/* Shared light/dark palette for the platform entry pages and legacy course surfaces. */
html[data-theme="dark"] { color-scheme: dark; }
html[data-theme="dark"] body.auth-body { background: linear-gradient(135deg,#101827 0%,#121a25 50%,#201a32 100%) !important; color:#e6edf6; }
html[data-theme="dark"] .auth-card { background:#172230; border-color:#35485b; box-shadow:0 20px 50px rgba(0,0,0,.32); }
html[data-theme="dark"] .auth-logo h1,html[data-theme="dark"] .auth-admin-top h1 { color:#aebeff; }
html[data-theme="dark"] .auth-logo p,html[data-theme="dark"] .auth-admin-user,html[data-theme="dark"] .auth-check,html[data-theme="dark"] .auth-foot,html[data-theme="dark"] .auth-tip { color:#aebccb; }
html[data-theme="dark"] .auth-field label { color:#e6edf6; }
html[data-theme="dark"] .auth-field input,html[data-theme="dark"] .auth-field select { background:#101923; color:#e6edf6; border-color:#405368; }
html[data-theme="dark"] .auth-field input::placeholder { color:#7890a3; }
html[data-theme="dark"] .auth-tip,html[data-theme="dark"] .auth-table th { background:#1d2a38; }
html[data-theme="dark"] .auth-table-wrap,html[data-theme="dark"] .auth-table th,html[data-theme="dark"] .auth-table td,html[data-theme="dark"] .auth-tabs { border-color:#405368; }
html[data-theme="dark"] .auth-table td { color:#d9e4ee; }
html[data-theme="dark"] .auth-table code,html[data-theme="dark"] .auth-btn-secondary,html[data-theme="dark"] .auth-actions button { background:#203041; color:#dce7f1; border-color:#405368; }
html[data-theme="dark"] .auth-tab { color:#aebccb; }
html[data-theme="dark"] .auth-tab.active { background:#202b52; color:#b9c6ff; }

html[data-theme="dark"] body:not(.auth-body) { background:#101821 !important; color:#dce7f1; }
html[data-theme="dark"] .topbar { background:#151f29 !important; border-color:#334553 !important; }
html[data-theme="dark"] .topbar-user,html[data-theme="dark"] .topbar-actions a,html[data-theme="dark"] .topbar-actions button { color:#dce7f1 !important; }
html[data-theme="dark"] .topbar-actions a,html[data-theme="dark"] .topbar-actions button { background:#1b2936 !important; border-color:#405368 !important; }
html[data-theme="dark"] .mission-panel { background:#324554 !important; border-color:#324554 !important; box-shadow:0 18px 52px rgba(0,0,0,.3); }
html[data-theme="dark"] .mission-main,html[data-theme="dark"] .mission-side,html[data-theme="dark"] .course-card { background:#17232e !important; color:#dce7f1 !important; border-color:#354b5c !important; box-shadow:0 3px 13px rgba(0,0,0,.18); }
html[data-theme="dark"] .mission-main h2,html[data-theme="dark"] .section-title,html[data-theme="dark"] .course-card h2 { color:#e8f0f6 !important; }
html[data-theme="dark"] .mission-main p,html[data-theme="dark"] .mission-side span,html[data-theme="dark"] .course-desc,html[data-theme="dark"] .course-meta,html[data-theme="dark"] .section-hint,html[data-theme="dark"] .footer { color:#aebdca !important; }
html[data-theme="dark"] .mission-step { background:#1c3439 !important; color:#bdeade !important; }
html[data-theme="dark"] .mission-stat { border-color:#4f978b; }
html[data-theme="dark"] .mission-stat b { color:#bdeade; }
html[data-theme="dark"] .section-title::after { background:linear-gradient(90deg,#334a59,transparent); }
html[data-theme="dark"] .course-card:hover { border-color:#5a9a9d !important; box-shadow:0 10px 28px rgba(0,0,0,.3); }
html[data-theme="dark"] .course-card .course-tag,html[data-theme="dark"] .course-card .course-action { background:#1d3440 !important; color:#a9e4db !important; }
html[data-theme="dark"] .footer { border-color:#334553; }

/* A safe baseline for pages with their own card and table layouts. */
html[data-theme="dark"] main,html[data-theme="dark"] .container,html[data-theme="dark"] .page-shell { color:inherit; }
html[data-theme="dark"] input,html[data-theme="dark"] select,html[data-theme="dark"] textarea { color-scheme:dark; }