/* --- General Setup & Variables --- */
:root { --primary-color: #0d6efd; --primary-hover: #0a58ca; --text-color: #212529; --bg-color: #ffffff; --card-bg: #f8f9fa; --border-color: #dee2e6; --nav-height: 60px; --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
body.dark-mode { --text-color: #f8f9fa; --bg-color: #212529; --card-bg: #343a40; --border-color: #495057; }
body { font-family: var(--font-family-sans); line-height: 1.6; background-color: var(--bg-color); color: var(--text-color); transition: background-color 0.3s, color 0.3s; margin: 0; padding-top: var(--nav-height); }
*, *::before, *::after { box-sizing: border-box; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
a { color: var(--primary-color); text-decoration: none; } a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.2; }

/* --- Header & Navigation --- */
.site-header { background-color: var(--bg-color); border-bottom: 1px solid var(--border-color); position: fixed; top: 0; left: 0; right: 0; height: var(--nav-height); z-index: 1000; }
.site-header .container { display: flex; justify-content: space-between; align-items: center; height: 100%; }
.logo { font-size: 1.5rem; font-weight: bold; text-decoration: none; }
.main-nav ul { margin: 0; padding: 0; list-style: none; display: flex; }
.main-nav .nav-item { position: relative; }
.main-nav .nav-link { display: block; padding: 0 1rem; line-height: var(--nav-height); text-decoration: none; color: var(--text-color); }
.main-nav .nav-link:hover { color: var(--primary-color); }
.dropdown-menu { display: none; position: absolute; top: 100%; left: 0; background-color: var(--bg-color); border: 1px solid var(--border-color); border-radius: 4px; min-width: 240px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); padding: 0.5rem 0; z-index: 1001; }
.nav-item:hover .dropdown-menu, .nav-item.focus-within .dropdown-menu { display: block; }
.dropdown-menu a { display: block; padding: 0.5rem 1rem; color: var(--text-color); text-decoration: none; white-space: nowrap; }
.dropdown-menu a:hover { background-color: var(--card-bg); }
.header-controls { display: flex; align-items: center; gap: 1rem; }
.dark-mode-toggle, .mobile-nav-toggle { cursor: pointer; background: none; border: none; font-size: 1.5rem; padding: 0.5rem; color: var(--text-color); line-height: 1; }
.mobile-nav-toggle { display: none; }

/* --- Main Content & Layout --- */
main { padding: 2rem 0; }
.page-header { padding: 2.5rem 0; text-align: center; background-color: var(--card-bg); border-bottom: 1px solid var(--border-color); margin-bottom: 2.5rem; }
.page-header h1 { margin: 0 0 0.5rem; font-size: 2.8rem; }
.page-header p { font-size: 1.2rem; color: #6c757d; max-width: 800px; margin: 0 auto; }
body.dark-mode .page-header p { color: #adb5bd; }
.content-section { background: var(--bg-color); border: 1px solid var(--border-color); border-radius: 8px; padding: 2rem; margin-bottom: 2rem; }
body.dark-mode .content-section { background-color: var(--card-bg); }
.content-section h2 { margin-top: 0; border-bottom: 2px solid var(--primary-color); padding-bottom: 0.5rem; margin-bottom: 1.5rem; font-size: 1.8rem; }
.content-section pre { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 4px; padding: 1rem; white-space: pre-wrap; word-break: break-all; font-size: 0.9rem; }
body.dark-mode .content-section pre { background: var(--bg-color); }
.breadcrumbs { margin-bottom: 2rem; font-size: 0.9rem; color: #6c757d; }
.ad-container { padding: 1rem; margin: 2.5rem 0; text-align: center; background-color: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; min-height: 100px; display: flex; align-items: center; justify-content: center; }

/* --- Tool Wrapper & Common Controls --- */
.tool-wrapper { margin-top: 2rem; }
.control-group { margin-bottom: 1.5rem; }
.control-group label { display: block; font-weight: bold; margin-bottom: 0.5rem; }
.tool-input, .tool-select, .tool-textarea { width: 100%; padding: 0.75rem; font-size: 1rem; border: 1px solid var(--border-color); border-radius: 4px; background-color: var(--bg-color); color: var(--text-color); }
.tool-textarea { min-height: 120px; resize: vertical; }
.tool-slider { width: 100%; }
.tool-button { background-color: var(--primary-color); color: white; border: none; padding: 0.6rem 1.2rem; font-size: 0.9rem; border-radius: 4px; cursor: pointer; transition: background-color 0.2s; }
.tool-button:hover { background-color: var(--primary-hover); }
.preview-area { border: 1px solid var(--border-color); border-radius: 8px; padding: 2rem; min-height: 200px; background-color: var(--card-bg); overflow-wrap: break-word; transition: background-color 0.3s, color 0.3s; }
.export-area { margin-top: 1.5rem; }
.export-area h4 { margin-bottom: 0.5rem; }
.export-area pre { background-color: var(--card-bg); border: 1px solid var(--border-color); border-radius: 4px; padding: 1rem; white-space: pre-wrap; word-break: break-all; }
.export-area code { font-family: 'SFMono-Regular', Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace; }

/* --- Tool-Specific Styles --- */
.live-preview-tool { display: grid; grid-template-columns: 300px 1fr; gap: 2rem; }
.color-controls { display: flex; align-items: center; gap: 1rem; }
.color-controls > div { display: flex; align-items: center; gap: 0.5rem; }
.font-comparison-tool .comparison-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.variable-font-tool { display: grid; grid-template-columns: 300px 1fr; gap: 2rem; }
.language-finder-tool .tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; }
.language-finder-tool .font-card { padding: 1rem; background-color: var(--card-bg); border-radius: 4px; text-align: center; font-size: 1.5rem; }
.font-pairing-tool { text-align: center; } .font-pairing-tool .pairing-preview { max-width: 800px; margin: 2rem auto; text-align: left; }
.font-pairing-tool h1 { font-size: 3rem; } .font-pairing-tool .pairing-info { display: flex; justify-content: center; gap: 2rem; margin-top: 1rem; }
.logo-tool .tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; }
.logo-tool .font-card {
    text-align: center;
    padding: 2rem 1rem;
    background-color: var(--card-bg);
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s;
}
.logo-tool .font-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}
.color-contrast-tool { max-width: 800px; margin: auto; text-align: center; }
.color-contrast-preview { padding: 2rem; border-radius: 8px; margin-bottom: 1rem; }
.color-contrast-controls { display: flex; justify-content: center; gap: 2rem; }
.color-contrast-results { margin-top: 1.5rem; font-size: 1.5rem; font-weight: bold; }
.color-contrast-results .pass { color: #198754; } .color-contrast-results .fail { color: #dc3545; }
.web-safe-tool .web-safe-font-item { display: flex; align-items: center; justify-content: space-between; padding: 1rem; border-bottom: 1px solid var(--border-color); }
.web-safe-tool .font-preview { font-size: 1.5rem; }
.accessibility-tool #charPreview { font-size: 4rem; text-align: center; letter-spacing: 0.1em; }
.accessibility-tool #hierarchyScore { font-size: 1.2rem; text-align: center; margin-top: 1rem; }

/* --- Homepage specific --- */
.search-container { margin: 1rem 0 3rem; text-align: center; }
#toolSearch { max-width: 600px; width: 100%; padding: 0.8rem 1.5rem; font-size: 1.1rem; border: 1px solid var(--border-color); border-radius: 50px; }
.category-section h2 { font-size: 2rem; margin: 2.5rem 0 1.5rem; border-bottom: 2px solid var(--primary-color); padding-bottom: 0.5rem; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }
.tool-card { display: block; background-color: var(--bg-color); border: 1px solid var(--border-color); border-radius: 8px; padding: 1.5rem; text-decoration: none; color: var(--text-color); transition: transform 0.2s, box-shadow 0.2s; }
body.dark-mode .tool-card { background-color: var(--card-bg); }
.tool-card:hover { transform: translateY(-5px); box-shadow: 0 8px 20px rgba(0,0,0,0.08); }
.tool-card h3 { margin: 0 0 0.5rem; color: var(--primary-color); }
.tool-card p { margin: 0; font-size: 0.95rem; }

/* --- Footer --- */
.site-footer { background-color: #343a40; color: #adb5bd; padding: 3rem 0; margin-top: 3rem; }
.site-footer a { color: #f8f9fa; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; }
.footer-column h4 { color: #ffffff; margin-bottom: 1rem; }
.footer-column ul { list-style: none; padding: 0; margin: 0; }
.footer-column li { margin-bottom: 0.5rem; }
.footer-bottom { border-top: 1px solid #495057; margin-top: 2rem; padding-top: 2rem; text-align: center; font-size: 0.9rem; }

/* --- Responsive Styles --- */
@media (max-width: 992px) {
    .main-nav { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--bg-color); border-bottom: 1px solid var(--border-color); max-height: calc(100vh - var(--nav-height)); overflow-y: auto; }
    .main-nav.is-active { display: block; }
    .main-nav ul { flex-direction: column; }
    .main-nav .nav-link { line-height: 3; border-bottom: 1px solid var(--border-color); }
    .main-nav .dropdown-menu { position: static; display: block; border: none; box-shadow: none; background: rgba(0,0,0,0.03); padding-left: 1rem; }
    body.dark-mode .main-nav .dropdown-menu { background: rgba(255,255,255,0.05); }
    .dropdown-menu a { padding: 0.5rem; font-size: 0.9rem; }
    .mobile-nav-toggle { display: block; }
    .live-preview-tool, .variable-font-tool { grid-template-columns: 1fr; }
    .font-comparison-tool .comparison-panels { grid-template-columns: 1fr; }
}

/* --- Font Update Tracker --- */
.font-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.font-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--card-bg);
    display: flex;
    flex-direction: column;
}

.font-card-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.font-card-header h3 {
    margin: 0;
    font-size: 1.2rem;
}

.font-card-header a {
    font-size: 0.85rem;
}

.font-preview {
    padding: 1.5rem;
    font-size: 1.2rem;
    line-height: 1.6;
    flex-grow: 1;
    overflow-wrap: break-word;
    min-height: 100px;
}

.font-card-footer {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: #6c757d;
    display: flex;
    justify-content: space-between;
    background-color: var(--bg-color);
    border-radius: 0 0 8px 8px;
}

body.dark-mode .font-card-footer {
    color: #adb5bd;
    background-color: var(--card-bg);
}

.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 4rem auto;
}

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

.error-message {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
}

/* --- Epoch Unix Converter Styles --- */
.converter-section {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr; /* Default to single column */
}

@media (min-width: 768px) {
    .converter-section {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); /* Two columns on larger screens */
    }
}

.converter-section h2 {
    grid-column: 1 / -1; /* Span across all columns */
    text-align: center;
    margin-top: 0;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.input-group, .output-group {
    display: flex;
    flex-direction: column;
}

.input-group label, .output-group label {
    display: block;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.input-group input[type="number"],
.input-group input[type="datetime-local"],
.input-group select {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin-bottom: 1rem; /* Space between input and button */
}

.input-group button, .output-group button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
    width: auto; /* Adjust width based on content */
    align-self: flex-start; /* Align button to start */
}

.input-group button:hover, .output-group button:hover {
    background-color: var(--primary-hover);
}

.output-group input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--card-bg); /* Slightly different background for output */
    color: var(--text-color);
    margin-bottom: 1rem;
    font-family: 'SFMono-Regular', Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace; /* Monospace for timestamps */
}

.output-group button {
    align-self: flex-end; /* Align copy button to end */
}

/* --- Color Converter Styles --- */
.color-converter-section {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); /* Responsive grid */
    align-items: start; /* Align items to the start of their grid area */
}

.color-converter-section h2 {
    grid-column: 1 / -1; /* Span across all columns */
    text-align: center;
    margin-top: 0;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.color-input-group, .color-output-group {
    display: flex;
    flex-direction: column;
}

.color-input-group label, .color-output-group label {
    display: block;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.color-input-group input[type="text"],
.color-output-group input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.color-input-group input[type="color"] {
    width: 100%;
    height: 40px; /* Adjust height as needed */
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0; /* Remove padding for color input */
    cursor: pointer;
}

.color-input-group input[type="text"] {
    margin-bottom: 1rem; /* Space between text input and color picker */
}

.color-output-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start; /* Align items to the start */
}

.color-output-group input[type="text"] {
    background-color: var(--card-bg); /* Slightly different background for output */
    font-family: 'SFMono-Regular', Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace; /* Monospace for color codes */
    margin-bottom: 0.5rem; /* Space between output and copy button */
}

.copy-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
    align-self: flex-end; /* Align copy button to the right */
}

.copy-btn:hover {
    background-color: var(--primary-hover);
}

#colorPreview {
    width: 100%;
    height: 150px; /* Larger preview area */
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-top: 1rem;
    background-color: #007bff; /* Default color */
}