.hidden {
    display: none !important;
}

#controls-wrapper {
    position: relative;
}

.control-button {
    min-height: 44px;
    border: 2px solid var(--button-bg);
    border-radius: 0;
    padding: 9px 16px;
    background: var(--button-bg);
    color: var(--button-text);
    box-shadow: none;
    font: inherit;
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.25;
    cursor: pointer;
    transition: background-color 140ms ease, color 140ms ease,
                border-color 140ms ease;
}

.control-button:hover {
    border-color: var(--button-bg);
    background: var(--button-hover-bg);
    color: var(--button-hover-text);
}

.control-button:active {
    background: var(--button-active-bg);
    color: var(--button-text);
}

.control-button:focus-visible,
#grid-size-select:focus-visible,
#seed-input:focus-visible,
#difficulty-slider:focus-visible,
#settings-menu input:focus-visible,
#settings-menu select:focus-visible,
#color-panel button:focus-visible,
#color-panel input:focus-visible {
    outline: 3px solid var(--button-focus-ring);
    outline-offset: 3px;
}

.control-button:disabled {
    border-color: var(--button-disabled-bg);
    background: var(--button-disabled-bg);
    color: var(--button-text);
    cursor: not-allowed;
    opacity: 0.7;
}

/* The current header owns placement. These rules preserve the original controls
   when the compact layout is used without turning them into floating bubbles. */
#menu-toggle,
#history-toggle {
    z-index: 1000;
    border-radius: 0;
    box-shadow: none;
}

#status-info {
    display: flex;
    width: 100%;
    max-width: 800px;
    align-items: stretch;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px auto 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

#timer-display,
#mistake-display,
#puzzle-name-display,
#grid-size-display,
#navigator-header-label {
    min-width: 0;
    min-height: 44px;
    border: 2px solid var(--hud-text);
    border-radius: 0;
    padding: 9px 14px;
    background: var(--hud-bg);
    color: var(--hud-text);
    box-shadow: none;
    font-size: 0.85rem;
    line-height: 1.25;
    text-align: center;
}

#timer-display {
    display: flex;
    flex: 1 1 230px;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-variant-numeric: tabular-nums;
}

#timer-display > * {
    white-space: nowrap;
}

#mistake-display,
#grid-size-display {
    white-space: nowrap;
}

#puzzle-name-display {
    flex: 1 1 140px;
}

#navigator-header-label {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

#navigator-header-label:hover {
    background: var(--hud-text);
    color: var(--hud-bg);
}

#random-seed-button {
    min-width: 150px;
    border-color: var(--hud-button-bg);
    background: var(--hud-button-bg);
    color: var(--hud-button-text);
    box-shadow: none;
}

#random-seed-button:hover {
    border-color: var(--hud-button-bg);
    background: var(--hud-bg);
    color: var(--hud-text);
}

/* Settings */
#menu-overlay {
    position: fixed;
    inset: 0;
    z-index: 1100;
    background: var(--menu-overlay);
    opacity: 0;
    transition: opacity 180ms ease;
    pointer-events: none;
}

#menu-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

#settings-menu {
    position: fixed;
    top: 50%;
    left: 50%;
    z-index: 1200;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    width: min(680px, calc(100vw - 32px));
    max-height: calc(100dvh - 32px);
    padding: 18px;
    overflow-y: auto;
    border: 2px solid var(--divider-color);
    border-radius: 0;
    background: var(--menu-bg);
    color: var(--menu-text);
    box-shadow: 10px 10px 0 rgb(44 62 80 / 18%);
    opacity: 0;
    transform: translate(-50%, calc(-50% - 10px));
    transition: opacity 180ms ease, transform 180ms ease;
    pointer-events: none;
}

#settings-menu.open {
    opacity: 1;
    transform: translate(-50%, -50%);
    pointer-events: auto;
}

#settings-menu .menu-section {
    display: flex;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 9px;
    margin: 0;
    padding: 14px;
    border: 1px solid var(--divider-color);
    border-radius: 0;
    background: var(--menu-bg);
}

#settings-menu .options-section {
    grid-row: span 2;
}

#settings-menu .menu-section h3 {
    margin: 0 0 4px;
    color: var(--menu-text);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-align: left;
    text-transform: uppercase;
}

#settings-menu #solver-time-display,
#settings-menu #solver-status-display,
#settings-menu #solver-steps-display,
#settings-menu #generation-status {
    width: 100%;
    min-height: 38px;
    box-sizing: border-box;
    padding: 9px 10px;
    border-left: 3px solid var(--divider-color);
    border-radius: 0;
    background: var(--hud-bg);
    color: var(--hud-text);
    font-size: 0.8rem;
    line-height: 1.4;
    text-align: left;
}

#settings-menu #solver-status-display:empty,
#settings-menu #solver-steps-display:empty,
#settings-menu #generation-status:empty {
    display: none;
}

#settings-menu .control-button,
#toggle-solution,
#grid-size-select {
    width: 100%;
    min-width: 0;
}

#grid-size-select,
#seed-input {
    min-height: 44px;
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
    border: 2px solid var(--menu-text);
    border-radius: 0;
    outline: 0;
    padding: 9px 12px;
    background: var(--hud-bg);
    color: var(--hud-text);
    font: inherit;
    font-size: 0.9rem;
}

#grid-size-select {
    min-height: 48px;
    border-color: var(--menu-text);
    background-color: var(--menu-bg);
    color: var(--menu-text);
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
}

#grid-size-select:hover {
    border-color: var(--navigator-focus);
    background-color: var(--hud-bg);
}

#grid-size-select:focus {
    border-color: var(--navigator-focus);
    background-color: var(--menu-bg);
}

#grid-size-select option {
    background: var(--menu-bg);
    color: var(--menu-text);
    font: inherit;
}

.grid-size-presets { display: flex; flex-wrap: wrap; gap: 6px; width: 100%; }
[data-grid-size] { flex: 1 1 56px; min-width: 52px; min-height: 44px; padding: 8px; border: 2px solid var(--menu-text); border-radius: 0; background: var(--menu-bg); color: var(--menu-text); box-shadow: none; }
[data-grid-size]:hover { background: var(--button-hover-bg); color: var(--button-hover-text); }
[data-grid-size].active,
[data-grid-size][aria-pressed="true"] { background: var(--menu-text); color: var(--menu-bg); outline: 2px solid var(--menu-text); outline-offset: 2px; }
.options-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; width: 100%; }
.options-actions #create-puzzle-btn { background: var(--hud-button-bg); color: var(--hud-button-text); }
.options-actions #save-puzzle-btn { background: var(--menu-bg); color: var(--menu-text); }
.options-actions #create-puzzle-btn:hover, .options-actions #save-puzzle-btn:hover { background: var(--button-hover-bg); color: var(--button-hover-text); }
.options-actions #change-color-btn { grid-column: 1 / -1; }

#seed-input:focus {
    border-color: var(--navigator-focus);
    background: var(--menu-bg);
}

#seed-input::placeholder {
    color: var(--hud-text);
    opacity: 0.65;
}

label[for="grid-size-select"],
.seed-container label,
.difficulty-container label,
.field-label {
    color: var(--menu-text);
    font-size: 0.8rem;
    font-weight: 700;
    text-align: left;
}

label[for="grid-size-select"] {
    display: grid;
    width: 100%;
    gap: 7px;
}

.seed-container,
.difficulty-container {
    display: flex;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 7px;
}

.difficulty-container {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
}

.difficulty-container label {
    grid-column: 1 / -1;
}

#difficulty-slider {
    width: 100%;
    min-height: 44px;
    margin: 0;
    accent-color: var(--button-bg);
    cursor: pointer;
}

#difficulty-label {
    min-width: 64px;
    border: 1px solid var(--divider-color);
    border-radius: 0;
    padding: 5px 8px;
    background: var(--hud-bg);
    color: var(--hud-text);
    font-size: 0.75rem;
    font-weight: 800;
    text-align: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-label input {
    width: 18px;
    height: 18px;
    margin: 0;
    accent-color: var(--button-bg);
    cursor: pointer;
}

#controls-container {
    display: flex;
    width: 100%;
    max-width: 600px;
    flex-direction: column;
    align-items: center;
}

/* Theme studio. This intentionally outranks the base theme sheet. */
body #color-panel {
    width: min(420px, 100vw);
    max-width: 420px;
    padding: 16px;
    border: 0;
    border-right: 2px solid var(--divider-color);
    border-radius: 0;
    background: var(--menu-bg);
    box-shadow: 8px 0 0 rgb(44 62 80 / 16%);
}

body #color-panel .theme-studio-header {
    flex: 0 0 auto;
    margin: 0 0 16px;
    padding: 0 0 14px;
    border-bottom: 2px solid var(--menu-text);
}

body #color-panel .theme-studio-header h2 {
    margin: 0;
    color: var(--menu-text);
    font-size: 1.25rem;
    line-height: 1.2;
}

body #color-panel .theme-studio-header p {
    margin: 6px 0 0;
    color: var(--secondary-text);
    font-size: 0.82rem;
    line-height: 1.45;
}

body #color-panel .color-category {
    grid-template-columns: minmax(112px, 0.8fr) minmax(0, 1.2fr);
    gap: 9px;
    margin-bottom: 18px;
    padding: 12px;
    border: 1px solid var(--divider-color);
    border-radius: 0;
    background: var(--menu-bg);
}

body #color-panel .color-category h3,
body #color-panel #color-presets h3 {
    color: var(--menu-text);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-align: left;
    text-transform: uppercase;
}

body #color-panel .color-label {
    color: var(--menu-text);
    font-size: 0.78rem;
    text-align: left;
}

body #color-panel .color-controls input[type="text"],
body #color-panel .color-controls input[type="number"] {
    min-height: 38px;
    border: 1px solid var(--divider-color);
    border-radius: 0;
    background: var(--hud-bg);
    color: var(--hud-text);
}

body #color-panel .color-swatch,
body #color-panel .color-swatch-color {
    border-radius: 0;
}

body #color-panel .color-swatch {
    width: 38px;
    height: 38px;
    box-shadow: none;
}

body #color-panel #color-presets {
    gap: 8px;
    margin-bottom: 16px;
    padding: 12px;
    border: 1px solid var(--divider-color);
    border-radius: 0;
    background: var(--menu-bg);
}

body #color-panel #color-presets button {
    min-height: 40px;
    height: auto;
    border-radius: 0;
}

body #color-panel .preset-preview {
    border-radius: 0;
}

body #color-panel #color-panel-buttons {
    padding-top: 14px;
    border-top: 2px solid var(--divider-color);
}

.hit-count-rows,
.hit-count-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hit-count-rows > div,
.hit-count-column > div {
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
}

.navigator-hint {
    color: var(--navigator-focus) !important;
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

.cell.solution {
    color: var(--primary-text);
}

.coord-x,
.coord-y {
    position: absolute;
    color: var(--navigator-focus);
    font-size: 10px;
    font-weight: 800;
    pointer-events: none;
}

.coord-x {
    top: 0;
    left: 18px;
}

.coord-y {
    top: 19.5px;
    left: 0;
}

.coord {
    pointer-events: none;
}

.solved {
    background: var(--state-success) !important;
}

.solved-hint {
    color: rgb(0 0 0 / 17%) !important;
    text-decoration: line-through;
}

@media (max-width: 760px) {
    #settings-menu {
        grid-template-columns: 1fr;
        width: min(440px, calc(100vw - 24px));
        max-height: calc(100dvh - 24px);
        padding: 12px;
        box-shadow: 6px 6px 0 rgb(44 62 80 / 18%);
    }

    #settings-menu .options-section {
        grid-row: auto;
    }

    #status-info {
        gap: 8px;
    }

    #random-seed-button,
    #timer-display {
        flex: 1 1 100%;
    }
}

@media (max-width: 540px) {
    #timer-display {
        justify-content: space-between;
        gap: 6px;
        padding-inline: 8px;
        font-size: clamp(0.65rem, 2.8vw, 0.76rem);
    }

    #mistake-display,
    #puzzle-name-display,
    #grid-size-display,
    #navigator-header-label {
        padding-inline: 9px;
        font-size: 0.72rem;
    }

    #mistake-display,
    #grid-size-display,
    #navigator-header-label {
        flex: 1 1 auto;
    }

    #puzzle-name-display {
        flex: 1 1 60%;
    }

    body #color-panel {
        inset: 0;
        width: 100%;
        max-width: none;
        padding: 12px;
        border: 0;
        box-shadow: none;
    }

    body #color-panel .color-category {
        grid-template-columns: minmax(100px, 0.75fr) minmax(0, 1.25fr);
        padding: 10px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .control-button,
    #menu-overlay,
    #settings-menu {
        transition-duration: 0.01ms !important;
    }
}