --check-ok-bg: #d4edda;
    --check-ok-color: #155724;
    --check-error-bg: #f8d7da;
    --check-error-color: #721c24;
}

.dark-mode {
/*    --bg-color: #1a1a1a; */
/*    --text-color: #e0e0e0; */
    --box-bg: #2c2c2c;
    --box-shadow: 0 2px 4px rgba(255,255,255,0.1);
    --header-bg: #3a3a3a;
    --header-color: #fff;
    --value-bg: #383838;
    --check-ok-bg: #1e4620;
    --check-ok-color: #9be9a8;
    --check-error-bg: #4c1d1d;
    --check-error-color: #f8d7da;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

.output {
    white-space: normal;
}

.output-box {
    background-color: var(--box-bg);
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    margin-top: 35px;
    margin-bottom: 20px;
    overflow: hidden;
    white-space: normal;

}

.output-box h2 {
    background-color: var(--header-bg);
    color: var(--header-color);
    margin: 0;
    padding: 10px 15px;
    font-size: 18px;
    white-space: normal;
}

/* .output-box .output-value */
.output-box pre,
.output-box code {
    white-space: pre-wrap;
}

.output-subheading {
    background-color: var(--header-bg);
    color: var(--header-color);
    margin: 10px -10px 5px;
    padding: 8px 15px;
    font-size: 16px;
    grid-column: 1 / -1;
}

.output-content {
    padding: 10px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 5px 10px;
}

.output-row {
    margin-bottom: 5px;
    display: contents;
    grid-column: 1 / -1;
}

.output-row.plain-text {
    /* grid-column: 1 / -1; */
    padding: 5px 0;
}

.output-row.plain-text .output-value {
    background-color: transparent;
    padding: 0;
    font-family: inherit;
    white-space: normal;
    word-break: normal;
}

.output-label {
    /* font-weight: bold; */
    margin-bottom: 2px;
    padding: 5px 0;
}

.output-value {
    background-color: var(--value-bg);
    padding: 8px;
    border-radius: 4px;
}

.output-data {
    font-family: monospace;
    white-space: pre-wrap;  /* todo */
    /* white-space: break-spaces;  TODO */ 
    word-break: break-all;
}

.output-data-normal {
    /* use regular defaults */
    font-family: monospace;
    white-space: normal;
    word-break: normal; 
}

.output-field,
.output-call {
    font-size: 1.1em;
    font-family: "Atkinson Hyperlegible", sans-serif;
    font-optical-sizing: auto;
    font-weight: 700;
    font-style: normal;
    letter-spacing: 0.05em;
    padding-right: 8px;
    
}

.output-hash {
    font-size: 0.8em;
    letter-spacing: 0.06em;
    font-family: "Righteous", "McLaren", "IBM Plex Serif", sans-serif;
    font-weight: 400;
    font-style: normal;
}

.call-highlighter { /* modifies .output-call and .output-hash */
    text-decoration: underline;
    text-decoration-color: var(--text-color-tertiary);
    text-decoration-thickness: 0.12em;
    text-underline-offset: 0.4em;
    text-decoration-skip-ink: none;
}

.gravity-high {
    color: var(--text-color);
}
.gravity-medium {
    color: var(--text-color-gravity-medium);
}
.gravity-low {
    color: var(--text-color-gravity-low);
}

.output-country {
    font-size: 0.8em;
    font-family: "Montserrat", "Roboto", sans-serif;
    font-optical-sizing: auto;
    font-weight: 900;
    font-style: italic;
    letter-spacing: 0.02em;
    padding-right: 8px;
    font-variant-caps: all-small-caps;
}

.checks {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 5px;
    white-space: normal;
}

.check-result {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85em;
    font-weight: bold;
    text-transform: uppercase;
    white-space: normal;
}

.check-ok {
    background-color: #d4edda;
    color: #155724;
}

.check-error {
    background-color: #f8d7da;
    color: #721c24;
}

.check-warning {
    background-color: #f8d7da;
    color: #ad6e0f;
}

.check-neutral {
    background-color: #e2e3e5;
    color: #383d41;
}

.check-disabled {
    background-color: #e9ecef;
    color: #6c757d;
    opacity: 0.7;
}

.dark-mode .check-ok {
    background-color: #148541;
    color: #8fd19e;
}

.dark-mode .check-error {
    background-color: #3e1515;
    color: #ea8c8c;
}

.dark-mode .check-warning {
    background-color: #5f3b10;
    color: #ea8c8c;
}

.dark-mode .check-neutral {
    background-color: #2a2d2f;
    color: #b9bbbe;
}

.dark-mode .check-disabled {
    background-color: #2a2d2f;
    color: #a1a5a9;
}

.check-icon {
    margin-right: 4px;
}

.highlighted-error {
    background-color: #ffcccc;
    color: #cc0000;
    font-weight: bold;
}

.dark-mode .highlighted-error {
    background-color: #4c1d1d;
    color: #ff6666;
}


.highlighted-lesser-error {
    background-color: #ffe6cc;
    color: #cc6600;
    font-weight: bold;
}

.dark-mode .highlighted-lesser-error {
    background-color: #4c3d1d;
    color: #ffa366;
}

.output-comment {
    font-size: 0.7em;
    color: #666;
    margin-top: 2px;
    grid-column: 2;
}

.dark-mode .output-comment {
    color: #5e5e5e;
}

.highlighted-corrected {
    background-color: #ccffcc;
    color: #006600;
    font-weight: bold;
}

.dark-mode .highlighted-corrected {
    background-color: #1d4c1d;
    color: #66ff66;
}

/* Output message fields */


.output-row-field {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 5px 10px;
    margin-bottom: 10px;
    padding: 5px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.output-label-field {
    grid-column: 1 / -1;
    font-weight: bold;
    font-size: 1.1em;
}

.output-sublabel {
    font-size: 0.9em;
    color: var(--text-color-comment);
    font-weight: normal;
}

.output-value-field {
    grid-column: 1 / -1;
    background-color: var(--value-bg);
    padding: 5px;
    border-radius: 4px;
    font-family: monospace;
    word-break: break-all;
}

.output-description {
    grid-column: 1 / -1;
    font-size: 0.9em;
    color: var(--text-color-comment);
}

.output-metadata {
    grid-column: 1 / -1;
    font-size: 0.8em;
    color: var(--text-color-tertiary);
    margin-top: 5px;
}

.output-metadata-item {
    display: inline-block;
    margin-right: 10px;
}

.output-comment-field {
    grid-column: 1 / -1;
    font-size: 0.8em;
    color: var(--text-color-comment);
    margin-top: 5px;
    font-style: italic;
}

.output-raw-values {
    font-size: 0.6em;
    color: var(--text-color-comment);
    margin-top: 5px;
    font-weight: bold;
}

/* toggle switches */

.toggle-switch {
    display: flex;
    align-items: center;
    gap: 10px;
}

.toggle-switch__track {
    position: relative;
    display: inline-block;
    width: 51px;
    height: 31px;
}

.toggle-switch__input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch__slider {
    position: absolute;
    /* cursor: pointer; */
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--toggle-bg-off);
    transition: .4s;
    border-radius: 34px;
}

.toggle-switch__slider:before {
    position: absolute;
    content: "";
    height: 27px;
    width: 27px;
    left: 2px;
    bottom: 2px;
    background-color: var(--toggle-knob-color);
    transition: .4s;
    border-radius: 50%;
}

.toggle-switch__input:checked + .toggle-switch__slider {
    background-color: var(--toggle-bg-on);
}

.toggle-switch__input:checked + .toggle-switch__slider:before {
    transform: translateX(20px);
}

.toggle-switch__label {
    font-size: 14px;
}

.toggle-switch__input:disabled + .toggle-switch__slider {
    background-color: var(--toggle-disabled-bg);
    /* cursor: not-allowed; */
}

.toggle-switch__input:disabled + .toggle-switch__slider:before {
    background-color: var(--toggle-disabled-knob);
}

.toggle-switch__input:checked:disabled + .toggle-switch__slider {
    background-color: var(--toggle-bg-on);
    /* opacity: 0.5; */
}

.toggle-switch--disabled .toggle-switch__label {
    /* opacity: 0.5; */
}

/* tabs */

/* tabs */
#tab-container {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 10px;
    gap: 5px;
}

.tab-button {
    padding: 8px 15px;
    border: 1px solid var(--text-color);
    background-color: var(--input-bg);
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
    border-radius: 4px;
    font-size: 14px;
    position: relative;
}

.tab-button:hover {
    background-color: var(--button-bg);
    color: var(--button-text);
}

.tab-button.active {
    background-color: var(--button-bg);
    color: var(--button-text);
    border-color: var(--button-bg);
}

/* Error tab styles */
.tab-button.error {
    border-color: var(--error-text);
}

.tab-button.error::after {
    content: '!';
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--error-text);
    color: var(--button-text);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

.tab-button.error:hover,
.tab-button.error.active {
    background-color: var(--error-text);
    color: var(--button-text);
}

.tab-button.warning {
    border-color: var(--warning-text);
}

.tab-button.warning::after {
    content: '!';
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--warning-text);
    color: var(--button-text);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

.tab-button.warning:hover,
.tab-button.warning.active {
    background-color: var(--warning-text);
    color: var(--button-text);
}

.tab-button.equal {
    background-color: rgba(76, 175, 80, 0.3);
    border-color: rgba(76, 175, 80, 0.5);
}

.tab-button.equal:hover {
    background-color: rgba(76, 175, 80, 0.5);
}

.tab-button.equal.active {
    background-color: var(--button-bg);
    border-color: var(--button-bg);
    color: var(--button-text);
}

.dark-mode .tab-button.equal {
    background-color: rgba(76, 175, 80, 0.2);
    border-color: rgba(76, 175, 80, 0.4);
}

.dark-mode .tab-button.equal:hover {
    background-color: rgba(76, 175, 80, 0.4);
}
.dark-mode .tab-button {
    border-color: var(--text-color);
    background-color: var(--input-bg);
    color: var(--text-color);
}

.dark-mode .tab-button:hover {
    background-color: var(--button-bg);
    color: var(--button-text);
}

.dark-mode .tab-button.active {
    background-color: var(--button-bg);
    color: var(--button-text);
    border-color: var(--button-bg);
}

.dark-mode .tab-button.error,
.dark-mode .tab-button.warning {
    border-color: inherit;
}

@media (max-width: 600px) {
    .tab-button {
        flex: 1 0 auto;
        text-align: center;
    }
}