:root {
    --primary-color: rgb(0, 18, 42);
    --secondary-color: #6c757d;
    --background-color: linear-gradient(90deg, rgb(0, 18, 42), rgb(0, 43, 62), rgb(1, 90, 94), rgb(9, 75, 61));
    --text-color: rgb(0, 43, 62);
    --white-color: #ffffff;
    --border-radius: 8px;
    --border-radius-large: 12px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Lato', sans-serif;
    margin: 0;
    background: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    background-color: rgba(255, 255, 255, 0.25);
    max-width: 960px;
    margin: 20px auto;
    padding: 20px;
    border-radius: var(--border-radius-large);
}

h1, h2 {
    font-family: 'Montserrat', sans-serif;
    color: var(--primary-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #0a58ca;
    text-decoration: underline;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    padding-top: 0px;
    border-bottom: 1px solid #dee2e6;
}

.logo{
    height: 50px;
}

.cta-button {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #0a58ca;
    color: var(--white-color);
    text-decoration: none;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 60px 20px;
    background-color: var(--white-color);
    border-radius: var(--border-radius);
    margin-top: 30px;
    box-shadow: var(--box-shadow);
}

.hero h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.hero p {
    font-size: 1.2em;
    color: var(--secondary-color);
    max-width: 500px;
    margin: 0px auto;
}

/* Controls */
.controls-container {
    margin-top: 40px;
    padding: 20px;
    background-color: var(--white-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.controls-group {
    margin-bottom: 20px;
}

.controls-group h2 {
    font-size: 1.2em;
    margin-bottom: 15px;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

.control-btn {
    background-color: #e9ecef;
    border: none;
    padding: 12px 18px;
    margin-right: 10px;
    margin-bottom: 10px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1em;
    font-family: 'Lato', sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.control-btn.active {
    background-color: var(--primary-color);
    color: var(--white-color);
}

/* Content Display */
#content {
    margin-top: 30px;
    padding: 30px;
    background-color: var(--white-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    min-height: 200px;
}

#content h3 {
    margin-top: 0;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5em;
}

#content ol {
    padding-left: 20px;
}

ol > li::marker {
  font-weight: bold;
}

#content li {
    margin-bottom: 20px;
}

#content li img {
    max-width: 100%;
    border-radius: var(--border-radius);
    margin-top: 10px;
    border: 1px solid #dee2e6;
}

#content code {
    background-color: #e9ecef;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
}

.source-link {
    display: inline-block;
    margin-top: 20px;
    font-weight: bold;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 50px;
    padding: 30px 0;
    border-top: 1px solid #dee2e6;
    text-shadow: 0px 0px 5px rgba(0,0,0,0.2);
    color: var(--white-color);
}
.footer a {
    color: #cdeeff;
}