/* ==========================================================================
   LGBT+ Netzwerk Rhein-Ruhr
   Zentrale Styles
   Robuste Theme-Architektur über html[data-theme]
   ========================================================================== */

:root {
    color-scheme: light dark;
    --content-width: 960px;
    --content-width-narrow: 900px;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.12);
    --transition-fast: 180ms ease;
    --transition-normal: 240ms ease;
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

html[data-theme="light"] {
    --page-bg: #f8f9fa;
    --content-bg: #ffffff;
    --content-bg-soft: #f1f5f9;
    --text-color: #212529;
    --text-muted: #475569;
    --heading-color: #0f172a;
    --border-color: #d9e2ec;
    --border-strong: #c2cfdb;
    --nav-bg: rgba(255, 255, 255, 0.94);
    --nav-border: #d9e2ec;
    --accent-color: #0066cc;
    --accent-hover: #0052a3;
    --accent-contrast: #ffffff;
    --focus-ring: #0066cc;
    --hero-caption-color: #475569;
}

html[data-theme="dark"] {
    --page-bg: #0f172a;
    --content-bg: #1e293b;
    --content-bg-soft: #172131;
    --text-color: #e2e8f0;
    --text-muted: #cbd5e1;
    --heading-color: #f8fafc;
    --border-color: #334155;
    --border-strong: #475569;
    --nav-bg: rgba(30, 41, 59, 0.94);
    --nav-border: #334155;
    --accent-color: #38bdf8;
    --accent-hover: #7dd3fc;
    --accent-contrast: #0f172a;
    --focus-ring: #7dd3fc;
    --hero-caption-color: #cbd5e1;
    --shadow-sm: 0 4px 14px rgba(2, 6, 23, 0.24);
    --shadow-md: 0 12px 36px rgba(2, 6, 23, 0.34);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background-color: var(--page-bg);
    color: var(--text-color);
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img,
svg {
    display: block;
    max-width: 100%;
}

main {
    display: block;
    max-width: var(--content-width-narrow);
    margin: 0 auto;
    padding: var(--space-10) var(--space-5) var(--space-16);
}

p,
ul,
ol {
    margin-top: 0;
    margin-bottom: 1.25rem;
}

ul,
ol {
    padding-left: 1.25rem;
}

li + li {
    margin-top: 0.5rem;
}

a {
    color: var(--accent-color);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

a:hover {
    color: var(--accent-hover);
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

.skip-link {
    position: absolute;
    top: -200px;
    left: var(--space-4);
    z-index: 2000;
    padding: 0.75rem 1rem;
    background-color: var(--accent-color);
    color: var(--accent-contrast);
    text-decoration: none;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.skip-link:focus {
    top: var(--space-4);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(14px);
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--nav-border);
}

.header-container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0.875rem 1.25rem;
    display: flex;
    align-items: center;
    gap: var(--space-4);
    position: relative;
}

.logo-container {
    flex: 0 0 auto;
}

.logo-container a {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.logo {
    width: auto;
    height: 48px;
}

.header-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle,
.menu-button {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--content-bg);
    color: var(--text-color);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.theme-toggle:hover,
.menu-button:hover {
    background-color: var(--content-bg-soft);
    border-color: var(--border-strong);
    transform: translateY(-1px);
}

.theme-toggle__icon {
    line-height: 1;
    font-size: 1rem;
}

.theme-toggle__label {
    font-size: 0.95rem;
    font-weight: 600;
}

.theme-toggle--mobile {
    width: 100%;
    justify-content: center;
}

.theme-toggle--desktop .theme-toggle__label {
    display: none;
}

.menu-button {
    position: relative;
    flex-direction: column;
    padding-inline: 0.75rem;
}

.menu-button__line {
    width: 22px;
    height: 2px;
    border-radius: 999px;
    background-color: currentColor;
    transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.menu-button.is-open .menu-button__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-button.is-open .menu-button__line:nth-child(2) {
    opacity: 0;
}

.menu-button.is-open .menu-button__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.site-navigation {
    margin-left: auto;
}

.main-nav {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 44px;
    padding: 0.625rem 0.875rem;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.nav-item > a:hover,
.nav-item > a:focus-visible {
    background-color: var(--content-bg-soft);
    border-color: var(--border-color);
}

.nav-item > a.active,
.nav-item > a[aria-current="page"] {
    background-color: var(--accent-color);
    color: var(--accent-contrast);
    border-color: var(--accent-color);
    font-weight: 700;
}

.nav-indicator {
    display: inline-block;
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.nav-item > a.active .nav-indicator,
.nav-item > a[aria-current="page"] .nav-indicator {
    width: auto;
    opacity: 1;
}

.submenu {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    min-width: 240px;
    list-style: none;
    margin: 0;
    padding: 0.4rem 0;
    background-color: var(--content-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    display: none;
    z-index: 1200;
}

.submenu li {
    margin: 0;
}

.submenu li a {
    display: block;
    padding: 0.7rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.95rem;
}

.submenu li a:hover,
.submenu li a:focus-visible {
    background-color: var(--content-bg-soft);
    color: var(--accent-color);
}

.nav-item:hover .submenu,
.nav-item:focus-within .submenu {
    display: block;
}

.mobile-menu-tools {
    display: none;
}

h1,
h2,
h3 {
    margin-top: 0;
    color: var(--heading-color);
    line-height: 1.2;
}

h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

h2 {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    margin-top: 2rem;
    margin-bottom: 0.8rem;
}

h3 {
    font-size: 1.2rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.hero-figure {
    margin: 0 0 2rem;
    background-color: var(--content-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
    background-color: var(--content-bg-soft);
}

.hero-caption {
    margin: 0;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    color: var(--hero-caption-color);
    text-align: right;
    font-style: italic;
    background-color: var(--content-bg);
    border-top: 1px solid var(--border-color);
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-top: 2rem;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.75rem 1.35rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 700;
    border: 1px solid transparent;
    transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--accent-contrast);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: var(--accent-contrast);
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--content-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--content-bg-soft);
    border-color: var(--accent-color);
    color: var(--text-color);
    text-decoration: none;
    transform: translateY(-1px);
}

.info-box {
    margin-bottom: 1.75rem;
    padding: 1.25rem;
    background-color: var(--content-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.content-list {
    padding-left: 1.25rem;
}

.content-list li {
    margin-bottom: 0.5rem;
}

body.menu-open {
    overflow: hidden;
}

@media (min-width: 769px) {
    .menu-button {
        display: none;
    }

    .theme-toggle--mobile {
        display: none;
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
    }

    .site-navigation {
        width: 100%;
        margin-left: 0;
        display: none;
        padding-top: 0.75rem;
        border-top: 1px solid var(--nav-border);
    }

    .site-navigation.is-open {
        display: block;
    }

    .main-nav {
        flex-direction: column;
        align-items: stretch;
        gap: 0.4rem;
    }

    .nav-item > a {
        width: 100%;
        justify-content: flex-start;
    }

    .submenu {
        position: static;
        display: block;
        min-width: 0;
        margin-top: 0.35rem;
        padding: 0.35rem 0 0.2rem 1rem;
        border: 0;
        border-left: 2px solid var(--border-color);
        border-radius: 0;
        box-shadow: none;
        background: transparent;
    }

    .submenu li a {
        padding: 0.6rem 0.75rem;
        border-radius: var(--radius-sm);
    }

    .mobile-menu-tools {
        display: block;
        margin-top: 0.9rem;
    }

    .theme-toggle--desktop {
        display: none;
    }

    main {
        margin: 0 auto;
        padding: 2rem 1rem 3rem;
    }

    h1 {
        font-size: clamp(1.85rem, 8vw, 2.5rem);
    }

    .button-group {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}