/**
 * Eltern-Initiative-73 Stylesheet
 * Responsive MVC-Light Design - Modernisiert
 */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
    /* Farben */
    --color-primary: #669966;
    --color-primary-dark: #557755;
    --color-primary-light: #7aad7a;
    --color-orange: #ff9900;
    --color-orange-dark: #e68a00;
    --color-pink: #DF307F;
    --color-pink-dark: #c42a6f;
    --color-red: #990100;
    --color-red-dark: #7a0100;
    --color-green: #669900;
    --color-green-dark: #557a00;
    --color-white: #ffffff;
    --color-light: #f5f5f5;
    --color-gray: #e0e0e0;
    --color-dark: #333333;
    
    /* Abstände */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Typografie */
    --font-family: 'Nunito', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-size-base: 16px;
    --line-height: 1.6;
    
    /* Layout */
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --box-size: 12rem;
    
    /* Effekte */
    --transition-fast: 0.15s ease;
    --transition: 0.25s ease;
    --transition-slow: 0.4s ease;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);
    --shadow-inset: inset 0 2px 4px rgba(0,0,0,0.1);
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

h1, h2, h3 {
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
    font-weight: 700;
}

h1 {
    font-size: 1.75rem;
    position: relative;
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

/* Dezente Unterstreichung bei H1 */
h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 3rem;
    height: 3px;
    background: var(--color-orange);
    border-radius: 2px;
}

p {
    margin: 0 0 var(--spacing-sm) 0;
}

/* ========================================
   Layout Container
   ======================================== */
.site-wrapper {
    max-width: 1100px;
    margin: 0 auto;
    padding: var(--spacing-sm);
}

.main-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--color-white);
}

/* ========================================
   Sidebar (Logo + Navigation)
   ======================================== */
.sidebar {
    width: var(--box-size);
    background: var(--color-primary);
    display: flex;
    flex-direction: column;
}

/* ========================================
   Sidebar Highlight (TV-Beitrag etc.)
   ======================================== */
.sidebar-highlight {
    margin-top: auto;
    padding: var(--spacing-sm);
    background: rgba(0,0,0,0.2);
    text-align: center;
}

.sidebar-highlight-badge {
    display: inline-block;
    background: var(--color-orange);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-xs);
}

.sidebar-highlight-link {
    display: block;
    color: var(--color-white);
    font-weight: 600;
    font-size: 0.9rem;
    line-height: 1.4;
    transition: color var(--transition-fast);
}

.sidebar-highlight-link:hover {
    color: var(--color-orange);
}

.sidebar-highlight-link small {
    font-weight: 400;
    opacity: 0.8;
}

/* Logo */
.logo {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-md);
    min-height: var(--box-size);
    border-bottom: 2px solid rgba(255,255,255,0.2);
    text-decoration: none;
    color: var(--color-white);
    transition: background-color var(--transition);
    position: relative;
    overflow: hidden;
}

.logo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.05) 100%);
    opacity: 0;
    transition: opacity var(--transition);
}

.logo:hover::before {
    opacity: 1;
}

.logo:hover {
    background-color: var(--color-primary-dark);
}

.logo-inner {
    position: relative;
    z-index: 1;
}

.logo-title {
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.logo-title span {
    color: var(--color-orange);
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.logo-contact {
    margin-top: var(--spacing-sm);
    font-size: 0.75rem;
    line-height: 1.5;
    opacity: 0.9;
}

.logo-phone {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
}

.logo-address {
    display: block;
    opacity: 0.85;
}

/* Navigation */
.nav-groups {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.nav-group {
    border-bottom: 2px solid rgba(255,255,255,0.15);
    padding: var(--spacing-xs) 0;
}

.nav-group:last-child {
    border-bottom: none;
}

.nav-group--pink {
    background: linear-gradient(180deg, var(--color-pink) 0%, var(--color-pink-dark) 100%);
}

.nav-group--red {
    background: linear-gradient(180deg, var(--color-red) 0%, var(--color-red-dark) 100%);
}

.nav-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-white);
    transition: all var(--transition-fast);
    position: relative;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background-color: rgba(255,255,255,0.15);
    padding-left: calc(var(--spacing-sm) + 4px);
}

.nav-link--active {
    background-color: rgba(255,255,255,0.2);
    border-left-color: var(--color-orange);
}

.nav-link--active::before {
    content: '›';
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    font-weight: bold;
    opacity: 0.7;
}

/* ========================================
   Main Content Area
   ======================================== */
.main-content {
    background: linear-gradient(180deg, var(--color-green) 0%, var(--color-green-dark) 100%);
    min-height: calc(3 * var(--box-size));
}

/* Photo Grid */
.photo-grid,
.content-header {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.photo-item {
    position: relative;
    overflow: hidden;
    display: block;
    aspect-ratio: 1;
    border-left: 2px solid var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
}

.photo-item:nth-child(3n+1) {
    border-left: none;
}

.photo-grid .photo-item:nth-last-child(-n+3) {
    border-bottom: none;
}

.content-header .photo-item {
    border-bottom: none;
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.photo-item:hover img {
    transform: scale(1.08);
}

.photo-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
    pointer-events: none;
}

.photo-item:hover .photo-overlay {
    background: rgba(0,0,0,0.3);
}

.photo-zoom {
    font-size: 2rem;
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--transition);
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.photo-item:hover .photo-zoom {
    opacity: 1;
    transform: scale(1);
}

/* Content Body */
.content-body {
    padding: var(--spacing-lg);
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-white);
}

.content-body p {
    margin-bottom: var(--spacing-md);
}

.content-body strong,
.content-body b {
    font-weight: 700;
    color: var(--color-white);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    text-align: center;
    padding: var(--spacing-md) var(--spacing-sm);
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
}

.site-footer p {
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.footer-divider {
    opacity: 0.5;
}

.footer-copyright {
    opacity: 0.7;
}

/* ========================================
   Mobile Navigation Toggle (Hamburger)
   ======================================== */
.nav-toggle {
    display: none;
    align-items: center;
    justify-content: space-between;
    background: var(--color-orange);
    border: none;
    padding: var(--spacing-sm);
    color: var(--color-white);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    width: 100%;
    transition: background var(--transition-fast);
}

.nav-toggle:hover {
    background: var(--color-orange-dark);
}

.nav-toggle-icon {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 20px;
}

.nav-toggle-icon span {
    display: block;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: all var(--transition-fast);
}

.nav-toggle.is-open .nav-toggle-icon span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.nav-toggle.is-open .nav-toggle-icon span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-open .nav-toggle-icon span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   Lightbox
   ======================================== */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 1000;
    padding: var(--spacing-lg);
}

.lightbox.is-open {
    opacity: 1;
    visibility: visible;
}

.lightbox-img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: transform var(--transition);
}

.lightbox.is-open .lightbox-img {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: rgba(255,255,255,0.1);
    border: none;
    color: white;
    font-size: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.lightbox-close:hover {
    background: rgba(255,255,255,0.2);
    transform: rotate(90deg);
}

/* ========================================
   Error Page
   ======================================== */
.error-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(3 * var(--box-size));
    text-align: center;
    padding: var(--spacing-xl);
}

.error-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: bounce 2s ease infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.error-page h1 {
    font-size: 1.5rem;
}

.error-page h1::after {
    left: 50%;
    transform: translateX(-50%);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.btn--primary:hover {
    background: var(--color-orange-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ========================================
   Responsive: Tablet
   ======================================== */
@media screen and (max-width: 900px) {
    :root {
        --box-size: 10rem;
    }
    
    .content-body {
        padding: var(--spacing-md);
    }
    
    h1 {
        font-size: 1.5rem;
    }
}

/* ========================================
   Responsive: Mobile
   ======================================== */
@media screen and (max-width: 650px) {
    :root {
        --box-size: 8rem;
    }
    
    .main-grid {
        grid-template-columns: 1fr;
        border-radius: var(--border-radius-sm);
    }
    
    .sidebar {
        width: 100%;
        position: sticky;
        top: 0;
        z-index: 100;
    }
    
    .logo {
        min-height: auto;
        padding: var(--spacing-sm) var(--spacing-md);
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .logo-contact {
        margin-top: 0;
    }
    
    .logo-phone {
        margin-bottom: 0;
    }
    
    .logo-address {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-groups {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-primary);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-groups.is-open {
        display: block;
    }
    
    .nav-group {
        display: flex;
        flex-wrap: wrap;
    }
    
    .nav-link {
        flex: 1 1 50%;
        text-align: center;
        border-left: none;
        padding: var(--spacing-sm);
    }
    
    .nav-link:hover {
        padding-left: var(--spacing-sm);
    }
    
    .nav-link--active::before {
        display: none;
    }
    
    .photo-grid,
    .content-header {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .photo-item:nth-child(3n+1) {
        border-left: 2px solid var(--color-primary);
    }
    
    .photo-item:nth-child(2n+1) {
        border-left: none;
    }
    
    .content-header .photo-item:last-child {
        display: none;
    }
    
    .content-body {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    h1 {
        font-size: 1.35rem;
    }
}

/* ========================================
   Responsive: Small Mobile
   ======================================== */
@media screen and (max-width: 400px) {
    .nav-link {
        flex: 1 1 100%;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .sidebar,
    .lightbox,
    .site-footer {
        display: none;
    }
    
    .main-grid {
        display: block;
    }
    
    .main-content {
        background: white;
        color: black;
    }
    
    .content-body {
        padding: 0;
    }
}