@layer reset, base, components, pages;

@layer reset {
    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }
    html {
        height: 100%;
        color-scheme: light dark;
    }
    body {
        height: 100%;
    }
    body {
        margin: 0;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    textarea,
    input,
    select,
    button {
        font: inherit;
    }
}

@layer base {
    :root {
        --bg: #e0e0e0;
        --fg: #121212;
        --border-color: #000000;

        /* Neobrutalist Palette */
        --c-primary: #a390e4; /* Purple */
        --c-secondary: #90e4c1; /* Mint */
        --c-accent: #ffc900; /* Yellow */
        --c-danger: #ff6b6b; /* Red */
        --c-surface: #ffffff;

        --border-width: 2px;
        --border: var(--border-width) solid var(--border-color);
        --shadow: 4px 4px 0 0 var(--border-color);
        --shadow-sm: 2px 2px 0 0 var(--border-color);
        --shadow-hover: 6px 6px 0 0 var(--border-color);

        --pad-xs: 0.25rem;
        --pad-sm: 0.5rem;
        --pad-md: 0.75rem;
        --pad-lg: 1.5rem;

        --font-sans: "Space Grotesk", system-ui, -apple-system, sans-serif;
        --font-mono: "JetBrains Mono", "Courier New", monospace;
        --checkerboard-color: light-dark(rgb(from #000 r g b / 0.2), rgb(from #fff r g b / 0.2));
    }

    @media (prefers-color-scheme: dark) {
        :root {
            /* Gruvbox Dark Palette */
            --bg: #1d2021;
            --fg: #ebdbb2;
            --border-color: #504945;

            --c-primary: #d3869b; /* Gruvbox Purple */
            --c-secondary: #8ec07c; /* Gruvbox Green */
            --c-accent: #fabd2f; /* Gruvbox Yellow */
            --c-danger: #fb4934; /* Gruvbox Red */
            --c-surface: #282828;
        }
    }

    body {
        font-family: var(--font-sans);
        background-color: var(--bg);
        color: var(--fg);
        line-height: 1.4;
        /* Dot pattern background */
        background-image: radial-gradient(rgb(from var(--border-color) r g b / 0.5) 1px, transparent 1px);
        background-size: 20px 20px;
    }

    code,
    pre,
    textarea,
    .mono {
        font-family: var(--font-mono);
    }

    h1,
    h2,
    h3 {
        margin: 0;
        font-weight: 900;
        letter-spacing: -0.02em;
    }
}

@layer components {
    .wrap {
        max-width: 50rem;
        margin: 0 auto;
        padding: var(--pad-lg);
    }

    .card {
        background: var(--c-surface);
        border: var(--border);
        box-shadow: var(--shadow);
        padding: var(--pad-md);
        display: grid;
        gap: var(--pad-md);
    }

    .btn,
    button,
    a.button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: var(--pad-sm) var(--pad-md);

        --button-accent: var(--c-primary);
        --button-accent-border: oklch(from var(--button-accent) calc(1.1 - l) c h);

        background: var(--button-accent);
        color: oklch(from var(--button-accent) calc(1 - l) c h);
        border: var(--border-width) solid var(--button-accent-border);
        box-shadow: 2px 2px 0 0 var(--button-accent-border);

        font-weight: 800;
        text-decoration: none;
        cursor: pointer;
        transition: all 0.1s;
        gap: 0.5rem;
        font-size: 14px;
        text-transform: uppercase;

        &:hover {
            transform: translate(-2px, -2px);
            box-shadow: var(--shadow);
            filter: brightness(1.1);
        }

        &:active {
            transform: translate(2px, 2px);
            box-shadow: 0 0 0 0 var(--border-color);
        }

        &[disabled] {
            opacity: 0.5;
            cursor: not-allowed;
            box-shadow: none;
            transform: none;
            filter: grayscale(1);
        }

        .icon {
            font-size: 0.9em;
            line-height: 1;
        }

        &.danger {
            --button-accent: var(--c-danger);
            --button-accent-border: oklch(from var(--button-accent) calc(1.1 - l) c h);
        }
    }

    /* Variant buttons */
    .btn-accent {
        background: var(--c-accent);
    }
    .btn-secondary {
        background: var(--c-secondary);
    }
    .btn-danger {
        background: var(--c-danger);
        color: oklch(from var(--c-danger) calc(1.1 - l) c h);
    }

    input[type="text"],
    input[type="file"],
    textarea,
    select {
        width: 100%;
        padding: var(--pad-sm);
        border: var(--border);
        background: var(--c-surface);
        border-radius: 0;
        outline: none;
        font-size: 14px;
        transition: box-shadow 0.1s;

        &:focus {
            box-shadow: var(--shadow-sm);
            background: var(--c-surface);
        }
    }

    textarea {
        resize: vertical;
    }

    .label {
        --label-accent: var(--c-accent);
        --label-accent-border: oklch(from var(--label-accent) calc(1.3 - l) c h);

        font-weight: 800;
        /* text-transform: uppercase; */
        font-size: 13px;
        margin-bottom: 0.25rem;
        display: block;
        background: var(--label-accent);
        color: oklch(from var(--label-accent) calc(1.1 - l) c h);
        display: inline-block;
        padding: 0.1rem 0.3rem;
        border: var(--border-width) solid var(--label-accent-border);
        box-shadow: 2px 2px 0 0 var(--label-accent-border);
    }

    .hint {
        font-size: 13px;
        font-weight: 500;
        opacity: 0.7;

        display: grid;
        align-content: center;
    }

    .error {
        background: var(--c-danger);
        color: var(--fg);
        border: var(--border);
        padding: var(--pad-sm);
        font-weight: bold;
        box-shadow: var(--shadow);
        white-space: pre-wrap;
        margin-top: var(--pad-sm);
    }

    .field {
        display: grid;
        gap: 0.25rem;

        label {
            font-size: 14px;
            font-weight: bold;
        }
    }

    .field-group {
        display: grid;
        gap: 0.25rem;
    }

    .field-group-title {
        font-size: 14px;
        font-weight: bold;
        margin: 0;
        text-transform: none;
        letter-spacing: normal;
    }

    .pane-title {
        font-weight: 800;
        text-transform: uppercase;
        font-size: 14px;
        margin: 0;
        display: block;
        background: var(--c-accent);
        color: oklch(from var(--c-accent) calc(1.1 - l) c h);
        display: inline-block;
        padding: 0.1rem 0.3rem;

        border: var(--border-width) solid oklch(from var(--c-accent) calc(1.2 - l) c h);
        box-shadow: 2px 2px 0 0 oklch(from var(--c-accent) calc(1.2 - l) c h);
    }

    /* Visually hidden but accessible (for native input) */
    .sr-only {
        position: absolute;
        width: 1px !important;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }

    /* Dropzone styling (applies to label or div) */
    .dropzone {
        cursor: pointer;
        position: relative;
        padding: 2rem;
        text-align: center;
        border: 2px dashed var(--border-color);
        background: var(--bg);
        transition: all 0.2s;

        &:hover {
            background: oklch(from var(--bg) calc(l - 0.05) c h);
        }

        &.drag-over {
            background: var(--c-accent);
            transform: scale(1.01);
        }
    }
}

@layer pages {
    /* Index page */
    .page-index {
        display: grid;
        place-items: center;
        min-height: 100vh;

        .wrap {
            width: 100%;
        }

        h1 {
            background: var(--c-secondary);
            color: oklch(from var(--c-secondary) calc(1.1 - l) c h);

            border: var(--border);
            box-shadow: var(--shadow);
            padding: var(--pad-sm);
            text-align: center;
            margin-bottom: var(--pad-md);
            font-size: 24px;
        }

        p {
            background: var(--c-surface);
            border: var(--border);
            padding: var(--pad-sm);
            margin-bottom: var(--pad-md);
            font-size: 14px;
            font-weight: 500;
        }

        .preview {
            display: none;
            margin-top: var(--pad-sm);
            padding: var(--pad-sm);
            border: var(--border);
            background: var(--bg);

            img {
                border: var(--border);
            }

            .meta {
                margin-top: var(--pad-xs);
                font-family: var(--font-mono);
                font-size: 12px;
                border-top: var(--border);
                padding-top: var(--pad-xs);
            }
        }
    }

    /* Edit page */
    .page-edit {
        user-select: none;

        display: grid;
        grid-template-rows: auto 1fr;
        min-height: 100vh;

        .topbar {
            display: flex;
            gap: var(--pad-md);
            align-items: center;
            padding: var(--pad-sm) var(--pad-md);
            border-bottom: var(--border);
            background: var(--c-surface);
            z-index: 10;

            a {
                text-decoration: none;
                font-weight: 800;
                text-transform: uppercase;
                color: var(--fg);
                &:hover {
                    text-decoration: underline;
                }
            }

            .label {
                margin: 0;
                box-shadow: none;
                --label-accent: var(--c-secondary);
            }
        }

        .container {
            display: grid;
            grid-template-columns: 40% 60%;
            height: 100%;
        }

        .pane {
            padding: var(--pad-md);
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            align-items: start;
            gap: var(--pad-md);
            height: 100%;

            &.left {
                border-right: var(--border);
                background: var(--c-surface);
            }

            &.right {
                background: var(--bg);
            }
        }

        .edit-form {
            display: flex;
            flex-direction: column;
            gap: var(--pad-md);
            flex: 1;
            width: 100%;
            height: 100%;
            min-height: 0;

            .field,
            .field-group {
                display: flex;
                flex-direction: column;
                gap: 0.25rem;

                &:has(textarea) {
                    flex: 1;
                    min-height: 0;
                }
            }

            .prompt-row {
                display: flex;
                gap: var(--pad-sm);

                input {
                    flex: 1;
                }
                button {
                    white-space: nowrap;
                }
            }

            textarea {
                flex: 1;
                font-family: var(--font-mono);
                font-size: 12px;
                line-height: 1.5;
                white-space: pre;
                border: var(--border);
                box-shadow: inset 2px 2px 0 0 rgba(0, 0, 0, 0.05);

                min-height: 20rem;
            }

            .actions {
                display: flex;
                gap: var(--pad-sm);
            }
        }

        .preview {
            display: grid;
            place-items: center;
            border: var(--border);
            background: var(--c-surface);
            background-image: linear-gradient(
                    45deg,
                    var(--checkerboard-color) 25%,
                    transparent 25%,
                    transparent 75%,
                    var(--checkerboard-color) 75%,
                    var(--checkerboard-color)
                ),
                linear-gradient(
                    45deg,
                    var(--checkerboard-color) 25%,
                    transparent 25%,
                    transparent 75%,
                    var(--checkerboard-color) 75%,
                    var(--checkerboard-color)
                );
            background-size: 12px 12px;
            background-position: 0 0, 6px 6px;
            padding: var(--pad-md);
            overflow: auto;
            box-shadow: var(--shadow);

            img {
                max-width: 100%;
            }
        }

        .downloads {
            display: flex;
            flex-wrap: wrap;
            gap: var(--pad-sm);

            .button {
                --button-accent: var(--c-surface);
                --button-accent-border: var(--border-color);

                padding: var(--pad-xs) var(--pad-sm);
            }
        }

        @media (max-width: 60rem) {
            .container {
                grid-template-columns: 1fr;
                grid-template-rows: 1fr auto;
            }
            .pane.left {
                border-right: none;
                border-bottom: var(--border);
            }

            .topbar {
                flex-direction: column;
                align-items: start;
            }
        }
    }
}