/* ===================================================================
   Walter Amos Stiftung - Main Stylesheet
   Vereinheitlichte CSS-Datei basierend auf den Grafiker-Vorlagen
   =================================================================== */

/* CSS Variables / Custom Properties */
:root {
    /* Colors */
    --color-primary: #027934;
    --color-primary-dark: #0c572b;
    --color-secondary: #007938;
    --color-accent: #e54e4e;
    --color-text-primary: #000000;
    --color-text-secondary: #444444;
    --color-text-light: #707070;
    --color-background: #ffffff;
    --color-green-light: #02793470;

    /* Typography */
    --font-family-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    --font-size-small: 16px;
    --font-size-medium: 18px;
    --font-size-large: 20px;
    --font-size-xl: 24px;
    --font-size-xxl: 30px;
    --font-size-hero: 36px;

    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.4;
    --line-height-loose: 1.6;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;

    /* Layout */
    --max-width-content: 1100px;
    --max-width-text: 700px;
    --header-height: 100px;
    --footer-height: 120px;
    --content-indent: 2rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-medium);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-family-primary);
    font-weight: 700;
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

h1 {
    font-size: var(--font-size-hero);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: var(--font-size-xxl);
}

h3 {
    font-size: var(--font-size-xl);
}

h4 {
    font-size: var(--font-size-large);
    font-weight: 500;
}

p {
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-loose);
}

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

a:hover {
    color: var(--color-primary-dark);
}

/* Layout Components */
.container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.container--narrow {
    max-width: var(--max-width-text);
}

.content-section {
    margin-left: var(--content-indent);
    margin-right: var(--content-indent);
}

.section + .section {
    padding-top: var(--spacing-xl);
}

.content + .content {
    margin-top: var(--spacing-xxl);
}

.section--large {
    padding: var(--spacing-xxl) 0;
}

/* Header */
.header {
    position: relative;
    height: var(--header-height);
    background-color: var(--color-background);
    border-bottom: 1px solid #f0f0f0;
    padding: var(--spacing-md) 0;
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.header__logo {
    display: flex;
    align-items: center;
    font-size: 0; /* Hide alt text */
}

.header__logo img,
.header__logo svg {
    height: 60px;
    width: auto;
}

/* Navigation */
.nav {
    display: flex;
}

.nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav__item {
    margin-left: var(--spacing-lg);
    list-style: none;
}

.nav__link {
    font-size: var(--font-size-medium);
    font-weight: 400;
    color: var(--color-primary);
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav__link--active {
    font-weight: 500;
    color: var(--color-primary-dark);
}

.nav__link--active::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-primary);
}

/* Main Content */
.main {
    min-height: calc(100vh - var(--header-height) - var(--footer-height));
}

.hero {
    text-align: center;
    margin-bottom: 1em;
    margin-top: 1em;
}

.hero__inner {
    background: #f8f9fa;
    padding: var(--spacing-xl);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.hero__title {
    font-size: var(--font-size-hero);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 0;
}

/* Hero Variante für Startseite mit grünem Hintergrund */
.hero--home .hero__inner {
    background: var(--color-primary);
}

.hero--home .hero__title {
    color: var(--color-background);
}

.hero--home .hero__subtitle {
    color: var(--color-background);
}

/* Content Sections */
.content {
    padding: var(--spacing-xl) 0;
}

.content__title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.content__text {
    font-size: var(--font-size-medium);
    line-height: var(--line-height-loose);
    color: var(--color-text-primary);
}

.content__text--large {
    font-size: var(--font-size-large);
}

.content-section p {
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-loose);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    font-family: var(--font-family-primary);
    font-size: var(--font-size-medium);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: 0 8px 0 8px;
    cursor: pointer;
    transition: all var(--transition-normal);
    line-height: 1.3;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.btn--primary {
    background-color: var(--color-primary);
    color: var(--color-background);
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-background);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-background);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

/* Cards/Projects */
.card {
    background-color: var(--color-background);
    border-radius: 0 12px 0 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.card__image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter var(--transition-normal);
}

.card:hover .card__image {
    filter: grayscale(0%);
}

.card__content {
    padding: var(--spacing-md);
}

.card__title {
    font-size: var(--font-size-large);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.card__text {
    font-size: var(--font-size-medium);
    color: var(--color-text-secondary);
    line-height: var(--line-height-loose);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-xl);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Footer */
.footer {
    background-color: #f8f9fa;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xxl);
    border-top: 1px solid #e9ecef;
}

.footer__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.footer__nav {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer__nav-item {
    margin-right: var(--spacing-lg);
}

.footer__nav-link {
    font-size: var(--font-size-large);
    color: var(--color-text-primary);
    font-weight: 400;
}

.footer__nav-link:hover {
    color: var(--color-primary);
}

.footer__copyright {
    font-size: var(--font-size-medium);
    color: var(--color-text-secondary);
    font-weight: 300;
}

/* Utilities */
.text-center {
    text-align: center;
}

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

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

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

.mt-0 {
    margin-top: 0;
}
.mt-sm {
    margin-top: var(--spacing-sm);
}
.mt-md {
    margin-top: var(--spacing-md);
}
.mt-lg {
    margin-top: var(--spacing-lg);
}
.mt-xl {
    margin-top: var(--spacing-xl);
}

.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1001;
}

.mobile-menu-toggle__line {
    display: block;
    width: 24px;
    height: 3px;
    background-color: var(--color-primary);
    margin: 3px 0;
    transition: all var(--transition-fast);
    border-radius: 2px;
}

.mobile-menu-toggle--active .mobile-menu-toggle__line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle--active .mobile-menu-toggle__line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle--active .mobile-menu-toggle__line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Responsive Design - Mobile First */
/* Mobile Navigation Styles werden unten bei @media definiert */

/* Tablets */
@media (max-width: 768px) {
    :root {
        --font-size-hero: 32px;
        --font-size-xxl: 28px;
        --font-size-xl: 24px;
        --spacing-xl: 32px;
        --spacing-xxl: 48px;
    }

    .header__container {
        flex-wrap: wrap;
        position: relative;
    }

    .nav ul {
        display: none;
    }

    .nav--mobile-open ul {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-background);
        border-top: 1px solid #e9ecef;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        padding: var(--spacing-md);
        list-style: none;
        margin: 0;
    }

    .nav--mobile-open .nav__item {
        margin: 0 0 var(--spacing-sm) 0;
        list-style: none;
    }

    .nav--mobile-open .nav__link {
        display: block;
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: 6px;
        transition: background-color var(--transition-fast);
        color: var(--color-primary);
        text-decoration: none;
        font-size: var(--font-size-large);
        font-weight: 500;
    }

    .nav--mobile-open .nav__link:hover {
        background-color: #f8f9fa;
    }

    .nav--mobile-open .nav__link--active {
        background-color: var(--color-primary);
        color: white;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .grid--2.grid--tablet-2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__container {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }

    .footer__nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --font-size-hero: 28px;
        --font-size-xxl: 24px;
        --font-size-xl: 22px;
        --spacing-md: 16px;
        --spacing-lg: 24px;
        --spacing-xl: 24px;
        --spacing-xxl: 32px;
        --content-indent: 0;
        --max-width-content: 100%;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .content-section {
        margin-left: 0;
        margin-right: 0;
    }

    .hero__title {
        font-size: var(--font-size-hero);
    }

    .hero__subtitle {
        font-size: var(--font-size-large);
    }

    .footer__nav {
        flex-direction: column;
    }

    .footer__nav-item {
        margin-right: 0;
        margin-bottom: var(--spacing-sm);
    }
}

/* Large Screens */
@media (min-width: 1400px) {
    :root {
        --max-width-content: 1200px;
        --font-size-hero: 42px;
        --spacing-xxl: 80px;
        --content-indent: 2rem;
    }

    /* Section Icons */
    .section-icon {
        transition: all 0.3s ease;
        filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    }

    .section-icon:hover {
        transform: translateY(-2px);
        filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
    }

    .card .section-icon {
        opacity: 0.8;
    }

    .card:hover .section-icon {
        opacity: 1;
        transform: scale(1.05);
    }

    .hero > .container .section-icon {
        opacity: 0.6;
    }

    /* Icon spacing on cards */
    .card__content > div:first-child {
        margin-bottom: 2rem;
    }

    /* Icon spacing on hero sections */
    .hero .section-icon {
        margin-bottom: 2.5rem;
    }

    .container {
        padding: 0 var(--spacing-xxl);
    }
}


/* Print Styles */
@media print {
    .header,
    .footer,
    .nav,
    .btn,
    .mobile-menu-toggle {
        display: none;
    }

    .main {
        min-height: auto;
    }

    body {
        font-size: 12pt;
        line-height: 1.4;
        color: black;
        background: white;
    }

    a {
        color: black;
        text-decoration: underline;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    animation: fadeIn var(--transition-slow) ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.slide-up {
    transform: translateY(30px);
    opacity: 0;
    animation: slideUp var(--transition-slow) ease forwards;
}

@keyframes slideUp {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Focus Styles für Accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Kontakt-Seite spezifische Styles */
.contact-box {
    background-color: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.contact-box h3 {
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.contact-box p {
    margin-bottom: 0.5rem;
}

.contact-highlight {
    background-color: var(--color-green-light);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--color-primary);
}

.contact-highlight h3 {
    margin-bottom: 1rem;
    color: var(--color-primary-dark);
}

.warning-box {
    background-color: #fff3cd;
    border: 1px solid #ffeaa7;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.warning-box h3 {
    color: #856404;
    margin-bottom: 1rem;
}

.warning-box p {
    color: #856404;
}

.grid--large-gap {
    gap: 4rem;
}

/* Projekt-Detail spezifische Styles */
.project-header {
    padding: 3rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 12px;
    margin-bottom: 3rem;
}

.badge {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
}

.badge--category {
    background-color: var(--color-green-light);
    color: var(--color-primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge--status {
    color: white;
}

.badge--status-active {
    background-color: #28a745;
}

.badge--status-completed {
    background-color: #6c757d;
}

.badge--featured {
    background-color: var(--color-accent);
    color: white;
}

.badge-group {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.hero--error .hero__title {
    color: var(--color-accent);
}

.btn--back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* High Contrast Support */
@media (prefers-contrast: high) {
    :root {
        --color-text-secondary: #000000;
        --color-text-light: #333333;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}