/* Desktop AI surfaces. Route-specific Obsidian Sand translation. */
#screen-ai-coach .coach-desktop-intro { display: none; }
/* width/height attributes on the hero image reserve its aspect ratio only; the layout size stays CSS-driven. */
#screen-ai-coach .coach-desktop-intro img { height: auto; }
@media (min-width: 1025px) {
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach {
    --coach-bg: var(--tp-color-page);
    --coach-text: var(--tp-color-text);
    --coach-muted: var(--tp-color-text-secondary);
    --coach-accent: var(--tp-color-primary);
    --coach-glass-border: var(--tp-color-border);
    --coach-line-soft: color-mix(in srgb, var(--tp-color-border) 72%, transparent);
    --coach-header-h: 66px;
    background: var(--tp-color-page);
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach[data-coach-started="true"] { background: var(--tp-color-page) !important; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-header {
    grid-template-columns: 42px minmax(0, 1fr) auto;
    min-height: 66px;
    padding-inline: max(32px, calc((100vw - 1160px) / 2));
    border-bottom-color: var(--tp-color-border);
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-heading strong { font-size: 19px; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-back,
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-header-actions button {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    transition: background-color 160ms ease, border-color 160ms ease;
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-back:hover,
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-header-actions button:hover { background: var(--tp-color-surface-raised); border-color: var(--tp-color-border); }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-chat-scroll { padding-inline: 32px; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-hero { width: min(100%, 720px); gap: 0; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-hero__mascot,
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-hero > h2,
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-hero__question,
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-hero__intro { display: none; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-desktop-intro {
    display: grid;
    justify-items: center;
    gap: 12px;
    width: 100%;
    text-align: center;
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-desktop-intro img {
    display: block;
    width: min(100%, 280px);
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border: 1px solid var(--tp-color-border);
    border-radius: 8px;
    box-shadow: 0 14px 28px rgba(0,0,0,.24);
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-desktop-intro h2 {
    max-width: 18ch;
    margin: 6px 0 0;
    color: var(--tp-color-text);
    font: 700 29px/1.16 var(--tp-font-display);
    letter-spacing: -.025em;
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-desktop-intro p {
    max-width: 58ch;
    margin: 0;
    color: var(--tp-color-text-secondary);
    font: 400 15px/1.5 var(--tp-font-sans);
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-quick { width: min(calc(100% - 48px), 640px); margin-bottom: 12px; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-quick__chip { transition: background-color 160ms ease, border-color 160ms ease; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-quick__chip:hover { border-color: var(--tp-color-primary); }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-composer {
    width: min(calc(100% - 48px), 760px);
    border-color: var(--tp-color-border);
    box-shadow: 0 10px 24px rgba(0,0,0,.18);
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach .coach-composer:focus-within { border-color: var(--tp-color-primary); }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach :is(button, textarea):focus-visible { outline: 2px solid var(--tp-color-primary); outline-offset: 2px; }

  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research.tp-research-center {
    --surface-raised: var(--tp-color-surface);
    --surface-deep: var(--tp-color-bg-secondary, var(--tp-color-page));
    --border-subtle: var(--tp-color-border);
    --accent-gold: var(--tp-color-primary);
    --text-primary: var(--tp-color-text);
    --text-secondary: var(--tp-color-text-secondary);
    background: var(--tp-color-page);
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-header,
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-layout { width: min(100%, 1200px); margin-inline: auto; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-header {
    min-height: 112px;
    padding: 25px 28px 16px;
    border-bottom: 1px solid var(--tp-color-border);
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-header h1 { font-size: 31px; line-height: 1.2; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-header p { color: var(--tp-color-text-secondary); font-size: 15px; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-layout { gap: 16px; padding: 22px 28px 70px; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-closed {
    grid-template-columns: 28px minmax(0, 1fr);
    justify-items: start;
    align-content: center;
    gap: 8px 18px;
    width: 100%;
    max-width: none;
    min-height: 146px;
    margin: 8px 0 0;
    padding: 22px 28px;
    border: 1px solid var(--tp-color-border);
    border-left: 3px solid var(--tp-color-primary);
    border-radius: 8px;
    background: var(--tp-color-surface);
    box-shadow: 0 8px 22px rgba(0,0,0,.12);
    text-align: left;
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-closed i { grid-column: 1; grid-row: 1 / 3; align-self: center; font-size: 21px; color: var(--tp-color-primary); }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-closed h2 { grid-column: 2; margin: 0; font-size: 22px; line-height: 1.3; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-closed p { grid-column: 2; margin: 0; max-width: 72ch; font-size: 14px; line-height: 1.5; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research :is(.research-compose,.research-history,.research-showcase,.research-human-validation,.research-admin,.research-job-detail) {
    border-color: var(--tp-color-border);
    border-radius: 10px;
    background: var(--tp-color-surface);
    box-shadow: none;
  }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-compose { padding: 22px; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-mode-tabs { padding: 3px; border-radius: 8px; background: var(--tp-color-bg-secondary, var(--tp-color-page)); }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-mode-tabs button { min-height: 40px; border-radius: 6px; transition: background-color 160ms ease, color 160ms ease; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research #research-position-pane { grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); gap: 28px; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-position-preview { border-radius: 8px; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-source-copy strong { font-size: 20px; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-source-copy p { font-size: 14px; line-height: 1.5; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-job-card { border-radius: 8px; background: var(--tp-color-bg-secondary, var(--tp-color-page)); transition: background-color 160ms ease, border-color 160ms ease; }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research .research-job-card:hover { background: var(--tp-color-surface-raised); }
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research :is(button, select, textarea, summary):focus-visible { outline: 2px solid var(--tp-color-primary); outline-offset: 2px; }
  /* Steppe Light: softer elevation on light surfaces. */
  html[data-theme="steppe-light"] #screen-ai-coach .coach-desktop-intro img { box-shadow: var(--tp-shadow-md); }
  html[data-theme="steppe-light"] #screen-ai-coach .coach-composer { box-shadow: var(--tp-shadow-md); }
  html[data-theme="steppe-light"] #screen-research .research-closed { box-shadow: var(--tp-shadow-md); }
}
@media (min-width: 1025px) and (prefers-reduced-motion: reduce) {
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-ai-coach :is(.coach-back,.coach-header-actions button,.coach-quick__chip),
  html:is([data-theme="obsidian-sand"], [data-theme="steppe-light"]) #screen-research :is(.research-mode-tabs button,.research-job-card) { transition: none; }
}