:root {
    --black: #000000;
    --white: #ffffff;
    --red: #ff0000;
    --blue: #0066cc;
    --gray-light: #f5f5f5;
    --gray-medium: #cccccc;
    --gray-bg: #cecece;
    --gray-dark: #333333;
    --yellow-lime: #efff03;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Liberation Sans', 'Arimo', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-weight: 400;
    line-height: 1.4;
    color: var(--black);
    background-color: var(--gray-bg);
    font-size: 16px;
}

a{
    color: var(--blue);
}

/* Reset dl and dt margin and paddings */
dl, dt {
    margin: 0;
    padding: 0;
}

/* Header and Navigation */

tr#header th {
    padding: 0.5rem;
    text-align: left;
    border-bottom: 2px solid var(--black);
    background-color: var(--gray-light);
}

tr#header th p {
    margin-bottom: 0;
}

tr#header th#nav_right p {
    max-width: 100%;
    text-align: right;
}

tr#divider{
    display: none;
}

tr#header th p a#LOGO {
    text-decoration: none;
    color: var(--black);
    text-transform: uppercase;
}

tr#header th p a:hover {
    color: var(--red);
}

tr#header th p a{
    text-decoration: none;
    color: var(--black);
}

/* Header and Navigation end */

/* TR content */
tr.content {
    background-color: var(--gray-bg);
}

/* Reset main table */
#MAINTABLE {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0;
}

/* Typography hierarchy */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 4rem;
    font-weight: 900;
    text-transform: uppercase;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
}

h3 {
    font-size: 1.75rem;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    max-width: 65ch;
}

hr{
    display: none;
}

/* Grid system */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.grid-item {
    grid-column: span 12;
}

.grid-item--half {
    grid-column: span 6;
}

.grid-item--third {
    grid-column: span 4;
}

/* Contrasting sections */
.section--black {
    background-color: var(--black);
    color: var(--white);
    padding: 4rem 0;
}

.section--red {
    background-color: var(--red);
    color: var(--white);
    padding: 4rem 0;
}

.section--gray {
    background-color: var(--gray-light);
    color: var(--black);
    padding: 4rem 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 1rem;
    background-color: var(--black);
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 2px solid var(--black);
    transition: all 0.2s ease;
}

.btn:hover {
    background-color: var(--white);
    color: var(--black);
}

.btn--red {
    background-color: var(--red);
    border-color: var(--red);
}

.btn--red:hover {
    background-color: var(--white);
    color: var(--red);
}

/* Geometric elements */
.block {
    background-color: var(--black);
    padding: 3rem;
    margin: 2rem 0;
}

.block--red {
    background-color: var(--red);
}

.block--outline {
    background-color: transparent;
    border: 3px solid var(--black);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-variant-numeric: tabular-nums;
}

th, td {
    padding: 1rem;
    /* text-align: left; */
    border-bottom: 2px solid var(--gray-medium);
}

th {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Forms */
input, textarea {
    padding: 0.5rem;
    border: 2px solid var(--gray-dark);
    background-color: var(--white);
    font-family: inherit;
    font-size: 1rem;
    margin-bottom: 1rem;
}

select {
    padding: 0.5rem;
    border: 2px solid var(--gray-dark);
    background-color: var(--white);
    font-family: inherit;
    font-size: 1rem;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--black);
}

/* Forms end */

/* Mobile menu */
button#button-open-menu{
    font-size: 1.2em;
    background-color: transparent;
    border: 2px solid var(--black);
    color: var(--black);
    padding: 0.5rem 1rem;
    cursor: pointer;
}

#button-close-container {
    text-align: right;
    margin: 0.5rem;
}

#button-close-menu {
    /* position: absolute;
    top: 0;
    right: 0;
    font-size: 1.5em;
    background-color: transparent;
    border: none;
    color: white; */
    display: block;
    text-align: right;
}

dialog#menu {
    text-align: center;
    margin: auto;
    padding: 1rem;
    /* width: 100%;
    height: 100%; */
    background-color: rgba(0, 0, 0, 0.5);
}
dialog#menu a {
    font-size: 1.5em;
    color: white;
    text-decoration: none;
}
/* Mobile menu end */

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .grid-item--half,
    .grid-item--third {
        grid-column: span 1;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    nav ul {
        gap: 1.5rem;
    }
}