@layer config {
    :root {
        --color-primary: oklch(0% 0 0);
        --color-primary-hover: oklch(15% 0 0);
        --color-primary-disabled: oklch(60% 0 0);
        --color-text: oklch(0% 0 0);
        --color-text-secondary: oklch(30% 0 0);
        --color-text-tertiary: oklch(50% 0 0);
        --color-background: oklch(100% 0 0);
        --color-background-alt: oklch(5% 0 0);
        --color-border: oklch(20% 0 0);
        --color-error-bg: oklch(95% 0 0);
        --color-error-text: oklch(0% 0 0);
        --color-error-border: oklch(0% 0 0);
        
        --spacing-xs: 0.5rem;
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
        --spacing-3xl: 3rem;
        
        --radius-sm: 0;
        --radius-md: 0;
        --radius-lg: 0;
        
        --font-size-sm: 0.9rem;
        --font-size-base: 1rem;
        --font-size-lg: 1.1rem;
        --font-size-xl: 1.3rem;
        --font-size-2xl: 1.5rem;
        --font-size-3xl: 2rem;
        --font-size-4xl: 2.5rem;
        
        --line-height-base: 1.6;
        --line-height-tight: 1.5;
        --line-height-loose: 1.8;
        
        --shadow-sm: 0 0.125rem 0.25rem oklch(0% 0 0 / 0.2);
        --shadow-md: 0 0.25rem 0.5rem oklch(0% 0 0 / 0.3);
        --shadow-lg: 0 0.5rem 1rem oklch(0% 0 0 / 0.4);
        --shadow-xl: 0 0.75rem 2rem oklch(0% 0 0 / 0.5);
        
        --border-thick: 3px;
        --border-thin: 1px;
    }
}

@layer resets {
    *,
    *::before,
    *::after {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        line-height: var(--line-height-base);
        color: var(--color-text);
        background: var(--color-background);
        min-block-size: 100vh;
        padding: var(--spacing-md);
    }
}

@layer components {
    .c-container {
        max-inline-size: 50rem;
        margin-inline: auto;
        background: var(--color-background);
        border: var(--border-thick) solid var(--color-text);
        box-shadow: var(--shadow-xl);
        padding: var(--spacing-xl);
        margin-block-start: var(--spacing-xl);
        margin-block-end: var(--spacing-xl);
    }

    .c-subtitle {
        color: var(--color-text-secondary);
        font-size: var(--font-size-lg);
        font-weight: 500;
        letter-spacing: 0.05em;
    }

    header {
        text-align: center;
        margin-block-end: var(--spacing-xl);
    }

    h1 {
        font-size: var(--font-size-4xl);
        color: var(--color-text);
        margin-block-end: var(--spacing-sm);
        font-weight: 900;
        letter-spacing: -0.02em;
        text-transform: uppercase;
    }

    .c-search-section {
        margin-block-end: var(--spacing-xl);
    }

    .c-search-form {
        inline-size: 100%;
    }

    .c-input-group {
        display: flex;
        gap: var(--spacing-sm);
        flex-wrap: wrap;
    }

    .c-search-input {
        flex: 1;
        min-inline-size: 12.5rem;
        padding: var(--spacing-lg) var(--spacing-md);
        font-size: var(--font-size-base);
        border: var(--border-thick) solid var(--color-text);
        background: var(--color-background);
        color: var(--color-text);
        font-weight: 500;
    }

    .c-search-input:focus-visible {
        outline: var(--border-thick) solid var(--color-text);
        outline-offset: 2px;
        background: var(--color-background);
    }

    @media (prefers-reduced-motion: no-preference) {
        .c-search-input {
            transition: border-color 0.3s ease;
        }
    }

    .c-search-button {
        padding: var(--spacing-lg) var(--spacing-xl);
        font-size: var(--font-size-base);
        font-weight: 700;
        color: var(--color-background);
        background: var(--color-text);
        border: var(--border-thick) solid var(--color-text);
        cursor: pointer;
        min-inline-size: 7.5rem;
        position: relative;
        text-transform: uppercase;
        letter-spacing: 0.1em;
    }

    .c-search-button:hover:not(:disabled) {
        background: var(--color-background);
        color: var(--color-text);
    }

    .c-search-button:disabled {
        background: var(--color-primary-disabled);
        color: var(--color-text-tertiary);
        border-color: var(--color-primary-disabled);
        cursor: not-allowed;
    }

    .c-search-button:focus-visible {
        outline: var(--border-thick) solid var(--color-text);
        outline-offset: 2px;
    }

    @media (prefers-reduced-motion: no-preference) {
        .c-search-button {
            transition: background-color 0.3s ease;
        }
    }

    .c-spinner {
        display: none;
        inline-size: 1rem;
        block-size: 1rem;
        border: 2px solid var(--color-text);
        border-block-start-color: transparent;
        border-radius: 50%;
    }

    @media (prefers-reduced-motion: no-preference) {
        .c-spinner {
            animation: spin 0.8s linear infinite;
        }
    }

    .c-alert {
        background: var(--color-error-bg);
        color: var(--color-error-text);
        padding: var(--spacing-lg) var(--spacing-md);
        border: var(--border-thick) solid var(--color-error-border);
        margin-block-end: var(--spacing-md);
        font-weight: 600;
    }

    .c-alert[hidden] {
        display: none;
    }

    .c-results {
        margin-block-start: var(--spacing-xl);
    }

    .c-results[hidden] {
        display: none;
    }

    .c-move-name {
        font-size: var(--font-size-3xl);
        color: var(--color-text);
        margin-block-end: var(--spacing-2xl);
        padding-block-end: var(--spacing-lg);
        border-block-end: var(--border-thick) solid var(--color-text);
        font-weight: 900;
        letter-spacing: -0.02em;
    }

    .c-alternate-names-section {
        margin-block-end: var(--spacing-xl);
        padding-block-end: var(--spacing-lg);
        border-block-end: var(--border-thin) solid var(--color-text);
    }

    .c-alternate-names-title {
        font-size: var(--font-size-base);
        color: var(--color-text-secondary);
        margin-block-end: var(--spacing-sm);
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        border: none;
        padding: 0;
        margin-block-start: 0;
    }

    .c-alternate-names-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .c-alternate-names-list li {
        font-size: var(--font-size-sm);
        color: var(--color-text-secondary);
        margin-block-end: var(--spacing-xs);
        padding-inline-start: var(--spacing-md);
        position: relative;
    }

    .c-alternate-names-list li::before {
        content: "•";
        position: absolute;
        left: 0;
        color: var(--color-text);
    }

    .c-move-content {
        font-size: var(--font-size-base);
        line-height: var(--line-height-loose);
    }

    .c-move-content section {
        margin-block-end: var(--spacing-xl);
    }

    .c-move-content h3 {
        font-size: var(--font-size-xl);
        color: var(--color-text);
        margin-block-end: var(--spacing-sm);
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        border-block-start: var(--border-thin) solid var(--color-text);
        padding-block-start: var(--spacing-sm);
        margin-block-start: var(--spacing-lg);
    }
    
    .c-move-content h3:first-of-type {
        margin-block-start: 0;
    }

    .c-move-content p {
        color: var(--color-text-secondary);
        margin-block-end: var(--spacing-sm);
    }

    .c-move-content ul {
        margin-inline-start: var(--spacing-md);
        margin-block-start: var(--spacing-sm);
    }

    .c-move-content li {
        margin-block-end: var(--spacing-xs);
        color: var(--color-text-secondary);
    }

    .c-button-text {
        display: inline;
    }

    .c-disclaimer {
        margin-block-start: var(--spacing-2xl);
        padding-block-start: var(--spacing-lg);
        border-block-start: var(--border-thin) solid var(--color-text);
        font-size: var(--font-size-sm);
        color: var(--color-text-secondary);
    }

    .c-disclaimer p {
        margin: 0;
    }

    .c-disclaimer a {
        color: var(--color-text);
        text-decoration: underline;
        font-weight: 600;
    }

    .c-disclaimer a:hover {
        text-decoration: none;
    }

    .c-disclaimer a:focus-visible {
        outline: var(--border-thick) solid var(--color-text);
        outline-offset: 2px;
    }

    .c-not-found {
        margin-block-start: var(--spacing-lg);
        padding: var(--spacing-lg);
        border: var(--border-thick) solid var(--color-text);
        font-size: var(--font-size-base);
        color: var(--color-text-secondary);
        line-height: var(--line-height-loose);
    }

    .c-not-found p {
        margin: 0;
    }

    .c-not-found a {
        color: var(--color-text);
        text-decoration: underline;
        font-weight: 600;
    }

    .c-not-found a:hover {
        text-decoration: none;
    }

    .c-not-found a:focus-visible {
        outline: var(--border-thick) solid var(--color-text);
        outline-offset: 2px;
    }

    footer {
        text-align: center;
        margin-block-start: var(--spacing-xl);
        padding-block-start: var(--spacing-md);
        border-block-start: var(--border-thin) solid var(--color-text);
        color: var(--color-text-secondary);
        font-size: var(--font-size-sm);
        font-weight: 500;
        letter-spacing: 0.05em;
    }

    footer a {
        color: var(--color-text);
        text-decoration: underline;
    }

    footer a:hover {
        text-decoration: none;
    }

    footer a:focus-visible {
        outline: var(--border-thick) solid var(--color-text);
        outline-offset: 2px;
    }

    .c-nav {
        margin-block-start: var(--spacing-md);
        margin-block-end: var(--spacing-xl);
    }

    .c-nav-link {
        color: var(--color-text);
        text-decoration: underline;
        font-weight: 600;
    }

    .c-nav-link:hover {
        text-decoration: none;
    }

    .c-nav-link:focus-visible {
        outline: var(--border-thick) solid var(--color-text);
        outline-offset: 2px;
    }

    .c-about-section {
        margin-block-end: var(--spacing-2xl);
    }

    .c-about-section h2 {
        font-size: var(--font-size-2xl);
        color: var(--color-text);
        margin-block-end: var(--spacing-lg);
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        border-block-start: var(--border-thin) solid var(--color-text);
        padding-block-start: var(--spacing-md);
    }

    .c-about-section p {
        color: var(--color-text-secondary);
        margin-block-end: var(--spacing-lg);
        line-height: var(--line-height-loose);
    }

    .c-resources-section {
        margin-block-end: var(--spacing-xl);
    }

    .c-resources-section h2 {
        font-size: var(--font-size-2xl);
        color: var(--color-text);
        margin-block-end: var(--spacing-lg);
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        border-block-start: var(--border-thin) solid var(--color-text);
        padding-block-start: var(--spacing-md);
    }

    .c-resources-section h3 {
        font-size: var(--font-size-xl);
        color: var(--color-text);
        margin-block-start: var(--spacing-xl);
        margin-block-end: var(--spacing-md);
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }

    .c-resources-section h3:first-of-type {
        margin-block-start: var(--spacing-lg);
    }

    .c-resources-list {
        list-style: none;
        margin: 0;
        padding: 0;
        margin-block-end: var(--spacing-xl);
    }

    .c-resources-list li {
        margin-block-end: var(--spacing-sm);
        padding-inline-start: var(--spacing-md);
        position: relative;
        color: var(--color-text-secondary);
        line-height: var(--line-height-loose);
    }

    .c-resources-list li::before {
        content: "•";
        position: absolute;
        left: 0;
        color: var(--color-text);
    }

    .c-resources-list a {
        color: var(--color-text);
        text-decoration: underline;
        font-weight: 600;
    }

    .c-resources-list a:hover {
        text-decoration: none;
    }

    .c-resources-list a:focus-visible {
        outline: var(--border-thick) solid var(--color-text);
        outline-offset: 2px;
    }

    .c-resources-sublist {
        list-style: none;
        margin: var(--spacing-xs) 0 var(--spacing-sm) 0;
        padding: 0;
        padding-inline-start: var(--spacing-lg);
    }

    .c-resources-sublist li {
        margin-block-end: var(--spacing-xs);
        padding-inline-start: var(--spacing-md);
        position: relative;
        color: var(--color-text-secondary);
        font-size: var(--font-size-sm);
    }

    .c-resources-sublist li::before {
        content: "•";
        position: absolute;
        left: 0;
        color: var(--color-text);
    }
}

@layer utilities {
    .u-visually-hidden {
        position: absolute;
        inline-size: 1px;
        block-size: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(0.625rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: no-preference) {
    @layer components {
        .c-move-history {
            animation: fadeIn 0.5s ease-in;
        }
    }
}

/* Mobile Responsive */
@media (max-width: 37.5rem) {
    @layer components {
        .c-container {
            padding: var(--spacing-md);
            margin-block-start: var(--spacing-md);
            margin-block-end: var(--spacing-md);
        }

        h1 {
            font-size: var(--font-size-3xl);
        }

        .c-subtitle {
            font-size: var(--font-size-base);
        }

        .c-input-group {
            flex-direction: column;
        }

        .c-search-input {
            inline-size: 100%;
        }

        .c-search-button {
            inline-size: 100%;
        }

        .c-move-name {
            font-size: var(--font-size-2xl);
        }

        .c-move-content h3 {
            font-size: var(--font-size-lg);
        }
    }
}