/* Steppe Light material bridges. Palette owner: rewards-themes.css.
 * This sheet only fixes legacy dark literals and visual component tokens.
 * No game geometry, events, board structure or rules are changed here. */
html[data-theme="steppe-light"] {
    --tp-radius-xs: 6px;
    --tp-radius-sm: 8px;
    --tp-radius-md: 12px;
    --tp-radius-lg: 16px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --vp-canvas: var(--product-bg);
    --vp-canvas-deep: var(--product-bg-secondary);
    --vp-panel: var(--surface-1);
    --vp-panel-raised: var(--surface-2);
    --vp-panel-soft: var(--surface-raised);
    --vp-line: var(--border-subtle);
    --vp-line-strong: var(--tp-color-border-strong);
    --vp-ink: var(--text-primary);
    --vp-muted: var(--text-secondary);
    --vp-sand: var(--accent);
    --vp-green: var(--success);
    --vp-green-hover: var(--success);
    --vp-shadow-sm: var(--tp-shadow-xs);
    --vp-shadow-md: var(--tp-shadow-sm);
    --vp-shadow-lg: var(--tp-shadow-md);
    --gold-light: var(--accent);
    --red-bright: var(--danger);
    --text-disabled: var(--ink-disabled);
    --shadow-gold: none !important;
    --shadow-glow-gold: none !important;
    --shadow-glow-steppe: none !important;
    --shadow-glow-blood: none !important;
}

html[data-theme="steppe-light"] body,
html[data-theme="steppe-light"] body > .app-container.tp-shell,
html[data-theme="steppe-light"] #screen-home.tp-dash,
html[data-theme="steppe-light"] #screen-home.tp-dash::after,
html[data-theme="steppe-light"] #web-auth-screen.sm-landing {
    background: var(--tp-color-page) !important;
    color: var(--tp-color-text);
}
html[data-theme="steppe-light"] #screen-home.tp-dash::before,
html[data-theme="steppe-light"] #screen-settings::before { background: none; }

/* Bootstrap resolves this attribute before revealing the shell. */
html[data-theme="steppe-light"] #tp-boot-shell { background: var(--product-bg); }
html[data-theme="steppe-light"] #tp-boot-shell__word { color: var(--text-primary); }
html[data-theme="steppe-light"] #tp-boot-shell::before,
html[data-theme="steppe-light"] #tp-boot-shell::after { background: none; }
/* Ornament in the theme accent, the same green as the board mark and "PRO". */
html[data-theme="steppe-light"] #tp-boot-shell__corners i { color: color-mix(in srgb, var(--accent) 82%, var(--product-bg)); }
html[data-theme="steppe-light"] #tp-boot-shell__mark i {
    background: var(--accent) !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] #tp-boot-shell__mark rect { stroke: var(--accent); }
html[data-theme="steppe-light"] #tp-boot-shell__mark b { background: var(--accent); }
html[data-theme="steppe-light"] #tp-boot-shell__word span { background: none; -webkit-text-fill-color: var(--text-primary); color: var(--text-primary); }
html[data-theme="steppe-light"] #tp-boot-shell__word span:nth-child(n+6) { -webkit-text-fill-color: var(--accent); color: var(--accent); }
html[data-theme="steppe-light"] #tp-boot-shell__bar { background: var(--border-subtle); }
html[data-theme="steppe-light"] #tp-boot-shell__bar::after { background: var(--accent); box-shadow: none; }
html[data-theme="steppe-light"] ::selection { background: #BBD5CC; color: var(--text-primary); }
html[data-theme="steppe-light"] * { scrollbar-color: #AAA292 var(--product-bg); }
html[data-theme="steppe-light"] *::-webkit-scrollbar-track { background: var(--product-bg); }
html[data-theme="steppe-light"] *::-webkit-scrollbar-thumb {
    background: #AAA292;
    border-color: var(--product-bg);
}
html[data-theme="steppe-light"] .rating-toast { box-shadow: var(--tp-shadow-sm) !important; }

html[data-theme="steppe-light"] :is(.sm-app-sidebar, .tp-sidebar, .tp-topbar) {
    background: var(--tp-color-header) !important;
    border-color: var(--tp-color-border) !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] .sm-sidebar-item { color: var(--tp-color-text-muted) !important; }
html[data-theme="steppe-light"] .sm-sidebar-item:is(:hover, .active) {
    color: var(--tp-color-primary) !important;
    background: var(--tp-color-surface-raised) !important;
}
html[data-theme="steppe-light"] :is(.tp-profile-menu, .tp-tools-menu, .tp-notification-center) {
    background: var(--tp-color-surface) !important;
    border-color: var(--tp-color-border) !important;
    box-shadow: var(--tp-shadow-md) !important;
    backdrop-filter: none !important;
}

html[data-theme="steppe-light"] #screen-home.tp-dash {
    --dash-surface: var(--tp-color-surface);
    --dash-surface-raised: var(--tp-color-surface-raised);
    --dash-surface-hover: var(--tp-color-surface-soft);
    --dash-hairline: var(--tp-color-border);
    --dash-art-base: var(--tp-color-page-secondary);
    --dash-art-warm: var(--tp-color-surface-soft);
    --dash-art-glow: transparent;
    --dash-stone: var(--tp-color-primary);
}
html[data-theme="steppe-light"] #screen-home :is(.tp-dash-stage, .tp-dash-row--modes, #home-progress-row) {
    border-color: var(--tp-color-border);
    box-shadow: none;
}
html[data-theme="steppe-light"] #screen-home .tp-dash-stage__board::after {
    /* Local photo scrim keeps the wordmark legible, without tinting the UI. */
    background: linear-gradient(90deg, transparent 80%, var(--tp-color-surface)),
        linear-gradient(0deg, rgba(42, 32, 21, .64), transparent 56%);
}
html[data-theme="steppe-light"] #screen-home .tp-dash-stage__wordmark {
    color: var(--accent-ink);
    text-shadow: none;
}
html[data-theme="steppe-light"] #screen-home :is(.tp-dash-today, .tp-dash-tile--stat) {
    border: 1px solid var(--tp-color-border);
    box-shadow: none;
}
html[data-theme="steppe-light"] #screen-home #home-progress-row .tp-dash-tile--stat { border: 0; }
html[data-theme="steppe-light"] #screen-home .tp-dash-block--modes .tp-dash-block__head h2::before {
    filter: saturate(.35);
}

html[data-theme="steppe-light"] #screen-bot-setup :is(.ai-setup-config, .ai-setup-preview) {
    border-color: var(--tp-color-border);
    box-shadow: none;
}
html[data-theme="steppe-light"] #screen-bot-setup :is(.ai-segmented, .ai-segment-option, .ai-choice-card) {
    border-color: var(--tp-control-edge);
    background: var(--tp-color-surface);
}
html[data-theme="steppe-light"] #screen-bot-setup :is(.ai-segment-option, .ai-choice-card).selected {
    border-color: var(--tp-color-primary);
    background: color-mix(in srgb, var(--tp-color-primary) 9%, var(--tp-color-surface));
}
html[data-theme="steppe-light"] #screen-bot-setup :is(.ai-choice-card__badge, .ai-level-badge) {
    color: var(--tp-color-primary);
    background: var(--tp-color-surface-raised);
}
html[data-theme="steppe-light"] #screen-bot-setup .ai-start-button { box-shadow: none !important; }
html[data-theme="steppe-light"] #screen-bot-setup .ai-start-button::before,
html[data-theme="steppe-light"] #screen-bot-setup .ai-start-button::after { background: none !important; }
html[data-theme="steppe-light"] :is(.sub-screen-back, .back-btn-top, .sm-back-btn) {
    background: var(--surface-2) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-subtle) !important;
}
html[data-theme="steppe-light"] .ai-side-disc--white { background: var(--accent-ink); }
html[data-theme="steppe-light"] .ai-side-disc--black { background: var(--text-primary); }
html[data-theme="steppe-light"] :is(.sm-page-header, .sub-screen-header, .home-header) {
    background: var(--surface-1) !important;
    box-shadow: none !important;
}

/* Opaque surfaces replace glass only in this preset. */
html[data-theme="steppe-light"] #screen-settings {
    --tp-glass-tint: var(--surface-1);
    --tp-glass-tint-strong: var(--surface-2);
    --tp-glass-edge: var(--border-subtle);
    --tp-glass-sheen: transparent;
    --tp-glass-blur: none;
    --tp-glass-radius: 10px;
}
html[data-theme="steppe-light"] :is(.tp-settings-card, .tp-settings-profile-card, .tp-settings-nav,
    .tp-settings-row, .tp-theme-choice, .tp-profile-card, .tp-reward-card) {
    background: var(--tp-color-surface) !important;
    border-color: var(--tp-color-border) !important;
    backdrop-filter: none !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] .tp-theme-choice.is-selected {
    border-color: var(--tp-color-primary) !important;
    background: color-mix(in srgb, var(--tp-color-primary) 9%, var(--tp-color-surface)) !important;
}
.tp-theme-choice__preview--light {
    background: linear-gradient(135deg, #F3EFE4 0 50%, #176C68 50% 70%, #DCC7A5 70%);
    border: 1px solid #817B6E;
}

/* Legacy primary actions assume dark ink on gold. */
html[data-theme="steppe-light"] :is(.btn-primary, .sm-auth-submit, .sm-landing-cta--primary,
    .analyze-btn-new, .btn-launch-tourn, .tp-dash-primary__start, .tp-dash-primary__go,
    .tp-dash-primary__cta) {
    color: var(--tp-color-primary-ink) !important;
    background: var(--tp-color-primary) !important;
    text-shadow: none !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] :is(.btn-primary, .sm-auth-submit, .sm-landing-cta--primary,
    .analyze-btn-new, .btn-launch-tourn):hover { background: var(--tp-color-primary-hover) !important; }

html[data-theme="steppe-light"] :is(input:not([type="checkbox"]):not([type="radio"]):not([type="range"]),
    select, textarea, .sm-auth-input) {
    background-color: var(--tp-color-surface) !important;
    color: var(--tp-color-text) !important;
    border-color: var(--tp-control-edge) !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] :is(input, textarea)::placeholder {
    color: var(--tp-color-text-subtle) !important;
    opacity: 1;
}
html[data-theme="steppe-light"] :is(input:not([type="checkbox"]):not([type="radio"]):not([type="range"]), textarea, select):focus {
    border-color: var(--tp-color-primary) !important;
    outline: 2px solid var(--tp-color-focus) !important;
    outline-offset: 2px;
}
html[data-theme="steppe-light"] :is(button, a, input, select, textarea, [role="button"], [tabindex]):focus-visible {
    outline: 2px solid var(--tp-color-focus) !important;
    outline-offset: 3px !important;
}
html[data-theme="steppe-light"] #screen-game :is(button, a, input, select, textarea, [tabindex]):focus-visible {
    outline: 2px solid var(--tp-color-focus) !important;
    outline-offset: 3px !important;
}
html[data-theme="steppe-light"] .tp-toggle input:checked + span { background: var(--tp-color-primary); }
html[data-theme="steppe-light"] .tp-toggle input:checked + span::before { background: var(--accent-ink); }
html[data-theme="steppe-light"] :is(.badge--gold, .badge--steppe, .badge--sky) { box-shadow: none; }
html[data-theme="steppe-light"] .sm-auth-card { background: var(--surface-1) !important; box-shadow: none !important; }
html[data-theme="steppe-light"] .sm-auth-tab.is-active { box-shadow: var(--tp-shadow-xs) !important; }
html[data-theme="steppe-light"] #web-auth-screen.sm-landing { --ink-muted: var(--text-secondary); }

html[data-theme="steppe-light"] :is(.modal-overlay, .confirm-dialog-overlay, #game-menu-overlay) {
    background: rgba(39, 35, 27, .38) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}
html[data-theme="steppe-light"] :is(.modal-sheet, .game-menu-sheet, .game-rules-sheet,
    .confirm-dialog-sheet, .create-tournament-sheet, .match-result-card),
html[data-theme="steppe-light"] #game-menu-overlay .game-menu-sheet,
html[data-theme="steppe-light"] #game-rules-overlay .game-rules-sheet {
    background: var(--tp-color-surface) !important;
    color: var(--tp-color-text) !important;
    border-color: var(--tp-color-border) !important;
    box-shadow: var(--tp-shadow-md) !important;
}
html[data-theme="steppe-light"] :is(.modal-title, .modal-close-btn, #game-menu-overlay .modal-title,
    #game-menu-overlay .modal-close-btn, .confirm-dialog-sheet h2) { color: var(--tp-color-text) !important; }
html[data-theme="steppe-light"] :is(.modal-sub, .game-menu-item__description, .game-rules-summary,
    #confirm-dialog-message) { color: var(--tp-color-text-muted) !important; }
html[data-theme="steppe-light"] :is(.game-menu-item, .confirm-dialog-actions button) {
    background: var(--tp-color-surface-raised);
    color: var(--tp-color-text);
    border-color: var(--tp-color-border);
}
html[data-theme="steppe-light"] :is(.game-menu-item > i, .confirm-dialog-icon) { color: var(--tp-color-primary); }
html[data-theme="steppe-light"] .confirm-dialog-actions .is-destructive {
    background: var(--tp-color-danger);
    color: var(--accent-ink);
}
html[data-theme="steppe-light"] :is([role="tooltip"], .tp-tooltip, .tooltip, .board-hover-tip) {
    background: var(--tp-color-surface-soft) !important;
    color: var(--tp-color-text) !important;
    border-color: var(--tp-color-border-strong) !important;
    box-shadow: var(--tp-shadow-xs);
}

/* The material board keeps every dimension and existing black stone stack.
 * Override local material tokens (not the global --pit-border width token). */
html[data-theme="steppe-light"] #screen-game {
    --mb-shell: var(--product-bg);
    --mb-panel: var(--surface-1);
    --mb-panel-raised: var(--surface-2);
    --mb-panel-border: var(--border-subtle);
    --mb-text: var(--text-primary);
    --mb-text-soft: var(--text-secondary);
    --mb-gold: var(--accent);
    --mb-wood-050: #EEDFC4;
    --mb-wood-100: #E5D3B1;
    --mb-wood-200: #DCC7A5;
    --mb-wood-300: #BEA47C;
    --mb-wood-400: #887250;
    --mb-wood-line: #A48F6E;
    --mb-carve-shadow: rgba(91, 70, 40, .20);
    --mb-ink: #3B3325;
    --mb-ink-soft: #655843;
    --mb-stone-hi: #555753;
    --mb-stone-mid: #292B27;
    --mb-stone-low: #121510;
    --mb-legal: #4C6851;
    --mb-selected: var(--accent);
    --mb-last: #87512B;
    --mb-capture: #87512B;
    --mb-pit-fill: #D9C39F;
    --mb-pit-edge: #A38B65;
}
html[data-theme="steppe-light"] #screen-game.active { background: var(--mb-shell) !important; }
html[data-theme="steppe-light"] #screen-game .board-stage { background: transparent !important; }
html[data-theme="steppe-light"] #screen-game .board-container {
    background: linear-gradient(180deg, var(--mb-wood-050), var(--mb-wood-100)) !important;
    border-color: var(--mb-wood-line) !important;
    box-shadow: 0 2px 5px rgba(53, 44, 29, .10), inset 0 1px 0 rgba(255, 249, 237, .6) !important;
}
html[data-theme="steppe-light"] #screen-game .board-container::before { border-color: var(--mb-wood-line) !important; opacity: .35 !important; }
html[data-theme="steppe-light"] #screen-game .board-container::after { background: none !important; }
html[data-theme="steppe-light"] #screen-game :is(.pit, .kazan-track) {
    background: linear-gradient(180deg, var(--mb-wood-200), var(--mb-pit-fill)) !important;
    border-color: var(--mb-pit-edge) !important;
    box-shadow: inset 0 4px 7px var(--mb-carve-shadow), inset 0 -1px 0 rgba(255, 249, 237, .55) !important;
}
html[data-theme="steppe-light"] #screen-game .pit.legal-move:not(:disabled) {
    border-color: var(--mb-legal) !important;
    box-shadow: inset 0 4px 7px var(--mb-carve-shadow), 0 0 0 1px var(--mb-legal) !important;
}
html[data-theme="steppe-light"] #screen-game .pit.legal-move:not(:disabled):hover {
    background: var(--mb-wood-050) !important;
    border-color: var(--mb-selected) !important;
    box-shadow: inset 0 4px 7px var(--mb-carve-shadow), 0 0 0 2px var(--mb-selected) !important;
}
html[data-theme="steppe-light"] #screen-game .pit.selected-pit,
html[data-theme="steppe-light"] #screen-game .pit.sow-source {
    border-color: var(--mb-selected) !important;
    box-shadow: inset 0 4px 7px var(--mb-carve-shadow), 0 0 0 3px var(--mb-selected) !important;
}
html[data-theme="steppe-light"] #screen-game :is(.pit.last-move-highlight, .pit.last-landing-highlight, .pit.last-sow-source) {
    border-color: var(--mb-last) !important;
    box-shadow: inset 0 4px 7px var(--mb-carve-shadow), 0 0 0 2px var(--mb-last) !important;
}
html[data-theme="steppe-light"] #screen-game .pit.tuzdyk {
    border-color: var(--mb-last) !important;
    background: var(--mb-wood-050) !important;
    box-shadow: inset 0 0 0 2px var(--mb-last) !important;
}
html[data-theme="steppe-light"] #screen-game :is(.pit-count-label, .kazan-score, .pit .pit-number) {
    color: var(--mb-ink) !important;
    text-shadow: none !important;
}
html[data-theme="steppe-light"] #screen-game .pit-count-label[data-empty="true"] { color: var(--mb-ink-soft) !important; }
html[data-theme="steppe-light"] #screen-game .kazan-score {
    background: var(--mb-wood-050) !important;
    border-color: var(--mb-wood-line) !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] #screen-game .pit::before { border-color: var(--mb-wood-line) !important; }
html[data-theme="steppe-light"] #screen-game .material-game-bar { background: var(--product-bg-secondary); }
html[data-theme="steppe-light"] #screen-game .match-avatar {
    background: var(--surface-raised) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-subtle) !important;
}
html[data-theme="steppe-light"] #screen-game .match-state-strip #status-text[data-state="your_turn"] { color: var(--success); }
html[data-theme="steppe-light"] #screen-game :is(.game-tool-button--danger, .game-tool-button--danger i) { color: var(--danger); }
html[data-theme="steppe-light"] #screen-game :is(.game-tool-button, .game-panel-close):hover:not(:disabled) {
    background: var(--surface-raised);
    border-color: var(--accent);
}
html[data-theme="steppe-light"] #screen-game .live-evaluation-meter {
    background: var(--text-primary);
    border-color: var(--tp-control-edge);
}
html[data-theme="steppe-light"] #screen-game .live-evaluation-meter > span { background: var(--mb-wood-050); }
html[data-theme="steppe-light"] .match-rating-hero[data-tone="up"] .match-rating-hero__delta { color: var(--success); }
html[data-theme="steppe-light"] .match-rating-hero[data-tone="down"] .match-rating-hero__delta { color: var(--danger); }

/* Secondary training workspace also has a legacy, local dark/glass map. */
html[data-theme="steppe-light"] #screen-ai-coach {
    --coach-bg: var(--product-bg);
    --coach-glass: var(--surface-1);
    --coach-glass-strong: var(--surface-2);
    --coach-glass-border: var(--border-subtle);
    --coach-glass-highlight: transparent;
    --coach-shadow: var(--tp-shadow-xs);
    --coach-line-soft: var(--border-subtle);
    --coach-text: var(--text-primary);
    --coach-muted: var(--text-secondary);
    --coach-accent: var(--accent);
    --glass-blur: 0px;
    background: var(--product-bg) !important;
}
html[data-theme="steppe-light"] #screen-ai-coach .coach-send { color: var(--accent-ink); }

/* ===== Light audit pass: undefined component tokens =====
 * These names are defined only inside dark/Obsidian scopes (#screen-online,
 * #screen-research) or nowhere. Their literal fallbacks are white or near-black,
 * so every consumer rendered dark panels or white text on the light page. */
html[data-theme="steppe-light"] {
    --on-line: var(--border-subtle);
    --on-surface-1: var(--surface-2);
    --on-surface-2: var(--surface-raised);
    --on-text-2: var(--text-secondary);
    --on-text-3: var(--text-subtle);
    --surface-deep: var(--surface-2);
    --page-bg: var(--product-bg);
    --bg-page: var(--product-bg);
    --surface-canvas: var(--product-bg);
    --bg-app: var(--product-bg);
    --arena-line: var(--border-subtle);
    --arena-panel: var(--surface-1);
    --bg-card-hover: var(--surface-2);
    --tp-color-canvas: var(--product-bg);
    --tp-color-surface-muted: var(--surface-2);
    --tp-color-text-secondary: var(--text-secondary);
}

/* ===== Page background and overscroll =====
 * inline-styles.css paints a dark gradient on `html` with !important; the body
 * override above never reached the root, so overscroll, safe areas and PWA
 * insets showed it. The fixed body ornaments are gold/cyan on a dark canvas. */
html[data-theme="steppe-light"] { background: var(--product-bg) !important; }
html[data-theme="steppe-light"] body:not(.game-active)::before,
html[data-theme="steppe-light"] body:not(.game-active)::after { display: none; }

/* ===== Time select =====
 * Legacy liquid-glass group (inline-styles.css) wins over .tp-time-select
 * on specificity, and visual-polish.css hardcodes cream/green text. */
html[data-theme="steppe-light"] body:not(.game-active) .tp-time-select .time-option {
    background: var(--surface-1) !important;
    border: 1px solid var(--tp-control-edge) !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] body:not(.game-active) .tp-time-select .time-option:hover {
    background: var(--surface-2) !important;
}
html[data-theme="steppe-light"] body:not(.game-active) .tp-time-select .time-option.selected {
    background: color-mix(in srgb, var(--accent) 10%, var(--surface-1)) !important;
    border-color: var(--accent) !important;
}
html[data-theme="steppe-light"] .time-option-main { color: var(--text-primary) !important; }
html[data-theme="steppe-light"] .time-option-inc { color: var(--text-secondary) !important; }
html[data-theme="steppe-light"] .time-category-label { color: var(--text-secondary) !important; }
html[data-theme="steppe-light"] .time-option.selected .time-option-check { color: var(--accent-ink); }
html[data-theme="steppe-light"] body:not(.game-active) :is(.start-game-btn, .search-with-time-btn, .search-invite-btn) {
    background: var(--accent) !important;
    border-color: var(--accent) !important;
    color: var(--accent-ink) !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] body:not(.game-active) :is(.start-game-btn, .search-with-time-btn, .search-invite-btn):hover {
    background: var(--accent-hover) !important;
}

/* ===== AI coach =====
 * The loaded sheet is styles/ai-coach-workspace.css: dark composer, white
 * hover/chip fills and a near-black scrim that ignore the --coach-* remap. */
html[data-theme="steppe-light"] #screen-ai-coach .coach-composer:focus-within { border-color: var(--accent); }
html[data-theme="steppe-light"] #screen-ai-coach .coach-composer__action { color: var(--text-secondary); }
html[data-theme="steppe-light"] #screen-ai-coach :is(.coach-history-new, .coach-history-row) { background: var(--surface-2); }
html[data-theme="steppe-light"] #screen-ai-coach :is(
    .coach-history-row, .coach-back, .coach-header-actions button, .coach-header-menu button,
    .coach-plus-menu button):hover { background: var(--surface-raised); }
html[data-theme="steppe-light"] #screen-ai-coach .coach-scrim {
    background: rgba(39, 35, 27, .38);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}
html[data-theme="steppe-light"] body.coach-screen-active:not(#_) #confirm-dialog.confirm-dialog-overlay {
    background: rgba(39, 35, 27, .38) !important;
}
html[data-theme="steppe-light"] body.coach-screen-active:not(#_) #confirm-dialog .confirm-dialog-actions button:not(.is-destructive) {
    background: var(--surface-raised) !important;
}

/* ===== Research center (CSS injected lazily; higher specificity than its rules) ===== */
html[data-theme="steppe-light"] #screen-research.tp-research-center { --surface-raised: var(--surface-1); }
html[data-theme="steppe-light"] #screen-research :is(.research-state, .research-revisions details,
    .research-tree-list details) { background: var(--surface-2); }
html[data-theme="steppe-light"] #screen-research .research-revisions code {
    background: var(--surface-2);
    color: var(--text-primary);
}

/* ===== Centered game dialogs and history table =====
 * Only the pieces that do not already resolve through the --on-* tokens above. */
html[data-theme="steppe-light"] .modal-overlay--centered .modal-sheet :is(button[type="submit"],
    .modal-primary-btn, form > button:last-of-type) {
    background: var(--accent) !important;
    border-color: var(--accent) !important;
    color: var(--accent-ink) !important;
}
html[data-theme="steppe-light"] .game-history-table tbody tr:nth-child(even) { background: var(--surface-2); }
html[data-theme="steppe-light"] .game-history-table th { background: var(--surface-2); }
html[data-theme="steppe-light"] .modal-overlay--centered .modal-sheet { box-shadow: var(--tp-shadow-md); }

/* ===== Online table room panel (milestone.css hardcodes tan-on-dark) ===== */
html[data-theme="steppe-light"] .table-room-tabs { background: var(--surface-2); }
html[data-theme="steppe-light"] .table-room-tabs button.is-active {
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 12%, var(--surface-1));
    border-color: var(--accent);
}
html[data-theme="steppe-light"] :is(.table-room-chat__composer button, .table-room-invite button,
    .table-room-settings__form > button) {
    color: var(--accent-ink);
    background: var(--accent);
    border-color: var(--accent);
}
html[data-theme="steppe-light"] .table-room-status { color: var(--accent); }
html[data-theme="steppe-light"] .table-room-message.is-mine {
    background: color-mix(in srgb, var(--accent) 12%, var(--surface-1));
}

/* ===== Support, tutorial, tournament result: opaque cards on lighter scrims ===== */
html[data-theme="steppe-light"] body:not(.game-active) :is(.support-modal, .tutorial-bubble, .tournament-result-sheet) {
    background: var(--surface-1) !important;
    border: 1px solid var(--border-subtle) !important;
    box-shadow: var(--tp-shadow-md) !important;
    color: var(--text-primary);
}
html[data-theme="steppe-light"] :is(.tutorial-title, .tutorial-text) { color: var(--text-primary) !important; }
html[data-theme="steppe-light"] .tut-dot { background: var(--border-subtle); }
html[data-theme="steppe-light"] .tut-dot.active { background: var(--accent); }
html[data-theme="steppe-light"] :is(.support-modal-overlay, .tutorial-overlay, .avatar-modal-overlay,
    #avatar-modal-overlay.avatar-modal-overlay, #avatar-upload-modal-overlay.avatar-modal-overlay,
    .overlay, .tp-avatar-actions-overlay, .pwa-install-overlay__backdrop) {
    background: rgba(39, 35, 27, .38) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}
html[data-theme="steppe-light"] #end-screen { background: rgba(39, 35, 27, .46) !important; }
html[data-theme="steppe-light"] .game-history-backdrop { background: rgba(39, 35, 27, .38); }

/* ===== Tournament forms and league leftovers ===== */
html[data-theme="steppe-light"] body:not(.game-active) :is(#create-tournament-wrap, #join-code-wrap, #btn-show-join-code) {
    background: var(--surface-1) !important;
    border: 1px solid var(--border-subtle) !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] body:not(.game-active) .league-loading {
    background: var(--surface-2) !important;
    border-color: var(--border-subtle) !important;
    box-shadow: none !important;
}
/* Metal glyphs and rank-change badges: the dark-theme pastels fail on light. */
html[data-theme="steppe-light"] .lb-rank__trophy.is-gold { color: #8A6212; }
html[data-theme="steppe-light"] .lb-rank__trophy.is-silver { color: #6F7681; }
html[data-theme="steppe-light"] .lb-rank__trophy.is-bronze { color: #8A5426; }
html[data-theme="steppe-light"] .lb-move.is-up {
    color: var(--success);
    background: color-mix(in srgb, var(--success) 14%, var(--surface-1));
}
html[data-theme="steppe-light"] .lb-move.is-down {
    color: var(--danger);
    background: color-mix(in srgb, var(--danger) 12%, var(--surface-1));
}

/* ===== PWA install, notifications, home chip ===== */
html[data-theme="steppe-light"] :is(.pwa-install-promo__action, .pwa-install-steps li::before,
    .pwa-install-sheet__done) { color: var(--accent-ink); }
html[data-theme="steppe-light"] :is(.pwa-install-promo, .pwa-install-sheet) { box-shadow: var(--tp-shadow-md); }
html[data-theme="steppe-light"] .tp-notification-badge { border-color: var(--tp-color-header); }
html[data-theme="steppe-light"] .tp-dash-match__player--you .tp-dash-match__mark {
    background: color-mix(in srgb, var(--accent) 14%, var(--surface-1));
}

/* ===== Toast: created with inline styles only, no type attribute to key on ===== */
html[data-theme="steppe-light"] #sm-toast {
    background: var(--text-primary) !important;
    color: var(--surface-1) !important;
    box-shadow: var(--tp-shadow-md);
}

/* ===== Floating mobile nav shadow ===== */
html[data-theme="steppe-light"] .tp-mobile-nav { box-shadow: var(--tp-shadow-md); }

/* ===== Focus and press feedback ===== */
html[data-theme="steppe-light"] :is(summary, [contenteditable], label):focus-visible {
    outline: 2px solid var(--tp-color-focus) !important;
    outline-offset: 3px;
}
@media (prefers-reduced-motion: no-preference) {
    html[data-theme="steppe-light"] :is(.tp-mobile-nav__item, .time-option, .league-pool-tab, .tp-dash-tile):active {
        transform: scale(.97);
        transition: transform 100ms ease-out;
    }
}

/* ===== Accessibility media ===== */
@media (prefers-contrast: more) {
    html[data-theme="steppe-light"] {
        --border-subtle: #8F887A;
        --text-secondary: #4A473F;
        --text-subtle: #4A473F;
    }
}
@media (prefers-reduced-transparency: reduce) {
    html[data-theme="steppe-light"] :is(.tp-mobile-nav,
        #screen-ai-coach .coach-scrim) {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }
}
@media (pointer: coarse) {
    html[data-theme="steppe-light"] #web-auth-screen .sm-auth-lang .lang-btn { min-height: 44px; }
    html[data-theme="steppe-light"] #screen-online .tp-online__tab { height: auto; min-height: 44px; }
    html[data-theme="steppe-light"] .tp-section-heading > .tp-button { min-height: 44px; }
}

/* First-run tutorial primary action: legacy gold-gradient button. */
html[data-theme="steppe-light"] body:not(.game-active) .tutorial-next-btn {
    background: var(--tp-color-primary) !important;
    color: var(--tp-color-primary-ink) !important;
    border-color: var(--tp-color-primary) !important;
    text-shadow: none !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] body:not(.game-active) .tutorial-next-btn:hover { background: var(--tp-color-primary-hover) !important; }

/* Rating toast: one calm notification. Critically damped entrance (no
 * overshoot, nothing was flicked), tone carried by one tinted glyph. */
html[data-theme="steppe-light"] #rating-toast {
    top: max(16px, calc(env(safe-area-inset-top, 0px) + 12px)) !important;
    left: 50% !important;
    gap: 12px;
    min-width: 0;
    padding: 12px 18px 12px 12px !important;
    background: var(--surface-1) !important;
    border: 1px solid var(--border-subtle) !important;
    border-radius: 16px !important;
    box-shadow: var(--tp-shadow-md) !important;
    opacity: 0;
    transform: translate(-50%, -12px) scale(.96) !important;
    transition: transform 320ms var(--tp-ease-out), opacity 200ms var(--tp-ease-out) !important;
}
html[data-theme="steppe-light"] #rating-toast.show {
    opacity: 1;
    transform: translate(-50%, 0) scale(1) !important;
}
html[data-theme="steppe-light"] #rating-toast .rating-toast-icon {
    display: grid;
    place-items: center;
    flex: 0 0 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 18px;
    font-weight: 700;
    line-height: 1;
    color: var(--success);
    background: color-mix(in srgb, var(--success) 14%, var(--surface-1));
}
html[data-theme="steppe-light"] #rating-toast[data-tone="down"] .rating-toast-icon {
    color: var(--danger);
    background: color-mix(in srgb, var(--danger) 12%, var(--surface-1));
}
html[data-theme="steppe-light"] #rating-toast .rating-toast-body { gap: 0; }
html[data-theme="steppe-light"] #rating-toast .rating-toast-label {
    font-size: 11px !important;
    font-weight: 600;
    letter-spacing: .04em;
    color: var(--text-secondary) !important;
}
html[data-theme="steppe-light"] #rating-toast .rating-toast-value {
    font-size: 22px !important;
    line-height: 1.15;
    letter-spacing: -.01em;
    font-variant-numeric: tabular-nums;
}
html[data-theme="steppe-light"] #rating-toast .rating-toast-value.positive { color: var(--success) !important; }
html[data-theme="steppe-light"] #rating-toast .rating-toast-value.negative { color: var(--danger) !important; }
html[data-theme="steppe-light"] #rating-toast .rating-toast-current {
    margin-top: 0;
    font-size: 12px !important;
    color: var(--text-secondary) !important;
    font-variant-numeric: tabular-nums;
}

/* First-run tutorial: one idea per step, hierarchy from weight and tracking,
 * a stable card height so only the content changes between steps. */
html[data-theme="steppe-light"] #tutorial-overlay .tutorial-bubble {
    gap: 0;
    max-width: 380px;
    padding: 24px 24px 20px !important;
    border-radius: 20px !important;
    text-align: center;
}
html[data-theme="steppe-light"] #tutorial-overlay .tutorial-step-dots { gap: 6px; margin: 0; }
html[data-theme="steppe-light"] #tutorial-overlay .tut-dot {
    width: 6px;
    height: 6px;
    border-radius: 3px;
    transform: none;
    transition: width 220ms var(--tp-ease-out), background-color 220ms var(--tp-ease-out);
}
html[data-theme="steppe-light"] #tutorial-overlay .tut-dot.active { width: 18px; }
html[data-theme="steppe-light"] #tutorial-overlay .tutorial-icon {
    display: grid;
    place-items: center;
    width: 64px;
    height: 64px;
    margin: 24px auto 16px;
    border-radius: 50%;
    font-size: 26px;
    line-height: 1;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 10%, var(--surface-1));
}
html[data-theme="steppe-light"] #tutorial-overlay .tutorial-title {
    margin: 0;
    font-size: 22px !important;
    font-weight: 700 !important;
    line-height: 1.15;
    letter-spacing: -.02em;
}
html[data-theme="steppe-light"] #tutorial-overlay .tutorial-text {
    max-width: 32ch;
    min-height: 4.5em;
    margin: 8px auto 0;
    font-size: 15px !important;
    line-height: 1.5;
    opacity: 1;
    color: var(--text-secondary) !important;
}
html[data-theme="steppe-light"] #tutorial-overlay .tutorial-btns {
    align-items: center;
    gap: 8px;
    margin-top: 20px;
}
html[data-theme="steppe-light"] #tutorial-overlay .tutorial-skip-btn {
    flex: 0 0 auto;
    min-height: 48px;
    padding: 0 16px !important;
    border: 0 !important;
    border-radius: 12px !important;
    background: transparent !important;
    color: var(--text-secondary) !important;
    font-size: 15px !important;
    font-weight: 600 !important;
    box-shadow: none !important;
}
html[data-theme="steppe-light"] #tutorial-overlay .tutorial-skip-btn:hover { background: var(--surface-2) !important; }
html[data-theme="steppe-light"] #tutorial-overlay .tutorial-next-btn {
    flex: 1 1 auto;
    min-height: 48px;
    padding: 0 20px !important;
    border-radius: 12px !important;
    font-family: inherit !important;
    font-size: 15px !important;
    font-weight: 700 !important;
    letter-spacing: 0 !important;
}
@media (prefers-reduced-motion: no-preference) {
    html[data-theme="steppe-light"] #tutorial-overlay .tutorial-bubble {
        animation: steppeTutorialIn 240ms var(--tp-ease-out) both;
    }
    html[data-theme="steppe-light"] #tutorial-overlay .tutorial-bubble.is-step-enter :is(.tutorial-icon, .tutorial-title, .tutorial-text) {
        animation: steppeTutorialStep 220ms var(--tp-ease-out) both;
    }
    html[data-theme="steppe-light"] #tutorial-overlay .tutorial-bubble.is-step-enter .tutorial-title { animation-delay: 30ms; }
    html[data-theme="steppe-light"] #tutorial-overlay .tutorial-bubble.is-step-enter .tutorial-text { animation-delay: 60ms; }
    html[data-theme="steppe-light"] #tutorial-overlay :is(.tutorial-skip-btn, .tutorial-next-btn) {
        transition: transform var(--tp-motion-press) ease-out, background-color 140ms ease-out;
    }
    html[data-theme="steppe-light"] #tutorial-overlay :is(.tutorial-skip-btn, .tutorial-next-btn):active { transform: scale(.97); }
}
@media (prefers-reduced-motion: reduce) {
    html[data-theme="steppe-light"] #rating-toast,
    html[data-theme="steppe-light"] #rating-toast.show {
        transform: translate(-50%, 0) !important;
        transition: opacity 200ms ease !important;
    }
    html[data-theme="steppe-light"] #tutorial-overlay .tut-dot { transition: none; }
}
@media (min-width: 768px) {
    html[data-theme="steppe-light"] #tutorial-overlay { align-items: center !important; }
}
@keyframes steppeTutorialIn {
    from { opacity: 0; transform: scale(.96); }
    to { opacity: 1; transform: none; }
}
@keyframes steppeTutorialStep {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: none; }
}

/* WCAG 1.4.3 contrast (>= 4.5:1), same hues, minimal darkening. */
html[data-theme="steppe-light"] #tp-app-shell.tp-shell .tp-desktop-nav__item:not(.is-active) { color: #5b584f; }
html[data-theme="steppe-light"] .tp-mobile-nav__item.is-active > span:not(.nav-badge) { color: #15615e; }
html[data-theme="steppe-light"] #web-auth-screen .sm-auth-lang .lang-btn.active { color: #166662; }
html[data-theme="steppe-light"] #tp-app-shell .tp-profile-trigger__name { color: #5b584f; }
html[data-theme="steppe-light"] #tp-app-shell .tp-profile-trigger .tp-rating-badge { color: #15625f; }
@media (max-width: 900px) {
    html[data-theme="steppe-light"] #screen-puzzles .tp-puzzle-continue__copy small { opacity: 0.85; }
}