/*
 * Save, open, drafts and the Markdown export view (issues #76, #73)
 * =================================================================
 * Elements created by public/js/persistence.js. Every colour, radius and
 * font comes from public/css/tokens.css (defined on :root, so the dialogs
 * and notice look the same in plain and Write_On mode, like the shortcut
 * reference). Design notes: docs/design/persistence.md
 */

/* ---- Dirty indicator: a dot on the save controls ---- */

.te-chrome-save,
.te-files-toolbar sl-button {
    position: relative;
}

.te-chrome-save.te-dirty::after,
.te-files-toolbar sl-button.te-dirty::after {
    content: "";
    position: absolute;
    top: 0.125rem;
    right: 0.125rem;
    width: 0.375rem;
    height: 0.375rem;
    border-radius: 50%;
    background: var(--te-color-accent);
    box-shadow: 0 0 0 2px var(--te-color-bg);
    pointer-events: none;
}

/* Text kept for screen readers only (the toolbar buttons are icons). */
.te-files-sr {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
}

/* ---- Notice: draft restore and file errors (non-blocking) ---- */

.te-files-notice {
    position: fixed;
    z-index: 30;
    left: 50%;
    bottom: 4rem;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: min(var(--te-measure), calc(100vw - 2rem));
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--te-color-panel-border);
    border-radius: var(--te-radius-popover);
    background: var(--te-color-popover);
    color: var(--te-color-text);
    font-family: var(--te-font-mono);
    font-size: 0.8125rem;
    line-height: 1.5;
    box-shadow: 0 0.5rem 1.5rem rgba(10, 13, 28, 0.45);
}

.te-files-notice[hidden] {
    display: none;
}

.te-files-notice[data-kind="error"] .te-files-notice-text {
    color: var(--te-color-text-dim);
}

.te-files-notice-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.te-files-notice-button,
.te-files-button {
    padding: 0.25rem 0.625rem;
    border: 1px solid var(--te-color-panel-border);
    border-radius: 4px;
    background: transparent;
    color: var(--te-color-text);
    font: inherit;
    cursor: pointer;
}

.te-files-notice-button:first-child,
.te-files-primary {
    border-color: var(--te-color-accent);
    color: var(--te-color-accent);
}

.te-files-notice-button:hover,
.te-files-button:hover {
    background: var(--te-color-popover-hover);
}

.te-files-notice-button:focus-visible,
.te-files-button:focus-visible,
.te-files-markdown-text:focus-visible {
    outline: 2px solid var(--te-color-accent);
    outline-offset: 2px;
}

.te-files-button i {
    margin-right: 0.375rem;
}

/* ---- Dialogs: unsaved changes and the Markdown export (native <dialog>) ---- */

.te-files-dialog {
    width: min(26rem, calc(100vw - 2rem));
    padding: 1rem 1.25rem 1.25rem;
    border: 1px solid var(--te-color-panel-border);
    border-radius: var(--te-radius-popover);
    background: var(--te-color-popover);
    color: var(--te-color-text);
    font-family: var(--te-font-mono);
    font-size: 0.8125rem;
    line-height: 1.5;
    color-scheme: dark;
}

.te-files-markdown,
.te-files-graph {
    width: min(48rem, calc(100vw - 2rem));
}

.te-files-dialog::backdrop {
    background: rgba(10, 13, 28, 0.6);
}

.te-files-dialog-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
}

.te-files-dialog h2 {
    margin: 0;
    font-family: var(--te-font-display);
    font-size: 1.5rem;
    font-weight: 400;
}

.te-files-dialog-text {
    margin: 0.5rem 0 0.75rem;
    color: var(--te-color-text-dim);
}

.te-files-close {
    padding: 0 0.25rem;
    border: none;
    font-size: 1.25rem;
    color: var(--te-color-text-dim);
}

.te-files-markdown-text {
    box-sizing: border-box;
    display: block;
    width: 100%;
    /* Grows with the export (where field-sizing is supported), between a
       comfortable minimum and most of the viewport. */
    field-sizing: content;
    min-height: 10rem;
    max-height: min(60vh, 32rem);
    padding: 0.75rem;
    border: 1px solid var(--te-color-panel-border);
    border-radius: 4px;
    background: var(--te-color-panel);
    color: var(--te-color-text);
    font-family: var(--te-font-mono);
    font-size: 0.8125rem;
    line-height: var(--te-line-height);
    resize: vertical;
}

.te-files-dialog-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.te-files-status {
    flex: 1;
    color: var(--te-color-text-dim);
}

@media (max-width: 40rem) {
    .te-files-notice {
        flex-direction: column;
        align-items: stretch;
        bottom: 3.5rem;
    }
}

/* Readable concept relationships from the current document's actual graph. */
.te-files-concepts {
    list-style: none;
    padding: 0;
    margin: 1.25rem 0;
}
.te-files-concepts li {
    padding: 0.8rem 1rem;
    margin: 0.5rem 0;
    border: 1px solid var(--te-color-panel-border);
    border-radius: 0.5rem;
    font-size: 1.3rem;
    overflow-wrap: anywhere;
}
.te-files-synonym-definitions {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    padding: 0.75rem;
    font-size: 0.9rem;
}