/* ==========================================================================
   Institut für Bioenergetik/Bioresonanz - Main Stylesheet
   ========================================================================== */

/* CSS Variables / Design System
   ========================================================================== */
:root {
    /* Colors */
    --color-primary: #40530d;
    --color-secondary: #4e5c25;
    --color-accent: #5e7f00;
    --color-light: #d3dfa1;
    --color-bg: #f8f9f4;
    --color-text: #1d2800;
    --color-gold: #d9b245;
    --color-white: #ffffff;
    --color-grey-light: #f5f5f5;
    --color-border: #dddddd;
    
    /* Typography */
    --font-primary: 'Open Sans', sans-serif;
    --font-heading: 'Playfair Display', serif;
    --font-size-root: 106.25%; /* 17px */
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 20px;
    
    /* Transitions */
    --transition-base: 0.3s ease;
    --transition-fast: 0.15s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
}


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

html {
    font-size: var(--font-size-root);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    overflow-x: hidden;
}


/* Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--color-text);
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.35rem; }
h3 { font-size: 1.88rem; }
h4 { font-size: 1.41rem; }
h5 { font-size: 1.18rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1em;
}

p:last-child {
    margin-bottom: 0;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover,
a:focus {
    color: var(--color-primary);
    text-decoration: underline;
}

strong {
    font-weight: 600;
}


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

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}


/* Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 16px 30px;
    font-family: var(--font-primary);
    font-size: 0.82rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: 0.5px;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-secondary);
    color: var(--color-white);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    text-decoration: none;
}

.btn-large {
    padding: 20px 40px;
    font-size: 1rem;
}

/* CTA Button (ROT) - für Terminbuchung */
.btn-cta {
    display: inline-block;
    padding: 16px 30px;
    font-family: var(--font-primary);
    font-size: 0.82rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: 0.5px;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    background-color: #c9302c;  /* Kräftiges Rot */
    color: var(--color-white);
}

.btn-cta:hover,
.btn-cta:focus {
    background-color: #a02622;  /* Dunkleres Rot beim Hover */
    color: var(--color-white);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(201, 48, 44, 0.3);
}

.btn-cta.btn-large {
    padding: 20px 40px;
    font-size: 1rem;
}

/* Header / Navigation
   ========================================================================== */
.site-header {
    background-color: var(--color-bg);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    max-width: 164px;
    height: auto;
    display: block;
}

.main-navigation {
    display: flex;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--color-accent);
    font-weight: 400;
    font-size: 1rem;
    text-decoration: none;
    transition: color var(--transition-base);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-icon,
.menu-icon::before,
.menu-icon::after {
    width: 30px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.menu-icon {
    position: relative;
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    left: 0;
}

.menu-icon::before {
    top: -8px;
}

.menu-icon::after {
    top: 8px;
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--color-white);
    box-shadow: -4px 0 12px rgba(0,0,0,0.1);
    z-index: 999;
    transition: right 0.3s ease;
    overflow-y: auto;
}

.mobile-menu-overlay.active {
    right: 0;
}

.mobile-navigation {
    padding: var(--spacing-lg) var(--spacing-md);
}

.mobile-nav-menu {
    list-style: none;
}

.mobile-nav-menu li {
    margin-bottom: var(--spacing-md);
}

.mobile-nav-link {
    color: var(--color-text);
    font-size: 1.2rem;
    font-weight: 500;
    display: block;
    padding: 0.5rem 0;
}


/* Hero Section
   ========================================================================== */
.hero-section {
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-light) 100%);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.hero-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.hero-subtitle {
    color: var(--color-accent);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.hero-description {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}


/* Problem/Solution Section
   ========================================================================== */
.problem-solution-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.two-column-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.problem-box,
.solution-box {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.problem-box {
    background-color: #fff5f5;
    border-left: 4px solid #e57373;
}

.solution-box {
    background-color: #f1f8e9;
    border-left: 4px solid var(--color-accent);
}

.check-list {
    list-style: none;
    padding-left: 0;
}

.check-list li {
    padding: 0.5rem 0;
    padding-left: 2rem;
    position: relative;
}

.check-list li::before {
    content: '✗';
    position: absolute;
    left: 0;
    color: #e57373;
    font-weight: bold;
}


/* Benefits Section
   ========================================================================== */
.benefits-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.benefit-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}


/* Services Section
   ========================================================================== */
.services-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--color-grey-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.service-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}


/* Applications Section
   ========================================================================== */
.applications-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.application-box {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent);
    transition: all var(--transition-base);
}

.application-box:hover {
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-primary);
}


/* About Section
   ========================================================================== */
.about-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.about-intro {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.qualifications {
    margin: var(--spacing-lg) 0;
}

.qualification-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: var(--color-bg);
    border-radius: var(--radius-sm);
}

.qual-icon {
    font-size: 1.5rem;
}

.philosophy-quote {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background-color: var(--color-light);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-sm);
}

.philosophy-quote p {
    font-style: italic;
    font-size: 1.1rem;
}

.philosophy-quote footer {
    margin-top: var(--spacing-sm);
    font-style: normal;
    font-weight: 500;
}

.mission {
    padding: var(--spacing-md);
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
}


/* Testimonials Section
   ========================================================================== */
.testimonials-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.testimonial-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.testimonial-text {
    font-style: italic;
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.testimonial-author {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.9rem;
}


/* CTA Section
   ========================================================================== */
.cta-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
    text-align: center;
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}


/* Video Section
   ========================================================================== */
.video-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.video-wrapper {
    max-width: 800px;
    margin: 0 auto;
    aspect-ratio: 16/9;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.video-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--color-grey-light);
    gap: var(--spacing-md);
}


/* Contact Section
   ========================================================================== */
.contact-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
}

.contact-item h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.contact-item a {
    color: var(--color-text);
}

.contact-item a:hover {
    color: var(--color-accent);
}


/* Disclaimer Section
   ========================================================================== */
.disclaimer-section {
    padding: var(--spacing-lg) 0;
    background-color: #fff8e1;
}

.disclaimer-text {
    text-align: center;
    font-size: 0.9rem;
    max-width: 900px;
    margin: 0 auto;
    color: #666;
}


/* Footer
   ========================================================================== */
.site-footer {
    background-color: #e2eac0;
    padding: var(--spacing-lg) 0;
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-column p {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: var(--color-accent);
}

.copyright {
    color: var(--color-text);
    font-size: 0.9rem;
}


/* Back to Top Button
   ========================================================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-secondary);
    transform: translateY(-4px);
}


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

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

.text-right {
    text-align: right;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }


/* ==========================================================================
   KONTAKT-SEITE SPEZIFISCHE STYLES
   ========================================================================== */

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-light) 100%);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--color-accent);
    margin-top: var(--spacing-sm);
}

/* Contact Info Section */
.contact-info-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.contact-info-box,
.booking-box {
    padding: var(--spacing-lg);
    background-color: var(--color-grey-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.booking-box {
    background-color: var(--color-bg);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-item-detailed {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.contact-item-detailed:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.contact-icon-large {
    width: 55px;
    height: 55px;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.contact-details p {
    margin: 0;
    font-size: 1rem;
}

.contact-details a {
    color: var(--color-text);
    text-decoration: none;
}

.contact-details a:hover {
    color: var(--color-accent);
}

/* Map Section */
.map-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.map-container {
    max-width: 640px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.map-container img {
    width: 100%;
    height: auto;
    display: block;
}

.map-description {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.map-description p {
    margin-bottom: var(--spacing-md);
}

.map-description p:last-child {
    margin-bottom: 0;
}

/* Additional Info Section */
.additional-info-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.info-boxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.info-box {
    padding: var(--spacing-lg);
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    text-align: center;
}

.info-box h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

/* CTA Buttons Group */
.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}