/* ============================================
   VARIABLES & THEME
   ============================================ */

:root {
    /* Dark Theme (Default) */
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --accent: #e94560;
    --accent-hover: #ff5577;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --text-muted: #6b6b6b;
    --success: #00d9ff;
    --warning: #ffa41b;
    --danger: #ff4757;
    --code-bg: #0d1117;
    --code-border: #30363d;
    --sidebar-width: 280px;
    --header-height: 70px;
    --border-radius: 8px;
    --transition: 0.3s ease;
}

[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9ecef;
    --accent: #0066cc;
    --accent-hover: #0052a3;
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-muted: #6c757d;
    --success: #00a86b;
    --warning: #ff8c00;
    --danger: #dc3545;
    --code-bg: #f6f8fa;
    --code-border: #d0d7de;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition), color var(--transition);
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

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

.header {
    height: var(--header-height);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-bottom: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.header-content h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 400;
}

.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--accent);
    border-radius: 50%;
    width: 45px;
    height: 45px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all var(--transition);
}

.theme-toggle:hover {
    background: var(--accent);
    transform: scale(1.1) rotate(15deg);
}

/* ============================================
   MAIN CONTENT LAYOUT
   ============================================ */

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ============================================
   SIDEBAR NAVIGATION
   ============================================ */

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--bg-tertiary);
    overflow-y: auto;
    padding: 20px 0;
    display: flex;
    flex-direction: column;
}

.nav-section {
    margin-bottom: 20px;
}

.nav-section-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 10px 20px 5px;
    letter-spacing: 1px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
    position: relative;
}

.nav-item:hover {
    background: var(--bg-tertiary);
    border-left-color: var(--accent);
}

.nav-item.active {
    background: var(--bg-tertiary);
    border-left-color: var(--accent);
}

.nav-item.visited::after {
    content: '✓';
    position: absolute;
    right: 15px;
    color: var(--success);
    font-weight: bold;
}

.nav-icon {
    font-size: 20px;
    margin-right: 12px;
    min-width: 25px;
}

.nav-text {
    font-size: 14px;
    font-weight: 500;
}

/* Progress Tracker */
.progress-tracker {
    margin-top: auto;
    padding: 20px;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--accent);
}

.progress-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.progress-bar {
    height: 8px;
    background: var(--bg-primary);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent) 0%, var(--success) 100%);
    width: 0%;
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
}

.reset-progress {
    width: 100%;
    margin-top: 12px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--text-muted);
    border-radius: 4px;
    padding: 8px 10px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.reset-progress:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    background: var(--bg-secondary);
}

/* ============================================
   CONTENT AREA
   ============================================ */

.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 40px;
    background: var(--bg-primary);
}

.loading {
    text-align: center;
    padding: 100px 20px;
    font-size: 18px;
    color: var(--text-secondary);
}

/* Content Typography */
.content-area h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.content-area h2 {
    font-size: 24px;
    font-weight: 600;
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--accent);
    padding-bottom: 8px;
}

.content-area h3 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 25px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.content-area p {
    margin-bottom: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.content-area ul,
.content-area ol {
    margin-bottom: 20px;
    padding-left: 30px;
}

.content-area li {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.content-area strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ============================================
   SPECIAL BOXES
   ============================================ */

.info-box,
.warning-box,
.success-box,
.danger-box {
    padding: 20px;
    border-radius: var(--border-radius);
    margin: 20px 0;
    border-left: 4px solid;
}

.info-box {
    background: rgba(0, 217, 255, 0.1);
    border-left-color: var(--success);
}

.warning-box {
    background: rgba(255, 164, 27, 0.1);
    border-left-color: var(--warning);
}

.success-box {
    background: rgba(0, 217, 255, 0.1);
    border-left-color: var(--success);
}

.danger-box {
    background: rgba(255, 71, 87, 0.1);
    border-left-color: var(--danger);
}

.info-box::before {
    content: '💡 ';
    font-size: 20px;
    margin-right: 10px;
}

.warning-box::before {
    content: '⚠️ ';
    font-size: 20px;
    margin-right: 10px;
}

.success-box::before {
    content: '✅ ';
    font-size: 20px;
    margin-right: 10px;
}

.danger-box::before {
    content: '🚨 ';
    font-size: 20px;
    margin-right: 10px;
}

/* ============================================
   CODE BLOCKS
   ============================================ */

.code-block {
    position: relative;
    margin: 20px 0;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-tertiary);
    padding: 10px 15px;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    border: 1px solid var(--code-border);
    border-bottom: none;
}

.code-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.copy-button {
    background: var(--accent);
    color: var(--text-primary);
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.copy-button:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

.copy-button.copied {
    background: var(--success);
}

pre {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    padding: 20px;
    overflow-x: auto;
    margin: 0;
}

code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
}

/* Inline Code */
p code,
li code {
    background: var(--code-bg);
    padding: 2px 6px;
    border-radius: 3px;
    border: 1px solid var(--code-border);
    font-size: 13px;
}

/* ============================================
   COLLAPSIBLE SECTIONS
   ============================================ */

.collapsible {
    margin: 20px 0;
}

.collapsible-header {
    background: var(--bg-tertiary);
    padding: 15px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--accent);
    transition: all 0.2s ease;
}

.collapsible-header:hover {
    background: var(--accent);
}

.collapsible-title {
    font-size: 16px;
    font-weight: 600;
}

.collapsible-icon {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.collapsible.open .collapsible-icon {
    transform: rotate(180deg);
}

.collapsible-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.collapsible.open .collapsible-content {
    max-height: 5000px;
}

.collapsible-inner {
    padding: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-top: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* ============================================
   TASK SECTIONS
   ============================================ */

.task-section {
    background: var(--bg-secondary);
    border: 2px solid var(--accent);
    border-radius: var(--border-radius);
    padding: 25px;
    margin: 30px 0;
}

.task-section h3 {
    margin-top: 0;
    color: var(--accent);
}

/* ============================================
   DOWNLOAD LINKS
   ============================================ */

.download-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.download-card {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 20px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s ease;
    display: block;
}

.download-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

.download-card-icon {
    font-size: 32px;
    margin-bottom: 10px;
}

.download-card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.download-card-desc {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        max-height: 300px;
    }
    
    .main-content {
        flex-direction: column;
    }
    
    .content-area {
        padding: 20px;
    }
}

/* ============================================
   TOOL CARDS GRID
   ============================================ */

.tool-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 25px 0;
}

.tool-card {
    background: linear-gradient(135deg, var(--accent) 0%, #9b59b6 100%);
    border-radius: var(--border-radius);
    padding: 25px 20px;
    text-align: center;
    color: #fff;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: default;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
}

.tool-card-icon {
    font-size: 36px;
    margin-bottom: 10px;
}

.tool-card-name {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
}

.tool-card-desc {
    font-size: 13px;
    opacity: 0.88;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .tool-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 480px) and (max-width: 768px) {
    .tool-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   CONCEPT BOX
   ============================================ */

.concept-box {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 20px 24px;
    margin: 15px 0;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

.concept-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.concept-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
}

.concept-value {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.concept-value strong {
    color: var(--accent);
}

@media (max-width: 600px) {
    .concept-box {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   HARDWARE PHOTOS
   ============================================ */

.hardware-photo-grid,
.parts-gallery {
    display: grid;
    gap: 18px;
    margin: 20px 0;
}

.hardware-photo-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.parts-gallery {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.hardware-photo,
.part-card {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.hardware-photo img,
.part-card img {
    display: block;
    width: 100%;
}

.hardware-photo img {
    height: auto;
}

.part-card img {
    aspect-ratio: 1 / 1;
    background: var(--bg-tertiary);
    object-fit: contain;
    padding: 12px;
}

.hardware-photo figcaption,
.part-card figcaption {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.5;
    padding: 12px 14px;
}

.part-card figcaption {
    font-weight: 700;
    text-align: center;
}

@media (max-width: 600px) {
    .hardware-photo-grid,
    .parts-gallery {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   DEPENDENCY BOXES
   ============================================ */

.dependency-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.dependency-box {
    background: var(--bg-secondary);
    border: 2px solid var(--accent);
    border-radius: var(--border-radius);
    padding: 20px;
}

.dependency-box h4 {
    color: var(--accent);
    font-size: 15px;
    margin-bottom: 12px;
}

.dependency-box ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.dependency-box li {
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 14px;
    border-bottom: 1px solid var(--bg-tertiary);
}

.dependency-box li:last-child {
    border-bottom: none;
}

.dependency-box li span {
    margin-right: 8px;
}

@media (max-width: 600px) {
    .dependency-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   CHECKLIST
   ============================================ */

.checklist {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.checklist li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin-bottom: 10px;
    border: 1px solid var(--code-border);
    transition: border-color 0.2s ease;
    color: var(--text-secondary);
    font-size: 15px;
}

.checklist li:has(input:checked) {
    border-color: var(--success);
    color: var(--text-primary);
}

.checklist input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--success);
    cursor: pointer;
    flex-shrink: 0;
}

/* ============================================
   TOOL DETAIL SECTION
   ============================================ */

.tool-detail {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 25px;
    margin: 25px 0;
    border-left: 4px solid var(--accent);
}

.tool-detail-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.tool-detail-header .icon {
    font-size: 28px;
}

.tool-detail-header h3 {
    margin: 0;
    font-size: 20px;
    color: var(--text-primary);
}

/* ============================================
   DB VISUAL TABLE (Kapitel 2)
   ============================================ */

.db-visual-table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
    font-size: 13px;
    overflow: hidden;
    border-radius: var(--border-radius);
}

.db-visual-table th {
    background: var(--bg-tertiary);
    color: var(--accent);
    padding: 9px 14px;
    text-align: left;
    border: 1px solid var(--code-border);
    font-weight: 700;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.db-visual-table td {
    padding: 8px 14px;
    border: 1px solid var(--code-border);
    color: var(--text-secondary);
    background: var(--bg-secondary);
}

.db-visual-table tr:nth-child(even) td {
    background: var(--bg-primary);
}

.db-visual-table tr:hover td {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.db-table-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin: 20px 0 6px;
}

/* ============================================
   COMPARISON TABLE (Kapitel 2)
   ============================================ */

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 13px;
}

.comparison-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 14px;
    font-weight: 700;
    border-bottom: 2px solid var(--code-border);
}

.comparison-table th:first-child {
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    width: 180px;
}

.comparison-table th:nth-child(2) {
    color: var(--accent);
    background: rgba(233, 69, 96, 0.06);
}

.comparison-table th:nth-child(3) {
    color: var(--success);
    background: rgba(0, 217, 255, 0.06);
}

.comparison-table td {
    padding: 9px 16px;
    border-bottom: 1px solid var(--bg-tertiary);
    color: var(--text-secondary);
    vertical-align: top;
    line-height: 1.5;
}

.comparison-table td:first-child {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 13px;
}

.comparison-table td:nth-child(2) {
    background: rgba(233, 69, 96, 0.03);
}

.comparison-table td:nth-child(3) {
    background: rgba(0, 217, 255, 0.03);
}

/* ============================================
   VISUAL BOX – structure/diagram display
   ============================================ */

.visual-box {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 18px 20px;
    margin: 14px 0;
    font-family: 'Courier New', Courier, monospace;
    font-size: 13px;
    color: var(--text-secondary);
    overflow-x: auto;
    line-height: 1.8;
    white-space: pre;
}

/* ============================================
   QUIZ (Kapitel 2)
   ============================================ */

.quiz-question {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 20px;
    margin: 16px 0;
}

.quiz-question-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.quiz-options {
    list-style: none;
    padding: 0;
    margin: 0 0 14px;
}

.quiz-options li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background 0.15s;
    margin-bottom: 3px;
}

.quiz-options label {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background 0.15s;
    margin-bottom: 3px;
}

.quiz-options li:hover,
.quiz-options label:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.quiz-options input[type="radio"],
.quiz-options input[type="checkbox"] {
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
}

/* ============================================
   TOOL SECTION (Kapitel 1.2)
   ============================================ */

.tool-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 28px;
    margin: 32px 0;
    border: 1px solid var(--code-border);
}

.tool-section-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--accent);
}

.tool-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    flex-shrink: 0;
}

.tool-section-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    border: none;
    padding: 0;
}

.sub-section {
    margin: 24px 0 0;
}

.sub-section-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Numbered installation steps */
.installation-steps {
    list-style: none;
    padding: 0;
    margin: 0;
}

.installation-step {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 12px 0;
    border-bottom: 1px solid var(--bg-tertiary);
}

.installation-step:last-child {
    border-bottom: none;
}

.step-number {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 2px solid var(--accent);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}

.step-content {
    flex: 1;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

.step-content strong {
    color: var(--text-primary);
}

/* Download meta (size / time) */
.download-meta {
    display: flex;
    gap: 20px;
    margin: 10px 0 0;
    flex-wrap: wrap;
}

.download-meta span {
    font-size: 13px;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 3px 10px;
    border-radius: 20px;
}

/* "Wofür brauchen wir das?" – comes-later box */
.later-info-box {
    background: rgba(155, 89, 182, 0.1);
    border-left: 4px solid #9b59b6;
    border-radius: var(--border-radius);
    padding: 16px 20px;
    margin: 24px 0 0;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

.later-info-box::before {
    content: '⏳ ';
    font-size: 16px;
}

.later-info-box strong {
    color: var(--text-primary);
}

/* Mini checklist per tool */
.tool-checklist {
    list-style: none;
    padding: 14px 18px;
    margin: 0;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
}

.tool-checklist li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 0;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--bg-secondary);
}

.tool-checklist li:last-child {
    border-bottom: none;
}

.tool-checklist input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--success);
    cursor: pointer;
    flex-shrink: 0;
}

.tool-checklist li:has(input:checked) {
    color: var(--text-primary);
}

/* ============================================
   ANSWER REVEAL (details/summary)
   ============================================ */

.answer-reveal {
    margin-top: 16px;
}

.answer-reveal summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: var(--border-radius);
    border: 1px solid var(--success);
    color: var(--success);
    font-weight: 600;
    font-size: 14px;
    background: rgba(0, 217, 255, 0.07);
    transition: background 0.2s ease;
    user-select: none;
}

.answer-reveal summary::-webkit-details-marker { display: none; }

.answer-reveal summary:hover {
    background: rgba(0, 217, 255, 0.15);
}

.answer-reveal[open] summary {
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    border-bottom-color: transparent;
}

.answer-reveal[open] .success-box {
    margin-top: 0;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

/* ============================================
   KAPITEL 3 – HTTP / WEB BASICS
   ============================================ */

.tech-layers {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.tech-layer {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 20px;
    border: 2px solid var(--code-border);
}

.tech-layer.client { border-color: var(--success); }
.tech-layer.server { border-color: var(--accent); }

.tech-layer-title {
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--code-border);
}

.tech-layer.client .tech-layer-title { color: var(--success); }
.tech-layer.server .tech-layer-title { color: var(--accent); }

.tech-layer-item {
    padding: 8px 10px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    margin-bottom: 6px;
    font-size: 14px;
}

.cycle-steps {
    margin: 20px 0;
}

.cycle-step {
    display: flex;
    gap: 16px;
    margin-bottom: 18px;
    align-items: flex-start;
}

.cycle-step-number {
    background: var(--accent);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
    margin-top: 2px;
}

.cycle-step-content {
    flex: 1;
    padding-top: 4px;
}

.cycle-step-content strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text-primary);
}

@media (max-width: 700px) {
    .tech-layers { grid-template-columns: 1fr; }
}

/* ============================================
   KAPITEL 4.1 – PROMPTS SCHREIBEN
   ============================================ */

.bad-prompt {
    background: rgba(255, 71, 87, 0.07);
    border: 1px solid rgba(255, 71, 87, 0.35);
    border-left: 4px solid var(--danger);
    border-radius: var(--border-radius);
    padding: 14px 18px;
    margin: 10px 0;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    white-space: pre-wrap;
    line-height: 1.55;
}

.good-prompt {
    background: rgba(0, 217, 255, 0.05);
    border: 1px solid rgba(0, 217, 255, 0.25);
    border-left: 4px solid var(--success);
    border-radius: var(--border-radius);
    padding: 14px 18px;
    margin: 10px 0;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    white-space: pre-wrap;
    line-height: 1.55;
}

.prompt-label {
    display: block;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}

.bad-prompt  .prompt-label { color: var(--danger); }
.good-prompt .prompt-label { color: var(--success); }

.token-cost {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 9px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    margin-left: 6px;
    vertical-align: middle;
}

.token-cost.high {
    background: rgba(255, 71, 87, 0.1);
    color: var(--danger);
    border: 1px solid rgba(255, 71, 87, 0.35);
}

.token-cost.low {
    background: rgba(0, 217, 255, 0.08);
    color: var(--success);
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.before-after {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin: 14px 0;
    align-items: start;
}

.before-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--danger);
    margin-bottom: 5px;
}

.after-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--success);
    margin-bottom: 5px;
}

.savings-badge {
    display: inline-block;
    padding: 3px 12px;
    background: rgba(0, 217, 255, 0.08);
    color: var(--success);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    margin-top: 8px;
}

.prompt-type-card {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-left: 4px solid var(--accent);
    border-radius: var(--border-radius);
    padding: 18px 20px;
    margin-bottom: 14px;
}

.prompt-type-title {
    font-weight: 700;
    font-size: 13px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 10px;
}

.rule-list {
    counter-reset: rule-counter;
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.rule-list li {
    counter-increment: rule-counter;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    margin-bottom: 8px;
    border: 1px solid var(--code-border);
    font-size: 15px;
    line-height: 1.5;
}

.rule-list li::before {
    content: counter(rule-counter);
    background: var(--accent);
    color: white;
    min-width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    flex-shrink: 0;
    margin-top: 1px;
}

.token-calculator {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 22px 24px;
    margin: 20px 0;
}

.token-calculator h4 {
    margin-bottom: 18px;
    font-size: 16px;
    color: var(--text-primary);
}

.calc-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.calc-label {
    min-width: 210px;
    font-size: 14px;
    color: var(--text-secondary);
}

.calc-input {
    flex: 1;
    min-width: 100px;
    background: var(--bg-tertiary);
    border: 1px solid var(--code-border);
    border-radius: 4px;
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
}

.calc-input:focus { border-color: var(--accent); }

.calc-result {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: 14px 18px;
    margin-top: 16px;
}

.calc-result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 7px 0;
    border-bottom: 1px solid var(--bg-secondary);
    font-size: 14px;
    color: var(--text-secondary);
}

.calc-result-row:last-child { border-bottom: none; }

.calc-value {
    font-weight: 700;
    color: var(--success);
    font-size: 15px;
}

@media (max-width: 700px) {
    .before-after  { grid-template-columns: 1fr; }
    .calc-row      { flex-direction: column; align-items: flex-start; }
    .calc-label    { min-width: unset; }
}

/* ============================================
   KAPITEL 4.2 – LOGINSEITE DESIGN
   ============================================ */

.planning-worksheet {
    background: var(--bg-secondary);
    border: 2px solid var(--accent);
    border-radius: var(--border-radius);
    padding: 24px 28px;
    margin: 20px 0;
}

.planning-worksheet h4 {
    color: var(--accent);
    font-size: 16px;
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--code-border);
}

.worksheet-group {
    margin-bottom: 18px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--code-border);
}

.worksheet-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.worksheet-group-title {
    font-weight: 700;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.worksheet-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 6px;
}

.worksheet-checkbox {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-size: 13px;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    transition: all 0.15s;
}

.worksheet-checkbox:has(input:checked) {
    background: rgba(0, 217, 255, 0.08);
    border-color: rgba(0, 217, 255, 0.3);
    color: var(--text-primary);
}

.worksheet-checkbox input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--success);
    cursor: pointer;
    flex-shrink: 0;
}

.worksheet-input {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--code-border);
    border-radius: 4px;
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 14px;
    margin-top: 6px;
    transition: border-color 0.2s;
}

.worksheet-input:focus {
    outline: none;
    border-color: var(--accent);
}

.worksheet-input::placeholder { color: var(--text-muted); }

.prompt-writer { margin: 20px 0; }

.prompt-textarea {
    width: 100%;
    min-height: 180px;
    background: var(--bg-secondary);
    border: 2px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 14px 16px;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.2s;
}

.prompt-textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.prompt-textarea::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

.prompt-counter {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 2px;
    font-size: 13px;
    color: var(--text-secondary);
}

.prompt-counter-badge {
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 12px;
}

.prompt-counter-badge.ok   { background: rgba(0, 217, 255, 0.1);  color: var(--success); }
.prompt-counter-badge.warn { background: rgba(255, 164, 27, 0.1); color: var(--warning); }
.prompt-counter-badge.bad  { background: rgba(255, 71, 87, 0.1);  color: var(--danger);  }

.workflow-diagram { margin: 20px 0; }

.workflow-step {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 4px;
}

.workflow-step-num {
    background: var(--accent);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    flex-shrink: 0;
}

.workflow-step-content {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 11px 16px;
    font-size: 14px;
    line-height: 1.5;
}

.workflow-step-content strong {
    display: block;
    margin-bottom: 2px;
    color: var(--accent);
    font-size: 13px;
}

.workflow-arrow {
    text-align: center;
    color: var(--text-muted);
    font-size: 18px;
    margin: 2px 0 2px 16px;
    line-height: 1;
}

.design-inspiration {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin: 20px 0;
}

.inspiration-card {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 16px;
    font-size: 14px;
}

.inspiration-title {
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 10px;
    color: var(--accent);
    border-bottom: 1px solid var(--code-border);
    padding-bottom: 7px;
}

.problem-solution {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-left: 4px solid var(--warning);
    border-radius: var(--border-radius);
    padding: 18px 20px;
    margin-bottom: 14px;
}

.problem-solution-title {
    font-weight: 700;
    font-size: 14px;
    color: var(--warning);
    margin-bottom: 10px;
}

@media (max-width: 800px) {
    .design-inspiration { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .worksheet-row { flex-direction: column; }
    .planning-worksheet { padding: 16px; }
}

/* ============================================
   DATEN-ORDNER BUTTON (Sidebar)
   ============================================ */

.data-dir-section {
    padding: 10px 12px 8px;
    border-top: 1px solid var(--code-border);
}

.print-protocol-btn {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
}

.print-protocol-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.data-dir-hint {
    margin-top: 5px;
    font-size: 10px;
    color: var(--text-muted);
    line-height: 1.4;
}

.save-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--success, #00d9ff);
    color: #000;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s, transform 0.2s;
    pointer-events: none;
    z-index: 9999;
}

.save-indicator.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   KAPITEL 6.1 – RASPBERRY PI SETUP
   ============================================ */

.raspi-diagram {
    display: grid;
    grid-template-columns: minmax(230px, 330px) 1fr;
    gap: 20px;
    align-items: center;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.07), rgba(233, 69, 96, 0.08));
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 22px;
    margin: 24px 0;
}

.raspi-board {
    position: relative;
    min-height: 210px;
    border-radius: 20px;
    background:
        radial-gradient(circle at 28px 28px, rgba(255,255,255,0.22) 0 5px, transparent 6px),
        radial-gradient(circle at calc(100% - 28px) 28px, rgba(255,255,255,0.22) 0 5px, transparent 6px),
        radial-gradient(circle at 28px calc(100% - 28px), rgba(255,255,255,0.22) 0 5px, transparent 6px),
        radial-gradient(circle at calc(100% - 28px) calc(100% - 28px), rgba(255,255,255,0.22) 0 5px, transparent 6px),
        linear-gradient(135deg, #267348, #15452e);
    border: 2px solid rgba(0, 217, 255, 0.35);
    box-shadow: inset 0 0 0 6px rgba(255,255,255,0.03), 0 18px 35px rgba(0,0,0,0.25);
}

.raspi-chip,
.raspi-ram,
.raspi-port,
.raspi-sd {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-weight: 700;
    font-size: 12px;
    line-height: 1.2;
    text-align: center;
}

.raspi-chip {
    width: 82px;
    height: 66px;
    left: 34%;
    top: 70px;
    background: #111827;
    color: #e5e7eb;
    border: 1px solid rgba(255,255,255,0.18);
}

.raspi-ram {
    width: 58px;
    height: 44px;
    left: 18%;
    top: 62px;
    background: #263238;
    color: #c8f7dc;
}

.raspi-gpio {
    position: absolute;
    right: 18px;
    top: 22px;
    width: 34px;
    height: 160px;
    border-radius: 7px;
    background:
        repeating-linear-gradient(to bottom, #f6c453 0 8px, transparent 8px 16px),
        repeating-linear-gradient(to right, transparent 0 13px, #f6c453 13px 21px, transparent 21px 34px);
    border: 1px solid rgba(0,0,0,0.35);
}

.raspi-port {
    background: #cbd5e1;
    color: #0f172a;
    border: 2px solid #94a3b8;
}

.raspi-port.lan {
    width: 58px;
    height: 44px;
    left: 20px;
    bottom: 18px;
}

.raspi-port.usb {
    width: 48px;
    height: 36px;
    left: 92px;
    bottom: 22px;
}

.raspi-port.power {
    width: 62px;
    height: 28px;
    right: 78px;
    bottom: 14px;
}

.raspi-sd {
    width: 46px;
    height: 26px;
    right: 72px;
    top: 20px;
    background: #334155;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
}

.raspi-notes {
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--text-secondary);
}

.raspi-notes strong {
    color: var(--text-primary);
    font-size: 18px;
}

.command-box {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-left: 4px solid var(--success);
    border-radius: var(--border-radius);
    padding: 10px 12px;
    margin: 10px 0;
}

.command-box .command-label {
    width: 100%;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.command-box code {
    display: inline-flex;
    align-items: center;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.09);
    border-radius: 6px;
    padding: 6px 9px;
    color: var(--text-primary);
}

.network-diagram {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 12px;
    align-items: center;
    margin: 22px 0;
}

.network-node {
    min-height: 116px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    text-align: center;
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 16px;
    font-size: 28px;
}

.network-node strong {
    display: block;
    color: var(--text-primary);
    font-size: 14px;
}

.network-node span,
.network-link span {
    color: var(--text-secondary);
    font-size: 12px;
}

.network-node.router {
    border-color: rgba(255, 164, 27, 0.45);
}

.network-node.raspi {
    border-color: rgba(0, 217, 255, 0.45);
}

.network-link {
    color: var(--text-muted);
    font-size: 12px;
    text-align: center;
    min-width: 72px;
}

.network-link::before {
    content: "";
    display: block;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    margin-bottom: 8px;
}

.directory-tree {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-left: 4px solid var(--warning);
    border-radius: var(--border-radius);
    margin: 16px 0;
    overflow-x: auto;
}

.directory-tree pre {
    border: none;
    border-radius: 0;
    background: transparent;
    margin: 0;
    white-space: pre;
}

@media (max-width: 900px) {
    .raspi-diagram,
    .network-diagram {
        grid-template-columns: 1fr;
    }

    .network-link::before {
        width: 2px;
        height: 28px;
        margin: 0 auto 8px;
        background: linear-gradient(180deg, transparent, var(--accent), transparent);
    }
}

@media (max-width: 520px) {
    .raspi-diagram {
        padding: 16px;
    }

    .raspi-board {
        min-height: 185px;
    }

    .raspi-chip {
        left: 32%;
    }
}

/* ============================================
   KAPITEL 6.2 - RASPI MIT SERVER VERBINDEN
   ============================================ */

.thinking-section {
    background: linear-gradient(135deg, rgba(255, 164, 27, 0.08), rgba(0, 217, 255, 0.05));
    border: 1px solid rgba(255, 164, 27, 0.35);
    border-left: 4px solid var(--warning);
    border-radius: var(--border-radius);
    padding: 18px 20px;
    margin: 18px 0;
}

.thinking-section p:last-child {
    margin-bottom: 0;
}

.decision-box {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.decision-option {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 18px 20px;
}

.decision-option.recommended {
    border-color: rgba(0, 217, 255, 0.45);
    box-shadow: 0 0 0 1px rgba(0, 217, 255, 0.12);
}

.decision-option h3 {
    color: var(--accent);
    margin-top: 0;
}

.decision-option.recommended h3 {
    color: var(--success);
}

.decision-option ul {
    margin: 10px 0 0 18px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.checklist-container {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 18px 20px;
    margin: 18px 0;
}

.checklist-container .checklist {
    margin: 0;
}

@media (max-width: 800px) {
    .decision-box {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   KAPITEL 6.3 - RASPI API & REGISTRIERUNG
   ============================================ */

.api-structure {
    display: grid;
    gap: 14px;
    margin: 18px 0;
}

.api-structure.compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.api-card,
.api-endpoint,
.question-box,
.answer-box {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 16px 18px;
}

.api-card.bad {
    border-left: 4px solid var(--danger);
}

.api-card.good {
    border-left: 4px solid var(--success);
}

.api-card h3,
.question-box h3 {
    margin-top: 0;
    color: var(--accent);
}

.api-result {
    color: var(--danger);
    font-weight: 700;
}

.api-endpoint {
    border-left: 4px solid var(--accent);
}

.api-endpoint strong {
    color: var(--text-primary);
}

.api-endpoint p {
    margin: 6px 0 0;
    color: var(--text-secondary);
}

.method {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    margin-right: 10px;
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.05em;
}

.method.post {
    background: rgba(255, 164, 27, 0.12);
    color: var(--warning);
    border: 1px solid rgba(255, 164, 27, 0.35);
}

.method.get {
    background: rgba(0, 217, 255, 0.1);
    color: var(--success);
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.method.url {
    background: rgba(233, 69, 96, 0.1);
    color: var(--accent);
    border: 1px solid rgba(233, 69, 96, 0.35);
}

.method.soap {
    background: rgba(255, 255, 255, 0.07);
    color: var(--text-secondary);
    border: 1px solid var(--code-border);
}

.method.ws {
    background: rgba(255, 164, 27, 0.12);
    color: var(--warning);
    border: 1px solid rgba(255, 164, 27, 0.35);
}

.workflow-text {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-left: 4px solid var(--success);
    border-radius: var(--border-radius);
    margin: 18px 0;
    overflow-x: auto;
}

.workflow-text pre {
    border: none;
    border-radius: 0;
    background: transparent;
    margin: 0;
    white-space: pre;
}

.question-box {
    border-left: 4px solid var(--warning);
    margin: 18px 0;
}

.question-box p {
    margin: 6px 0;
}

.answer-box {
    border-left: 4px solid var(--success);
    color: var(--text-secondary);
}

.answer-box strong {
    color: var(--text-primary);
}

@media (max-width: 800px) {
    .api-structure.compare {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   KAPITEL 6.4 - CUSTOMER & DEVICE MANAGEMENT UI
   ============================================ */

.customer-selection-options {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.customer-search-demo {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 12px;
    margin: 10px 0;
}

.customer-search-demo.wide {
    max-width: 520px;
}

.customer-search-demo label {
    display: block;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 7px;
}

.fake-input {
    background: var(--bg-secondary);
    border: 1px solid var(--accent);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 9px 11px;
}

.fake-results {
    display: grid;
    gap: 5px;
    margin-top: 8px;
}

.fake-results span {
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    border-radius: 5px;
    color: var(--text-secondary);
    padding: 7px 10px;
}

.fake-results span:first-child {
    border-color: rgba(0, 217, 255, 0.35);
    color: var(--text-primary);
}

.role-menu {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.role-menu-card {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 18px 20px;
}

.role-menu-card.admin {
    border-left: 4px solid var(--warning);
}

.role-menu-card.customer {
    border-left: 4px solid var(--success);
}

.role-menu-card h3 {
    margin-top: 0;
    color: var(--accent);
}

.role-menu-card ul {
    margin: 10px 0 0 18px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.ui-menu-preview,
.device-list-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 18px 20px;
    margin: 18px 0;
}

.ui-panel-title {
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.device-list-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}

.device-list-header button {
    background: var(--accent);
    border: none;
    border-radius: 6px;
    color: var(--text-primary);
    cursor: default;
    font-weight: 700;
    padding: 8px 12px;
}

.device-card {
    display: grid;
    grid-template-columns: auto 1.2fr 1.4fr auto;
    gap: 10px;
    align-items: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--code-border);
    border-radius: 7px;
    padding: 11px 12px;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 13px;
}

.device-card strong {
    color: var(--text-primary);
}

.device-status {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.device-card.online .device-status {
    background: var(--success);
    box-shadow: 0 0 12px rgba(0, 217, 255, 0.65);
}

.device-card.offline .device-status {
    background: var(--danger);
    box-shadow: 0 0 12px rgba(255, 71, 87, 0.45);
}

.device-workflow {
    display: grid;
    gap: 10px;
    margin: 20px 0;
}

.device-workflow div {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    background: var(--bg-secondary);
    border: 1px solid var(--code-border);
    border-radius: var(--border-radius);
    padding: 12px 14px;
    color: var(--text-secondary);
}

.device-workflow span {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 2px solid var(--accent);
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    flex-shrink: 0;
}

@media (max-width: 1000px) {
    .customer-selection-options {
        grid-template-columns: 1fr;
    }

    .device-card {
        grid-template-columns: auto 1fr;
    }
}

@media (max-width: 700px) {
    .role-menu {
        grid-template-columns: 1fr;
    }

    .device-list-header {
        align-items: flex-start;
        flex-direction: column;
    }
}