/* === Global Styles & Variables === */
:root {
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --secondary-color: #6c757d;
    --background-light: #f8f9fa;
    --background-dark: #343a40;
    --text-light: #f8f9fa;
    --text-dark: #212529;
    --card-bg: #ffffff;
    --border-color: #dee2e6;
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.07);
    --card-hover-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    background-color: var(--background-light);
    color: var(--text-dark);
    line-height: 1.6;
}

/* === SHARED COMPONENTS: Header & Footer === */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background-color: var(--card-bg);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 1.8em;
    font-weight: 700;
    color: var(--primary-color);
}

.main-nav a {
    margin: 0 15px;
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.main-nav a:hover, .main-nav a.active {
    color: var(--primary-color);
}

.main-footer {
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    background-color: var(--background-dark);
    color: var(--text-light);
}


/* === HOMEPAGE-SPECIFIC STYLES === */
.hero {
    background: linear-gradient(45deg, var(--primary-color), #0056b3);
    color: var(--text-light);
    text-align: center;
    padding: 6rem 1rem;
}
.hero-content h1 { font-size: 3.5em; margin-bottom: 0.5rem; font-weight: 700; }
.hero-content p { font-size: 1.2em; max-width: 600px; margin: 0 auto; opacity: 0.9; }

.portal-container { max-width: 1200px; margin: 4rem auto; padding: 0 1rem; }
.portal-container h2 { text-align: center; font-size: 2.5em; margin-bottom: 3rem; }

.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 2.5rem; }
.tool-card { background-color: var(--card-bg); border-radius: 12px; box-shadow: var(--card-shadow); padding: 2.5rem 2rem; text-align: center; text-decoration: none; color: var(--text-dark); transition: transform 0.3s ease, box-shadow 0.3s ease; border-top: 4px solid var(--primary-color); }
.tool-card:hover { transform: translateY(-10px); box-shadow: var(--card-hover-shadow); }
.tool-icon { margin-bottom: 1.5rem; color: var(--primary-color); }
.tool-card h3 { font-size: 1.5em; margin-bottom: 0.75rem; }
.tool-card p { color: var(--secondary-color); font-size: 1em; }


/* === TOOL PAGE-SPECIFIC STYLES (NEW!) === */
.page-title {
    text-align: center;
    padding: 3rem 1rem;
    background-color: #e9ecef;
}
.page-title h1 {
    font-size: 2.8em;
    color: var(--text-dark);
    margin: 0 0 0.5rem 0;
}
.page-title p {
    font-size: 1.1em;
    color: var(--secondary-color);
    margin: 0;
}

.tool-page-container {
    display: flex;
    justify-content: center;
    padding: 3rem 1rem;
}

.tool-wrapper {
    background-color: var(--card-bg);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    max-width: 700px;
    width: 100%;
}

.tool-wrapper .seo-text {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.1em;
    color: var(--secondary-color);
}
.tool-wrapper .seo-text p { margin: 0; }

/* Form Styles for Tools */
.tool-wrapper input[type="number"],
.tool-wrapper input[type="text"],
.tool-wrapper textarea {
    width: 100%;
    padding: 12px 15px;
    font-size: 1em;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.tool-wrapper input:focus, .tool-wrapper textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

.tool-wrapper button.btn,
.tool-wrapper .btn {
    display: block;
    width: 100%;
    padding: 15px;
    font-size: 1.1em;
    font-weight: bold;
    color: #fff;
    background-color: var(--primary-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.tool-wrapper button.btn:hover, .tool-wrapper .btn:hover {
    background-color: var(--primary-hover);
}

.tool-wrapper .result-box, .tool-wrapper .result-container {
    background-color: var(--background-light);
    padding: 15px;
    border-radius: 8px;
    font-size: 1.4em;
    font-weight: bold;
    text-align: center;
    margin: 1rem 0;
    word-wrap: break-word;
}
.ad-container { margin: 25px 0; }

/* === Markdown Preview Styles (NEW!) === */
.html-preview h1, .html-preview h2, .html-preview h3 {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-top: 1.5rem;
}
.html-preview h1 { font-size: 2em; }
.html-preview h2 { font-size: 1.75em; }
.html-preview h3 { font-size: 1.5em; }
.html-preview p { margin-bottom: 1rem; }
.html-preview a { color: var(--primary-color); text-decoration: none; }
.html-preview a:hover { text-decoration: underline; }
.html-preview code {
    background-color: #e9ecef;
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: monospace;
}
.html-preview pre {
    background-color: #2d2d2d;
    color: #f8f8f2;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
}
.html-preview pre code {
    background-color: transparent;
    padding: 0;
}
.html-preview blockquote {
    border-left: 4px solid var(--border-color);
    padding-left: 1rem;
    color: var(--secondary-color);
    margin-left: 0;
}
.html-preview ul, .html-preview ol {
    padding-left: 2rem;
}
.html-preview table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}
.html-preview th, .html-preview td {
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    text-align: left;
}
.html-preview th {
    background-color: var(--background-light);
}