/**
 * V-ZUG Berechnungs-Konfiguration Startseite
 * Design-System basierend auf V-ZUG Corporate Identity
 */

/* ============================================
   CSS Variables - V-ZUG Design Tokens
   ============================================ */
:root {
    /* Primärfarben - Dunkel */
    --color-dark-anthracite: #1d2025;
    --color-dark-blue: #143452;
    --color-deep-blue: #003764;
    
    /* Primärfarben - Hell */
    --color-cream-white: #fefbf4;
    --color-warm-beige: #fdebda;
    --color-light-beige-gray: #f2efe8;
    --color-neutral-gray-beige: #e5e0da;
    
    /* Warme Grautöne */
    --color-warm-gray: #a2958e;
    --color-dark-warm-gray: #7e6f67;
    --color-light-warm-gray: #c4bab4;
    
    /* Neutrale Grautöne */
    --color-neutral-gray: #707379;
    --color-blue-gray: #4f667e;
    
    /* Typografie */
    --font-family: 'Suisse-Intl', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.8rem;
    --spacing-sm: 1.2rem;
    --spacing-md: 1.6rem;
    --spacing-lg: 2.4rem;
    --spacing-xl: 4.8rem;
    --spacing-xxl: 7.2rem;
    --spacing-xxxl: 9.6rem;
    
    /* Border Radius */
    --radius-button: 9999px;
    --radius-card: 12px;
    
    /* Transitions */
    --transition-fast: 0.15s linear;
    --transition-normal: 0.2s ease-in-out;
    --transition-slow: 0.3s ease-in-out;
    
    /* Container */
    --container-max-width: 1366px;
    --container-padding-mobile: 1.2rem;
    --container-padding-tablet: 4.8rem;
    --container-padding-desktop: 8.8rem;
    --container-padding-xl: 11.4rem;
    
    /* Grid */
    --grid-gap: 12px;
    --grid-gap-lg: 16px;
}

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

html {
    font-size: 62.5%; /* 1rem = 10px */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: 1.6rem;
    line-height: 1.625;
    font-weight: var(--font-weight-light);
    color: var(--color-dark-anthracite);
    background-color: var(--color-cream-white);
    overflow-x: clip;
}

/* ============================================
   Container
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding-left: var(--container-padding-mobile);
    padding-right: var(--container-padding-mobile);
}

@media (min-width: 720px) {
    .container {
        padding-left: var(--container-padding-tablet);
        padding-right: var(--container-padding-tablet);
    }
}

@media (min-width: 1367px) {
    .container {
        padding-left: var(--container-padding-desktop);
        padding-right: var(--container-padding-desktop);
    }
}

@media (min-width: 1680px) {
    .container {
        padding-left: var(--container-padding-xl);
        padding-right: var(--container-padding-xl);
    }
}

/* ============================================
   App Container
   ============================================ */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header
   ============================================ */
.app-header {
    background-color: var(--color-dark-anthracite);
    border-bottom: 1px solid var(--color-neutral-gray-beige);
    padding: var(--spacing-xl) 0;
}

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

.logo {
    margin-bottom: var(--spacing-md);
}

.vzug-logo {
    height: 40px;
    width: auto;
    display: block;
    margin: 0 auto;
}

.vzug-logo-fallback {
    height: 40px;
    width: auto;
    display: block;
    margin: 0 auto;
}

.page-title {
    font-size: 2.4rem;
    font-weight: var(--font-weight-medium);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-cream-white);
}

.page-description {
    font-size: 1.6rem;
    color: var(--color-light-warm-gray);
    font-weight: var(--font-weight-light);
    line-height: 1.6;
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 1025px) {
    .page-title {
        font-size: 3.2rem;
    }
    
    .page-description {
        font-size: 1.8rem;
    }
}

/* ============================================
   Main Content
   ============================================ */
.app-main {
    flex: 1;
    padding: var(--spacing-xxl) 0;
}

@media (min-width: 1025px) {
    .app-main {
        padding: var(--spacing-xxxl) 0;
    }
}

/* ============================================
   Apps Grid
   ============================================ */
.apps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 720px) {
    .apps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
}

/* ============================================
   App Card
   ============================================ */
.app-card {
    display: block;
    text-decoration: none;
    color: inherit;
    background-color: var(--color-cream-white);
    border: 2px solid var(--color-neutral-gray-beige);
    border-radius: var(--radius-card);
    box-shadow: 0 2px 8px rgba(29, 32, 37, 0.1);
    transition: var(--transition-normal);
    cursor: pointer;
    position: relative;
}

.app-card:hover {
    border-color: var(--color-dark-anthracite);
    background-color: var(--color-light-beige-gray);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(29, 32, 37, 0.2);
}

.app-card:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(29, 32, 37, 0.15);
    transition: var(--transition-fast);
}

.app-card:focus-visible {
    outline: 2px solid var(--color-neutral-gray);
    outline-offset: 4px;
}

.app-card-content {
    padding: var(--spacing-xl);
}

.app-card-title {
    font-size: 2rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark-anthracite);
    line-height: 1.3;
}

.app-card-description {
    font-size: 1.6rem;
    color: var(--color-neutral-gray);
    font-weight: var(--font-weight-light);
    line-height: 1.6;
}

@media (min-width: 1025px) {
    .app-card-content {
        padding: var(--spacing-xxl);
    }
    
    .app-card-title {
        font-size: 2.4rem;
    }
    
    .app-card-description {
        font-size: 1.8rem;
    }
}

/* ============================================
   Footer
   ============================================ */
.app-footer {
    background-color: var(--color-dark-anthracite);
    color: var(--color-cream-white);
    padding: var(--spacing-lg) 0;
    margin-top: auto;
}

.footer-text {
    text-align: center;
    font-size: 1.2rem;
    color: var(--color-light-warm-gray);
}

.footer-link {
    color: var(--color-cream-white);
    text-decoration: none;
    transition: var(--transition-normal);
}

.footer-link:hover {
    color: var(--color-light-warm-gray);
    text-decoration: underline;
}

.footer-link:focus-visible {
    outline: 2px solid var(--color-cream-white);
    outline-offset: 2px;
}

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

/* Focus visible für bessere Accessibility */
*:focus-visible {
    outline: 2px solid var(--color-neutral-gray);
    outline-offset: 4px;
}