/* Desktop layout is unchanged. These adaptations are only enabled on iPadOS. */
.ipad-only{display:none!important}
.sandbox-levels{display:flex;gap:2px;padding:3px;border:1px solid #d7ccdf;border-radius:10px;background:#eee8f2;flex:none}
.sandbox-levels button{border:0;border-radius:7px;padding:7px 10px;color:#6e5b7b;background:none;font-size:12px;font-weight:800;min-height:32px}
.sandbox-levels button[aria-pressed=true]{background:#fffdf9;color:#44304e;box-shadow:0 1px 4px #382b411b}
.sandbox-levels button:focus-visible{outline:2px solid #9a80b2;outline-offset:1px}
.is-sandbox .match-top-right,.is-sandbox .rain-hud-right{flex-wrap:wrap;justify-content:flex-end;gap:12px}
.sandbox-levels+.match-timer{font-size:13px}
.is-ipad{overscroll-behavior:none;-webkit-text-size-adjust:100%;text-size-adjust:100%}
.is-ipad body{min-width:0;overflow:hidden}
.is-ipad .app{position:fixed;top:var(--visible-top,0px);left:0;width:min(100%,var(--visible-width,100vw));height:var(--visible-height,100dvh);padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);grid-template-columns:224px minmax(0,1fr);grid-template-rows:minmax(0,1fr)}
.is-ipad .app.sidebar-collapsed,.is-ipad .app.studying{grid-template-columns:minmax(0,1fr)}
.is-ipad .app{min-height:0}
.is-ipad .main{min-height:0;height:100%;overflow:auto;overscroll-behavior:contain}
.is-ipad .study-cards .study-card.target-card{min-height:0}.is-ipad .match-wrap:not(.decision-wrap) .match-feedback{height:auto}
.is-ipad .app.studying .main{overflow:hidden}
.is-ipad .app.studying .main>#content{height:100%;overflow:auto;overscroll-behavior:contain}
.is-ipad .sidebar{height:100%;min-height:0}.is-ipad .brand{height:66px;padding:0 14px}
.is-ipad .tree{padding:4px 8px 100px;overflow:auto}.is-ipad .tree-row{height:42px;font-size:14px;touch-action:manipulation}
.is-ipad .tree-node{display:flex;align-items:center;min-width:0}.is-ipad .tree-node .tree-row{min-width:0;flex:1}
.is-ipad .ipad-only{display:flex!important}.is-ipad .ipad-node-menu{flex:none;width:38px;min-height:40px;align-items:center;justify-content:center;background:none;border:0;border-radius:9px;color:#715942;font-size:22px}
.is-ipad .ipad-create{margin:0 12px 7px;min-height:42px;align-items:center;justify-content:center;gap:8px;border:1px solid #d5c7b6;border-radius:10px;background:#fffdf9;color:#62503d;font-weight:750;font-size:13px}
.is-ipad .ipad-card-menu{position:absolute;right:4px;top:0;z-index:3;width:42px;height:36px;align-items:center;justify-content:center;border:0;background:#fffdf9ed;border-radius:7px;font-size:21px;color:#715942}
.is-ipad .sheet-save,.is-ipad .draft-cancel{width:40px;height:36px;bottom:0;z-index:4}.is-ipad .sheet-save svg{width:19px;height:19px}
.is-ipad .settings-button{width:44px;height:44px;bottom:12px;top:auto;right:auto;left:14px;font-size:24px}.is-ipad .sidebar-toggle,.is-ipad .sidebar-reveal{width:40px;height:40px}
.is-ipad .context-menu{max-width:calc(100vw - 16px);max-height:calc(var(--visible-height,100dvh) - 24px);overflow-y:auto}.is-ipad .context-menu button{min-height:44px;height:auto;font-size:15px;padding:11px 14px}
.is-ipad .dialog-scrim,.is-ipad .cloud-panel{top:var(--visible-top,0px);bottom:auto;height:var(--visible-height,100dvh);padding:12px}
.is-ipad .dialog{max-height:calc(var(--visible-height,100dvh) - 24px);padding:22px;overscroll-behavior:contain}.is-ipad .cloud-card{max-height:100%;overflow:auto}
.is-ipad input,.is-ipad textarea,.is-ipad select{font-size:16px}.is-ipad button{touch-action:manipulation}.is-ipad .field input,.is-ipad .field textarea{font-size:16px}
.is-ipad .view{padding:18px 22px 10px}.is-ipad .view .location-path{margin-bottom:12px}.is-ipad .view .hero{margin-bottom:16px;gap:12px}.is-ipad .view .phase-folder-board{width:min(100%,370px)}
.is-ipad .hero h1{font-size:clamp(25px,3vw,34px)}.is-ipad .hero-tools{gap:9px}.is-ipad .games-menu{left:auto;right:0}
.is-ipad .view.is-gallery-expanded .vocab-gallery{grid-template-columns:1fr}.is-ipad .phase-folder{touch-action:manipulation}
.is-ipad .match-wrap:not(.decision-wrap),.is-ipad .rain-run,.is-ipad .study-wrap{width:100%;min-height:0;max-width:1100px;padding:16px 24px;height:100%;box-sizing:border-box}
/* Truth and spelling deliberately inherit the PC layout: natural card height,
   centered 800px column, and answer buttons directly below the word pair. */
.is-ipad .decision-wrap{min-height:100%}
.is-ipad .match-wrap:not(.match-lobby):not(.match-results):not(.decision-wrap){display:flex;flex-direction:column;gap:10px}
.is-ipad .match-wrap:not(.decision-wrap) .match-top{flex:none;margin:0;gap:10px;min-height:40px}.is-ipad .match-wrap:not(.decision-wrap) .match-top-right{gap:12px}.is-ipad .match-wrap:not(.decision-wrap) .match-exit{min-height:40px}
.is-ipad .match-wrap:not(.decision-wrap) .match-title{margin:0;flex:none}.is-ipad .match-wrap:not(.decision-wrap) .match-title h1{font-size:27px;margin:0;line-height:1.2}.is-ipad .match-wrap:not(.decision-wrap) .match-round-head{margin:0;min-height:24px;flex:none}.is-ipad .match-columns{flex:1;min-height:0;gap:14px}.is-ipad .match-column{min-height:0;gap:8px}
.is-ipad .match-tile{flex:1;min-height:42px;font-size:clamp(15px,2vw,22px);padding:8px 13px;line-height:1.2}.is-ipad .match-wrap:not(.decision-wrap) .match-feedback{margin:0;min-height:22px;font-size:13px}.is-ipad .match-wrap:not(.decision-wrap) .match-footer{margin:0;flex:none;min-height:22px}
.is-ipad .match-wrap:not(.decision-wrap) .match-pair-progress{margin:0;flex:none}.is-ipad .match-wrap.is-sandbox .match-pair-progress{display:none}
.is-ipad .match-lobby,.is-ipad .match-results{height:auto;min-height:100%;padding-bottom:24px;overflow:visible}.is-ipad .match-lobby .match-top{margin-bottom:18px}
.is-ipad .match-lobby .match-mode-grid{margin-top:18px;gap:12px}
/* Preserve the normal vertical cards and centered play button; only scale spacing. */
.is-ipad .match-lobby .difficulty-option .match-mode-card{padding:22px 18px;gap:14px;min-height:300px}
.is-ipad .match-lobby .match-mode-card h2{font-size:clamp(24px,3vw,34px)}
.is-ipad .memory-grid{flex:1;min-height:0;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-rows:repeat(var(--memory-rows,4),minmax(0,1fr));gap:9px}.is-ipad .memory-grid.is-large{grid-template-columns:repeat(5,minmax(0,1fr))}.is-ipad .memory-card{min-height:44px;height:auto;padding:8px 8px 18px;aspect-ratio:auto;gap:4px}.is-ipad .memory-card strong{font-size:clamp(14px,1.8vw,20px)}
.is-ipad .memory-preview{margin:0;min-height:32px;flex:none}.is-ipad .memory-preview button{min-height:40px}.is-ipad .memory-progress{margin:0;flex:none}
.is-ipad .pointer-prompts{gap:10px;flex:none}.is-ipad .pointer-prompt,.is-ipad .pointer-prompts.is-dual .pointer-prompt{padding:11px 14px}.is-ipad .pointer-prompt strong{font-size:24px}.is-ipad .pointer-prompt .match-column-label{margin-bottom:4px}
.is-ipad .pointer-stage{flex:1;min-height:150px;height:auto;margin:0}.is-ipad .pointer-window{inset:40px 0 35px}.is-ipad .pointer-center{top:34px;bottom:29px}.is-ipad .pointer-marker{top:10px}.is-ipad .pointer-stage-caption{bottom:7px;font-size:12px}.is-ipad .pointer-controls{margin:0;flex:none}.is-ipad .pointer-stop.primary{height:46px}
.is-ipad .rain-run{display:flex;flex-direction:column;gap:9px}.is-ipad .rain-hud{width:100%;gap:10px;flex:none}.is-ipad .rain-heading h1{font-size:27px}.is-ipad .rain-hud-right{gap:10px}.is-ipad .rain-status{margin:0;flex:none;min-height:27px}.is-ipad .rain-stage{flex:1;min-height:150px;height:auto;width:100%;margin:0}
.is-ipad .rain-dock{margin:0;width:100%;flex:none}.is-ipad .rain-input-label{margin:0 0 3px}.is-ipad .rain-input-row{padding:4px 7px 4px 13px}.is-ipad .rain-submit{height:40px;min-width:42px}.is-ipad .rain-choices{min-height:44px;gap:8px}.is-ipad .rain-choice{padding:8px;font-size:16px;min-height:44px}.is-ipad .rain-choice-target{margin-bottom:4px}
.is-ipad .rain-dock{max-width:none}
/* Card-height-relative travel keeps the whole word visible in a short keyboard viewport. */
.is-ipad .rain-drop{transform:translate(-50%,0)}
.is-ipad.viewport-compact .rain-run{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto minmax(110px,1fr) auto;gap:6px 12px}
.is-ipad.viewport-compact .rain-hud{grid-column:1;grid-row:1;min-width:0}
.is-ipad.viewport-compact .rain-status{grid-column:2;grid-row:1;flex-wrap:wrap;justify-content:flex-end;align-content:center;gap:4px;font-size:10px;padding-right:8px}
.is-ipad.viewport-compact .rain-status time{margin-left:0;font-size:11px}
.is-ipad.viewport-compact .rain-status span{padding:3px 5px}
.is-ipad.viewport-compact .rain-stage{grid-column:1/-1;grid-row:2;min-height:0}
.is-ipad.viewport-compact .rain-dock{grid-column:1/-1;grid-row:3}
.is-ipad.viewport-compact .rain-drops,.is-ipad.viewport-compact .rain-effects{inset:8px 8px 25px}
.is-ipad.viewport-compact .rain-floor{bottom:24px}
.is-ipad.viewport-compact .rain-heading small{display:none}
.is-ipad.viewport-compact .rain-heading h1 span{font-size:11px}
.is-ipad.viewport-compact .rain-points strong{font-size:21px}
.is-ipad.viewport-compact .rain-points span{display:none}
.is-ipad.viewport-compact .rain-input{font-size:17px;padding:4px 0}
@media(max-width:700px){.is-ipad.viewport-compact .rain-run{grid-template-rows:auto auto minmax(100px,1fr) auto;gap:5px}.is-ipad.viewport-compact .rain-hud{grid-column:1/-1}.is-ipad.viewport-compact .rain-status{grid-column:1/-1;grid-row:2;justify-content:flex-start}.is-ipad.viewport-compact .rain-status time{margin-left:auto}.is-ipad.viewport-compact .rain-stage{grid-row:3}.is-ipad.viewport-compact .rain-dock{grid-row:4}}
.is-ipad .study-wrap{display:flex;flex-direction:column;gap:10px;max-width:1050px}.is-ipad .study-top{gap:10px;min-height:40px;flex:none}.is-ipad .study-cards{flex:1;min-height:0;grid-template-columns:1fr 1fr;align-items:center;gap:14px;margin:12px 0;container-type:size}
.is-ipad .study-card-stack{width:min(100%,520px,150cqh);height:auto;min-height:0;aspect-ratio:3/2}.is-ipad .study-cards .study-card{width:100%;height:100%;aspect-ratio:3/2;min-height:0;padding:0}.is-ipad .study-card-body .study-card-copy{overflow:auto}.is-ipad .study-cards+.card-footer{margin:0;flex:none;min-height:44px;padding:0}.is-ipad .card-footer button{min-height:44px}.is-ipad .study-top .segmented button{min-height:36px}
.is-ipad .study-card-body .answer-input{font-size:clamp(18px,3vw,28px);min-height:40px;line-height:1.2}.is-ipad .study-card-header .phase-marker{top:-18px;font-size:16px}
.is-ipad.viewport-compact .match-wrap:not(.decision-wrap),.is-ipad.viewport-compact .rain-run,.is-ipad.viewport-compact .study-wrap{padding:8px 14px;gap:6px}
.is-ipad.viewport-compact .match-wrap:not(.decision-wrap) .match-top{min-height:36px}.is-ipad.viewport-compact .match-wrap:not(.decision-wrap) .match-title h1,.is-ipad.viewport-compact .rain-heading h1{font-size:21px}.is-ipad.viewport-compact .match-wrap:not(.decision-wrap) .match-round-head{min-height:18px;font-size:11px}
.is-ipad.viewport-compact .match-column{gap:5px}.is-ipad.viewport-compact .match-tile{font-size:15px;padding:5px 8px}.is-ipad.viewport-compact .match-wrap:not(.decision-wrap) .match-feedback{min-height:18px}.is-ipad.viewport-compact .match-wrap:not(.decision-wrap) .match-footer{min-height:18px;font-size:11px}
.is-ipad.viewport-compact .pointer-stage{min-height:110px}.is-ipad.viewport-compact .pointer-prompt,.is-ipad.viewport-compact .pointer-prompts.is-dual .pointer-prompt{padding:7px 12px}.is-ipad.viewport-compact .pointer-prompt strong{font-size:20px}.is-ipad.viewport-compact .rain-stage{min-height:110px}.is-ipad.viewport-compact .rain-drop{padding:6px 7px}.is-ipad.viewport-compact .rain-drop strong{font-size:15px}
.is-ipad.viewport-compact .study-card-description{font-size:12px}.is-ipad.viewport-compact .study-progress{margin:0}.is-ipad.viewport-compact .memory-grid{gap:5px}.is-ipad.viewport-compact .memory-tile{padding:5px;font-size:14px}
@media(max-width:760px){.is-ipad .app{grid-template-columns:176px minmax(0,1fr)}.is-ipad .brandname{font-size:15px}.is-ipad .view{padding:12px 14px}.is-ipad .hero{flex-wrap:wrap}.is-ipad .hero-tools{margin-left:auto}.is-ipad .progress-pill{width:48px;height:48px;min-width:48px}.is-ipad .hero-tools .study-launch{height:46px}.is-ipad .hero-tools .study-launch .primary{height:44px;min-width:92px}.is-ipad .vocab-pair{grid-template-columns:1fr;gap:12px}.is-ipad .add-vocab-card{width:100%}.is-ipad .tree-row{font-size:13px}}
@media(max-width:560px){.is-ipad .app{grid-template-columns:1fr;grid-template-rows:148px minmax(0,1fr)}.is-ipad .sidebar{display:grid;grid-template-columns:1fr 54px;grid-template-rows:44px 44px 1fr;min-height:0}.is-ipad .brand{grid-column:1;grid-row:1;height:44px}.is-ipad .ipad-create{grid-column:1;grid-row:2;margin:0 10px;min-height:40px}.is-ipad .tree{grid-column:1/-1;grid-row:3;max-height:none;padding:0 8px}.is-ipad .settings-button{top:0;bottom:auto;right:5px;left:auto}.is-ipad .app.studying,.is-ipad .app.sidebar-collapsed{grid-template-rows:minmax(0,1fr)}.is-ipad .sandbox-levels button{padding:6px 7px;font-size:11px}.is-ipad .match-top-right{flex-wrap:wrap;gap:6px}.is-ipad .study-cards{gap:8px}.is-ipad .match-timer{font-size:12px}.is-ipad .rain-hud{flex-wrap:wrap}.is-ipad .rain-hud-right{margin-left:auto}.is-ipad .rain-variants button{padding:9px 12px}}