/* The studio shell: grid layout, panes, tabs, hint bar, banners (shell.js). */

/* ---------------------------------------------------------------- layout */

.studio {
  --ease-pane: cubic-bezier(0.22, 0.8, 0.26, 1);
  display: grid;
  grid-template-rows: 60px minmax(0, 1fr) auto 26px;
  grid-template-columns: var(--browser-col, var(--browser-w)) minmax(0, 1fr) var(--agent-col, var(--agent-w));
  grid-template-areas: "top top top" "browser work agent" "keys keys keys" "hint hint hint";
  height: 100%;
  transition: grid-template-columns 0.28s var(--ease-pane);
}
.studio.dragging,
.studio.dragging .pane-dock {
  transition: none;
}

.topbar {
  grid-area: top;
}
.side-browser {
  grid-area: browser;
}
.workspace {
  grid-area: work;
}
.side-agent {
  grid-area: agent;
}
.hintbar {
  grid-area: hint;
}
.keyboard {
  grid-area: keys;
}
.navbar {
  grid-area: nav;
}

/* ---------------------------------------------------------------- side panels (panes.js) */

/* The column animates and clips; the panel keeps its own width so its
   content (the terminal) is not refitted while it slides or hides. */
.side {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}
.side > .browser,
.side > .agent {
  position: absolute;
  top: 0;
  bottom: 0;
}
.side > .browser {
  left: 0;
  width: max(100%, var(--browser-w));
}
.side > .agent {
  right: 0;
  width: var(--agent-w);
  box-shadow: none;
}
.side-browser {
  background: var(--lacquer);
}
.side-agent {
  background: #0b0a0d;
  box-shadow: -12px 0 30px rgba(0, 0, 0, 0.5);
}
.side.min > .browser,
.side.min > .agent {
  visibility: hidden;
}
.side-agent .agent-resize {
  left: 0;
}
/* A narrow agent panel shrinks its agent picker, never its window buttons. */
.side-agent .agent-head > * {
  flex-shrink: 0;
}
.side-agent .agent-head > .select {
  flex: 0 4 auto;
  min-width: 64px;
}
.side-agent .agent-head > .agent-title {
  flex: 0 1 auto;
  min-width: 76px;
  overflow: hidden;
  white-space: nowrap;
}
.side-agent .agent-head > .spacer {
  flex: 1 1 0;
}
.side > .agent {
  container-type: inline-size;
}
@container (max-width: 400px) {
  .side-agent .agent-head > .agent-mark {
    display: none;
  }
  .side-agent .agent-head > .agent-title {
    min-width: 0;
  }
}
.side.min .agent-resize {
  display: none;
}

/* A maximized browser lays its lists out in columns and scrolls as a whole. */
.side-browser.max .browser {
  overflow-y: auto;
}
.side-browser.max .panel-head {
  flex: none;
  position: sticky;
  top: 0;
  z-index: 2;
  background: linear-gradient(180deg, #1a171e, #141217);
}
.side-browser.max .browser-body {
  flex: none;
  overflow: visible;
  column-width: 250px;
  column-gap: 18px;
  column-rule: 1px solid var(--line);
  padding: 2px 6px 24px;
}
.side-browser.max .b-section {
  break-inside: avoid;
  padding-top: 1px;
}

/* The rail a minimized side panel collapses to. */
.rail {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 7px 0 14px;
  cursor: pointer;
  background: linear-gradient(180deg, #17141b, #0d0b10);
  transition: background 0.2s;
}
.side.min .rail {
  display: flex;
  animation: rail-in 0.32s var(--ease-pane) both;
}
@keyframes rail-in {
  from {
    opacity: 0;
  }
}
.rail-browser {
  border-right: 1px solid var(--line);
}
.rail-agent {
  border-left: 1px solid var(--line-2);
}
.rail:hover {
  background: linear-gradient(180deg, #201b24, #110f14);
}
.rail .winctl {
  margin: 0;
}
.rail-mark {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  flex: none;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: radial-gradient(circle at 35% 30%, #2e2618, #0f0c08);
  color: var(--gold);
}
.rail-mark .glyph {
  width: 12px;
  height: 12px;
}
.rail-agent .rail-mark {
  border-color: var(--line-3);
  color: var(--gold-hi);
  box-shadow: var(--glow);
}
.rail-mark .glyph-spark path {
  fill: currentColor;
  stroke: none;
}
.rail-label {
  writing-mode: vertical-rl;
  font: 600 14px/1 var(--serif);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--champagne);
  transition:
    color 0.15s,
    text-shadow 0.15s;
}
.rail-agent .rail-label {
  font-size: 18px;
  font-style: italic;
  letter-spacing: 0.06em;
  text-transform: none;
  color: var(--gold-hi);
}
.rail:hover .rail-label {
  color: var(--gold-hi);
  text-shadow: 0 0 12px rgba(212, 175, 55, 0.5);
}
.rail-line {
  flex: 1;
  width: 1px;
  min-height: 20px;
  background: linear-gradient(180deg, var(--line-3), transparent);
}

/* ---------------------------------------------------------------- window buttons (panes.js) */

.winctl {
  display: inline-flex;
  align-items: center;
  gap: 1px;
  flex: none;
  margin-left: 2px;
  padding: 2px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(6, 5, 8, 0.55);
  box-shadow:
    inset 0 1px 2px rgba(0, 0, 0, 0.6),
    0 1px 0 rgba(255, 240, 200, 0.03);
}
.winbtn {
  display: grid;
  place-items: center;
  width: 22px;
  height: 20px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--gold);
  opacity: 0.85;
  transition:
    color 0.15s,
    background 0.15s,
    border-color 0.15s,
    box-shadow 0.15s,
    opacity 0.15s;
}
.winbtn .glyph {
  width: 14px;
  height: 14px;
  stroke-width: 1.6;
}
.winbtn:hover {
  opacity: 1;
  color: var(--gold-hi);
  background: rgba(212, 175, 55, 0.09);
  border-color: var(--line-2);
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.28);
}
.winbtn:active {
  transform: translateY(0.5px);
}
.winbtn:focus-visible {
  outline: 1px solid var(--line-3);
  outline-offset: 1px;
}
.panel-head .winctl {
  margin-left: auto;
}

/* ---------------------------------------------------------------- workspace */

.workspace {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--ob-1);
}
.pane {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  position: relative;
}
.pane-top {
  flex: 1 1 0;
  min-height: 38px;
}
.pane-dock {
  flex: 0 1 var(--dock-h);
  min-height: 39px;
  border-top: 1px solid var(--line-2);
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.45);
  transition: flex-basis 0.28s var(--ease-pane);
}
.splitter {
  height: 5px;
  margin: -3px 0;
  cursor: ns-resize;
  position: relative;
  z-index: 3;
}
.splitter:hover {
  background: linear-gradient(180deg, transparent, rgba(212, 175, 55, 0.35), transparent);
}
.splitter.off {
  display: none;
}

/* A minimized workspace pane keeps only its tab strip. */
.pane.min {
  overflow: hidden;
}
.pane.min > .dock-body {
  visibility: hidden;
}
.pane.min > .tabs {
  border-bottom-color: transparent;
}
/* A folded pane's tools are out of reach anyway; keep its strip calm. */
.pane.min > .tabs > .tools {
  visibility: hidden;
}
.pane-top.min > .tabs .tab {
  cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
  .studio,
  .pane-dock {
    transition: none;
  }
  .side.min .rail {
    animation: none;
  }
}

.tabs {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 38px;
  padding: 0 10px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #141117, #0e0c11);
}
.tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 31px;
  padding: 0 14px;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 9px 9px 0 0;
  background: transparent;
  color: var(--muted);
  font: 600 14px/1 var(--serif);
  letter-spacing: 0.08em;
  cursor: pointer;
}
.tab .glyph {
  width: 14px;
  height: 14px;
}
.tab kbd {
  font: 500 9px/1 var(--mono);
  color: var(--dim);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2px 4px;
}
.tab:hover {
  color: var(--champagne);
}
.tab.on {
  color: var(--gold-hi);
  background: linear-gradient(180deg, #211d27, var(--ob-2));
  border-color: var(--line-2);
  box-shadow: 0 -4px 14px rgba(212, 175, 55, 0.08);
  position: relative;
}
.tab.on::before {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: -1px;
  height: 2px;
  border-radius: 2px;
  background: var(--metal);
}
.tools {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding-bottom: 5px;
  min-width: 0;
  overflow: clip;
  overflow-clip-margin: 6px;
}
.tabs > .tab {
  flex: none;
  white-space: nowrap;
}
.tabs > .winctl {
  flex: none;
  margin: 0 0 5px 10px;
}
/* Narrow panes: drop key hints and labels, then inactive tab names, before
   the tools clip; the window buttons always stay visible. */
.pane {
  container-type: inline-size;
}
@container (max-width: 760px) {
  .tabs .tab kbd,
  .tabs .tools .label {
    display: none;
  }
  .tabs .tab {
    padding: 0 10px;
  }
}
@container (max-width: 640px) {
  .tabs .tab:not(.on) > span {
    display: none;
  }
  .tabs .tools {
    gap: 5px;
  }
}
.tools .label {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}

.dock-body {
  flex: 1;
  min-height: 0;
  background: var(--ob-2);
  position: relative;
}

/* ---------------------------------------------------------------- hint bar, toasts, banners */

.hintbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 12px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, #110f14, #09080b);
  color: var(--muted);
  font-size: 11px;
}
.hintbar .hint {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--serif);
  font-size: 14px;
  font-style: italic;
  color: var(--champagne);
}
.hintbar .meta {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.banner {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 7px 12px;
  background: linear-gradient(90deg, rgba(156, 74, 87, 0.45), rgba(92, 29, 43, 0.2));
  border-bottom: 1px solid rgba(224, 112, 126, 0.4);
  color: #f3c0c6;
  font-size: 11.5px;
}
.banner code {
  font-family: var(--mono);
  font-size: 10.5px;
  color: #fff;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 3, 6, 0.72);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  z-index: 60;
}
.dialog {
  width: min(420px, calc(100vw - 32px));
  padding: 20px 22px;
  border-radius: 16px;
  background: linear-gradient(180deg, #1f1b24, #121015);
  border: 1px solid var(--line-3);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.7),
    var(--glow);
}
.dialog h2 {
  margin: 0 0 6px;
  font: italic 600 26px/1.1 var(--serif);
  color: var(--gold-hi);
}
.dialog p {
  margin: 0 0 14px;
  color: var(--muted);
  font: 15px/1.4 var(--serif);
}
.dialog .row {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}
.dialog a {
  color: var(--gold-hi);
}