:root {
    --primary-color: #818cf8;
    /* Indigo 400 */
    --primary-hover: #6366f1;
    /* Indigo 500 */
    --secondary-color: #34d399;
    /* Emerald 400 */
    --background-color: #111827;
    /* Gray 900 */
    --card-background: #1f2937;
    /* Gray 800 */
    --text-main: #f3f4f6;
    /* Gray 100 */
    --text-muted: #9ca3af;
    /* Gray 400 */
    --border-color: #374151;
    /* Gray 700 */
    --input-bg: #111827;
    /* Gray 900 */
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --spacing-unit: 1rem;
    --border-radius: 0.75rem;
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.18);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-main);
    margin: 0;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
header {
    background-color: var(--card-background);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

#header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem var(--spacing-unit);
    text-align: center;
}

h3 {
    margin: 0;
    font-size: 1.75rem;
    color: var(--primary-color);
    font-weight: 700;
    letter-spacing: -0.025em;
}

/* Main Content */
#content {
    max-width: 1000px;
    margin: 3rem auto;
    padding: 0 var(--spacing-unit);
    flex: 1;
    width: 100%;
    box-sizing: border-box;
}

#content_block {
    background-color: var(--card-background);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

h2 {
    color: var(--text-main);
    margin-top: 0;
    font-size: 2rem;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
    padding-bottom: 0.5rem;
    margin-bottom: 2rem;
}

/* Calculator Form */
#jsContainer {
    width: 100% !important;
    border: none !important;
    text-align: left !important;
    margin: 0 !important;
    padding-top: 0 !important;
}

#jsContainer form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    align-items: end;
    background: #111827;
    /* Darker inner bg */
    padding: 2rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

label {
    display: block;
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

input[type="text"],
input#Nuten,
input#Pole {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 1rem;
    color: var(--text-main);
    box-sizing: border-box;
    transition: all 0.2s;
}

input[type="text"]:focus,
input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
}

select {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-main);
    font-size: 1rem;
}

input[type="submit"] {
    background-color: var(--primary-color);
    color: #111827;
    /* Dark text for contrast on bright button */
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 0.375rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s;
    height: auto;
    width: 100%;
}

input[type="submit"]:hover {
    background-color: var(--primary-hover);
}

#erweitert_einfach {
    color: var(--primary-color) !important;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1rem;
    padding: 0.5rem;
    border: 1px dashed var(--border-color);
    border-radius: 0.375rem;
}

#erweitert_einfach:hover {
    background-color: rgba(129, 140, 248, 0.1);
}

/* Results Area */
#Rasten {
    background-color: rgba(52, 211, 153, 0.1);
    /* Emerald tint */
    border-left: 4px solid var(--secondary-color);
    color: var(--text-main);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    border-radius: 0.25rem;
}

#Ergebnis {
    font-family: 'Courier New', monospace;
    font-size: 1.4rem !important;
    letter-spacing: 0.1em;
    padding: 2rem;
    background: #000000;
    color: #34d399;
    /* Matrix green text */
    border-radius: var(--border-radius);
    text-align: center;
    overflow-x: auto;
    margin-top: 2rem;
    border: 1px solid #333;
    box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.6);
}

/* Canvas Container */
#canvas_container {
    display: flex;
    justify-content: center;
    margin-top: 2.5rem;
    overflow: auto;
    padding: 1rem;
    background-color: #ffffff;
    /* White bg for correct drawing colors */
    border-radius: var(--border-radius);
}

canvas {
    max-width: 100%;
    height: auto !important;
}

/* Footer */
footer {
    background-color: var(--card-background);
    color: var(--text-muted);
    padding: 2rem 0;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

/* Utilities */
.hidden {
    display: none;
}

.clearboth {
    clear: both;
}

/* Overrides for JS injected styles */
#jsContainer ul {
    display: none;
    /* Hide language switcher completely */
}

/* Table overrides for dark mode */
#wf_tabelle table,
#special {
    color: var(--text-main) !important;
}

#wf_tabelle td {
    border-color: var(--border-color) !important;
    background-color: transparent !important;
    /* Override JS inline bg */
}

/* Striping for table since we removed inline bg */
#wf_tabelle tr:nth-child(even) td {
    background-color: rgba(255, 255, 255, 0.05) !important;
}