/* ===== CSS Variables ===== */
:root {
    --primary-blue: #1a56db;
    --primary-blue-dark: #1e40af;
    --primary-blue-light: #3b82f6;
    --primary-yellow: #fbbf24;
    --primary-yellow-dark: #f59e0b;
    --primary-yellow-light: #fcd34d;
    
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --text-white: #ffffff;
    
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --bg-dark: #111827;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-full);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--text-white);
    box-shadow: 0 4px 14px rgba(26, 86, 219, 0.4);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 86, 219, 0.5);
}

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

.btn-light:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

/* ===== Back to Top Button ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(26, 86, 219, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(26, 86, 219, 0.4);
}

/* ===== Scroll Progress Bar ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--primary-blue);
    width: 0%;
    z-index: 1001;
    transition: width 0.1s ease-out;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
    height: 90px;
}

.navbar-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    z-index: -1;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    position: relative;
    z-index: 10;
    width: 140px;
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-logo img {
    height: 140px;
    width: 140px;
    border-radius: 50%;
    object-fit: cover;
    position: absolute;
    top: 20px;
    left: 0;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    background: var(--bg-white);
}

.nav-logo img:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-blue);
    background: rgba(26, 86, 219, 0.08);
}

.nav-link.active {
    color: var(--text-white);
    background: var(--primary-blue);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--bg-light) 100%);
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    margin-bottom: 24px;
    color: var(--text-dark);
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 16px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.hero-hashtag {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-yellow);
    margin-bottom: 40px;
    letter-spacing: 2px;
    text-shadow: 0 2px 10px rgba(251, 191, 36, 0.3);
}

.hero-decoration {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.6;
}

.circle-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-yellow);
    top: -100px;
    right: -100px;
    filter: blur(80px);
}

.circle-2 {
    width: 300px;
    height: 300px;
    background: var(--primary-blue-light);
    bottom: -50px;
    left: -50px;
    filter: blur(60px);
}

.circle-3 {
    width: 200px;
    height: 200px;
    background: var(--primary-yellow-light);
    top: 50%;
    left: 20%;
    filter: blur(50px);
}

/* ===== Section Titles ===== */
.section-title {
    text-align: center;
    margin-bottom: 48px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-yellow));
    margin: 16px auto 0;
    border-radius: var(--radius-full);
}

/* ===== Bento Grid ===== */
.bento-section {
    padding: 100px 0;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto;
    gap: 24px;
}

/* Diagonal Bento Layout - matching sketch */
.bento-diagonal {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    grid-template-areas:
        "lauftreff willkommen"
        "lauftreff maps"
        "treffpunkt maps";
}

.card-lauftreff {
    grid-area: lauftreff;
}

.card-willkommen {
    grid-area: willkommen;
}

.card-treffpunkt {
    grid-area: treffpunkt;
}

.card-maps {
    grid-area: maps;
}

.bento-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.bento-medium {
    grid-column: span 2;
}

.bento-small {
    grid-column: span 1;
}

.bento-wide {
    grid-column: span 4;
}

/* Card Styles */
.card-icon {
    width: 56px;
    height: 56px;
    background: rgba(26, 86, 219, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.card-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary-blue);
}

.card-icon.yellow {
    background: rgba(251, 191, 36, 0.2);
}

.card-icon.yellow svg {
    color: var(--primary-yellow-dark);
}

.bento-card h3 {
    margin-bottom: 12px;
    color: var(--text-dark);
}

.bento-card p {
    color: var(--text-light);
}

.card-highlight {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-blue) !important;
    margin-bottom: 8px;
}

.card-badge {
    display: inline-block;
    background: var(--primary-yellow);
    color: var(--text-dark);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.875rem;
    margin-top: 20px;
}

/* Accent Gradient Card */
.accent-gradient {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--text-white);
}

.accent-gradient h3,
.accent-gradient p,
.accent-gradient .card-highlight {
    color: var(--text-white) !important;
}

.accent-gradient .card-icon {
    background: rgba(255, 255, 255, 0.2);
}

.accent-gradient .card-icon svg {
    color: var(--text-white);
}

/* Glass Card */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

/* Blue Card */
.blue-card {
    background: var(--primary-blue);
    color: var(--text-white);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.blue-card p {
    color: rgba(255, 255, 255, 0.8);
}

/* Yellow Card */
.yellow-card {
    background: var(--primary-yellow);
    color: var(--text-dark);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
}

.stat-label {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.stat-text {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 8px;
}

/* Location Card */
.location-card {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.location-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-blue) !important;
}

.location-desc {
    font-size: 0.875rem;
}

/* Map Card */
.map-card {
    padding: 16px;
    background: var(--bg-white);
}

.map-card iframe {
    width: 100%;
    height: 100%;
    min-height: 300px;
    display: block;
}

/* Apple Maps Card */
.map-card-apple {
    padding: 0;
    position: relative;
    overflow: hidden;
}

#apple-map {
    width: 100%;
    height: 100%;
    min-height: 300px;
    border-radius: var(--radius-xl);
}

.map-overlay-link {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: var(--bg-white);
    padding: 12px 20px;
    border-radius: var(--radius-full);
    text-decoration: none;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 10;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.map-overlay-link span {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.875rem;
}

.map-overlay-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* Apple Maps Link Card (fallback) */
.map-card-link {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: linear-gradient(135deg, #e8f4f8 0%, #d1e8f0 50%, #c5dde8 100%);
    text-decoration: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

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

.map-card-link:hover .map-cta {
    color: var(--primary-blue-dark);
}

.map-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 2;
}

.map-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-blue);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-icon svg {
    width: 28px;
    height: 28px;
    color: var(--text-white);
}

.map-info h3 {
    color: var(--text-dark);
    margin-bottom: 4px;
}

.map-info p {
    color: var(--text-light);
    margin-bottom: 16px;
}

.map-cta {
    display: inline-block;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition);
}

.map-decoration {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 60%;
    height: 60%;
    pointer-events: none;
    z-index: 1;
}

.map-decoration::before {
    content: '';
    position: absolute;
    bottom: -20%;
    right: -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(26, 86, 219, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.map-pin {
    position: absolute;
    bottom: 30%;
    right: 25%;
    width: 40px;
    height: 40px;
    background: var(--primary-blue);
    border-radius: 50% 50% 50% 0;
    transform: rotate(-45deg);
    box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
}

.map-pin::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    background: var(--text-white);
    border-radius: 50%;
}

/* Quote Card */
.quote-card {
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.quote-card blockquote {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-white);
    font-style: italic;
    max-width: 800px;
}

.quote-card .hashtag {
    font-style: normal;
    font-weight: 800;
    color: var(--primary-yellow);
}

/* TrainTuesday Badge */
.train-tuesday-badge {
    display: inline-block;
    background: var(--primary-yellow);
    color: var(--text-dark);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.875rem;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

/* ===== Agenda Section ===== */
.agenda-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.agenda-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.agenda-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: 20px;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.agenda-card.next-event {
    border-color: var(--primary-blue);
    background: linear-gradient(135deg, rgba(26, 86, 219, 0.03) 0%, rgba(26, 86, 219, 0.08) 100%);
    position: relative;
    overflow: hidden;
}

.next-event-ribbon {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--primary-blue);
    color: white;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 14px;
    border-radius: 0 var(--radius-xl) 0 var(--radius-md);
}

.next-event-ribbon span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.agenda-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: var(--primary-blue);
    color: var(--text-white);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.agenda-date-day {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
}

.agenda-date-month {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.9;
}

.agenda-content {
    flex: 1;
}

.agenda-header {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.agenda-label {
    display: inline-block;
    background: var(--primary-yellow);
    color: var(--text-dark);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}



.agenda-content h4 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.agenda-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.agenda-detail {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.agenda-detail svg {
    color: var(--primary-blue);
    flex-shrink: 0;
}

.agenda-calendar-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 0 0 0;
    background: none;
    color: var(--primary-blue);
    border: none;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 12px;
}

.agenda-calendar-btn:hover {
    color: var(--primary-blue-dark);
}

.agenda-calendar-btn svg {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
}

.agenda-calendar-btn.downloaded {
    color: #10b981;
}

@media (max-width: 1024px) {
    .agenda-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
}

/* ===== Instagram Section ===== */
.instagram-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.125rem;
    margin-top: -32px;
    margin-bottom: 48px;
}

.instagram-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.instagram-grid .instagram-media {
    margin: 0 !important;
    min-width: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
}

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

.instagram-cta .btn {
    display: inline-flex;
    align-items: center;
}

@media (max-width: 1024px) {
    .instagram-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .instagram-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto 48px;
    }
}

/* ===== About Section ===== */
.about-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content p {
    color: var(--text-light);
    margin-bottom: 32px;
    font-size: 1.125rem;
}

.about-content .section-title {
    text-align: left;
}

.about-content .section-title::after {
    margin: 16px 0 0;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.about-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-white) 100%);    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.about-logo {
    width: 80%;
    height: auto;
    border-radius: 50%;
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 60px 0;
}

.cta-card {
    background: linear-gradient(135deg, var(--primary-yellow) 0%, var(--primary-yellow-dark) 100%);
    border-radius: var(--radius-xl);
    padding: 60px;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.cta-card h2 {
    color: var(--text-dark);
    margin-bottom: 16px;
}

.cta-card p {
    color: var(--text-dark);
    opacity: 0.8;
    margin-bottom: 32px;
    font-size: 1.125rem;
}

/* ===== Contact Section ===== */
.contact-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 48px;
}

.contact-item {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-blue);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--text-white);
}

.contact-item h4 {
    margin-bottom: 4px;
    color: var(--text-dark);
}

.contact-item p {
    color: var(--text-light);
    font-size: 0.9375rem;
}

.map-placeholder {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 40px;
    align-items: center;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo img {
    height: 60px;
    width: 60px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 12px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-yellow);
}

.footer-social {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
}

.footer-social a {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-blue);
}

.footer-social svg {
    width: 20px;
    height: 20px;
    color: var(--text-white);
}

.footer-bottom {
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* ===== Responsive Design ===== */

/* Tablet */
@media (max-width: 1024px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .bento-diagonal {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 1fr 1fr 1fr;
        grid-template-areas:
            "lauftreff willkommen"
            "lauftreff maps"
            "treffpunkt maps";
    }
    
    .bento-wide {
        grid-column: span 2;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-content .section-title {
        text-align: center;
    }
    
    .about-content .section-title::after {
        margin: 16px auto 0;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .nav-link {
        padding: 8px 14px;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    /* Navigation Mobile */
    .navbar {
        height: 70px;
    }
    
    .nav-logo {
        width: 90px;
    }
    
    .nav-logo img {
        height: 90px;
        width: 90px;
        top: 25px;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        height: 100dvh;
        width: 280px;
        background: #ffffff;
        display: flex;
        flex-direction: column;
        padding: 100px 24px 24px;
        gap: 12px;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
        transform: translateX(100%);
        visibility: hidden;
        transition: transform 0.3s ease, visibility 0.3s ease;
        z-index: 1000;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        transform: translateX(0);
        visibility: visible;
    }
    
    .nav-menu li {
        list-style: none;
        width: 100%;
    }
    
    .nav-link {
        padding: 16px 20px;
        text-align: left;
        display: block;
        border-radius: var(--radius-lg);
        background: transparent;
        color: #1a1a2e !important;
        text-decoration: none;
        font-weight: 500;
        font-size: 1rem;
        width: 100%;
    }
    
    .nav-link:hover {
        background: rgba(26, 86, 219, 0.08);
        color: #1a56db !important;
    }
    
    .nav-link.active {
        background: #1a56db;
        color: #ffffff !important;
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    /* Mobile Menu Overlay */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
        z-index: 998;
    }
    
    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    /* Hero Mobile */
    .hero {
        padding: 120px 20px 60px;
        min-height: auto;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-hashtag {
        font-size: 1.25rem;
    }
    
    /* Bento Grid Mobile */
    .bento-section {
        padding: 60px 0;
    }
    
    .bento-grid,
    .bento-diagonal {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        grid-template-areas:
            "lauftreff"
            "willkommen"
            "maps"
            "treffpunkt";
        gap: 16px;
    }
    
    .bento-card {
        padding: 24px;
    }
    
    .card-maps {
        min-height: 280px;
    }
    
    /* Section Titles Mobile */
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-title::after {
        width: 40px;
    }
    
    /* Agenda Mobile */
    .agenda-section {
        padding: 60px 0;
    }
    
    .agenda-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .agenda-card {
        padding: 20px;
        gap: 16px;
    }
    
    .agenda-date {
        width: 60px;
        height: 60px;
    }
    
    .agenda-date-day {
        font-size: 1.5rem;
    }
    
    .next-event-ribbon {
        font-size: 0.6rem;
        padding: 5px 10px;
    }
    
    /* About Mobile */
    .about-section {
        padding: 60px 0;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-content .section-title {
        text-align: center;
    }
    
    .about-content .section-title::after {
        margin: 16px auto 0;
    }
    
    .about-content p {
        text-align: center;
    }
    
    .feature-list {
        max-width: 320px;
        margin: 0 auto;
    }
    
    .image-placeholder {
        max-width: 280px;
        margin: 0 auto;
    }
    
    /* Instagram Mobile */
    .instagram-section {
        padding: 60px 0;
    }
    
    .instagram-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .section-subtitle {
        font-size: 0.9rem;
        padding: 0 20px;
    }
    
    /* CTA Mobile */
    .cta-section {
        padding: 40px 0;
    }
    
    .cta-card {
        padding: 40px 24px;
        border-radius: var(--radius-xl);
    }
    
    .cta-card h2 {
        font-size: 1.5rem;
    }
    
    .cta-card p {
        font-size: 0.95rem;
    }
    
    /* Footer Mobile */
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    
    .footer-logo img {
        margin: 0 auto 12px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    /* Back to Top Mobile */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    /* Container Padding */
    .container {
        padding: 0 16px;
    }
}

/* Extra Small Devices */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-hashtag {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .bento-card h3 {
        font-size: 1.25rem;
    }
    
    .card-lauftreff .card-highlight {
        font-size: 1.1rem;
    }
    
    .agenda-card {
        flex-direction: column;
        text-align: center;
    }
    
    .agenda-date {
        margin: 0 auto;
    }
    
    .agenda-details {
        justify-content: center;
    }
    
    .agenda-calendar-btn {
        justify-content: center;
    }
    
    .nav-logo img {
        height: 80px;
        width: 80px;
        top: 25px;
    }
    
    .nav-logo {
        width: 80px;
    }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.bento-card {
    animation: fadeInUp 0.6s ease forwards;
}

.bento-card:nth-child(1) { animation-delay: 0.1s; }
.bento-card:nth-child(2) { animation-delay: 0.2s; }
.bento-card:nth-child(3) { animation-delay: 0.3s; }
.bento-card:nth-child(4) { animation-delay: 0.4s; }
.bento-card:nth-child(5) { animation-delay: 0.5s; }
.bento-card:nth-child(6) { animation-delay: 0.6s; }

/* Scroll animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}