/* ------------------------------------------------------------ */
/* Sequencer - page                                              */
/* ------------------------------------------------------------ */

.sequencer-page {
    display: flex;
    flex-direction: column;
    height: 100vh;
    margin: 0;
}

/* ------------------------------------------------------------ */
/* Sequencer - embed                                             */
/* ------------------------------------------------------------ */

.sequencer-embed {
    display: flex;
    flex-direction: column;
    height: 560px;
    margin: 24px 0;
}

.sequencer-embed .sequencer-canvas {
    border-radius: var(--sequencer-popup-corner-radius);
}

/* The smaller plate of an embedded diagram, for pages that opt in. */

.sequencer-embed .sequencer-name-plate {
    top: 10px;
    left: 10px;
    padding: 3px 9px;
    font-size: 10px;
}

/* The hero variant - the embed as a landing page's hero visual. */

.sequencer-embed-hero {
    height: 340px;
    margin: 0;
}

.sequencer-embed-hero .sequencer-switch {
    margin-bottom: 8px;
}

.sequencer-embed-hero .sequencer-switch-button {
    padding: 3px 10px;
    font-size: 11px;
}

/* ------------------------------------------------------------ */
/* Sequencer - diagram switch                                    */
/* ------------------------------------------------------------ */

.sequencer-switch {
    display: flex;
    gap: 8px;
    margin: 0 0 10px;
    font-family: var(--sequencer-font-family);
}

.sequencer-switch-button {
    padding: 5px 14px;
    border: 1px solid var(--sequencer-controls-border);
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
    color: var(--sequencer-controls-icon);
    background: var(--sequencer-controls-background);
}

.sequencer-switch-button-active,
.sequencer-switch-button-active:hover {
    color: var(--sequencer-number-text);
    border-color: var(--sequencer-selected-border);
    background: var(--sequencer-controls-background-hover);
}

/* ------------------------------------------------------------ */
/* Sequencer - canvas                                            */
/* ------------------------------------------------------------ */

.sequencer-canvas {
    flex: 1;
    position: relative;
    overflow: hidden;
    outline: none;
    font-family: var(--sequencer-font-family);
    background-color: var(--sequencer-canvas-background);
    background-image: radial-gradient(var(--sequencer-canvas-dot) 1px, transparent 1px);
    background-size: 14px 14px;
    cursor: grab;
}

.sequencer-canvas-panning {
    cursor: grabbing;
}

.sequencer-world {
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: 0 0;
    transition: opacity 0.08s;
}

/* ------------------------------------------------------------ */
/* Sequencer - shared                                            */
/* ------------------------------------------------------------ */

/* The selectable badges - the actor labels and the name plate. */

.sequencer-actor-label,
.sequencer-name-plate {
    font-weight: 700;
    white-space: nowrap;
    cursor: pointer;
}

/* The buttons - the canvas controls and the diagram switch pills. */

.sequencer-controls-button,
.sequencer-switch-button {
    cursor: pointer;
    transition: background-color 0.15s;
    transition-delay: 0s;
}

.sequencer-controls-button:hover,
.sequencer-switch-button:hover {
    background: var(--sequencer-controls-background-hover);
    transition-delay: 0.12s;
}

/* ------------------------------------------------------------ */
/* Sequencer - actors                                            */
/* ------------------------------------------------------------ */

.sequencer-actor-header {
    display: flex;
    align-items: center;
    position: absolute;
    top: 0;
    transform: translateX(-50%);
}

.sequencer-actor-label {
    display: inline-block;
    padding: 3px 10px;
    border: 1px solid var(--sequencer-header-badge-border);
    border-radius: 4px;
    font-size: 13px;
    color: var(--sequencer-header-text);
    box-shadow: var(--sequencer-raised-shadow-soft);
}

.sequencer-lifeline {
    position: absolute;
    background: var(--sequencer-lifeline-background);
}

.sequencer-marker {
    position: absolute;
    border-radius: 2px;
}

/* ------------------------------------------------------------ */
/* Sequencer - step panels                                       */
/* ------------------------------------------------------------ */

.sequencer-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: absolute;
    padding: 8px 16px;
    box-sizing: border-box;
    border: 1px solid var(--sequencer-panel-border);
    border-radius: var(--sequencer-panel-corner-radius);
    background: var(--sequencer-panel-background);
    box-shadow: var(--sequencer-raised-shadow);
    cursor: pointer;
}

.sequencer-panel-label {
    position: relative;
    font-size: 13px;
    font-weight: 600;
    text-align: center;
    color: var(--sequencer-panel-text);
}

/* A host page styles its own lists with !important, so these
   declarations carry it too to keep the panel lists as they are. */

.sequencer-panel-list {
    position: relative;
    margin: 6px 0 0;
    padding: 0 0 0 18px !important;
    align-self: flex-start;
    list-style: disc !important;
    font-size: 12px !important;
    line-height: 1.5 !important;
    color: var(--sequencer-panel-text) !important;
}

.sequencer-panel-list li {
    margin: 0 !important;
    padding: 0 !important;
}

/* Pages may draw their own list markers - the panel keeps the native one. */
.sequencer-panel-list li::before {
    content: none !important;
}

.sequencer-panel-number {
    position: absolute;
    top: 0;
    left: 0;
    transform: translate(-35%, -45%);
    padding: 1px 6px;
    border-radius: 3px;
    font-family: var(--sequencer-mono-font-family);
    font-size: 10px;
    font-weight: 700;
    color: var(--sequencer-number-text);
    background: var(--sequencer-number-background);
    box-shadow: var(--sequencer-raised-shadow);
}

/* ------------------------------------------------------------ */
/* Sequencer - edges                                             */
/* ------------------------------------------------------------ */

.sequencer-edges {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
}

.sequencer-arrow-path,
.sequencer-arrow-head-shape {
    fill: none;
    stroke: var(--sequencer-arrow-color);
}

/* ------------------------------------------------------------ */
/* Sequencer - name plate                                        */
/* ------------------------------------------------------------ */

.sequencer-name-plate {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 5px 14px;
    border: 1px solid var(--sequencer-plate-border);
    border-radius: 3px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--sequencer-plate-text);
    background: var(--sequencer-plate-background);
    box-shadow: var(--sequencer-plate-shadow);
}

.sequencer-name-plate:empty {
    display: none;
}

/* The minimized state hides the plate unless a page opts in. */

.sequencer-name-plate-hidden {
    display: none;
}

/* ------------------------------------------------------------ */
/* Sequencer - controls                                          */
/* ------------------------------------------------------------ */

/* The controls wear the same plate finish as the name plate. */

.sequencer-controls {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 14px;
    right: 14px;
    border: 1px solid var(--sequencer-plate-border);
    border-radius: 3px;
    background: var(--sequencer-plate-background);
    box-shadow: var(--sequencer-plate-shadow);
    overflow: hidden;
}

.sequencer-controls-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    padding: 0;
    border: none;
    color: var(--sequencer-plate-text);
    background: transparent;
}

.sequencer-controls-button + .sequencer-controls-button {
    border-top: 1px solid var(--sequencer-plate-border);
}

/* ------------------------------------------------------------ */
/* Sequencer - popup                                             */
/* ------------------------------------------------------------ */

/* Above everything on a page, the site menus included. */

.sequencer-popup-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: var(--sequencer-overlay-background);
}

.sequencer-popup {
    display: flex;
    flex-direction: column;
    width: 92vw;
    height: 88vh;
    border: 1px solid var(--sequencer-controls-border);
    border-radius: var(--sequencer-popup-corner-radius);
    background: var(--sequencer-canvas-background);
    box-shadow: var(--sequencer-popup-shadow);
    overflow: hidden;
}

.sequencer-popup .sequencer-canvas {
    flex: 1;
}

/* ------------------------------------------------------------ */
/* Sequencer - errors                                            */
/* ------------------------------------------------------------ */

.sequencer-error {
    position: absolute;
    top: 40px;
    left: 40px;
    padding: 10px 16px;
    border: 1px solid var(--sequencer-panel-border);
    border-radius: var(--sequencer-panel-corner-radius);
    font-size: 14px;
    color: var(--sequencer-header-text);
    background: var(--sequencer-panel-background);
    white-space: nowrap;
}

/* ------------------------------------------------------------ */
/* Sequencer - selection                                         */
/* ------------------------------------------------------------ */

/* Last in the file so it outweighs every element's own border rule. */

.sequencer-selected {
    border-color: var(--sequencer-selected-border);
}

/* The selection wash over a selected panel's face, under the text. */

.sequencer-panel.sequencer-selected::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: var(--sequencer-selected-wash);
}