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

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: #f5f5f5;
    color: #333;
}

h1:focus {
    outline: none;
}

a, .btn-link {
    color: #0071c1;
}

.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.content {
    padding-top: 1.1rem;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid red;
}

.validation-message {
    color: red;
}

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

    #blazor-error-ui .dismiss {
        cursor: pointer;
        position: absolute;
        right: 0.75rem;
        top: 0.5rem;
    }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 20vh 0 auto 0;
    margin: 0 auto 0 auto;
}

    .loading-progress circle {
        fill: none;
        stroke: #e0e0e0;
        stroke-width: 0.6rem;
        transform-origin: 50% 50%;
        transform: rotate(-90deg);
    }

        .loading-progress circle:last-child {
            stroke: #1b6ec2;
            stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
            transition: stroke-dasharray 0.05s ease-in-out;
        }

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

    .loading-progress-text:after {
        content: var(--blazor-load-percentage-text, "Loading");
    }

code {
    color: #c02d76;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-content h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 2rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.author-info, .version-info {
    margin-top: 1.5rem;
    line-height: 1.8;
}

.author-info a {
    color: #ffd700;
    text-decoration: none;
}

.author-info a:hover {
    text-decoration: underline;
}

/* Top Navigation */
.top-nav {
    background: white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-nav .brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
}

.top-nav .nav-links {
    display: flex;
    gap: 1.5rem;
}

.top-nav a {
    color: #333;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background 0.2s;
}

.top-nav a:hover {
    background: #f0f0f0;
}

/* Page Container */
.page-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-secondary {
    background: #e0e0e0;
    color: #333;
}

.btn-secondary:hover {
    background: #d0d0d0;
}

.maze-dimension-form {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.maze-dimension-form h2 {
    font-size: 1.25rem;
}

.dimension-input-group {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.dimension-input {
    flex: 0 0 160px;
    padding: 0.6rem 0.75rem;
    border: 1px solid #cbd2dc;
    border-radius: 6px;
    font-size: 1.05rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.dimension-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.dimension-help-text {
    color: #6c757d;
    font-size: 0.9rem;
}

.maze-selector-container {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.maze-selection-summary {
    background: #f6f9ff;
    border: 1px solid #d9e1ff;
    border-radius: 6px;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    line-height: 1.6;
}

.maze-selector-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 0.75rem;
}

/* Export dialog */
.export-dialog-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(9, 14, 32, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 1.5rem;
}

.export-dialog {
    width: min(640px, 100%);
    max-height: 90vh;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.25);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.export-dialog__header,
.export-dialog__footer {
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #e4e7ef;
}

.export-dialog__footer {
    border-top: 1px solid #e4e7ef;
    border-bottom: none;
    justify-content: flex-end;
    gap: 0.75rem;
}

.export-dialog__body {
    padding: 1.25rem 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.export-section h4 {
    margin-bottom: 0.4rem;
    font-size: 1.05rem;
}

.export-section__hint {
    font-size: 0.9rem;
    color: #5f647b;
    margin-bottom: 0.65rem;
}

.export-checkbox-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-weight: 500;
}

.export-checkbox-single {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.export-slider {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.export-preview {
    background: #f7f8ff;
    border: 1px solid #dfe4f3;
    border-radius: 10px;
    padding: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.export-preview svg {
    max-width: 100%;
    height: auto;
}

.preview-wall {
    fill: #1f2435;
}

.preview-cell {
    fill: #e4e8ff;
    stroke: #c8cdea;
    stroke-width: 1;
}

.preview-cell--start {
    fill: #90EE90;
}

.preview-cell--end {
    fill: #FFB6C1;
}

.icon-button {
    border: none;
    background: transparent;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    color: #6b7280;
}

.icon-button:hover {
    color: #111827;
}

.icon-button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.selection-stage {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0;
    min-height: 0;
    transition: min-height 0.35s ease;
}

.fade-slide-in {
    opacity: 0;
    animation: fadeSlideIn 0.45s ease-out forwards;
}

@keyframes fadeSlideIn {
    0% {
        opacity: 0;
        transform: translateY(12px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.maze-grid-card {
    border: 1px solid #e4e7ef;
    border-radius: 10px;
    padding: 1.5rem;
    background: linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.08);
}

.maze-grid-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.mode-toggle {
    display: inline-flex;
    gap: 0.25rem;
    padding: 4px;
    border-radius: 999px;
    background: #eef1fb;
}

.mode-toggle-button {
    border: none;
    background: transparent;
    padding: 0.5rem 1.1rem;
    border-radius: 999px;
    font-weight: 600;
    color: #4a4d66;
    cursor: pointer;
    transition: all 0.2s ease;
}

.mode-toggle-button:hover {
    background: rgba(102, 110, 234, 0.12);
}

.mode-toggle-button.is-active {
    background: #667eea;
    color: white;
    box-shadow: 0 6px 12px rgba(102, 110, 234, 0.25);
}

.maze-grid-legend {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.4rem 0.6rem;
    align-items: center;
    font-size: 0.85rem;
    color: #565a6f;
}

.legend-sample {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    display: inline-block;
    border: 1px solid transparent;
}

.legend-sample.start {
    background: #ffe6c5;
    border-color: #f5b469;
}

.legend-sample.end {
    background: #dff5ff;
    border-color: #70c2f8;
}

.maze-grid-hint {
    margin-top: 1rem;
    margin-bottom: 0.75rem;
    color: #5f647b;
    font-size: 0.95rem;
}

.maze-grid {
    display: grid;
    gap: 6px;
    padding: 12px;
    background: #ffffff;
    border: 1px solid #e1e5f2;
    border-radius: 12px;
    max-height: 55vh;
    overflow: auto;
}

.maze-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1 / 1;
    border: 1px solid #d6dcea;
    border-radius: 6px;
    background: #f7f8fc;
    font-size: 0.75rem;
    font-weight: 600;
    color: #63688f;
    transition: background 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
    cursor: pointer;
}

.maze-cell[data-tooltip] {
    position: relative;
    z-index: 1;
}

.maze-cell[data-tooltip]::after,
.maze-cell[data-tooltip]::before {
    position: absolute;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.12s ease, transform 0.12s ease;
}

.maze-cell[data-tooltip]::after {
    content: attr(data-tooltip);
    background: rgba(28, 32, 54, 0.92);
    color: #ffffff;
    padding: 0.35rem 0.55rem;
    border-radius: 6px;
    font-size: 0.7rem;
    white-space: nowrap;
    box-shadow: 0 6px 18px rgba(24, 32, 62, 0.22);
    z-index: 20;
}

.maze-cell[data-tooltip]::before {
    content: "";
    width: 8px;
    height: 8px;
    background: rgba(28, 32, 54, 0.92);
    z-index: 19;
}

.maze-cell[data-tooltip]:hover::after,
.maze-cell[data-tooltip]:hover::before {
    opacity: 1;
    visibility: visible;
}

.maze-cell[data-tooltip]:hover {
    z-index: 100;
}

.maze-cell[data-tooltip].tooltip-top::after {
    left: 50%;
    bottom: calc(100% + 8px);
    transform: translate(-50%, 4px);
}

.maze-cell[data-tooltip].tooltip-top::before {
    left: 50%;
    bottom: calc(100% - 2px);
    transform: translate(-50%, 6px) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-top:hover::after {
    transform: translate(-50%, 0);
}

.maze-cell[data-tooltip].tooltip-top:hover::before {
    transform: translate(-50%, 0) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-bottom::after {
    left: 50%;
    top: calc(100% + 8px);
    transform: translate(-50%, -4px);
}

.maze-cell[data-tooltip].tooltip-bottom::before {
    left: 50%;
    top: calc(100% - 2px);
    transform: translate(-50%, -6px) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-bottom:hover::after {
    transform: translate(-50%, 0);
}

.maze-cell[data-tooltip].tooltip-bottom:hover::before {
    transform: translate(-50%, 0) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-left::after {
    right: calc(100% + 8px);
    top: 50%;
    transform: translate(4px, -50%);
}

.maze-cell[data-tooltip].tooltip-left::before {
    left: -4px;
    top: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-left:hover::after {
    transform: translate(0, -50%);
}

.maze-cell[data-tooltip].tooltip-left:hover::before {
    transform: translate(-50%, -50%) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-right::after {
    left: calc(100% + 8px);
    top: 50%;
    transform: translate(-4px, -50%);
}

.maze-cell[data-tooltip].tooltip-right::before {
    right: -4px;
    top: 50%;
    transform: translate(50%, -50%) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-right:hover::after {
    transform: translate(0, -50%);
}

.maze-cell[data-tooltip].tooltip-right:hover::before {
    transform: translate(50%, -50%) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-bottom-left::after {
    right: 0;
    top: calc(100% + 8px);
    transform: translate(0, -4px);
}

.maze-cell[data-tooltip].tooltip-bottom-left::before {
    left: 50%;
    top: calc(100% - 2px);
    transform: translate(-50%, -6px) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-bottom-left:hover::after {
    transform: translate(0, 0);
}

.maze-cell[data-tooltip].tooltip-bottom-left:hover::before {
    transform: translate(-50%, 0) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-bottom-right::after {
    left: 0;
    top: calc(100% + 8px);
    transform: translate(0, -4px);
}

.maze-cell[data-tooltip].tooltip-bottom-right::before {
    left: 50%;
    top: calc(100% - 2px);
    transform: translate(-50%, -6px) rotate(45deg);
}

.maze-cell[data-tooltip].tooltip-bottom-right:hover::after {
    transform: translate(0, 0);
}

.maze-cell[data-tooltip].tooltip-bottom-right:hover::before {
    transform: translate(-50%, 0) rotate(45deg);
}

.maze-cell.mode-start:not(.is-start):hover,
.maze-cell.mode-end:not(.is-end):hover {
    transform: translateY(-1px);
    background: #edf1ff;
}

.maze-cell.is-start {
    background: #ffe6c5;
    border-color: #f5b469;
    color: #7b4b11;
}

.maze-cell.is-end {
    background: #dff5ff;
    border-color: #70c2f8;
    color: #0f3e67;
}

.maze-cell.mode-start {
    box-shadow: inset 0 0 0 1px rgba(255, 150, 66, 0.25);
}

.maze-cell.mode-end {
    box-shadow: inset 0 0 0 1px rgba(102, 184, 241, 0.25);
}

.maze-grid-message {
    margin-top: 0.75rem;
    color: #c6513a;
    font-weight: 600;
}

.wall-config-container {
    margin-top: 2rem;
}

.wall-config-card {
    border: 1px solid #e4e7ef;
    border-radius: 10px;
    padding: 1.5rem;
    background: linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
    box-shadow: 0 6px 20px rgba(22, 40, 120, 0.08);
}

.algorithm-config-container {
    margin-top: 1.25rem;
    border: 1px solid #e4e7ef;
    border-radius: 10px;
    padding: 1.5rem;
    background: linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
    box-shadow: 0 6px 20px rgba(22, 40, 120, 0.08);
}

.algorithm-config-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.algorithm-config-card h3 {
    margin: 0;
    font-size: 1.25rem;
}

.algorithm-config-card p {
    margin: 0;
    color: #5f647b;
    font-size: 0.95rem;
}

.algorithm-config-form {
    display: grid;
    gap: 0.85rem;
}

.algorithm-config-form label {
    font-weight: 600;
    color: #434869;
}

.algorithm-select,
.algorithm-seed-input {
    padding: 0.6rem 0.75rem;
    border: 1px solid #cbd2dc;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.algorithm-select:focus,
.algorithm-seed-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.algorithm-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 0.5rem;
}

.wall-config-alert {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid #f0b27a;
    background: #fff4d6;
    color: #6a3c00;
    font-size: 0.9rem;
}

.wall-config-header h3 {
    font-size: 1.25rem;
    margin-bottom: 0.35rem;
}

.wall-config-header p {
    color: #5f647b;
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
}

.wall-config-columns {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 900px) {
    .wall-config-columns {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.wall-config-column-inner {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    border: 1px solid #e1e5f2;
    border-radius: 12px;
    padding: 1.25rem;
    background: #ffffff;
    box-shadow: inset 0 0 0 1px rgba(102, 126, 234, 0.04);
}

.wall-config-column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.wall-config-column-header h4 {
    margin: 0;
    font-size: 1.1rem;
}

.wall-config-selected-count {
    font-size: 0.85rem;
    font-weight: 600;
    color: #63688f;
    background: #eef1fb;
    border-radius: 999px;
    padding: 0.25rem 0.75rem;
}

.wall-mini-grid-wrapper {
    max-width: 100%;
    overflow: auto;
}

.wall-mini-grid-wrapper.is-scrollable {
    max-height: 18rem;
    padding-right: 0.25rem;
}

.wall-mini-grid {
    display: grid;
    gap: 0.5rem;
    padding: 0.75rem;
    background: #f6f8ff;
    border-radius: 10px;
    border: 1px solid #e2e6f5;
    width: max-content;
    min-width: 100%;
}

.wall-mini-grid-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    aspect-ratio: 1 / 1;
    min-height: 0;
    padding: 0;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #4e5270;
    background: #ffffff;
    border: 1px solid #d8def2;
}

.wall-mini-grid-cell.is-start {
    background: #ffe6c5;
    border-color: #f5b469;
    color: #7b4b11;
}

.wall-mini-grid-cell.is-end {
    background: #dff5ff;
    border-color: #70c2f8;
    color: #0f3e67;
}

.wall-mini-grid-cell.is-adjacent {
    background: #edf1ff;
    border-color: #c9d3ff;
}

.wall-mini-grid-label {
    text-align: center;
}

.wall-mini-grid-empty {
    font-size: 0.9rem;
    color: #6b6f88;
}

.wall-mini-grid-cell.is-interactive {
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.wall-mini-grid-cell.is-interactive:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 110, 234, 0.12);
}

.wall-mini-grid-cell.is-interactive:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.wall-mini-grid-cell.is-open {
    background: #e6f8ed;
    border-color: #6fd899;
    color: #145231;
    box-shadow: inset 0 0 0 1px rgba(20, 82, 49, 0.16);
}

.wall-mini-grid-cell.is-wall {
    background: #ffe4e4;
    border-color: #f08c8c;
    color: #6b1e1e;
    box-shadow: inset 0 0 0 1px rgba(107, 30, 30, 0.16);
}


.wall-mini-grid-cell.has-mixed {
    box-shadow: inset 0 0 0 2px rgba(255, 209, 92, 0.4);
}

.wall-mini-grid-cell.is-disabled {
    background: #f1f3ff;
    color: #9aa1c2;
}

.wall-mini-grid-cell.is-empty {
    background: transparent;
    border: none;
    box-shadow: none;
}

.feature-list ul {
    margin: 0;
    padding-left: 1.2rem;
    line-height: 2;
}

/* Spinner styles */
.spinner-border {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    vertical-align: text-bottom;
    border: 0.15em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-border 0.75s linear infinite;
}

.spinner-border-sm {
    width: 0.875rem;
    height: 0.875rem;
    border-width: 0.125em;
}

@keyframes spinner-border {
    to {
        transform: rotate(360deg);
    }
}

/* Maze result display */
.maze-result-container {
    margin-top: 2rem;
    padding: 1.5rem;
    border: 1px solid #e4e7ef;
    border-radius: 10px;
    background: #ffffff;
    box-shadow: 0 4px 16px rgba(22, 40, 120, 0.06);
}

.maze-result-container h4 {
    margin: 0 0 1rem 0;
    font-size: 1.15rem;
    color: #2c3e50;
}

.maze-download-actions {
    margin-top: 1rem;
    display: flex;
    justify-content: flex-end;
}

.maze-image-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid #e9ecef;
}

.maze-image {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.maze-result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-secondary {
    color: #fff;
    background-color: #6c757d;
    border: 1px solid #6c757d;
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-secondary:hover:not(:disabled) {
    background-color: #5a6268;
    border-color: #545b62;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(108, 117, 125, 0.3);
}

.btn-secondary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.maze-gallery-status {
    margin: 1.5rem 0;
    color: #666;
    text-align: center;
}

.maze-gallery-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    margin-top: 1.5rem;
}

.maze-gallery-card {
    display: flex;
    flex-direction: column;
    border: 1px solid #e1e1e1;
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.maze-gallery-card:focus,
.maze-gallery-card:hover {
    border-color: #3b82f6;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

.maze-gallery-image-wrapper {
    background: #f7f7f7;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.maze-gallery-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.maze-gallery-card__body {
    padding: 0.75rem 1rem 1rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.maze-gallery-card__title {
    font-weight: 600;
    font-size: 0.95rem;
}

.maze-gallery-badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: #1f2937;
    background: #fde68a;
    border-radius: 999px;
    padding: 0.1rem 0.6rem;
}

.maze-search {
    margin: 1.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.maze-search__label {
    font-weight: 600;
    font-size: 0.9rem;
    color: #374151;
}

.maze-search__controls {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.maze-search__input {
    flex: 1 1 220px;
    padding: 0.65rem 0.9rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
}

.maze-search__input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.maze-search__clear {
    flex: 0 0 auto;
    align-self: center;
}

.maze-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.maze-pagination span {
    font-weight: 600;
    color: #374151;
}

.maze-detail-layout {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.maze-detail-primary {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}

.maze-detail-preview {
    flex: 1 1 300px;
    min-width: 280px;
    background: #f7f7f7;
    border: 1px solid #ececec;
    border-radius: 16px;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.maze-detail-preview img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.maze-detail-summary {
    flex: 1 1 320px;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.maze-detail-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.maze-detail-stats dt {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: #6b6b6b;
    margin-bottom: 0.25rem;
}

.maze-detail-stats dd {
    margin: 0;
    font-weight: 600;
    font-size: 1rem;
}

.maze-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.maze-detail-placeholder {
    font-size: 0.85rem;
    color: #888;
    font-style: italic;
}

.maze-detail-links ul {
    list-style: disc;
    padding-left: 1.5rem;
    margin: 0.5rem 0 0;
}

.maze-detail-links li + li {
    margin-top: 0.25rem;
}
/* Error message styling */
.error-message {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: 6px;
    color: #856404;
}

/* Fade in animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* Disabled state for inputs */
.algorithm-select:disabled,
.algorithm-seed-input:disabled {
    background-color: #f5f5f5;
    cursor: not-allowed;
    opacity: 0.7;
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}