/* =============================================
   MEDIENGESTALTER 3D - REDESIGN
   Swiss Design Grid with CSS Animations (No JS)
   ============================================= */

/* SPDX-License-Identifier: GPL */
/* SPDX-AIModel: Qwen/Qwen3.5-35B-A3B (local) */
/* SPDX-AIGenerationDate: 2026-03-16 */
/* SPDX-AIModifications: Pure CSS animations - no JavaScript required */

/* CSS Custom Properties */
:root {
    /* Core Color Palette */
    --primary-dark: #2A3547;
    --accent-blue: #3A86FF;
    --accent-green: #00FF9D;
    --bg-light: #F8F9FA;
    --text-dark: #212529;
    
    /* Secondary Text Colors */
    --text-muted: #555555;
    --text-subtle: #666666;
    
    /* Utility Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    
    /* Extended Palette */
    --accent-green-hover: #00D985;
    --accent-blue-muted: rgba(58, 134, 255, 0.08);
    --accent-blue-subtle: rgba(58, 134, 255, 0.15);
    --border-dark: #1a2029;
    
    /* Typography */
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    
    /* Spacing Scale */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    
    /* Animation Easing */
    --ease-out-quart: cubic-bezier(0.165, 0.84, 0.44, 1);
    --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
}

/* =============================================
   RESET & BASE STYLES
   ============================================= */

/* Skip Link for Keyboard Navigation */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-dark);
    color: var(--color-white);
    padding: 1rem 2rem;
    text-decoration: none;
    font-weight: 600;
    z-index: 10000;
    border-radius: 0 0 8px 8px;
    transition: top 0.2s var(--ease-out-quart);
}

.skip-link:focus {
    top: 0;
    outline: 3px solid var(--accent-green);
    outline-offset: 2px;
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* =============================================
   HEADER SECTION
   ============================================= */

header {
    background-color: var(--primary-dark);
    padding: var(--space-xl) var(--space-md);
    position: relative;
    overflow: hidden;
}

/* Geometric pattern background */
header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(90deg, var(--accent-blue-muted) 1px, transparent 1px),
        linear-gradient(var(--accent-blue-muted) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.08;
    pointer-events: none;
}

/* Bottom accent line */
header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-green) 0%, var(--accent-blue) 100%);
    transform: scaleX(0);
    transform-origin: left;
    animation: headerLineExpand 1s var(--ease-out-expo) 0.3s forwards;
}

@keyframes headerLineExpand {
    to { transform: scaleX(1); }
}

header h1 {
    font-size: clamp(1.8rem, 5vw, 3.2rem);
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: -0.025em;
    text-transform: uppercase;
    line-height: 1.1;
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto var(--space-sm);
    overflow-wrap: break-word;
    word-break: break-word;
    
    /* Entrance animation */
    opacity: 0;
    transform: translateY(30px);
    animation: headerFadeIn 0.8s var(--ease-out-expo) 0.2s forwards;
}

header .subtitle {
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    font-weight: 400;
    color: var(--accent-blue);
    letter-spacing: 0.04em;
    position: relative;
    z-index: 1;
    
    /* Entrance animation */
    opacity: 0;
    transform: translateY(20px);
    animation: headerFadeIn 0.8s var(--ease-out-expo) 0.5s forwards;
}

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

/* =============================================
   MAIN CONTAINER
   ============================================= */

main {
    width: 95%;
    max-width: 1200px;
    margin: var(--space-lg) auto;
    padding: 0 var(--space-sm);
}

/* =============================================
   FLEXBOX LAYOUT - 50/2/50 Structure
   ============================================= */

.flex-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 4%;
    align-items: flex-start;
}

/* =============================================
   SECTION BASE STYLES
   ============================================= */

.flex-tasks-head,
.flex-tasks-list,
.flex-relevant-head,
.flex-relevant-content,
.flex-cta-head,
.flex-cta-content {
    position: relative;
    padding: var(--space-md);
    flex: 0 0 100%;
    max-width: 100%;
    min-width: 0;
    overflow: hidden;
}

/* =============================================
   3px TOP BORDERS
   ============================================= */

.flex-tasks-head,
.flex-relevant-head,
.flex-cta-head {
    border-top: 3px solid var(--primary-dark);
}

/* =============================================
   SECTION NUMBERING
   ============================================= */

.section-number {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-blue);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xs);
}

/* =============================================
   TASKS HEADING SECTION (Left Column)
   ============================================= */

.flex-tasks-head {
    padding-left: 0;
    padding-right: 0;
    padding-top: var(--space-md);
}

.flex-tasks-head h3 {
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.015em;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
    overflow-wrap: break-word;
    word-break: break-word;
}

/* =============================================
   TASKS LIST SECTION (Right Column)
   ============================================= */

.flex-tasks-list {
    padding-left: 0;
    padding-right: 0;
}

.flex-tasks-list ul {
    list-style: none;
    padding: 0;
}

.flex-tasks-list li {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    margin-bottom: var(--space-sm);
    padding-left: var(--space-md);
    position: relative;
    line-height: 1.6;
}

.flex-tasks-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: 700;
    transition: transform 0.2s var(--ease-out-quart);
}

.flex-tasks-list li:hover::before {
    transform: translateX(4px);
    color: var(--accent-green);
}

.flex-tasks-list li strong {
    color: var(--primary-dark);
    font-weight: 600;
}

.flex-tasks-list li .highlight {
    color: var(--accent-blue);
    font-weight: 500;
}

/* =============================================
   RELEVANT SECTION
   ============================================= */

.flex-relevant-head {
    padding-left: 0;
    padding-right: 0;
}

.flex-relevant-head h3 {
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.015em;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
    overflow-wrap: break-word;
    word-break: break-word;
}

.flex-relevant-content {
    padding-top: 0;
}

.flex-relevant-content p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    line-height: 1.8;
    color: var(--text-dark);
}

.flex-relevant-content strong {
    color: var(--primary-dark);
    font-weight: 600;
    background: var(--accent-blue-subtle);
    padding: 0.1em 0.3em;
}

/* =============================================
   CTA SECTION
   ============================================= */

.flex-cta-head {
    padding-left: 0;
    padding-right: 0;
    padding-top: var(--space-lg);
    margin-top: var(--space-lg);
}

.flex-cta-head h3 {
    font-size: clamp(1.3rem, 3vw, 1.7rem);
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.015em;
    line-height: 1.2;
    overflow-wrap: break-word;
    word-break: break-word;
}

.flex-cta-content {
    padding-top: 0;
    padding-left: 0;
    padding-right: 0;
}

.flex-cta-content > p {
    font-size: clamp(1rem, 2vw, 1.15rem);
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

/* =============================================
   KEYWORDS SECTION (Bottom)
   ============================================= */

.flex-keywords {
    padding: var(--space-md);
    padding-top: var(--space-sm);
    margin-top: var(--space-lg);
    border-top: 3px solid var(--primary-dark);
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.8;
    letter-spacing: 0.02em;
    text-align: center;
    flex: 1 1 100%;
}

@media screen and (max-width: 849px) {
    .flex-keywords {
        padding: var(--space-sm);
    }
}

.flex-cta-content strong {
    color: var(--primary-dark);
    font-weight: 700;
}

.flex-cta-content .program-name {
    display: block;
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    font-weight: 700;
    color: var(--accent-blue);
    margin: var(--space-md) 0;
    line-height: 1.3;
}

/* CTA Button */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    font-weight: 700;
    color: var(--primary-dark);
    background-color: var(--accent-green);
    padding: 1rem 2.5rem;
    min-height: 48px;
    border: none;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s var(--ease-out-quart);
}

.cta-button::after {
    content: '→';
    font-size: 1.2em;
    transition: transform 0.3s var(--ease-out-quart);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 8px 25px rgba(0, 255, 157, 0.25),
        0 0 0 3px var(--accent-green-hover);
    background-color: var(--accent-green-hover);
}

.cta-button:hover::after {
    transform: translateX(5px);
}

.cta-button:active {
    transform: translateY(0);
    box-shadow: 
        0 2px 10px rgba(0, 255, 157, 0.2),
        0 0 0 2px var(--accent-green-hover);
    background-color: var(--accent-green-hover);
}

.cta-button:focus-visible {
    outline: 3px solid var(--accent-blue);
    outline-offset: 3px;
}

/* QR Code */
.qr-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    justify-content: flex-start;
}

/* Individual QR Item - Default: single column (mobile) */
.qr-item {
    flex: 1 1 100%;
    max-width: 100%;
    min-width: 0;
    padding: var(--space-sm);
    background: #fff;
    border: 2px solid var(--primary-dark);
    text-align: center;
    overflow: hidden;
}

.qr-item img {
    display: block;
    width: 100%;
    height: auto;
    max-width: 120px;
    margin: 0 auto;
}

.qr-item .qr-url {
    display: block;
    text-align: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-top: var(--space-xs);
    letter-spacing: 0.02em;
    text-decoration: none;
    line-height: 1.3;
    word-break: break-word;
    position: relative;
    transition: color 0.2s var(--ease-out-quart);
}

.qr-item .qr-url:hover {
    color: var(--accent-blue);
}

.qr-item .qr-url:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

.qr-item .qr-label {
    display: block;
    text-align: center;
    font-size: 0.6rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    line-height: 1.3;
}

/* =============================================
   DESKTOP LAYOUT - 2x2 GRID
   ============================================= */

@media screen and (min-width: 850px) {
    main {
        width: 90%;
        margin: var(--space-xl) auto;
    }
    
    .flex-wrapper {
        /* gap: 4% is set on base .flex-wrapper */
    }
    
    /* Tasks Heading - Left Column */
    .flex-tasks-head {
        flex: 0 0 calc(50% - 2%);
        max-width: calc(50% - 2%);
    }
    
    /* Tasks List - Right Column */
    .flex-tasks-list {
        flex: 0 0 calc(50% - 2%);
        max-width: calc(50% - 2%);
    }
    
    /* Relevant Heading - Left Column (new row) */
    .flex-relevant-head {
        flex: 0 0 calc(50% - 2%);
        max-width: calc(50% - 2%);
    }
    
    /* Relevant Content - Right Column (new row) */
    .flex-relevant-content {
        flex: 0 0 calc(50% - 2%);
        max-width: calc(50% - 2%);
        padding-top: var(--space-md);
    }
    
    /* CTA Section - Full Width */
    .flex-cta-head {
        flex: 1 1 100%;
    }
    
    .flex-cta-content {
        flex: 1 1 100%;
        padding-top: 0;
    }
    
    .flex-cta-head h3 {
        margin-bottom: var(--space-md);
    }
    
    /* QR Codes - Full Width */
    .qr-row {
        flex: 1 1 100%;
    }
    
    /* QR Items - Desktop: 5 per row, dynamic expansion */
    .qr-row .qr-item {
        flex: 1 1 calc(20% - var(--space-md) * 4 / 5);
        min-width: 140px;
        max-width: 200px;
        padding: var(--space-sm);
    }
    
    .qr-row .qr-item img {
        max-width: 140px;
    }
    
    .qr-row .qr-item .qr-url {
        font-size: 0.75rem;
    }
    
    .qr-row .qr-item .qr-label {
        font-size: 0.65rem;
    }
    
    /* Keywords - Full Width */
    .flex-keywords {
        flex: 1 1 100%;
    }
}

/* =============================================
   MOBILE LAYOUT - Single Column
   ============================================= */

@media screen and (max-width: 849px) {
    main {
        width: 95%;
        margin: var(--space-md) auto;
    }
    
    .flex-wrapper {
        flex-direction: column;
    }
    
    .flex-tasks-head,
    .flex-tasks-list,
    .flex-relevant-head,
    .flex-relevant-content,
    .flex-cta-head,
    .flex-cta-content,
    .flex-keywords {
        flex: 1 1 100%;
        max-width: 100%;
        padding: var(--space-sm);
    }
    
    .cta-button {
        width: 100%;
        justify-content: center;
    }
    
    /* QR Row - Single column on mobile */
    .qr-row {
        gap: var(--space-sm);
    }
    
    .qr-item {
        flex: 1 1 100%;
        max-width: 100%;
        padding: var(--space-sm);
    }
    
    .qr-item img {
        max-width: 100px;
    }
    
    .qr-item .qr-url {
        font-size: 0.8rem;
    }
    
    .qr-item .qr-label {
        font-size: 0.7rem;
    }
}

/* =============================================
   SMALL MOBILE - Extra conservative spacing
   ============================================= */

@media screen and (max-width: 380px) {
    .flex-wrapper {
        gap: 0.5rem;
    }
    
    main {
        width: 100%;
        padding: 0 0.5rem;
    }
    
    header {
        padding: var(--space-lg) var(--space-xs);
    }
}

/* =============================================
   TABLET LAYOUT - 2-3 QR Codes per row
   ============================================= */

@media screen and (min-width: 600px) and (max-width: 849px) {
    .qr-row {
        gap: var(--space-sm);
    }
    
    .qr-item {
        flex: 1 1 calc(33.333% - var(--space-sm) * 2 / 3);
        max-width: none;
        padding: var(--space-xs);
    }
    
    .qr-item img {
        max-width: 80px;
    }
    
    .qr-item .qr-url {
        font-size: 0.65rem;
    }
    
    .qr-item .qr-label {
        font-size: 0.55rem;
    }
}

/* =============================================
   SIMPLE CSS ANIMATIONS (No JS)
   ============================================= */

/* Fade in animation keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Apply staggered animations to sections */
.flex-tasks-head {
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease-out-quart) 0.3s forwards;
}

.flex-tasks-list {
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease-out-quart) 0.4s forwards;
}

.flex-relevant-head {
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease-out-quart) 0.5s forwards;
}

.flex-relevant-content {
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease-out-quart) 0.6s forwards;
}

.flex-cta-head {
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease-out-quart) 0.8s forwards;
}

.flex-keywords {
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease-out-quart) 1.0s forwards;
}

.flex-cta-content {
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease-out-quart) 0.9s forwards;
}

.qr-row {
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease-out-quart) 1.0s forwards;
}

/* =============================================
   REDUCED MOTION SUPPORT
   ============================================= */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .flex-tasks-head,
    .flex-tasks-list,
    .flex-relevant-head,
    .flex-relevant-content,
    .flex-cta-head,
    .flex-cta-content,
    .qr-row,
    .flex-keywords {
        opacity: 1;
    }
    
    header::after {
        transform: scaleX(1);
    }
    
    header h1,
    header .subtitle {
        opacity: 1;
        transform: none;
    }
}

/* =============================================
   PRINT STYLES
   ============================================= */

@media print {
    body {
        background-color: var(--color-white);
        color: var(--color-black);
    }
    
    header {
        background-color: #f5f5f5 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
        padding: 2rem 1rem;
    }
    
    header::before,
    header::after {
        display: none;
    }
    
    header h1,
    header .subtitle {
        color: var(--color-black) !important;
    }
    
    .flex-tasks-head,
    .flex-relevant-head,
    .flex-cta-head,
    .flex-keywords {
        border-top-color: var(--color-black) !important;
    }
    
    .cta-button {
        background: none !important;
        color: var(--color-black) !important;
        border: 2px solid var(--color-black) !important;
        padding: 0.5rem 1rem;
    }
    
    /* Hide QR codes in print - not useful on paper */
    .qr-row {
        display: none !important;
    }
    
    /* Remove animations */
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* =============================================
   RTL (RIGHT-TO-LEFT) SUPPORT
   ============================================= */

/* Use logical properties for RTL compatibility */
[dir="rtl"] {
    /* Flip text alignment */
    text-align: right;
    
    /* Flip flex directions */
    direction: rtl;
}

/* Logical margin/padding for RTL */
[dir="rtl"] .flex-tasks-list li {
    padding-left: 0;
    padding-right: var(--space-md);
}

[dir="rtl"] .flex-tasks-list li::before {
    left: auto;
    right: 0;
}

[dir="rtl"] .flex-tasks-list li:hover::before {
    transform: translateX(-4px);
}

[dir="rtl"] .cta-button::after {
    transform: scaleX(-1);
}

[dir="rtl"] .cta-button:hover::after {
    transform: scaleX(-1) translateX(5px);
}

/* QR items - ensure proper alignment in RTL */
[dir="rtl"] .qr-row {
    justify-content: flex-end;
}