/**
 * Leistungen Page Styles
 * Story 3.1: Leistungen Page - "Erste Schritte" Positioning
 *
 * Responsive styling for services page with persona-aligned categorization
 * and clear differentiation messaging from typical consulting approaches.
 */

/* ============================================================================
   CSS Custom Properties
   ============================================================================ */
:root {
    --leistungen-primary: #2563eb;
    --leistungen-secondary: #6366f1;
    --leistungen-accent: #10b981;
    --leistungen-warning: #f59e0b;
    --leistungen-danger: #ef4444;
    --persona-cfo: #059669;
    --persona-it: #2563eb;
    --persona-gf: #7c3aed;
    --featured-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --card-bg: #ffffff;
    --card-hover-bg: #f8fafc;
    --border-light: #e2e8f0;
    --border-focus: #6366f1;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius-sm: 6px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --transition: all 0.3s ease;
}

/* ============================================================================
   Leistungen Page Base Layout
   ============================================================================ */
.leistungen-page {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    min-height: 100vh;
}

/* ============================================================================
   Leistungen Hero Section
   ============================================================================ */
.leistungen-hero-section {
    padding: var(--space-20) 0 var(--space-16);
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f8fafc 100%);
    position: relative;
    overflow: hidden;
}

.leistungen-hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(99,102,241,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.6;
    pointer-events: none;
}

.leistungen-hero-section .container {
    position: relative;
    z-index: 2;
}

.leistungen-hero-section .display-4 {
    color: var(--text-primary);
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: var(--space-6);
}

.leistungen-hero-section .lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-8);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Differentiators */
.hero-differentiators {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    flex-wrap: wrap;
    margin-top: var(--space-8);
}

.differentiator-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background: var(--card-bg);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-card);
    border: 2px solid rgba(99, 102, 241, 0.1);
    transition: var(--transition);
}

.differentiator-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(99, 102, 241, 0.3);
}

.differentiator-item i {
    font-size: 1.25rem;
    color: var(--leistungen-secondary);
}

.differentiator-item span {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

/* ============================================================================
   Service Categories Section
   ============================================================================ */
.service-categories-section {
    padding: var(--space-20) 0;
    position: relative;
}

.service-categories-section .display-5 {
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: var(--space-4);
}

.service-categories-section .lead {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

/* Service Categories Grid */
.service-categories-grid {
    margin-top: var(--space-12);
}

/* ============================================================================
   Service Category Cards
   ============================================================================ */
.service-category-card {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.service-category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(99, 102, 241, 0.3);
}

/* Featured Category */
.featured-category {
    border-color: var(--leistungen-secondary);
    position: relative;
}

.featured-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--featured-gradient);
}

.featured-badge {
    position: absolute;
    top: -2px;
    right: var(--space-6);
    background: var(--featured-gradient);
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    box-shadow: var(--shadow-card);
    z-index: 10;
}

.featured-badge i {
    font-size: 0.75rem;
}

/* Category Header */
.category-header {
    padding: var(--space-8) var(--space-6) var(--space-4);
    text-align: center;
    position: relative;
}

.category-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-5);
    transition: var(--transition);
}

.category-icon i {
    font-size: 2rem;
    color: var(--leistungen-secondary);
    transition: var(--transition);
}

.service-category-card:hover .category-icon {
    transform: scale(1.05);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.15));
}

.service-category-card:hover .category-icon i {
    color: var(--leistungen-primary);
    transform: scale(1.1);
}

.category-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    line-height: 1.3;
}

/* Persona Badge */
.persona-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(99, 102, 241, 0.1);
    color: var(--leistungen-secondary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--border-radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.persona-badge i {
    font-size: 0.875rem;
}

/* Category Body */
.category-body {
    padding: 0 var(--space-6) var(--space-6);
    flex: 1;
}

/* Approach Message */
.approach-message {
    background: rgba(16, 185, 129, 0.05);
    border: 2px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--border-radius-lg);
    padding: var(--space-5);
    margin-bottom: var(--space-6);
}

.approach-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--leistungen-accent);
    margin-bottom: var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.approach-title i {
    font-size: 1rem;
    opacity: 0.8;
}

.approach-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    font-size: 0.95rem;
}

/* Service Features */
.service-features {
    margin-bottom: var(--space-6);
}

.service-features h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    font-size: 0.95rem;
    line-height: 1.5;
}

.feature-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.feature-list li i {
    color: var(--leistungen-accent);
    font-size: 0.875rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.feature-list li span {
    color: var(--text-secondary);
}

/* Success Metric */
.success-metric {
    text-align: center;
    margin-bottom: var(--space-6);
}

.metric-highlight {
    background: var(--success-gradient);
    color: white;
    padding: var(--space-4) var(--space-6);
    border-radius: var(--border-radius-lg);
    display: inline-block;
    min-width: 200px;
}

.metric-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: var(--space-2);
}

.metric-label {
    font-size: 0.875rem;
    font-weight: 600;
    opacity: 0.95;
    line-height: 1.3;
}

/* Category Footer */
.category-footer {
    padding: var(--space-6);
    border-top: 1px solid var(--border-light);
    background: rgba(248, 250, 252, 0.8);
    text-align: center;
    margin-top: auto;
}

.timeline-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.timeline-info i {
    color: var(--leistungen-warning);
    font-size: 0.875rem;
}

.category-cta-btn {
    background: var(--leistungen-primary);
    border-color: var(--leistungen-primary);
    color: white;
    font-weight: 600;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--border-radius-md);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    min-height: 48px;
}

.category-cta-btn:hover,
.category-cta-btn:focus {
    background: var(--leistungen-secondary);
    border-color: var(--leistungen-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
    color: white;
}

/* ============================================================================
   Differentiation Section
   ============================================================================ */
.differentiation-section {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    position: relative;
}

.differentiation-card {
    background: var(--card-bg);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-hover);
    padding: var(--space-10);
    border: 2px solid rgba(99, 102, 241, 0.1);
    position: relative;
    overflow: hidden;
}

.differentiation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--featured-gradient);
}

.differentiation-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-8);
    line-height: 1.3;
}

/* Comparison Points */
.comparison-points {
    margin-bottom: var(--space-6);
}

.comparison-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.comparison-item:last-child {
    margin-bottom: 0;
}

.comparison-label {
    font-weight: 700;
    color: var(--text-primary);
    min-width: 140px;
    font-size: 0.95rem;
}

.comparison-content {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    flex: 1;
}

.comparison-content.wrong {
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid rgba(239, 68, 68, 0.2);
    color: #dc2626;
}

.comparison-content.wrong i {
    color: #ef4444;
}

.comparison-content.right {
    background: rgba(16, 185, 129, 0.1);
    border: 2px solid rgba(16, 185, 129, 0.2);
    color: #059669;
}

.comparison-content.right i {
    color: var(--leistungen-accent);
}

.differentiation-description {
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.7;
    margin: 0;
}

/* Step Visualization */
.differentiation-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.step-visualization {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
    justify-content: center;
}

.step-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
}

.step-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--featured-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    box-shadow: var(--shadow-card);
}

.step-item span {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.step-arrow {
    font-size: 1.5rem;
    color: var(--leistungen-secondary);
    font-weight: 700;
}

/* ============================================================================
   Service CTA Section
   ============================================================================ */
.service-cta-section {
    padding: var(--space-20) 0;
    background: var(--card-bg);
    text-align: center;
}

.service-cta-section .cta-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.service-cta-section .cta-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons-row {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.cta-buttons-row .btn {
    min-height: 56px;
    padding: var(--space-4) var(--space-8);
    font-weight: 600;
    border-radius: var(--border-radius-md);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.cta-buttons-row .btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

/* ============================================================================
   Service Inquiry Modal
   ============================================================================ */
.service-inquiry-form .modal-content {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-hover);
}

.service-inquiry-form .modal-header {
    background: linear-gradient(135deg, var(--card-bg) 0%, #f8fafc 100%);
    border-bottom: 1px solid var(--border-light);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.service-inquiry-form .modal-title {
    color: var(--text-primary);
    font-weight: 700;
}

.service-inquiry-form .modal-body {
    padding: var(--space-6);
}

#category-context {
    border-left: 4px solid var(--leistungen-secondary);
}

.service-inquiry-form .form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.service-inquiry-form .form-control,
.service-inquiry-form .form-select {
    border: 2px solid var(--border-light);
    border-radius: var(--border-radius-md);
    padding: var(--space-3) var(--space-4);
    transition: var(--transition);
}

.service-inquiry-form .form-control:focus,
.service-inquiry-form .form-select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    outline: none;
}

.service-inquiry-form .form-check-input {
    border: 2px solid var(--border-light);
    transition: var(--transition);
}

.service-inquiry-form .form-check-input:checked {
    background-color: var(--border-focus);
    border-color: var(--border-focus);
}

.service-inquiry-form .invalid-feedback {
    color: var(--leistungen-danger);
    font-weight: 500;
}

/* ============================================================================
   Responsive Design - Mobile First
   ============================================================================ */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .hero-differentiators {
        gap: var(--space-6);
    }

    .step-visualization {
        gap: var(--space-6);
    }

    .cta-buttons-row {
        gap: var(--space-6);
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    .leistungen-hero-section {
        padding: var(--space-24) 0 var(--space-20);
    }

    .leistungen-hero-section .display-4 {
        font-size: 3rem;
    }

    .service-categories-section {
        padding: var(--space-24) 0;
    }

    .category-header {
        padding: var(--space-10) var(--space-8) var(--space-6);
    }

    .category-body {
        padding: 0 var(--space-8) var(--space-8);
    }

    .category-footer {
        padding: var(--space-8);
    }

    .differentiation-section {
        padding: var(--space-24) 0;
    }

    .differentiation-card {
        padding: var(--space-12);
    }

    .differentiation-title {
        font-size: 2.25rem;
    }

    .comparison-item {
        margin-bottom: var(--space-6);
    }

    .service-cta-section {
        padding: var(--space-24) 0;
    }

    .service-cta-section .cta-title {
        font-size: 2.5rem;
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .leistungen-hero-section .display-4 {
        font-size: 3.5rem;
    }

    .category-title {
        font-size: 1.75rem;
    }

    .service-categories-grid {
        margin-top: var(--space-16);
    }

    .step-visualization {
        flex-direction: row;
        gap: var(--space-8);
    }

    .step-arrow {
        font-size: 2rem;
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .leistungen-hero-section .lead {
        font-size: 1.375rem;
    }

    .service-categories-section .lead {
        font-size: 1.25rem;
    }

    .differentiation-description {
        font-size: 1.25rem;
    }
}

/* ============================================================================
   Accessibility and Motion Preferences
   ============================================================================ */
.btn:focus,
.category-cta-btn:focus {
    outline: 3px solid rgba(37, 99, 235, 0.5);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .service-category-card,
    .differentiation-card {
        border-width: 3px;
        border-color: currentColor;
    }

    .featured-badge,
    .persona-badge,
    .metric-highlight {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .service-category-card,
    .category-icon,
    .category-cta-btn,
    .differentiator-item,
    .btn {
        transition: none;
    }

    .service-category-card:hover,
    .category-cta-btn:hover,
    .differentiator-item:hover,
    .btn:hover {
        transform: none;
    }
}

/* ============================================================================
   Print Styles
   ============================================================================ */
@media print {
    .leistungen-page,
    .service-category-card,
    .differentiation-card {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }

    .leistungen-hero-section::before,
    .featured-badge,
    .category-cta-btn {
        display: none !important;
    }

    .service-category-card {
        border: 2px solid black !important;
        page-break-inside: avoid;
        margin-bottom: 2rem !important;
    }
}