@casoon/dragonfly/effects/themes/neumorphism.css

Modular, lightweight CSS framework and design system for modern web projects. Optimized for Astro JS, LightningCSS and Container Queries with @layer-based architecture and comprehensive accessibility.

/**
 * Neumorphismus-Effekte
 * 
 * Diese Datei enthält verschiedene Neumorphismus-Effekte für moderne UIs.
 * Die Effekte sind für Barrierefreiheit optimiert und unterstützen Dark Mode.
 */

@layer components {
    /* Basisvariablen für Neumorphismus */
    :root {
        --neuro-radius: var(--spacing-4);
        --neuro-shadow-intensity: 0.1;
        --neuro-shadow-distance: 0.5rem;
        --neuro-shadow-blur: var(--spacing-4);
        --neuro-light-shadow-color: rgb(255 255 255 / var(--neuro-shadow-intensity));
        --neuro-dark-shadow-color: rgb(0 0 0 / var(--neuro-shadow-intensity));
        --neuro-background: var(--surface-3, #f0f0f0);
        --neuro-transition: 200ms var(--easing-decelerate);
        --neuro-surface-tint: 0.02;
    }

    /* Basisklasse für Neumorphismus */
    .neuro {
        background-color: var(--neuro-background);
        border-radius: var(--neuro-radius);
        overflow: hidden;
        position: relative;
        transition: all var(--neuro-transition);
    }

    /* Konvexe Elevation (herausstehend) */
    .neuro-convex {
        background: linear-gradient(
            145deg,
            color-mix(in srgb, var(--neuro-background) 96%, white),
            color-mix(in srgb, var(--neuro-background) 92%, black)
        );
        box-shadow:
            var(--neuro-shadow-distance) var(--neuro-shadow-distance) var(--neuro-shadow-blur) var(--neuro-dark-shadow-color),
            calc(-1 * var(--neuro-shadow-distance)) calc(-1 * var(--neuro-shadow-distance)) var(--neuro-shadow-blur) var(--neuro-light-shadow-color);
    }

    /* Konkave Elevation (eingedrückt) */
    .neuro-concave {
        background: linear-gradient(
            145deg,
            color-mix(in srgb, var(--neuro-background) 92%, black),
            color-mix(in srgb, var(--neuro-background) 96%, white)
        );
        box-shadow: inset
            var(--neuro-shadow-distance) var(--neuro-shadow-distance) var(--neuro-shadow-blur) var(--neuro-dark-shadow-color),
            inset calc(-1 * var(--neuro-shadow-distance)) calc(-1 * var(--neuro-shadow-distance)) var(--neuro-shadow-blur) var(--neuro-light-shadow-color);
    }

    /* Flache Elevation */
    .neuro-flat {
        box-shadow:
            var(--neuro-shadow-distance) var(--neuro-shadow-distance) var(--neuro-shadow-blur) var(--neuro-dark-shadow-color),
            calc(-1 * var(--neuro-shadow-distance)) calc(-1 * var(--neuro-shadow-distance)) var(--neuro-shadow-blur) var(--neuro-light-shadow-color);
    }

    /* Neumorphe Buttons */
    .neuro-button {
        align-items: center;
        background: var(--neuro-background);
        border: none;
        border-radius: var(--neuro-radius);
        cursor: pointer;
        display: inline-flex;
        font-weight: var(--font-weight-medium);
        justify-content: center;
        padding: 0.75rem 1.5rem;
        position: relative;
        transition: all var(--neuro-transition);
        user-select: none;
        vertical-align: middle;
    }

    /* Button-Varianten */
    .neuro-button-convex {
        background: linear-gradient(
            145deg,
            color-mix(in srgb, var(--neuro-background) 96%, white),
            color-mix(in srgb, var(--neuro-background) 92%, black)
        );
        box-shadow:
            var(--neuro-shadow-distance) var(--neuro-shadow-distance) var(--neuro-shadow-blur) var(--neuro-dark-shadow-color),
            calc(-1 * var(--neuro-shadow-distance)) calc(-1 * var(--neuro-shadow-distance)) var(--neuro-shadow-blur) var(--neuro-light-shadow-color);
    }

    .neuro-button-convex:hover {
        box-shadow:
            calc(var(--neuro-shadow-distance) * 1.2) calc(var(--neuro-shadow-distance) * 1.2) calc(var(--neuro-shadow-blur) * 1.2) var(--neuro-dark-shadow-color),
            calc(-1.2 * var(--neuro-shadow-distance)) calc(-1.2 * var(--neuro-shadow-distance)) calc(var(--neuro-shadow-blur) * 1.2) var(--neuro-light-shadow-color);
    }

    .neuro-button-convex:active,
    .neuro-button-convex.active {
        box-shadow: inset
            calc(var(--neuro-shadow-distance) * 0.5) calc(var(--neuro-shadow-distance) * 0.5) calc(var(--neuro-shadow-blur) * 0.7) var(--neuro-dark-shadow-color),
            inset calc(-0.5 * var(--neuro-shadow-distance)) calc(-0.5 * var(--neuro-shadow-distance)) calc(var(--neuro-shadow-blur) * 0.7) var(--neuro-light-shadow-color);
        transform: translateY(var(--border-width-thick));
    }

    /* Neumorphe Karten */
    .neuro-card {
        background: var(--neuro-background);
        border-radius: var(--neuro-radius);
        overflow: hidden;
        padding: 1.5rem;
        position: relative;
        transition: all var(--neuro-transition);
    }

    .neuro-card-elevated {
        box-shadow:
            var(--neuro-shadow-distance) var(--neuro-shadow-distance) calc(var(--neuro-shadow-blur) * 1.5) var(--neuro-dark-shadow-color),
            calc(-1 * var(--neuro-shadow-distance)) calc(-1 * var(--neuro-shadow-distance)) calc(var(--neuro-shadow-blur) * 1.5) var(--neuro-light-shadow-color);
    }

    /* Neumorphe Eingabefelder */
    .neuro-input {
        background: var(--neuro-background);
        border: none;
        border-radius: var(--neuro-radius);
        box-shadow: inset
            calc(var(--neuro-shadow-distance) * 0.4) calc(var(--neuro-shadow-distance) * 0.4) calc(var(--neuro-shadow-blur) * 0.6) var(--neuro-dark-shadow-color),
            inset calc(-0.4 * var(--neuro-shadow-distance)) calc(-0.4 * var(--neuro-shadow-distance)) calc(var(--neuro-shadow-blur) * 0.6) var(--neuro-light-shadow-color);
        color: inherit;
        font-size: var(--spacing-4);
        outline: none;
        padding: 0.75rem var(--spacing-4);
        transition: all var(--neuro-transition);
        width: 100%;
    }

    .neuro-input:focus {
        box-shadow: inset
            calc(var(--neuro-shadow-distance) * 0.5) calc(var(--neuro-shadow-distance) * 0.5) calc(var(--neuro-shadow-blur) * 0.7) var(--neuro-dark-shadow-color),
            inset calc(-0.5 * var(--neuro-shadow-distance)) calc(-0.5 * var(--neuro-shadow-distance)) calc(var(--neuro-shadow-blur) * 0.7) var(--neuro-light-shadow-color);
    }

    /* Neumorphe Checkbox */
    .neuro-checkbox {
        appearance: none;
        background: var(--neuro-background);
        border: none;
        border-radius: calc(var(--neuro-radius) * 0.5);
        box-shadow:
            calc(var(--neuro-shadow-distance) * 0.3) calc(var(--neuro-shadow-distance) * 0.3) calc(var(--neuro-shadow-blur) * 0.5) var(--neuro-dark-shadow-color),
            calc(-0.3 * var(--neuro-shadow-distance)) calc(-0.3 * var(--neuro-shadow-distance)) calc(var(--neuro-shadow-blur) * 0.5) var(--neuro-light-shadow-color);
        cursor: pointer;
        height: 1%.5rem;
        margin: 0;
        position: relative;
        transition: all var(--neuro-transition);
        width: 1%.5rem;
    }

    .neuro-checkbox:checked {
        box-shadow: inset
            calc(var(--neuro-shadow-distance) * 0.3) calc(var(--neuro-shadow-distance) * 0.3) calc(var(--neuro-shadow-blur) * 0.5) var(--neuro-dark-shadow-color),
            inset calc(-0.3 * var(--neuro-shadow-distance)) calc(-0.3 * var(--neuro-shadow-distance)) calc(var(--neuro-shadow-blur) * 0.5) var(--neuro-light-shadow-color);
    }

    .neuro-checkbox:checked::after {
        border-bottom: var(--border-width-thick) solid var(--accent-6, currentColor);
        border-right: var(--border-width-thick) solid var(--accent-6, currentColor);
        content: '';
        display: block;
        height: 0%.5rem;
        left: 5%0%;
        position: absolute;
        top: var(--percentage-45);
        transform: translate(-50%, -50%) rotate(45deg);
        width: 0%.25rem;
    }

    /* Intensitäts-Varianten */
    .neuro-intensity-low {
        --neuro-shadow-intensity: 0.05;
    }

    .neuro-intensity-medium {
        --neuro-shadow-intensity: 0.1;
    }

    .neuro-intensity-high {
        --neuro-shadow-intensity: 0.15;
    }

    /* Größen-Varianten */
    .neuro-small {
        --neuro-radius: 0.5rem;
        --neuro-shadow-distance: 0.25rem;
        --neuro-shadow-blur: 0.5rem;
    }

    .neuro-medium {
        --neuro-radius: var(--spacing-4);
        --neuro-shadow-distance: 0.5rem;
        --neuro-shadow-blur: var(--spacing-4);
    }

    .neuro-large {
        --neuro-radius: 1.5rem;
        --neuro-shadow-distance: 0.75rem;
        --neuro-shadow-blur: 1.5rem;
    }
}

/* Dark Mode Anpassungen */
@media (prefers-color-scheme: dark) {
    @layer components {
        :root {
            --neuro-shadow-intensity: 0.2;
            --neuro-light-shadow-color: rgb(255 255 255 / calc(var(--neuro-shadow-intensity) * 0.6));
            --neuro-dark-shadow-color: rgb(0 0 0 / var(--neuro-shadow-intensity));
        }

        .neuro-convex,
        .neuro-button-convex {
            background: linear-gradient(
                145deg,
                color-mix(in srgb, var(--neuro-background) 92%, white),
                color-mix(in srgb, var(--neuro-background) 94%, black)
            );
        }

        .neuro-concave {
            background: linear-gradient(
                145deg,
                color-mix(in srgb, var(--neuro-background) 94%, black),
                color-mix(in srgb, var(--neuro-background) 92%, white)
            );
        }
    }
}

/* Reduzierte Bewegung */
@media (prefers-reduced-motion: reduce) {
    @layer components {
        .neuro,
        .neuro-button,
        .neuro-card,
        .neuro-input,
        .neuro-checkbox {
            transition: var(--transition-none);
        }
    }
}