/* Custom styles for 21start website - Based on personal-website theme */

/* ── Selbst gehostete Schriften (zuvor Google Fonts) ──────────────── */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url(../assets/fonts/inter-300-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url(../assets/fonts/inter-300-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(../assets/fonts/inter-400-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(../assets/fonts/inter-400-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(../assets/fonts/inter-500-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(../assets/fonts/inter-500-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(../assets/fonts/inter-600-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(../assets/fonts/inter-600-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(../assets/fonts/inter-700-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(../assets/fonts/inter-700-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Libre Baskerville';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(../assets/fonts/libre-baskerville-400-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Libre Baskerville';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(../assets/fonts/libre-baskerville-400-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Libre Baskerville';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(../assets/fonts/libre-baskerville-700-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Libre Baskerville';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(../assets/fonts/libre-baskerville-700-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(../assets/fonts/jetbrains-mono-400-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(../assets/fonts/jetbrains-mono-400-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(../assets/fonts/jetbrains-mono-500-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(../assets/fonts/jetbrains-mono-500-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* CSS Variables from personal-website */
:root {
    --bg-dark: #0a1f0a;
    --text-light: #fffbeb;
    --accent-orange: #f7931a;
    --accent-orange-hover: #ffaa3d;
    --card-bg: #0e2e0e;
    --section-padding: 5rem 2rem;
}

/* Base-Reset (zuvor über Tailwind Preflight bereitgestellt) */
*, *::before, *::after {
    box-sizing: border-box;
}

/* Override common Tailwind classes with dark theme */
body {
    margin: 0;
    background-color: var(--bg-dark) !important;
    color: var(--text-light) !important;
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
}

/* Universal layout classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.pt-24 { padding-top: 6rem; }
.pb-16 { padding-bottom: 4rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.p-2 { padding: 0.5rem; }
.p-6 { padding: 1.5rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }

/* Flexbox classes */
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.flex-shrink-0 { flex-shrink: 0; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.space-x-2 > * + * { margin-left: 0.5rem; }
.space-x-8 > * + * { margin-left: 2rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }

/* Grid classes */
.grid { display: grid; }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }

/* Text classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-6xl { font-size: 3.75rem; line-height: 1; }
.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-serif { font-family: 'Libre Baskerville', serif; }
.font-mono { font-family: 'JetBrains Mono', monospace; }
.italic { font-style: italic; }
.uppercase { text-transform: uppercase; }
.tracking-wider { letter-spacing: 0.05em; }

/* Header and navigation */
.fixed { position: fixed; }
.top-0 { top: 0; }
.w-full { width: 100%; }
.z-50 { z-index: 50; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Override navigation and header backgrounds */
.bg-white\/95 {
    background-color: rgba(10, 31, 10, 0.95) !important;
    backdrop-filter: blur(10px);
}

.bg-white {
    background-color: var(--card-bg) !important;
}

/* Override ALL colorful backgrounds with conservative design */
.bg-gray-50 {
    background-color: var(--bg-dark) !important;
}

.bg-gray-100 {
    background-color: var(--card-bg) !important;
}

.bg-gray-900 {
    background-color: var(--bg-dark) !important;
}

/* Override gradient backgrounds */
.bg-gradient-to-br {
    background: var(--bg-dark) !important;
}

section.bg-gradient-to-br {
    background: linear-gradient(rgba(10, 31, 10, 0.9), rgba(10, 31, 10, 0.9)), url('https://images.unsplash.com/photo-1622632168931-97c042df0f2a?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') !important;
    background-size: cover !important;
    background-position: center !important;
}

/* Force override for all gradient combinations */
.bg-gradient-to-br.from-orange-50.to-white,
.bg-gradient-to-br.from-white.to-orange-50 {
    background: var(--bg-dark) !important;
}

.from-orange-50,
.from-white,
.to-white,
.to-orange-50 {
    background-color: transparent !important;
}

/* Override ALL colorful backgrounds with borders instead */
.bg-blue-50,
.bg-green-50,
.bg-red-50,
.bg-yellow-50,
.bg-orange-50,
.bg-purple-50,
.bg-indigo-50,
.bg-pink-50 {
    background-color: transparent !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
}

/* Override ALL colorful text with conservative colors */
.text-gray-900,
.text-gray-800,
.text-gray-700,
.text-gray-600,
.text-gray-500,
.text-gray-400,
.text-gray-300 {
    color: var(--text-light) !important;
}

/* Override colorful heading texts */
.text-blue-900,
.text-green-900,
.text-red-900,
.text-yellow-900,
.text-orange-900,
.text-purple-900,
.text-indigo-900,
.text-pink-900 {
    color: var(--text-light) !important;
}

.text-blue-800,
.text-green-800,
.text-red-800,
.text-yellow-800,
.text-orange-800,
.text-purple-800,
.text-indigo-800,
.text-pink-800 {
    color: var(--text-light) !important;
}

.text-blue-700,
.text-green-700,
.text-red-700,
.text-yellow-700,
.text-orange-700,
.text-purple-700,
.text-indigo-700,
.text-pink-700 {
    color: var(--text-light) !important;
}

/* Keep orange for accents only */
.text-orange-500 {
    color: var(--accent-orange) !important;
}

/* Tags/Badges - bronze text only, no background, no border */
.bg-orange-100,
.bg-blue-100,
.bg-green-100,
.bg-purple-100,
.bg-red-100,
.bg-yellow-100,
.bg-indigo-100,
.bg-pink-100,
.bg-gray-100 {
    background-color: transparent !important;
    border: none !important;
    padding: 0 !important;
    border-radius: 0 !important;
}

/* Bronze colored text for tags */
.bg-orange-100 .text-orange-800,
.bg-blue-100 .text-blue-800,
.bg-green-100 .text-green-800,
.bg-purple-100 .text-purple-800,
.bg-red-100 .text-red-800,
.bg-yellow-100 .text-yellow-800,
.bg-indigo-100 .text-indigo-800,
.bg-pink-100 .text-pink-800,
.bg-gray-100 .text-gray-800,
span.text-orange-800,
span.text-blue-800,
span.text-green-800,
span.text-purple-800,
span.text-red-800,
span.text-yellow-800,
span.text-indigo-800,
span.text-pink-800,
span.text-gray-800 {
    color: #CD7F32 !important; /* Bronze color */
    background-color: transparent !important;
    border: none !important;
}

/* Override ALL colorful header backgrounds with conservative dark gray */
.bg-blue-500,
.bg-green-500,
.bg-red-500,
.bg-yellow-500,
.bg-purple-500,
.bg-indigo-500,
.bg-pink-500,
.bg-gray-500 {
    background-color: var(--card-bg) !important;
}

/* Keep orange header for special emphasis */
.bg-orange-500 {
    background-color: var(--accent-orange) !important;
}

/* Override table hover effects */
@media (hover: hover) {
    .hover\:bg-gray-50:hover {
        background-color: rgba(255, 255, 255, 0.05) !important;
    }
}

/* Override borders */
.border-gray-200 {
    border-color: rgba(255, 255, 255, 0.1) !important;
}

.border-gray-800 {
    border-color: rgba(255, 255, 255, 0.1) !important;
}

.border-b {
    border-bottom-color: rgba(255, 255, 255, 0.1) !important;
}

/* Button and interactive classes */
.transition-colors { transition: color 0.2s ease; }
@media (hover: hover) {
    .hover\:text-orange-500:hover { color: var(--accent-orange) !important; }
}
.block { display: block; }
.hidden { display: none; }
@media (min-width: 768px) {
    .md\:hidden { display: none; }
    .md\:flex { display: flex; }
}

/* Size classes */
.w-12 { width: 3rem; }
.h-12 { height: 3rem; }
.w-6 { width: 1.5rem; }
.h-6 { height: 1.5rem; }
.h-full { height: 100%; }

/* Border and rounded classes */
.border { border: 1px solid rgba(255, 255, 255, 0.1); }
.border-l-4 { border-left: 4px solid; }
.border-l-red-500 { border-left-color: #ef4444; }
.border-l-green-500 { border-left-color: #10b981; }
.border-l-yellow-500 { border-left-color: #eab308; }
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.overflow-hidden { overflow: hidden; }
.overflow-x-auto { overflow-x: auto; }

/* Table classes */
.min-w-full { min-width: 100%; }
.divide-y > * + * { border-top: 1px solid rgba(255, 255, 255, 0.1); }
.uppercase { text-transform: uppercase; }

/* Background classes */
.bg-gray-800 { background-color: var(--card-bg) !important; }
.bg-transparent { background-color: transparent; }

/* Special classes for specific elements */
.prose { max-width: 65ch; }
.prose-lg { font-size: 1.125rem; line-height: 1.75rem; }
.max-w-none { max-width: none; }

/* SVG classes */
.fill-none { fill: none; }
.stroke-current { stroke: currentColor; }

/* Accordion styles */
.accordion-item {
    background-color: var(--card-bg) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-radius: 0.5rem;
    overflow: hidden;
}

.accordion-header {
    background-color: transparent !important;
    border: none !important;
    cursor: pointer;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    text-align: left;
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 500;
}

.accordion-header:hover {
    background-color: rgba(255, 255, 255, 0.05) !important;
}

.accordion-content {
    display: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.accordion-content.active {
    display: block;
    max-height: 1000px;
    padding: 0 1.5rem 1.25rem;
    transition: max-height 0.3s ease-in;
}

.accordion-icon {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    margin-left: 1rem;
    transition: transform 0.3s ease;
}

.accordion-icon.rotated {
    transform: rotate(180deg);
}

/* All h1 and h2 headings in darker white */
h1, h2 {
    color: #fffcbb !important;
}
.font-inter {
    font-family: 'Inter', sans-serif;
}

.font-mono {
    font-family: 'JetBrains Mono', monospace;
}

.font-serif {
    font-family: 'Libre Baskerville', serif;
}

/* Typography from personal-website */
h1, h3, h4, h5, h6 {
    font-family: 'Libre Baskerville', serif;
    margin-bottom: 1rem;
    line-height: 1.2;
}

h2 {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.2em;
    margin: 1em 0 0.5em 0;
    line-height: 1.5;
}

h1 {
    color: #ffffff !important;
}

/* Links */
a {
    color: var(--accent-orange);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-orange-hover);
}

/* Custom animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent-orange);
    border-radius: 4px;
}

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

/* Bitcoin orange color scheme */
.text-bitcoin {
    color: var(--accent-orange);
}

.bg-bitcoin {
    background-color: var(--accent-orange);
}

.border-bitcoin {
    border-color: var(--accent-orange);
}

/* Card hover effects */
.card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(247, 147, 26, 0.1);
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* Mobile menu animation */
.mobile-menu-enter {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Accordion styles */
.accordion-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background-color: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.accordion-header {
    cursor: pointer;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.2s ease;
    background: var(--card-bg);
    border-radius: 8px;
}

.accordion-header:hover,
.accordion-header.active {
    color: var(--accent-orange);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 1rem;
}

.accordion-content.active {
    max-height: 2000px;
    padding: 0 1rem 1rem;
}

.accordion-icon {
    transition: transform 0.3s ease;
}

.accordion-icon.rotated {
    transform: rotate(180deg);
}

/* Mobile accordion toggles for topics section */
.mobile-topic-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    text-align: left;
    padding: 1rem 1.25rem;
    background: none;
    border: 1px solid rgba(247, 147, 26, 0.25);
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-orange);
    font-family: 'Inter', sans-serif;
    margin-bottom: 0;
}

.mobile-topic-toggle + .tab-content {
    border: 1px solid rgba(247, 147, 26, 0.15);
    border-top: none;
    border-radius: 0 0 0.5rem 0.5rem;
    padding: 1.25rem !important;
    margin-bottom: 0.5rem;
}

.mobile-topic-toggle.open {
    border-radius: 0.5rem 0.5rem 0 0;
    border-color: rgba(247, 147, 26, 0.5);
}

.mobile-topic-icon {
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.mobile-topic-toggle.open .mobile-topic-icon {
    transform: rotate(180deg);
}

/* On mobile: all tab-contents hidden by default, shown when active via accordion */
@media (max-width: 767px) {
    .tab-content {
        display: none !important;
        padding: 0 !important;
    }
    .tab-content.active {
        display: block !important;
        animation: none;
    }
}

/* Tab styles */
.tab-container {
    border-bottom: 2px solid rgba(247, 147, 26, 0.2);
}

.tab-button {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    transition: color 0.2s ease;
    color: var(--text-light);
    font-family: 'Inter', sans-serif;
}

.tab-button:hover {
    color: var(--accent-orange);
}

.tab-button.active {
    color: var(--accent-orange);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--accent-orange);
}

.tab-content {
    display: none !important;
    padding: 2rem 0;
}

.tab-content.active {
    display: block !important;
    animation: fadeIn 0.3s ease-out;
}

/* Quote styles */
.quote {
    position: relative;
    padding-left: 3rem;
    font-style: italic;
}

.quote::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -0.5rem;
    font-size: 4rem;
    color: var(--accent-orange);
    opacity: 0.3;
}

/* Button styles from personal-website */
.btn-primary {
    background-color: var(--accent-orange);
    color: #000;
    border: 2px solid var(--accent-orange);
    padding: 0.8rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    display: inline-block;
    text-decoration: none;
}

.btn-primary:hover {
    background-color: var(--accent-orange-hover);
    border-color: var(--accent-orange-hover);
    color: #000;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-orange);
    border: 2px solid var(--accent-orange);
    padding: 0.8rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
    text-decoration: none;
}

.btn-secondary:hover {
    background-color: rgba(247, 147, 26, 0.1);
    transform: translateY(-2px);
}

/* Back-to-top button */
.back-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    padding: 0;
    border: 1px solid rgba(247, 147, 26, 0.4);
    border-radius: 50%;
    background-color: rgba(14, 46, 14, 0.85);
    color: var(--accent-orange);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease,
                background-color 0.2s ease, color 0.2s ease;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--accent-orange);
    color: #000;
    transform: translateY(-2px);
}

.back-to-top:focus-visible {
    outline: 2px solid var(--accent-orange);
    outline-offset: 3px;
}

@media (max-width: 767px) {
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 2.75rem;
        height: 2.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .back-to-top,
    .back-to-top.is-visible,
    .back-to-top:hover {
        transform: none;
        transition: opacity 0.2s ease, visibility 0.2s ease;
    }
}

/* Feature grid */
.feature-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Card styles from personal-website */
.card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(247, 147, 26, 0.1);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.card h3 {
    color: var(--accent-orange);
    margin-bottom: 1rem;
}

.card p {
    margin-bottom: 1.5rem;
    color: rgba(240, 240, 240, 0.8);
}

.card-link {
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    color: var(--accent-orange) !important;
}

.card-link:hover {
    color: var(--accent-orange-hover) !important;
}

.card-link::after {
    content: '→';
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.card-link:hover::after {
    transform: translateX(5px);
}

/* Disclaimer styles */
.disclaimer {
    background-color: rgba(247, 147, 26, 0.1);
    border-left: 4px solid var(--accent-orange);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 4px 4px 0;
}

.disclaimer h2 {
    color: var(--accent-orange);
    margin-top: 0;
}

/* Note styles */
.note {
    font-size: 0.9em;
    color: rgba(255, 251, 235, 0.7);
    margin: 2rem 0;
    padding: 1rem;
    background: rgba(10, 31, 10, 0.5);
    border-radius: 4px;
    border-left: 3px solid var(--accent-orange);
}

/* Step styles */
.step {
    margin: 2rem 0;
    padding: 1.5rem;
    background: rgba(10, 31, 10, 0.5);
    border-left: 4px solid var(--accent-orange);
    border-radius: 0 4px 4px 0;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-orange);
    color: #000;
    min-width: 28px;
    height: 28px;
    text-align: center;
    border-radius: 50%;
    margin-right: 10px;
    font-weight: bold;
    vertical-align: middle;
}

.step h3 {
    display: inline-block;
    margin: 0;
    vertical-align: middle;
}

/* Responsive typography */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem !important;
        line-height: 1.2;
    }
    
    .section-title {
        font-size: 2rem !important;
    }
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--accent-orange);
    border-top: 3px solid var(--bg-dark);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ── One-Pager: weacceptbtc ────────────────────────────────────────── */

/* Layout */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 6rem 1rem 4rem;
}

.full-section {
    padding: 5rem 1rem;
}

.cta-section {
    padding: 6rem 1rem;
    text-align: center;
}

.section-inner {
    max-width: 640px;
    margin: 0 auto;
}

.section-inner--wide {
    max-width: 720px;
    margin: 0 auto;
}

.section-inner--widest {
    max-width: 800px;
    margin: 0 auto;
}

.section-inner--hero {
    max-width: clamp(640px, 62vw, 860px);
    margin: 0 auto;
}

.section-inner--cta {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

/* Editorial two-column layout: number gutter + content */
.section-editorial {
    display: grid;
    grid-template-columns: 3.5rem 1fr;
    column-gap: 2.5rem;
    max-width: clamp(680px, 72vw, 1080px);
    margin: 0 auto;
}

.editorial-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-orange);
    opacity: 0.6;
    padding-top: 0.4rem;
}

.editorial-content {
    min-width: 0;
}

/* Full-width children span both columns */
.section-editorial .feature-grid,
.section-editorial .benefit-grid,
.section-editorial .steps-list,
.section-editorial .solution-grid {
    grid-column: 1 / -1;
    margin-top: 2.5rem;
}

@media (max-width: 640px) {
    .section-editorial {
        grid-template-columns: 1fr;
    }
    .editorial-num {
        margin-bottom: 0.25rem;
        padding-top: 0;
    }
}

/* Header */
.header-sticky {
    background-color: rgba(10, 31, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.site-logo {
    font-family: 'Libre Baskerville', serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-orange);
}

.site-domain {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: rgba(255, 251, 235, 0.55);
    letter-spacing: 0.05em;
}

.nav-link {
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 251, 235, 0.7);
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--accent-orange);
}

/* Dropdown im Hauptmenü */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle::after {
    content: '▾';
    margin-left: 0.35rem;
    font-size: 0.75em;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.75rem 1.25rem;
    margin: 0;
    list-style: none;
    background-color: rgba(10, 31, 10, 0.97);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 8px;
    min-width: 200px;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
    display: flex;
}

.nav-dropdown-menu .nav-link {
    display: block;
    padding: 0.25rem 0;
    white-space: nowrap;
}

/* Seiten-Navigation (Weiter / Zurück) */
.page-pager {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding-top: 2rem;
    padding-bottom: 3rem;
}

.pager-link {
    font-weight: 600;
    color: var(--accent-orange);
    text-decoration: none;
    transition: color 0.2s ease;
}

.pager-link:hover {
    color: var(--accent-orange-hover);
}

/* Divider */
.section-divider {
    border: none;
    border-top: 1px solid rgba(247, 147, 26, 0.15);
    margin: 0;
}

/* Typography helpers */
.hero-eyebrow {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-orange);
    opacity: 0.8;
    display: block;
    margin-bottom: 1.5rem;
}

.section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-orange);
    opacity: 0.6;
    display: block;
    margin-bottom: 1rem;
}

.hero-title {
    font-family: 'Libre Baskerville', serif;
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 700;
    line-height: 1.15;
    color: #ffffff !important;
    margin-bottom: 1.5rem;
}

.section-heading {
    font-family: 'Libre Baskerville', serif;
    font-size: clamp(1.7rem, 3.5vw, 2.4rem);
    font-weight: 700;
    color: #fffcbb !important;
    margin-bottom: 1.5rem;
}

.section-heading--spaced {
    margin-bottom: 2rem;
}

.section-heading--tight {
    margin-bottom: 0.75rem;
}

.hero-sub {
    font-size: 1.2rem;
    color: rgba(255, 251, 235, 0.75);
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.hero-sub-muted {
    font-size: 1rem;
    color: rgba(255, 251, 235, 0.55);
    line-height: 1.7;
}

.section-intro {
    color: rgba(255, 251, 235, 0.55);
    font-size: 1rem;
    margin-bottom: 2.5rem;
}

.body-text {
    color: rgba(255, 251, 235, 0.75);
    line-height: 1.85;
    font-size: 1.05rem;
}

.body-text p + p {
    margin-top: 1rem;
}

.body-text--mb {
    margin-bottom: 2rem;
}

.microcopy {
    margin-top: 2rem;
    font-size: 0.95rem;
    color: rgba(255, 251, 235, 0.5);
    font-style: italic;
}

.text-orange {
    color: var(--accent-orange) !important;
}

/* Blockquote */
.inline-quote {
    border-left: 3px solid rgba(247, 147, 26, 0.4);
    padding-left: 1.25rem;
    margin: 2rem 0 0;
    font-style: italic;
    color: rgba(255, 251, 235, 0.6);
    font-size: 0.95rem;
}

.inline-quote footer {
    margin-top: 0.4rem;
    font-size: 0.8rem;
    font-style: normal;
    opacity: 0.5;
}

/* Intro / Pull Quote */
.intro-quote {
    text-align: center;
    font-style: italic;
    color: silver;
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
    border-left: none;
    padding-left: 0;
    font-size: 1.05rem;
    line-height: 1.7;
}

.intro-quote footer {
    margin-top: 0.6rem;
    font-size: 0.85rem;
    font-style: normal;
    opacity: 0.6;
}

/* CTA group */
.cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2.5rem;
}

.cta-group--center {
    justify-content: center;
}

.cta-body {
    color: rgba(255, 251, 235, 0.65);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

/* Benefit grid */
.benefit-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.benefit-item {
    border-left: 3px solid rgba(247, 147, 26, 0.3);
    padding: 1.25rem 1.5rem;
    background: rgba(14, 46, 14, 0.5);
    border-radius: 0 6px 6px 0;
}

.benefit-item h3 {
    color: var(--accent-orange) !important;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.benefit-item p {
    color: rgba(255, 251, 235, 0.75);
    font-size: 0.95rem;
    margin: 0;
}

/* Steps */
.steps-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.step-row {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

.step-num {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--accent-orange);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
}

.step-title {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-light) !important;
    margin-bottom: 0.3rem;
}

.step-desc {
    color: rgba(255, 251, 235, 0.65);
    font-size: 0.93rem;
    margin: 0;
}

/* Solution cards */
.solution-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.solution-card {
    background: rgba(14, 46, 14, 0.5);
    border: 1px solid rgba(247, 147, 26, 0.15);
    border-radius: 8px;
    padding: 1.75rem;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.solution-card:hover {
    border-color: rgba(247, 147, 26, 0.4);
    transform: translateY(-3px);
}

.solution-card--featured {
    border-color: rgba(247, 147, 26, 0.3);
}

.solution-card h3 {
    color: var(--accent-orange) !important;
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.solution-card .tagline {
    font-size: 0.82rem;
    color: rgba(255, 251, 235, 0.45);
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 1rem;
}

.solution-card p {
    color: rgba(255, 251, 235, 0.75);
    font-size: 0.93rem;
    margin-bottom: 1rem;
}

.solution-card .ideal {
    font-size: 0.82rem;
    color: rgba(255, 251, 235, 0.5);
    margin-bottom: 0.75rem;
}

.solution-card .section-label {
    margin-bottom: 0.5rem;
}

.ideal-label {
    color: rgba(255, 251, 235, 0.5);
    font-weight: 600;
}

/* Tipp box */
.tipp-box {
    background: rgba(247, 147, 26, 0.08);
    border-left: 4px solid var(--accent-orange);
    border-radius: 0 6px 6px 0;
    padding: 1.25rem 1.5rem;
}

.tipp-box strong {
    color: var(--accent-orange);
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.5rem;
}

.tipp-box p {
    color: rgba(255, 251, 235, 0.75);
    font-size: 0.93rem;
    margin: 0;
}

/* Footer */
.page-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    padding: 2.5rem 1rem;
    text-align: center;
}

.footer-disclaimer {
    font-size: 0.82rem;
    color: rgba(255, 251, 235, 0.35);
    line-height: 1.7;
    max-width: 560px;
    margin: 0 auto;
}

.footer-links {
    margin-top: 1.25rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.footer-link {
    font-size: 0.8rem;
    color: rgba(255, 251, 235, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        min-height: auto;
        padding: 5rem 1rem 3rem;
    }

    .full-section {
        padding: 3.5rem 1rem;
    }

    .cta-section {
        padding: 4rem 1rem;
    }
}

/* ── End One-Pager ──────────────────────────────────────────────────── */

/* Mobile: größere Touch-Flächen (nur < 768px, Desktop unberührt) */
@media (max-width: 767px) {
    /* Mobile-Menü-Links auf ~44px vergrößern */
    #mobile-menu .nav-link {
        padding-top: 0.7rem !important;
        padding-bottom: 0.7rem !important;
    }

    /* Footer-Links: von 16px auf komfortables Tap-Ziel */
    .footer-link {
        display: inline-block;
        padding: 0.4rem 0;
    }
}

/* Print styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        background: white !important;
        color: black !important;
    }
    
    a {
        text-decoration: none;
        color: #000;
    }
    
    .page-break {
        page-break-before: always;
    }
}

/* ── Utilities (zuvor über Tailwind-CDN, jetzt lokal) ───────────────── */

/* Screenreader-only + Skip-Link */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}
.focus\:not-sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}
.focus\:fixed:focus { position: fixed; }
.focus\:top-3:focus { top: 0.75rem; }
.focus\:left-3:focus { left: 0.75rem; }
.focus\:z-\[100\]:focus { z-index: 100; }

/* Abstände / Zeilenhöhe */
.mt-6 { margin-top: 1.5rem; }
.pb-4 { padding-bottom: 1rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.leading-relaxed { line-height: 1.625; }

/* Responsive (ab 768px) – muss nach den Basis-Display-Regeln stehen */
@media (min-width: 768px) {
    .md\:flex { display: flex; }
    .md\:hidden { display: none; }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* Seitlicher Kurs-Tab (vertikal, Buchrücken-Stil am linken Rand) */
.course-tab {
    position: fixed;
    left: 0;
    top: 50%;
    z-index: 40;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1.35rem 0.75rem;
    border: 1px solid rgba(247, 147, 26, 0.45);
    border-left: none;
    border-radius: 0 10px 10px 0;
    background-color: rgba(14, 46, 14, 0.92);
    color: var(--accent-orange);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-decoration: none;
    writing-mode: vertical-rl;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-50%) translateX(-100%);
    transition: transform 0.4s ease, opacity 0.4s ease, visibility 0.4s ease,
                background-color 0.2s ease, color 0.2s ease;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.course-tab.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

.course-tab:hover,
.course-tab:focus-visible {
    background-color: var(--accent-orange);
    color: #000;
}

.course-tab:focus-visible {
    outline: 2px solid var(--accent-orange);
    outline-offset: 3px;
}

/* Schrift hochkant, um 180° gedreht (Buchrücken-Stil, von unten nach oben) */
.course-tab__text {
    transform: rotate(180deg);
}

.course-tab__badge {
    writing-mode: horizontal-tb;
    background: var(--accent-orange);
    color: #000;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
}

.course-tab:hover .course-tab__badge,
.course-tab:focus-visible .course-tab__badge {
    background: #000;
    color: var(--accent-orange);
}

@media (max-width: 767px) {
    .course-tab {
        font-size: 0.72rem;
        padding: 0.75rem 0.3rem;
        gap: 0.4rem;
    }
    /* Badge ebenfalls hochkant, damit der Tab schmal bleibt und keinen Text verdeckt */
    .course-tab__badge {
        writing-mode: vertical-rl;
        font-size: 0.5rem;
        letter-spacing: 1px;
        padding: 0.3rem 0.1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .course-tab {
        transition: opacity 0.2s ease, visibility 0.2s ease;
        transform: translateY(-50%);
    }
    .course-tab.is-visible {
        transform: translateY(-50%);
    }
}

/* Panther-Badge: dezente Karte unten links, gleitet beim ersten Scrollen ein */
.panther-badge {
    position: fixed;
    left: 1rem;
    bottom: 1rem;
    z-index: 40;
    display: flex;
    align-items: center;
    max-width: 340px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    background-color: rgba(12, 14, 12, 0.92);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-120%);
    transition: transform 0.8s ease, opacity 0.8s ease, visibility 0.8s ease;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

/* Schmale Akzentlinie in den Vereinsfarben (rot/grün) am linken Rand */
.panther-badge::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #c8102e 0%, #c8102e 50%, #00753a 50%, #00753a 100%);
}

.panther-badge.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.panther-badge__link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0.5rem 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.85rem;
    line-height: 1.4;
    text-decoration: none;
}

.panther-badge__link:hover span,
.panther-badge__link:focus-visible span {
    color: #fff;
    text-decoration: underline;
}

.panther-badge__link img {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
}

.panther-badge__close {
    align-self: flex-start;
    background: none;
    border: none;
    padding: 0.35rem 0.6rem;
    color: rgba(255, 255, 255, 0.4);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
}

.panther-badge__close:hover,
.panther-badge__close:focus-visible {
    color: #fff;
}

@media (max-width: 767px) {
    .panther-badge {
        max-width: calc(100% - 2rem);
    }
}

@media (prefers-reduced-motion: reduce) {
    .panther-badge {
        transition: opacity 0.2s ease, visibility 0.2s ease;
        transform: none;
    }
    .panther-badge.is-visible {
        transform: none;
    }
}