/*!
 * Visio-as-Script — Mermaid diagrams to SVG / high-res PNG / native Visio (.vsdx).
 * Author: Freddy Beltran <freddy.beltran@klyra.tech>
 * Copyright (c) 2026 Freddy Beltran, Klyra (https://klyra.tech/),
 * and the Stratos platform (https://mystratos.ai/en/)
 * SPDX-License-Identifier: MIT
 *
 * MIT License — see the LICENSE file. Provided "AS IS", without warranty or
 * liability of any kind; the project's DISCLAIMER.md restates and expands these
 * limitations and is referenced as part of this license notice. Works with the
 * official Mermaid engine (MIT License, (c) Knut Sveidqvist and Mermaid
 * contributors); Mermaid is NOT bundled in this repository.
 */
:root {
  --bg: #0f1419;
  --panel: #161b22;
  --panel-2: #1c2230;
  --border: #2a3140;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #ff7a18;        /* "fuel" orange */
  --accent-2: #ffb347;
  --ok: #3fb950;
  --err: #f85149;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  --mono: "SFMono-Regular", "Cascadia Code", Consolas, "Liberation Mono", Menlo,
    monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

/* ---- top bar ---- */
.topbar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.6rem 1rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-mark {
  font-size: 1.6rem;
  color: var(--accent);
  line-height: 1;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 1rem;
  letter-spacing: 0.2px;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.72rem;
}

.toolbar {
  display: flex;
  align-items: flex-end;
  gap: 0.9rem;
  margin-left: auto;
  flex-wrap: wrap;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.7rem;
  color: var(--muted);
}

.field input,
.field select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 0.35rem 0.5rem;
  font-size: 0.85rem;
  font-family: var(--font);
}

.field input#filename {
  width: 11ch;
}

.field input#dpi {
  width: 7ch;
}

.downloads {
  display: flex;
  gap: 0.4rem;
}

.downloads button {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 0.5rem 0.8rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.05s;
}

.downloads button:hover:not(:disabled) {
  border-color: var(--accent);
}

.downloads button:active:not(:disabled) {
  transform: translateY(1px);
}

.downloads button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #1a1206;
  font-weight: 600;
}

.downloads button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ---- panes ---- */
.panes {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(280px, 38%) 6px minmax(0, 1fr);
  min-height: 0;
}

/* draggable divider between the editor and the live preview */
.splitter {
  background: var(--border);
  cursor: col-resize;
  transition: background 0.15s;
}

.splitter:hover,
.splitter.dragging {
  background: var(--accent);
}

.pane {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}

.editor-pane {
  border-right: 1px solid var(--border);
}

.pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0.8rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--muted);
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.status {
  font-variant: small-caps;
}

.status.ok {
  color: var(--ok);
}

.status.err {
  color: var(--err);
}

#editor {
  flex: 1;
  resize: none;
  border: none;
  outline: none;
  background: #0c1017;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.5;
  padding: 1rem;
  tab-size: 2;
}

.preview-tools {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  text-transform: none;
  letter-spacing: normal;
}

.preview-tools button {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 5px;
  padding: 0.1rem 0.5rem;
  font-size: 0.78rem;
  line-height: 1.3;
  cursor: pointer;
}

.preview-tools button:hover:not(:disabled) {
  border-color: var(--accent);
}

.preview-tools button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

#zoom-level {
  min-width: 3.4rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.preview {
  flex: 1;
  overflow: auto;
  padding: 1.2rem;
  background: #ffffff;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  cursor: grab; /* left-drag pans the diagram */
  user-select: none;
}

.preview.panning {
  cursor: grabbing;
}

.preview svg {
  max-width: 100%;
  height: auto;
  flex: none; /* don't let flex shrink a zoomed diagram back to the pane width */
}

.preview .render-error {
  color: var(--err);
  font-family: var(--mono);
  font-size: 0.85rem;
  white-space: pre-wrap;
  background: #2a1416;
  border: 1px solid var(--err);
  border-radius: 6px;
  padding: 1rem;
  max-width: 100%;
}

/* ---- status bar ---- */
.statusbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.35rem 1rem;
  font-size: 0.74rem;
  color: var(--muted);
  background: var(--panel);
  border-top: 1px solid var(--border);
}

.grow {
  flex: 1;
}

.muted {
  color: var(--muted);
}

@media (max-width: 760px) {
  .panes {
    grid-template-columns: 1fr !important; /* wins over the splitter's inline style */
    grid-template-rows: 1fr 1fr;
  }
  .splitter {
    display: none;
  }
  .editor-pane {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}