/**
 * Windlastrechner für Balkonkraftwerke - Custom Stylesheet
 * Version: 1.1.0
 */

/* --- General & Variables --- */
:root {
    --color-primary: #4f46e5; /* Indigo */
    --color-primary-hover: #4338ca;
    --color-text-dark: #1f2937;
    --color-text-medium: #4b5563;
    --color-text-light: #6b7280;
    --color-border: #e5e7eb;
    --color-background-light: #f9fafb;
    --color-background-white: #ffffff;
    --color-success: #16a34a;
    --color-success-light: #f0fdf4;
    --color-success-dark: #15803d;
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --border-radius: 0.75rem;
}

/* --- Base Container --- */
.windlastrechner-container {
    font-family: var(--font-family-sans);
    background-color: var(--color-background-light);
    padding: 1rem;
    color: var(--color-text-dark);
}

.windlastrechner-card {
    max-width: 56rem; /* 896px */
    margin: 2rem auto;
    /* Use a subtle radial gradient to make the card feel lighter and more refined */
    background-image: radial-gradient(circle at top left, #f7f9ff, var(--color-background-white));
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

/* --- Header & Footer --- */
.windlastrechner-header,
.windlastrechner-section,
.windlastrechner-footer {
    padding: 1.5rem 2rem;
}

/* Add a subtle bottom border to the header to visually separate it from the form */
.windlastrechner-header {
    border-bottom: 1px solid var(--color-border);
}

.windlastrechner-section {
    border-top: 1px solid var(--color-border);
}

.windlastrechner-header h1 {
    font-size: 1.875rem; /* 30px */
    font-weight: 700;
    color: var(--color-text-dark);
    margin: 0;
}

.windlastrechner-header p {
    margin-top: 0.5rem;
    color: var(--color-text-medium);
}

.windlastrechner-footer {
    text-align: center;
    font-size: 0.75rem; /* 12px */
    color: var(--color-text-light);
    border-top: 1px solid var(--color-border);
}

/* --- Form Styling --- */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.form-column h2 {
    font-size: 1.25rem; /* 20px */
    font-weight: 600;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group-inline {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem; /* 14px */
    font-weight: 500;
    color: var(--color-text-medium);
    margin-bottom: 0.25rem;
}

.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    background-color: var(--color-background-light);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.3);
}

/* --- Button --- */
.btn-submit {
    width: 100%;
    padding: 0.75rem 1rem;
    margin-top: 1rem;
    /* Give the button a gradient and rounded corners for a more modern look */
    background-image: linear-gradient(to right, var(--color-primary), var(--color-primary-hover));
    color: var(--color-background-white);
    font-weight: 600;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-image 0.2s, box-shadow 0.2s;
    font-size: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-submit:hover {
    /* Darken the gradient on hover */
    background-image: linear-gradient(to right, var(--color-primary-hover), #362f9e);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

/* --- Results Section --- */
.results-section h2 {
    font-size: 1.5rem; /* 24px */
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.results-table-wrapper {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.results-table th,
.results-table td {
    padding: 1rem;
    vertical-align: middle;
}

/* Differentiate the header cells to improve readability */
.results-table th {
    background-color: var(--color-background-light);
    border-bottom: 1px solid var(--color-border);
}

/* Fade-in animation for the results section */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.results-section.show {
    animation: fadeIn 0.6s ease;
}

/* Make tooltip icons use the primary color palette */
.tooltip-trigger {
    background-color: var(--color-primary);
    color: var(--color-background-white);
    transition: background-color 0.2s;
}

.tooltip-trigger:hover {
    background-color: var(--color-primary-hover);
}

.results-table tr:nth-child(odd) {
    background-color: var(--color-background-white);
}

.results-table tr:nth-child(even) {
    background-color: var(--color-background-light);
}

.results-table th {
    font-weight: 500;
    color: var(--color-text-medium);
    width: 40%;
}

.results-table td:nth-child(2) {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-primary);
}

.results-table td:nth-child(3) {
    color: var(--color-text-light);
}

.ballast-row {
    background-color: var(--color-success-light) !important;
}

.ballast-row th {
    color: var(--color-success-dark);
    font-weight: 700;
}

.ballast-row td:nth-child(2) {
    color: var(--color-success);
    font-size: 1.875rem;
    font-weight: 700;
}

.ballast-row td:nth-child(3) {
    color: var(--color-success-dark);
    font-weight: 500;
}

.status-message {
    margin-top: 1rem;
    font-size: 0.875rem;
}

/* --- Utility --- */
.hidden {
    display: none;
}

.tooltip-trigger {
    display: inline-block;
    width: 16px;
    height: 16px;
    line-height: 16px;
    text-align: center;
    background-color: #a0aec0; /* Ein neutrales Grau */
    color: #ffffff;
    border-radius: 50%; /* Macht das Element rund */
    font-size: 12px;
    font-weight: bold;
    cursor: help; /* Zeigt ein Hilfe-Symbol beim Überfahren */
    margin-left: 6px; /* Etwas Abstand zum Text */
    vertical-align: middle; /* Richtet das Icon mittig zum Text aus */
    transition: background-color 0.2s;
}

.tooltip-trigger:hover {
    background-color: #4a5568; /* Dunkler beim Überfahren */
}