/* Marbleslides game UI */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-soft: #dbeafe;
    --green: #0f9f6e;
    --green-soft: #d1fae5;
    --orange: #d97706;
    --orange-soft: #fef3c7;
    --red: #dc2626;
    --ink: #111827;
    --muted: #667085;
    --line: #d9e1ec;
    --panel: #ffffff;
    --surface: #f4f7fb;
    --surface-strong: #e8eef7;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --accent: #f59e0b;
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #0f9f6e 100%);
    --radius: 8px;
    --radius-md: 8px;
    --radius-lg: 8px;
    --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.08);
    --shadow-md: 0 16px 42px rgba(16, 24, 40, 0.12);
    --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', Consolas, monospace;
    --mono: var(--font-mono);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html,
body {
    width: 100%;
    min-height: 100%;
}

body {
    color: var(--ink);
    background:
        linear-gradient(180deg, rgba(37, 99, 235, 0.08), transparent 260px),
        var(--surface);
    font-family: var(--font);
}

/* Game page only — locks viewport, no scroll */
body.game-page {
    height: 100vh;
    overflow: hidden;
}

body.game-page .seo-footer {
    display: none;
}

/* The UI was designed at 80% browser zoom — replicate that with CSS zoom */
@media (min-width: 901px) {
    html {
        zoom: 0.8;
    }

    body.game-page,
    body.game-page .app-shell {
        height: calc(100vh / 0.8);
    }
}

button,
input {
    font: inherit;
}

button {
    border: 0;
}

button,
summary,
a {
    cursor: pointer;
}

button:focus-visible,
input:focus-visible,
summary:focus-visible,
a:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.28);
    outline-offset: 2px;
}

a {
    color: inherit;
}

.app-shell {
    height: 100vh;
    display: grid;
    grid-template-rows: 38px minmax(0, 1fr);
    gap: 5px;
    padding: 5px;
    overflow: hidden;
}

.top-bar {
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 3px 8px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.94);
    box-shadow: var(--shadow-sm);
}

.brand {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    text-decoration: none;
}

.logo-img {
    width: 30px;
    height: 30px;
    flex: 0 0 auto;
    border: 1px solid var(--line);
    border-radius: 8px;
    object-fit: cover;
}

.brand-copy {
    min-width: 0;
    display: grid;
    gap: 1px;
}

.brand-copy strong {
    font-size: 17px;
    font-weight: 800;
    line-height: 1.05;
}

.brand-copy span {
    color: var(--muted);
    font-size: 13px;
    font-weight: 650;
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ghost-link {
    min-height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--gray-700);
    background: white;
    font-size: 14px;
    font-weight: 750;
    text-decoration: none;
}

.ghost-link:hover {
    border-color: #b9c7da;
    background: #f8fbff;
}

.game-layout {
    min-height: 0;
    display: grid;
    grid-template-columns: clamp(270px, 19vw, 310px) minmax(620px, 1fr) clamp(134px, 9vw, 165px);
    gap: 6px;
}

.left-panel,
.center-panel,
.right-panel {
    min-height: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow-sm);
}

.control-rail {
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    overflow: hidden;
}

.mode-rail {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 8px;
    overflow-y: auto;
}

.rail-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--line);
}

.rail-header h1 {
    font-size: 14px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.eyebrow {
    margin-bottom: 2px;
    color: var(--primary);
    font-size: 12px;
    font-weight: 850;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.streak-pill {
    flex: 0 0 auto;
    min-width: 0;
    padding: 5px 10px;
    border: 1px solid #a7f3d0;
    border-radius: 6px;
    color: #047857;
    background: var(--green-soft);
    text-align: center;
    font-size: 12px;
    font-weight: 850;
    white-space: nowrap;
}

.mode-section,
.equation-composer,
.launcher-settings {
    flex-shrink: 0;
    display: grid;
    gap: 5px;
}

.section-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.stacked-label {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
}

.section-label label,
.form-group label {
    color: var(--gray-700);
    font-size: 13px;
    font-weight: 850;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.section-label span {
    color: var(--muted);
    font-size: 13px;
    font-weight: 750;
}

.section-label strong {
    color: var(--ink);
}

.mode-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
}

.mode-card {
    min-height: 54px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 3px;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--gray-700);
    background: white;
    text-align: left;
    transition: background 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}

.mode-card strong {
    color: var(--ink);
    font-size: 14px;
    font-weight: 850;
    line-height: 1.1;
}

.mode-card span {
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.2;
}

.mode-card.daily {
    grid-column: auto;
    min-height: 46px;
}

.mode-card:hover {
    border-color: #b9c7da;
    background: #f8fbff;
}

.mode-card.active {
    border-color: var(--primary);
    background: var(--primary-soft);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.equation-input-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 54px;
    gap: 6px;
}

.eq-field {
    width: 100%;
    min-height: 38px;
    padding: 0 10px;
    border: 2px solid var(--line);
    border-radius: 7px;
    color: var(--ink);
    background: white;
    font-family: var(--mono);
    font-size: 16px;
    font-weight: 650;
}

.eq-field:focus {
    border-color: var(--primary);
    outline: 0;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.btn-add,
.btn-cancel-edit,
.btn-launch,
.btn-small,
.keyboard-action,
.keyboard-key,
.keyboard-tab,
.edit-btn,
.remove-btn {
    cursor: pointer;
    transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.btn-add {
    min-height: 38px;
    border-radius: 7px;
    color: white;
    background: var(--primary);
    font-size: 14px;
    font-weight: 850;
}

.btn-add:hover,
.btn-launch:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-cancel-edit {
    min-height: 34px;
    width: 100%;
    border: 1px solid #f5c2c7;
    border-radius: 8px;
    color: #991b1b;
    background: #fff1f2;
    font-size: 15px;
    font-weight: 800;
}

.btn-cancel-edit:hover {
    background: #ffe4e6;
}

.eq-section {
    min-height: 60px;
    flex: 0 1 auto;
    max-height: 200px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.eq-list {
    display: flex;
    flex-direction: column;
    gap: 7px;
    min-height: 0;
    flex: 1 1 0;
    max-height: none;
    overflow-y: auto;
    padding-right: 2px;
}

.empty-state,
.no-eq {
    min-height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    border: 1px dashed #b9c7da;
    border-radius: 7px;
    color: var(--muted);
    background: var(--surface);
    text-align: center;
    font-size: 13px;
    font-weight: 700;
}

.equation-item {
    display: grid;
    grid-template-columns: 10px minmax(0, 1fr) auto;
    align-items: center;
    gap: 9px;
    padding: 9px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: white;
}

.equation-item.editing {
    border-color: var(--primary);
    background: #f3f8ff;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.equation-color {
    width: 10px;
    height: 32px;
    border-radius: 999px;
}

.equation-text {
    min-width: 0;
    overflow: hidden;
    color: var(--ink);
    font-family: var(--mono);
    font-size: 15px;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.equation-buttons {
    display: flex;
    align-items: center;
    gap: 5px;
}

.edit-btn,
.remove-btn {
    min-width: 34px;
    height: 28px;
    padding: 0 8px;
    border-radius: 7px;
    color: var(--gray-700);
    background: var(--surface);
    font-size: 13px;
    font-weight: 800;
}

.edit-btn:hover {
    color: var(--primary-dark);
    background: var(--primary-soft);
}

.remove-btn:hover {
    color: white;
    background: var(--red);
}

.coord-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.coord-box {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 7px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--surface);
}

.coord-box span {
    width: 24px;
    height: 24px;
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    color: var(--primary-dark);
    background: white;
    font-family: var(--mono);
    font-size: 16px;
    font-weight: 850;
}

.coord-box input {
    min-width: 0;
    width: 100%;
    border: 0;
    color: var(--ink);
    background: transparent;
    font-family: var(--mono);
    font-size: 17px;
    font-weight: 650;
    text-align: center;
}

.coord-box input:focus {
    outline: 0;
}

.keyboard-drawer {
    min-height: 0;
    flex: 1 1 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    overflow: hidden;
}

.keyboard-drawer[open] {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#mathKeyboardMount {
    min-height: 0;
    display: flex;
    flex: 1;
    overflow: hidden;
}

.keyboard-drawer summary {
    flex-shrink: 0;
    min-height: 34px;
    display: flex;
    align-items: center;
    padding: 0 10px;
    color: var(--gray-700);
    background: white;
    font-size: 15px;
    font-weight: 850;
    list-style: none;
}

.keyboard-drawer summary::-webkit-details-marker {
    display: none;
}

.keyboard-drawer summary::after {
    content: "Show";
    margin-left: auto;
    color: var(--muted);
    font-size: 12px;
}

.keyboard-drawer[open] summary::after {
    content: "Hide";
}

.math-keyboard {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    border-top: 1px solid var(--line);
    background: var(--surface);
}

.math-preview {
    flex-shrink: 0;
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px 10px;
    border-bottom: 1px solid var(--line);
    background: white;
    color: var(--ink);
    font-size: 16px;
    overflow: hidden;
}

.math-preview .preview-placeholder {
    color: var(--muted);
    font-size: 13px;
    font-style: normal;
    font-weight: 700;
}

.keyboard-tabs {
    flex-shrink: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 4px;
    padding: 5px;
    border-bottom: 1px solid var(--line);
}

.keyboard-tab {
    min-height: 34px;
    border: 1px solid transparent;
    border-radius: 7px;
    color: var(--muted);
    background: transparent;
    font-size: 15px;
    font-weight: 850;
}

.keyboard-tab.active {
    border-color: var(--line);
    color: var(--primary-dark);
    background: white;
}

.keyboard-panel-container {
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.keyboard-panel {
    display: none;
    height: 100%;
    max-height: none;
    padding: 7px;
    overflow-y: auto;
}

.keyboard-panel.active {
    display: block;
}

.key-group {
    margin-bottom: 8px;
}

.key-group:last-child {
    margin-bottom: 0;
}

.key-group-title {
    margin-bottom: 5px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 850;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.keys-container {
    display: grid;
    gap: 5px;
}

.keys-container.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.keys-container.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.keys-container.grid-5 {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.keyboard-key {
    min-height: 36px;
    padding: 5px 4px;
    border: 1px solid var(--line);
    border-radius: 7px;
    color: var(--ink);
    background: white;
    font-family: var(--mono);
    font-size: 15px;
    font-weight: 700;
}

.keyboard-key:hover {
    border-color: #b9c7da;
    background: #f8fbff;
}

.keyboard-key:active {
    transform: translateY(1px);
}

.keyboard-key.key-operator,
.keyboard-key.key-power,
.keyboard-key.key-function,
.keyboard-key.key-template {
    color: var(--primary-dark);
    background: #f3f8ff;
}

.keyboard-key.key-variable {
    color: #087f5b;
    background: #f0fdf4;
}

.keyboard-key.key-constant {
    color: #8a4b08;
    background: #fff7ed;
}

.keyboard-actions {
    flex-shrink: 0;
    display: grid;
    grid-template-columns: 0.7fr 0.7fr minmax(88px, 1.25fr) 1fr 1.1fr;
    gap: 5px;
    padding: 5px;
    border-top: 1px solid var(--line);
}

.keyboard-action {
    min-height: 36px;
    border-radius: 7px;
    color: var(--gray-700);
    background: white;
    font-size: 14px;
    font-weight: 850;
}

.keyboard-action.action-delete {
    color: var(--red);
    background: #fef2f2;
}

.keyboard-action.action-clear {
    color: #9a3412;
    background: #fff7ed;
}

.keyboard-action.action-submit {
    color: white;
    background: var(--green);
}

.play-panel {
    position: relative;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    overflow: hidden;
    background: #fbfdff;
}

.graph-toolbar {
    min-width: 0;
    display: grid;
    grid-template-columns: minmax(220px, 1fr) auto;
    align-items: center;
    gap: 12px;
    min-height: 42px;
    padding: 5px 8px;
    border-bottom: 1px solid var(--line);
    background: white;
}

.mission-summary {
    min-width: 0;
    display: grid;
    gap: 2px;
}

.mission-summary span {
    color: var(--primary);
    font-size: 12px;
    font-weight: 850;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.mission-summary strong {
    min-width: 0;
    overflow: hidden;
    color: var(--ink);
    font-size: 16px;
    line-height: 1.2;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.hud-stats {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
}

.score-chip,
.hud-chip {
    min-height: 34px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 0 10px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 850;
    white-space: nowrap;
}

.score-chip {
    border: 1px solid #f5d48a;
    color: #7c4a03;
    background: var(--orange-soft);
}

.score-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: #f59e0b;
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.18);
}

.hud-chip {
    border: 1px solid var(--line);
    color: var(--ink);
    background: var(--surface);
}

.hud-chip span {
    color: var(--muted);
    font-size: 11px;
    font-weight: 850;
    text-transform: uppercase;
}

.timer-chip strong {
    min-width: 52px;
    text-align: right;
}

.timer-chip.timer-active {
    border-color: var(--primary);
    color: var(--primary-dark);
    background: var(--primary-soft);
}

.timer-chip.timer-active span {
    color: var(--primary);
}

.timer-chip.timer-urgent {
    border-color: #fca5a5;
    color: #991b1b;
    background: #fef2f2;
    animation: timer-pulse 0.8s ease-in-out infinite;
}

.timer-chip.timer-urgent span {
    color: var(--red);
}

@keyframes timer-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.graph-stage {
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3px;
}

#gameCanvas {
    width: min(100%, 1040px);
    height: min(100%, 1040px);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fafaff;
    overflow: hidden;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.8);
}

#gameCanvas canvas {
    display: block;
}

.play-actions {
    position: absolute;
    right: 12px;
    bottom: 12px;
    left: 12px;
    z-index: 3;
    display: grid;
    grid-template-columns: minmax(180px, 1fr) 120px 130px auto;
    align-items: center;
    gap: 8px;
    min-height: 48px;
    padding: 6px;
    border: 1px solid rgba(217, 225, 236, 0.9);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
}

.btn-launch {
    min-height: 40px;
    border-radius: 8px;
    color: white;
    background: var(--primary);
    font-size: 16px;
    font-weight: 850;
}

.btn-small {
    min-height: 40px;
    border-radius: 8px;
    color: white;
    font-size: 14px;
    font-weight: 850;
}

.btn-small.orange {
    background: var(--orange);
}

.btn-small.orange:hover {
    background: #b45309;
}

.btn-small.green {
    background: var(--green);
}

.btn-small.green:hover {
    background: #047857;
}

.side-score {
    justify-self: end;
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
    white-space: nowrap;
}

.toast {
    position: absolute;
    left: 50%;
    bottom: 74px;
    max-width: min(520px, calc(100% - 32px));
    padding: 10px 16px;
    border-radius: 8px;
    color: white;
    background: var(--primary);
    box-shadow: var(--shadow-md);
    font-size: 14px;
    font-weight: 850;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.success,
.toast.error,
.toast.info {
    opacity: 1;
    transform: translate(-50%, 0);
}

.toast.success {
    background: var(--green);
}

.toast.error {
    background: var(--red);
}

.toast.info {
    background: var(--primary);
}

.seo-footer {
    padding: 40px 24px;
    background: var(--surface);
    border-top: 1px solid var(--line);
    color: var(--gray-700);
    font-size: 14px;
    line-height: 1.7;
}

.seo-footer-inner {
    max-width: 800px;
    margin: 0 auto;
}

.seo-footer h2 {
    margin-bottom: 12px;
    color: var(--ink);
    font-size: 20px;
    font-weight: 800;
}

.seo-footer h3 {
    margin: 20px 0 8px;
    color: var(--ink);
    font-size: 16px;
    font-weight: 700;
}

.seo-footer ul,
.seo-footer ol {
    margin: 8px 0;
    padding-left: 24px;
}

.seo-footer li {
    margin-bottom: 4px;
}

.seo-footer code {
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--surface-strong);
    font-family: var(--mono);
    font-size: 13px;
}

.seo-footer a {
    color: var(--primary);
    font-weight: 600;
}

.seo-footer a:hover {
    text-decoration: underline;
}

.seo-footer-copy {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 12px;
}

.mission-card,
.stats-row,
.action-buttons,
.btn-pair,
.graph-hint {
    display: none;
}

@media (max-width: 1180px) {
    .game-layout {
        grid-template-columns: 260px minmax(500px, 1fr) 142px;
    }

    .hud-chip span {
        display: none;
    }

    .play-actions {
        grid-template-columns: minmax(160px, 1fr) 100px 120px;
    }

    .side-score {
        display: none;
    }
}

@media (max-width: 900px) {
    body.game-page {
        height: auto;
        overflow: auto;
    }

    .game-page .app-shell {
        height: auto;
        min-height: 100vh;
        overflow: visible;
    }

    .game-layout {
        grid-template-columns: 1fr;
    }

    .play-panel {
        min-height: min(100vw, 720px);
        order: 1;
    }

    .control-rail {
        display: flex;
        flex-direction: column;
        height: auto;
        order: 2;
        overflow: visible;
    }

    .mode-rail {
        order: 3;
        overflow: visible;
    }

    .mode-grid {
        grid-template-columns: repeat(5, minmax(0, 1fr));
    }

    .mode-card,
    .mode-card.daily {
        min-height: 54px;
    }

    .eq-list,
    .keyboard-panel {
        max-height: none;
    }
}

@media (max-width: 640px) {
    .app-shell {
        grid-template-rows: auto auto;
        padding: 6px;
    }

    .top-bar {
        min-height: 44px;
    }

    .brand-copy span,
    .hud-chip,
    .mission-summary strong {
        display: none;
    }

    .graph-toolbar {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .hud-stats {
        justify-content: stretch;
    }

    .score-chip,
    .timer-chip {
        flex: 1;
        justify-content: center;
    }

    .graph-stage {
        padding: 6px;
    }

    .play-panel {
        min-height: calc(100vw + 112px);
    }

    .play-actions {
        grid-template-columns: 1fr;
    }

    .btn-launch,
    .btn-small {
        width: 100%;
    }

    .mode-grid,
    .coord-row,
    .equation-input-wrap {
        grid-template-columns: 1fr;
    }

    .mode-card.daily {
        grid-column: auto;
    }

    .rail-header {
        align-items: stretch;
        flex-direction: column;
    }

    .rail-header h1 {
        max-width: none;
    }

    .streak-pill {
        width: 100%;
    }

    .keyboard-actions {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .keyboard-action.action-submit {
        grid-column: span 2;
    }

    .keys-container.grid-5 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .toast {
        bottom: 168px;
    }
}