/* ==========================================================================
   KERANO Design System
   Premium Gießpulver - Made in Germany
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
    /* Colors - KERANO Official Brand Palette */
    --color-primary: #FFFFFF;
    --color-background: #f9f7f2;
    --color-background-alt: #f0ede6;

    /* Brand Accent Colors */
    --color-accent-mint: #69f0ae;
    --color-accent-mint-light: #b2f7d1;
    --color-accent-pink: #d6336c;
    --color-accent-pink-light: #f0a0be;
    --color-brand-blue: #0044ff;
    --color-brand-blue-light: #668cff;

    /* Legacy naming (for compatibility) */
    --color-dusty-rose: #d6336c;
    --color-dusty-rose-light: #f0a0be;
    --color-sage-green: #69f0ae;
    --color-sage-green-light: #b2f7d1;
    --color-powder-blue: #0044ff;
    --color-powder-blue-light: #668cff;
    --color-terracotta: #d6336c;
    --color-terracotta-light: #f0a0be;
    --color-cream: #f9f7f2;
    --color-gold: #69f0ae;

    /* Text Colors */
    --color-text: #2b2e35;
    --color-text-light: #4a4d55;
    --color-text-muted: #6b6e76;

    /* Status Colors */
    --color-success: #69f0ae;
    --color-warning: #ffd93d;
    --color-error: #d6336c;

    /* Typography */
    --font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.05), 0 4px 6px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.08), 0 10px 10px rgba(0,0,0,0.04);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --container-max: 1200px;
    --nav-height: 70px;
}

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

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

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

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* --------------------------------------------------------------------------
   Progress Bar
   -------------------------------------------------------------------------- */
.progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    z-index: 1001;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-accent-pink), var(--color-accent-mint));
    transition: width 100ms ease-out;
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.1em;
    color: var(--color-brand-blue);
}

.nav-links {
    display: none;
    gap: var(--space-xl);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-brand-blue);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-mobile-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.nav-mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-normal);
}

.nav-mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

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

/* Mobile Navigation */
.nav-mobile {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: var(--color-primary);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-mobile.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.nav-mobile-link {
    padding: var(--space-md);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.nav-mobile-link:hover {
    background: var(--color-background-alt);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-height) + var(--space-2xl)) var(--space-lg) var(--space-2xl);
    background: linear-gradient(135deg, var(--color-background) 0%, #f5f2eb 50%, #e8f5ed 100%);
    position: relative;
    overflow: hidden;
}

.hero-decoration {
    position: absolute;
    top: 20%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent-mint-light) 0%, var(--color-brand-blue-light) 100%);
    opacity: 0.2;
    filter: blur(60px);
}

.hero-content {
    max-width: 700px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-xl);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
    color: var(--color-brand-blue);
}

.hero-title span {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-normal);
    letter-spacing: 0.2em;
    margin-top: var(--space-sm);
    color: var(--color-text-light);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.hero-description {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin-bottom: var(--space-2xl);
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.hero-feature-icon {
    font-size: var(--font-size-lg);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--color-brand-blue);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--color-brand-blue-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--color-primary);
    color: var(--color-brand-blue);
    border: 2px solid var(--color-brand-blue);
}

.btn-secondary:hover {
    background: var(--color-brand-blue);
    color: var(--color-primary);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
}

/* --------------------------------------------------------------------------
   Container & Sections
   -------------------------------------------------------------------------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-4xl) 0;
}

.section--alt {
    background: var(--color-background-alt);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-number {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-accent-mint-light);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
}

/* --------------------------------------------------------------------------
   Checklist Section (Material)
   -------------------------------------------------------------------------- */
.checklist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.checklist-card {
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.checklist-card-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-lg);
}

.checklist-card-title .icon {
    font-size: var(--font-size-xl);
}

.checklist {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.checklist-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--color-sage-green);
    cursor: pointer;
    flex-shrink: 0;
}

.checklist-item label {
    cursor: pointer;
    transition: color var(--transition-fast);
}

.checklist-item input:checked + label {
    color: var(--color-text-muted);
    text-decoration: line-through;
}

/* Info Card (Time) */
.info-card {
    display: flex;
    gap: var(--space-xl);
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-accent-mint);
}

.info-card-icon {
    font-size: var(--font-size-3xl);
}

.info-card-content h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-md);
}

.time-breakdown {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
}

.time-item {
    display: flex;
    flex-direction: column;
}

.time-value {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-blue);
}

.time-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.info-card-note {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Steps Section
   -------------------------------------------------------------------------- */
.steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.step-card {
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.step-header {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.step-header:hover {
    background: var(--color-background);
}

.step-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-brand-blue) 0%, var(--color-accent-pink) 100%);
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.step-title-wrapper {
    flex: 1;
}

.step-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-xs);
}

.step-time {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.step-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: transform var(--transition-normal);
}

.step-card.active .step-toggle {
    transform: rotate(180deg);
}

.step-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.step-card.active .step-content {
    max-height: 2000px;
}

.step-content > * {
    padding: 0 var(--space-xl);
    margin-bottom: var(--space-lg);
}

.step-content > *:last-child {
    padding-bottom: var(--space-xl);
}

.step-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.step-list li {
    position: relative;
    padding-left: var(--space-lg);
}

.step-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent-mint);
}

/* Pro Tip */
.pro-tip {
    background: var(--color-accent-mint-light);
    border-radius: var(--radius-md);
    padding: var(--space-lg) !important;
}

.pro-tip-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-sm);
}

.pro-tip p {
    margin: 0;
    font-size: var(--font-size-sm);
}

/* Formula Box */
.formula-box {
    background: var(--color-cream);
    border-radius: var(--radius-md);
    padding: var(--space-xl) !important;
    text-align: center;
}

.formula-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.formula {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.formula-part {
    background: var(--color-primary);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
}

.formula-plus {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent-pink);
}

/* Sizing Guide */
.sizing-guide h4,
.examples h4,
.reasons h4,
.step-by-step h4,
.technique h4,
.bubble-prevention h4,
.timeline h4,
.consistency-check h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-md);
}

.sizing-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.sizing-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-background);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.sizing-icon {
    font-size: var(--font-size-xl);
}

.sizing-name {
    font-weight: var(--font-weight-medium);
}

.sizing-amount {
    color: var(--color-brand-blue);
    font-weight: var(--font-weight-bold);
}

/* Warning Box */
.warning-box {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    background: var(--color-dusty-rose-light);
    border-radius: var(--radius-md);
    padding: var(--space-lg) !important;
}

.warning-box--info {
    background: var(--color-powder-blue-light);
}

.warning-icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.warning-box p {
    margin: 0;
    font-size: var(--font-size-sm);
}

/* Fix Grid */
.fix-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.fix-item {
    background: var(--color-background);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.fix-problem {
    display: block;
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent-pink);
    margin-bottom: var(--space-xs);
}

.fix-solution {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* Timeline */
.timeline-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.timeline-item {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-md);
    background: var(--color-background);
    border-radius: var(--radius-md);
}

.timeline-item--ready {
    background: var(--color-accent-mint-light);
}

.timeline-time {
    font-weight: var(--font-weight-bold);
    min-width: 80px;
}

.timeline-desc {
    color: var(--color-text-light);
}

.timeline-item--ready .timeline-desc {
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
}

/* Celebration */
.celebration {
    text-align: center;
    font-size: var(--font-size-2xl);
    padding: var(--space-lg) !important;
}

/* Result Box */
.result-box {
    background: var(--color-accent-mint-light);
    border-radius: var(--radius-md);
    padding: var(--space-lg) !important;
}

.result-box h4 {
    margin-bottom: var(--space-md);
}

.result-box ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Errors Section
   -------------------------------------------------------------------------- */
.errors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.error-card {
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--color-accent-pink);
}

.error-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.error-icon {
    font-size: var(--font-size-xl);
}

.error-header h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.error-symptom,
.error-solution {
    margin-bottom: var(--space-md);
}

.error-symptom .label,
.error-solution .label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.error-solution .label {
    color: var(--color-accent-mint);
}

.error-symptom p,
.error-solution p {
    font-size: var(--font-size-sm);
    margin: 0;
}

/* --------------------------------------------------------------------------
   Projects Section
   -------------------------------------------------------------------------- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.project-card {
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.project-difficulty {
    margin-bottom: var(--space-md);
}

.project-difficulty .star {
    font-size: var(--font-size-sm);
    opacity: 0.3;
}

.project-difficulty .star.filled {
    opacity: 1;
}

.project-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-md);
}

.project-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-md);
}

.project-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.project-tip {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    background: var(--color-background-alt);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   Accordion (Tips Section)
   -------------------------------------------------------------------------- */
.accordion {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.accordion-item {
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl);
    text-align: left;
    transition: background var(--transition-fast);
}

.accordion-header:hover {
    background: var(--color-background);
}

.accordion-icon {
    font-size: var(--font-size-xl);
}

.accordion-title {
    flex: 1;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.accordion-chevron {
    color: var(--color-text-muted);
    transition: transform var(--transition-normal);
}

.accordion-item.active .accordion-chevron {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.accordion-item.active .accordion-content {
    max-height: 2000px;
}

.accordion-inner {
    padding: 0 var(--space-xl) var(--space-xl);
}

.accordion-inner h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-md);
    margin-top: var(--space-lg);
}

.accordion-inner h4:first-child {
    margin-top: 0;
}

.accordion-inner ul,
.accordion-inner ol {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.accordion-inner li {
    position: relative;
    padding-left: var(--space-lg);
}

.accordion-inner ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent-mint);
}

.accordion-inner ol {
    counter-reset: item;
}

.accordion-inner ol li {
    counter-increment: item;
}

.accordion-inner ol li::before {
    content: counter(item) '.';
    position: absolute;
    left: 0;
    color: var(--color-brand-blue);
    font-weight: var(--font-weight-semibold);
}

/* Color Grid */
.color-recipes {
    background: var(--color-background-alt);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-top: var(--space-lg);
}

.color-recipes h4 {
    margin-top: 0 !important;
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-md);
}

.color-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.color-swatch {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
    box-shadow: var(--shadow-sm);
}

.color-name {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
}

.color-recipe {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Finish Options */
.finish-option,
.technique-option {
    background: var(--color-background-alt);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.finish-option h4,
.technique-option h4 {
    margin-top: 0 !important;
}

/* --------------------------------------------------------------------------
   FAQ Section
   -------------------------------------------------------------------------- */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg);
    text-align: left;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--color-background);
}

.faq-chevron {
    color: var(--color-text-muted);
    flex-shrink: 0;
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-chevron {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--color-text-light);
}

/* --------------------------------------------------------------------------
   Cheat Sheet Section
   -------------------------------------------------------------------------- */
.cheatsheet-section {
    background: linear-gradient(135deg, var(--color-accent-mint-light) 0%, #e0e8ff 100%);
}

.cheatsheet {
    background: var(--color-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-xl);
    max-width: 700px;
    margin: 0 auto var(--space-xl);
}

.cheatsheet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 2px solid var(--color-background-alt);
}

.cheatsheet-logo {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.1em;
    color: var(--color-brand-blue);
}

.cheatsheet-badge {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.cheatsheet-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.cheatsheet-item {
    background: var(--color-background-alt);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.cheatsheet-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.cheatsheet-value {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.cheatsheet-footer {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 2px solid var(--color-background-alt);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.print-btn {
    display: block;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background: var(--color-text);
    color: var(--color-primary);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-message h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-md);
}

.footer-message > p {
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--space-xl);
}

.footer-reminder {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-reminder p {
    color: rgba(255,255,255,0.8);
    font-size: var(--font-size-sm);
}

.footer-cta h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-lg);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.footer-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: rgba(255,255,255,0.1);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.footer-link:hover {
    background: rgba(255,255,255,0.15);
}

.footer-link-icon {
    font-size: var(--font-size-2xl);
}

.footer-link-text {
    display: flex;
    flex-direction: column;
}

.footer-link-text strong {
    font-weight: var(--font-weight-semibold);
}

.footer-link-text small {
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,0.7);
}

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

.footer-shop p {
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--space-md);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
    margin-bottom: var(--space-sm);
}

.footer-legal {
    margin: var(--space-md) 0;
}

.footer-legal a {
    color: rgba(255,255,255,0.6);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: #fff;
    text-decoration: underline;
}

.footer-divider {
    color: rgba(255,255,255,0.3);
    margin: 0 var(--space-sm);
}

.footer-copyright {
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,0.5);
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
    /* Reset page */
    html, body {
        height: auto !important;
        overflow: visible !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    /* Hide everything */
    body > * {
        display: none !important;
    }

    /* Hide specific elements */
    .nav,
    .progress-container,
    .print-btn,
    .hero,
    .footer,
    #material,
    #schritte,
    #fehler,
    #projekte,
    #tipps,
    #faq {
        display: none !important;
    }

    /* Show only main and cheatsheet section */
    main {
        display: block !important;
    }

    .cheatsheet-section {
        display: block !important;
        background: white !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    .cheatsheet-section .container {
        padding: 0 !important;
        max-width: 100% !important;
    }

    .cheatsheet-section .section-header {
        display: none !important;
    }

    /* Style the cheatsheet for print */
    .cheatsheet {
        display: block !important;
        visibility: visible !important;
        position: relative !important;
        width: 100% !important;
        max-width: 100% !important;
        margin: 0 !important;
        padding: 20mm !important;
        box-shadow: none !important;
        border: 2px solid #2b2e35 !important;
        border-radius: 0 !important;
        page-break-after: avoid !important;
        page-break-inside: avoid !important;
    }

    .cheatsheet * {
        visibility: visible !important;
    }

    .cheatsheet-header {
        border-bottom-color: #2b2e35 !important;
    }

    .cheatsheet-logo {
        color: #0044ff !important;
    }

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

    .cheatsheet-item {
        background: #f5f5f5 !important;
        border: 1px solid #ddd !important;
    }

    .cheatsheet-footer {
        border-top-color: #2b2e35 !important;
    }

    /* Page setup */
    @page {
        size: A4;
        margin: 10mm;
    }
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }

    .nav-mobile-toggle {
        display: none;
    }

    .hero-title {
        font-size: var(--font-size-5xl);
    }

    .hero-title span {
        font-size: var(--font-size-3xl);
    }

    .section {
        padding: var(--space-4xl) 0;
    }

    .section-title {
        font-size: var(--font-size-4xl);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-links {
        flex-direction: row;
    }

    .footer-link {
        flex: 1;
    }
}

@media (min-width: 1024px) {
    .info-card {
        max-width: 800px;
        margin: 0 auto;
    }
}

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

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

/* Scroll reveal animation class */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}