:root{
    --color-primary: #1193d4;
    --color-secondary: #1373ab;
    --color-background: #101c22;
    --color-background-secondary: #101a25;
    --color-background-accent: #18232d;
    --color-background-border: #1e2d36;
    --color-text: #ffffff;
    --color-text-secondary: #b0b8c1;
}

body {
    background-color: var(--color-background);
    color: var(--color-text);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
}


header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 30px;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-background-border);
}

.header-icon {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo-link {
    display: inline-block;
    text-decoration: none;
    color: inherit;
}

.header-logo-link img { display: block; }

/* Make nav centered between header children */
/* nav will take automatic horizontal margin to stay centered */
nav {
    margin: 0 auto;
}

/* Ensure header-icon doesn't grow and push nav */
.header-icon {
    flex: 0 0 auto;
}

nav a {
    color: var(--color-text);
    text-decoration: none;
    margin: 0 10px;
}

nav a:hover {
    color: var(--color-primary);
}


button {
    background-color: var(--color-primary);
    color: var(--color-text);
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
}

button a {
    color: var(--color-text);
    text-decoration: none;
}

button:hover {
    background-color: var(--color-secondary);
}


main {
    padding: 20px;
    text-align: center;
    background-color: var(--color-background);
}

/* Responsive chart container: height controlled via CSS, canvas fills it */
.chart-container {
    margin: 16px auto;
    max-width: 1100px;
    width: calc(100% - 40px);
    /* Height: min 260px, prefer 45vh, max 600px */
    height: clamp(260px, 45vh, 600px);
    background: transparent;
    display: block;
    box-sizing: border-box;
}
.chart-container canvas {
    width: 100% !important; /* let canvas match container width */
    height: 100% !important; /* let canvas match container height */
    display: block;
}

.image-hero {
    margin: 20px auto;
    padding: 20px;
    max-width: 1100px;
    border-radius: 10px;
    position: relative;
}

.image-hero .hero-image {
    width: 100%;
    height: clamp(300px, 50vh, 500px);
    object-fit: cover;
    object-position: center;
    border-radius: 10px;
    display: block;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);

}

.image-hero .overlay {
    position: absolute;
    top: 10.5rem;
    left: 2rem;
    max-width: 55%;
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-align: left;
    color: var(--color-text);
    pointer-events: none;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.7);
}
.image-hero .overlay h1{
    margin: 0;
    font-size: clamp(1.25rem, 3.2vw, 2.5rem);
}

.image-hero .overlay .subtitle {
    margin: 0px;
    font-size: 1.2rem;
    opacity: 0.95;
}


.image-hero .overlay-buttons {
    position: absolute;
    left: 2rem;
    bottom: 2rem;
    display: flex;
    gap: 12px;
    pointer-events: auto;
    z-index: 5;
}

.btn {
    display: inline-block;
    padding: 10px 14px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 600;
}
.btn-primary { background: var(--color-primary); }
.btn-secondary {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.08);
}

/* Hamburger-Button (standard versteckt) */
.hamburger {
    display: none;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-size: 1.6rem;
    cursor: pointer;
}

/* Side-Menu (von links einfahrend) */
.side-menu {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px; /* feste Breite wie gewünscht */
    transform: translateX(-100%);
    transition: transform 260ms ease;
    background-color: var(--color-background-secondary);
    padding: 20px;
    z-index: 1200;
    box-shadow: 6px 0 20px rgba(0,0,0,0.5);
}
.side-menu.open {
    transform: translateX(0);
}
.side-menu-close {
    background: transparent;
    color: var(--color-text);
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    margin-bottom: 10px;
}

/* Backdrop um Klicks außerhalb zu erkennen */
.menu-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    opacity: 0;
    transition: opacity 260ms ease;
    z-index: 1100;
    pointer-events: none;
}
.menu-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}

.cards {
    display: flex;
    gap: 20px;
    align-items: stretch;
    justify-content: space-between;
    margin: 20px auto;
    max-width: 1100px;
    padding: 0 20px;
    box-sizing: border-box;
}

.card {
    flex: 1 1 0;
    min-width: 220px; /* verhindert zu starke Schrumpfung */
    background: var(--color-background-accent);
    border-radius: 10px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: stretch;
}

.card-title {
    margin: 0;
    font-size: 1.15rem;
    color: var(--color-text);
}

.card-body {
    margin: 0;
    color: var(--color-text);
    flex: 1 1 auto;
    line-height: 1.4;
    font-size: 0.98rem;
}

.card-text {
    font-size: 0.7rem;
    color: var(--color-text-secondary)
}

.card-cta {
    align-self: start;
    text-decoration: none;
}

.card-image {
    object-position: center;
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    display: block;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background-color: var(--color-background-accent);
    border-radius: 8px;
    overflow: hidden;
}

.split-tables {
    display:flex;
    gap: 16px;
    align-items: flex-start;
    justify-content: center;
    width: 100%;
    box-sizing: border-box;
    overflow-x: auto;
    padding: 0 12px;
    margin-top: 16px;
}

.split-table {
    flex: 0 0 auto;
    min-width: 320px
}

.split-table.left { min-width: 420px; }
.split-table.right { min-width: 360px; }

.split-table table {
    border-collapse: collapse;
    width: 100%;
    background: var(--color-background-accent);
    border-radius: 8px;
    overflow: hidden;
}
.split-table th, .split-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--color-background-border);
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    text-align: left;
}
.split-table thead th {
    background: rgba(255,255,255,0.02);
    color: var(--color-text);
}


.options-section {
    margin: 20px auto;
    max-width: 1100px;
    text-align: center;
}

/* Checkbox group (custom look) */
.cb-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
}
.hidden-cb {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}
.cb {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    color: var(--color-text);
}
.cb::before {
    content: '';
    width: 20px;
    height: 20px;
    border-radius: 6px;
    border: 2px solid rgba(255,255,255,0.12);
    display: inline-block;
    box-sizing: border-box;
    background: transparent;
}
.hidden-cb:checked + .cb::before {
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}
.hidden-cb:focus + .cb {
    outline: 3px solid rgba(17,147,212,0.14);
    outline-offset: 3px;
}

footer {
    margin-top: 40px;
    padding: 20px;
    background-color: var(--color-background);
    border-top: 1px solid var(--color-background-border);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

footer a {
    color: var(--color-text-secondary);
    text-decoration: none;
}

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

footer nav a {
    margin: 0 8px;
}

@media (max-width: 850px) {

    nav { display: none; }
    .hamburger { display: inline-flex; }

    .image-hero img {height: 300px;}
    .image-hero .overlay {
        width: calc(100% - 40px);
        left: 20px;
        right: 20px;
        align-items: center;
        text-align: center;
    }
    .image-hero .overlay h1 {font-size: 1.8rem;}
    .image-hero .overlay .subtitle {font-size: 1rem;}
    .image-hero .overlay-buttons {
        left: 50%;
        transform: translate3d(-50%);
        bottom: 12px;
        gap: 12px;
        flex-direction: row;
    }

    .cards {
        flex-direction: column;
        gap: 20px;
        padding: 0 10px;
    }
    .card { min-width: auto; }

    .split-tables { flex-direction: column; }
    .split-table { min-width: 0; width: 100%; }
}