/**
 * minTemplates - Base CSS
 * Framework-agnostische Basis-Styles
 * WCAG 2.2 AA konform
 *
 * @author Stefan Grothus <info@made-in-nature.de>
 * @copyright made in nature Projektagentur
 */

/* ============================================================================
   CSS Custom Properties (Design Tokens)
   ============================================================================ */

:root {
    /* Colors */
    --min-primary: #1a73e8;
    --min-primary-dark: #1557b0;
    --min-primary-light: #4285f4;
    --min-secondary: #6c757d;
    --min-success: #188038;
    --min-warning: #f9a825;
    --min-danger: #d32f2f;
    --min-info: #0277bd;

    /* Text Colors */
    --min-text-primary: #1e1e1e;
    --min-text-secondary: #4a4a4a;
    --min-text-muted: #6b6b6b;
    --min-text-light: #ffffff;

    /* Background Colors */
    --min-bg-light: #f8f9fa;
    --min-bg-dark: #212529;
    --min-bg-primary: var(--min-primary);
    --min-bg-secondary: var(--min-secondary);

    /* Gradients */
    --min-gradient-start: #667eea;
    --min-gradient-end: #764ba2;

    /* Spacing Scale */
    --min-space-0: 0;
    --min-space-1: 0.25rem;
    --min-space-2: 0.5rem;
    --min-space-3: 1rem;
    --min-space-4: 1.5rem;
    --min-space-5: 2rem;
    --min-space-6: 3rem;
    --min-space-7: 4rem;
    --min-space-8: 6rem;

    /* Typography */
    --min-font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --min-font-size-base: 1rem;
    --min-line-height: 1.6;

    /* Breakpoints (for reference in JS) */
    --min-bp-xs: 0;
    --min-bp-sm: 576px;
    --min-bp-md: 768px;
    --min-bp-lg: 992px;
    --min-bp-xl: 1200px;
    --min-bp-xxl: 1400px;

    /* Container Max Widths */
    --min-container-sm: 540px;
    --min-container-md: 720px;
    --min-container-lg: 960px;
    --min-container-xl: 1140px;
    --min-container-xxl: 1320px;

    /* Borders */
    --min-border-radius: 0.375rem;
    --min-border-color: #dee2e6;

    /* Shadows */
    --min-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --min-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --min-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --min-transition-fast: 150ms ease;
    --min-transition: 300ms ease;
    --min-transition-slow: 500ms ease;

    /* Z-Index Scale */
    --min-z-dropdown: 1000;
    --min-z-sticky: 1020;
    --min-z-fixed: 1030;
    --min-z-modal-backdrop: 1040;
    --min-z-modal: 1050;
    --min-z-tooltip: 1080;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --min-text-primary: #e8eaed;
        --min-text-secondary: #bdc1c6;
        --min-text-muted: #9aa0a6;
        --min-bg-light: #2d2d2d;
        --min-bg-dark: #1e1e1e;
        --min-border-color: #3d3d3d;
    }
}

/* ============================================================================
   Skip Links (Accessibility)
   ============================================================================ */

.min-skip-links {
    position: absolute;
    top: 0;
    left: 0;
    z-index: var(--min-z-tooltip);
}

.min-skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    padding: 1rem 2rem;
    background: var(--min-primary);
    color: var(--min-text-light);
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 var(--min-border-radius) 0;
}

.min-skip-link:focus {
    position: static;
    width: auto;
    height: auto;
    left: 0;
    outline: 3px solid var(--min-primary-dark);
    outline-offset: 2px;
}

/* ============================================================================
   Layout Components
   ============================================================================ */

/* Main Layout */
.min-layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.min-main {
    flex: 1;
}

.min-main--fullwidth {
    width: 100%;
}

/* Sidebar Layout */
.min-layout-sidebar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--min-space-5);
}

.min-sidebar {
    padding: var(--min-space-4);
}

/* ============================================================================
   Back to Top Button
   ============================================================================ */

.min-back-to-top {
    position: fixed;
    bottom: var(--min-space-5);
    right: var(--min-space-5);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--min-primary);
    color: var(--min-text-light);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--min-shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity var(--min-transition), transform var(--min-transition), visibility var(--min-transition);
    z-index: var(--min-z-fixed);
}

.min-back-to-top:not([hidden]) {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.min-back-to-top:hover,
.min-back-to-top:focus-visible {
    background: var(--min-primary-dark);
    transform: scale(1.1);
}

.min-back-to-top:focus-visible {
    outline: 3px solid var(--min-primary-light);
    outline-offset: 2px;
}

/* ============================================================================
   Utility Classes
   ============================================================================ */

/* Visually Hidden (for screen readers) */
.min-visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Focus Visible */
.min-focus-visible:focus-visible {
    outline: 3px solid var(--min-primary);
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================================================
   OpenProps Fallback Classes (when OpenProps is not loaded)
   ============================================================================ */

.op-container {
    max-width: var(--min-container-xl);
    margin-inline: auto;
    padding-inline: var(--min-space-4);
}

.op-container-fluid {
    width: 100%;
    padding-inline: var(--min-space-4);
}

.op-container-narrow {
    max-width: var(--min-container-md);
    margin-inline: auto;
    padding-inline: var(--min-space-4);
}

.op-container-wide {
    max-width: var(--min-container-xxl);
    margin-inline: auto;
    padding-inline: var(--min-space-4);
}

/* ============================================================================
   Print Styles
   ============================================================================ */

@media print {
    .min-skip-links,
    .min-back-to-top,
    .min-header,
    .min-footer {
        display: none !important;
    }

    .min-main {
        width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }

    a[href^="#"]::after,
    a[href^="javascript:"]::after {
        content: "";
    }
}