/* 4.0 space accents; the approved logo and sign-in identity stay unchanged. */
body { --space-accent: #6eaeff; --space-on-accent: #081626; --space-tint: rgba(110,174,255,.08); }
body[data-space="tech"] { --space-accent: #44d6d0; }
body[data-space="life"] { --space-accent: #65d7aa; }
body[data-space="fun"] { --space-accent: #bb98ff; }
body[data-space="tech"] { --space-tint: rgba(68,214,208,.08); }
body[data-space="life"] { --space-tint: rgba(101,215,170,.08); }
body[data-space="fun"] { --space-tint: rgba(187,152,255,.08); }
html.light-theme body { --space-accent: #1264d7; --space-on-accent: #fff; }
html.light-theme body[data-space="tech"] { --space-accent: #007d8a; }
html.light-theme body[data-space="life"] { --space-accent: #147d52; }
html.light-theme body[data-space="fun"] { --space-accent: #7344c8; }
#app, #chatView, .ui-dialog {
  --accent: var(--space-accent);
  --ui-accent: var(--space-accent);
  --accent-soft: color-mix(in srgb, var(--space-accent) 13%, transparent);
  --v3-line-strong: color-mix(in srgb, var(--space-accent) 30%, var(--surface-border));
}
#app .btn-primary, #chatView .chat-bubble.user,
#chatView .chat-input-row > button:not(.chat-icon-btn), .ui-dialog .btn-primary {
  background: var(--accent); color: var(--space-on-accent);
}
#app .workspace-sidebar {
  border-inline-end-color: color-mix(in srgb,var(--accent) 30%,var(--surface-border));
  background: linear-gradient(180deg,var(--space-tint),transparent 150px),var(--panel);
}
#app .workspace-nav a.active, #app .mobile-nav a.active {
  color: var(--accent); background: var(--accent-soft);
  border-color: color-mix(in srgb,var(--accent) 45%,transparent);
}
/* A routed page must never bleed into another space because of legacy ID styles. */
#app .workspace-content > .page:not(.active) { display: none !important; }
#p-needme.active { display: grid; gap: 15px; }

#app .app-topbar {
  display: grid; grid-template-columns: auto minmax(0,1fr) auto;
  align-items: center; gap: 16px; position: relative; z-index: 60; overflow: visible;
  padding: 14px 20px; min-height: 76px;
}
#app .app-topbar > .page-title { display: none; }
#app .topbar-center { min-width: 0; width: 100%; }
#app .topbar-actions { display: flex; align-items: center; gap: 8px; }
.space-picker { position: relative; flex: 0 0 auto; color: var(--fg); }
.space-trigger {
  display: inline-flex; align-items: center; gap: 10px; min-height: 46px;
  max-width: 250px; padding: 6px 10px; border: 1px solid var(--surface-border);
  border-radius: 13px; background: color-mix(in srgb,var(--panel2) 94%,var(--space-tint)); color: var(--fg); font: inherit;
  font-weight: 650; cursor: pointer; box-shadow: 0 1px 0 rgba(255,255,255,.04) inset;
}
.space-trigger:hover { border-color: var(--accent); background: var(--accent-soft); }
.space-trigger[aria-expanded="true"] { outline: 2px solid var(--accent); outline-offset: 2px; }
.space-trigger:disabled { cursor: progress; opacity: .7; }
.space-name { white-space: nowrap; }
.space-mark { width: 30px; height: 30px; display: grid; place-items: center; flex-shrink: 0; color: var(--accent); }
.space-mark svg { width: 23px; height: 23px; }
.space-chevron { display: flex; color: var(--muted); }
.space-chevron svg { width: 16px; height: 16px; }
.space-menu {
  position: absolute; inset-inline-start: 0; top: calc(100% + 10px); z-index: 100;
  width: 270px; max-width: calc(100vw - 24px); padding: 8px;
  background: var(--ui-surface); color: var(--ui-text); border: 1px solid var(--ui-line);
  box-shadow: var(--ui-shadow); border-radius: 18px;
}
.space-menu[hidden], .space-notice[hidden] { display: none !important; }
.space-option {
  display: flex; align-items: center; gap: 10px; width: 100%; min-height: 48px;
  padding: 8px 10px; margin: 2px 0; text-align: start; font: inherit;
  background: transparent; color: var(--ui-text); border: 1px solid transparent;
  border-radius: 11px; box-shadow: none; cursor: pointer;
}
.space-option[data-os-space="work"] { --option-accent: #6eaeff; }
.space-option[data-os-space="tech"] { --option-accent: #44d6d0; }
.space-option[data-os-space="life"] { --option-accent: #65d7aa; }
.space-option[data-os-space="fun"] { --option-accent: #bb98ff; }
html.light-theme .space-option[data-os-space="work"] { --option-accent: #1264d7; }
html.light-theme .space-option[data-os-space="tech"] { --option-accent: #007d8a; }
html.light-theme .space-option[data-os-space="life"] { --option-accent: #147d52; }
html.light-theme .space-option[data-os-space="fun"] { --option-accent: #7344c8; }
.space-option .space-mark, .space-option .space-check { color: var(--option-accent); }
.space-option:hover, .space-option:focus-visible, .space-option[aria-checked="true"] {
  background: color-mix(in srgb,var(--option-accent) 12%,transparent);
  border-color: color-mix(in srgb,var(--option-accent) 40%,transparent);
}
.space-check { margin-inline-start: auto; visibility: hidden; }
.space-option[aria-checked="true"] .space-check { visibility: visible; }
.space-notice {
  position: fixed; z-index: 1000; bottom: 100px; inset-inline: 16px;
  width: fit-content; max-width: min(560px,calc(100vw - 32px)); margin-inline: auto;
  background: var(--ui-surface); color: var(--ui-text); border: 1px solid var(--ui-line);
  border-radius: 14px; padding: 12px 18px; box-shadow: var(--ui-shadow);
}
.space-switching .chat-input-bar, .space-switching .chat-sidebar { pointer-events: none; opacity: .7; }
.space-switching .workspace-content { pointer-events:none; opacity:.62; transform:translateY(3px); }
.workspace-content { transition:opacity .16s ease,transform .16s ease; }

#p-os { max-width: 1240px; margin-inline: auto; padding: 24px 0; }
#p-os .os-topline {
  display:block; position:relative; overflow:hidden; margin-bottom:18px; padding:22px 24px;
  border:1px solid color-mix(in srgb,var(--accent) 24%,var(--surface-border)); border-radius:20px;
  background:linear-gradient(120deg,var(--space-tint),transparent 62%),var(--panel);
}
#p-os .os-topline::after {
  content:""; position:absolute; inset-block:18px; inset-inline-start:0; width:3px;
  border-radius:999px; background:var(--accent);
}
#p-os .os-topline h2 { font-size: clamp(24px,2.5vw,32px); }
.os-space-caption { color: var(--muted); margin: 8px 0 0; line-height: 1.65; }
#p-os .os-tabs { padding: 0 0 14px; gap: 8px; border-bottom: 1px solid var(--surface-border); }
#p-os .os-tabs button { border-radius: 10px; padding: 9px 16px; box-shadow: none; }
#p-os .os-tabs button[aria-selected="true"] { color: var(--accent); background: var(--accent-soft); }
#p-os .os-message:empty { display: none; }
#p-os .os-message { margin: 12px 0; }
#p-os .os-card { background: var(--panel); border-color: var(--surface-border); }
.os-overview-grid { margin: 24px 0 32px; }
.os-overview-action { text-align: start; color: var(--fg); font: inherit; cursor: pointer; box-shadow: none; }
.os-overview-action:hover { border-color: var(--accent) !important; }
.os-overview-icon { display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 20px; color: var(--accent); background: var(--accent-soft); border-radius: 13px; }
.os-overview-icon svg { width: 23px; height: 23px; }
.os-overview-action p { color: var(--muted); font-size: 14px; }
#p-os .os-toolbar { align-items: end; margin-top: 22px; }
#p-os .os-toolbar label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
#p-os .os-toolbar select { min-height: 44px; padding: 8px 12px; border-radius: 10px; border: 1px solid var(--surface-border); background: var(--panel2); color: var(--fg); font: inherit; }

/* One icon source per control, including the account summary that used to render twice. */
.chat-account > summary::before, .chat-account > summary::after { content: none !important; }
.chat-account > summary, #chatView .chat-icon-btn, #app .topbar-btn, .ui-dialog-close {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0; min-width: 42px; width: 42px; min-height: 42px; height: 42px;
  border-radius: 12px; line-height: 1; flex-shrink: 0;
}
.chat-account > summary svg, #chatView .chat-icon-btn svg, #app .topbar-btn svg, .ui-dialog-close svg { width: 21px; height: 21px; flex-shrink: 0; }
.chat-account > summary { font-size: 0; }
#chatView .view-header {
  display: flex !important; flex-wrap: nowrap; justify-content: space-between;
  align-items: center; gap: 12px; padding: 12px 18px; min-height: 72px;
  position: relative; z-index: 60; overflow: visible;
}
#chatView .view-header-start { display: flex; align-items: center; gap: 9px; min-width: 0; flex: 1; }
#chatView .view-header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
#chatView .view-header .chat-brand-mark { position: static !important; transform: none !important; width: 38px; height: 38px; object-fit: contain; margin: 0 !important; order: -2; }
#chatView .view-header .space-picker { order: -1; }
#chatView .chat-header-new-label, #chatView .context-note-label { display: none; }
#chatView .chat-context-btn, #chatView .chat-header-new { padding: 0; width: 42px; min-width: 42px; }
#chatView .chat-project-picker-btn { margin-inline-start: auto; max-width: 190px; }
body:not([data-space="work"]) #chatProjectPickerBtn,
body:not([data-space="work"]) #chatProjectContextHint,
body:not([data-space="work"]) .chat-project-filter-wrap,
body:not([data-space="work"]) #chatWorkContext { display: none !important; }
#chatView .chat-sidebar { background: color-mix(in srgb,var(--accent) 3%,var(--panel)); border-inline-start: 1px solid var(--surface-border); }
#chatView .chat-session-item.active { border-color: var(--accent); }

@media(max-width:900px) {
  #chatView .chat-preset-badge, #chatView .chat-dashboard-btn { display: none; }
  #chatView .chat-project-picker-btn { max-width: 140px; }
}
@media(max-width:600px) {
  #app .app-topbar {
    grid-template-columns: minmax(0,1fr) auto;
    min-height: 0;
    padding: 8px 10px 9px;
    gap: 8px;
    position: relative;
  }
  #app .topbar-center { grid-column: 1 / -1; grid-row: 2; }
  #app .global-search { height: 40px; border-radius: 14px; }
  #app .space-picker { justify-self: start; }
  .space-trigger { gap: 7px; max-width: 215px; min-height: 42px; }
  #chatView .view-header { padding: 8px 10px; gap: 6px; }
  #chatView .view-header-start { gap: 5px; }
  #chatView .view-header .chat-brand-mark { width: 28px; height: 28px; }
  #chatView .space-trigger { min-height: 42px; padding: 4px 6px; gap: 4px; font-size: 13px; }
  #chatView .space-mark { width: 24px; }
  #chatView .space-chevron { display: none; }
  #chatView .chat-project-picker-btn { display: none; }
  #chatView .chat-context-btn { display: none; }
  #chatView .chat-icon-btn, .chat-account > summary { width: 40px; min-width: 40px; }
  #app .workspace-content { padding-top: 10px; }
  #p-os { padding-top: 0; }
  #p-os .os-topline { margin-bottom: 12px; padding:16px 15px; border-radius:17px; }
  #p-os .os-topline h2 { font-size: 23px; }
  #p-os .os-tabs { gap: 5px; overflow-x: auto; flex-wrap: nowrap; scrollbar-width: none; }
  #p-os .os-tabs::-webkit-scrollbar { display: none; }
  #p-os .os-tabs button { flex: 0 0 auto; padding: 8px 12px; }
  .os-overview-grid { gap: 10px; }
  .os-overview-action { padding: 16px; }
  .os-overview-icon { margin-bottom: 12px; }
}
@media(prefers-reduced-motion:reduce) { .space-trigger, .space-option, .workspace-content { transition: none; } }
@media(max-width:380px) { #chatView .chat-header-new { display: none; } }

/* Mobile shell: one compact header, a true full-height chat, and unobstructed content. */
@media(max-width:600px) {
  #chatView.chat-shell:not(.hide):not([hidden]) {
    min-height: var(--chat-visual-height, 100dvh) !important;
  }
  #chatView .view-header {
    min-height: 62px;
    height: 62px;
    flex: 0 0 62px;
    padding: 8px 9px;
  }
  #chatView .chat-body {
    flex: 1 1 0 !important;
    min-height: 0 !important;
    height: auto !important;
    display: flex !important;
  }
  #chatView .chat-pane {
    position: relative !important;
    inset: auto !important;
    flex: 1 1 auto !important;
    height: 100% !important;
    min-height: 0 !important;
    display: grid !important;
    grid-template-rows: minmax(0,1fr) auto !important;
  }
  #chatView .chat-main { min-height: 0 !important; }
  #chatView .chat-input-bar {
    position: relative !important;
    bottom: auto !important;
    align-self: end;
  }
}

@media(max-width:768px) {
  #app .mobile-nav {
    gap: 2px;
    padding: 5px 4px calc(5px + env(safe-area-inset-bottom,0px));
    border-radius: 18px;
  }
  #app .mobile-nav a {
    min-width: 54px;
    min-height: 54px;
    padding: 6px 4px;
    border-radius: 13px;
    font-size: 10px;
  }
  #app .mobile-nav .nav-icon svg { width: 21px; height: 21px; }
}