/* =========================================
   DESIGN TOKENS
========================================= */
:root {
    /* Colours */
    --color-bg: #ebe9e8;
    --color-text: #4d4d4d;
    --color-heading: #000000;
    --color-surface: #ffffff;
    --color-primary: #373151;
    --color-primary-alt: #370103;
    --color-border-dark: #625a75;
    --color-line: #bfbfbf;
    --color-accent: #ffcc00;
    --color-light: #ffffff;
    --color-icon: #d9d2bf;

    /* Typography */
    --font-family: National, Arial, Helvetica, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.9rem;
    --font-size-h1: 2rem;
    --font-size-h2: 1.75rem;
    --font-size-h3: 1.25rem;
    --line-height: 1.4;
    --line-height-tight: 1.1;

    /* Layout */
    --max-width: 1140px;
    --app-header-width:450px;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-xxl: 8rem;

    /* Borders */
    --border-thin: 1px solid;
}

/* =========================================
   RESET
========================================= */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* =========================================
   BASE
========================================= */
html,
body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-family);
    font-optical-sizing: auto;
    font-size: var(--font-size-base);
    font-weight: 400;
    line-height: var(--line-height);
    -webkit-font-smoothing: antialiased;
}

p {
    margin: 1.25rem 0;
}

p:last-of-type {
    margin: 1.25rem 0 0;
}

ul {
    margin: var(--space-sm);
}

/* =========================================
   HEADINGS
========================================= */
h1 {
    font-size: var(--font-size-h1);
    font-weight: 600;
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-sm);
}

h2 {
    color: var(--color-heading);
    font-size: var(--font-size-h2);
    font-weight: 600;
    line-height: var(--line-height-tight);
    margin: 0 0 var(--space-lg);
}

h3 {
    color: var(--color-heading);
    font-size: var(--font-size-h3);
    font-weight: 600;
    line-height: var(--line-height-tight);
    margin: 0 0 var(--space-xs);
}

footer h3 {
    color: var(--color-light);
}

h3 a {
    text-decoration: none;
}

/* =========================================
   LINKS
========================================= */
nav a,
footer a {
    color: var(--color-light);
}

/* =========================================
   NAVIGATION
========================================= */
label[for="menu-toggle"],
#menu-toggle {
    display: none;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--color-primary);
    border-bottom: 1px solid var(--color-border-dark);
    color: var(--color-light);
    padding: var(--space-sm) var(--space-xl);
}

#app-header {
    display: flex;
    align-items: center;
    justify-content: center;
    column-gap: var(--space-xs);
    font-size: 32px;
    text-decoration: none;
    max-width: var(--app-header-width);
}

#app-header svg {
    width: 54px;
}

.nav-links {
    display: flex;
    column-gap: 1.25rem;
}

/* =========================================
   HERO / HEADER
========================================= */
header {
    display: flex;
    background: var(--color-primary);
    color: var(--color-light);
    margin-bottom: var(--space-xl);
}

header #intro {
    display: grid;
    grid-template-columns:1fr 100px;
    column-gap: var(--space-xl);
    color: var(--color-bg);
    max-width: var(--max-width);
    width: 100%;
    margin: auto;
    padding: var(--space-lg);
}

header #intro img,
header #intro svg {
    display: block;
    width: 100%;
}

header #intro svg {
    fill: var(--color-icon);
}

/* =========================================
   MAIN LAYOUT
========================================= */
main {
    margin: var(--space-sm) auto 3rem;
    padding: 0 12rem;
}

section {
    max-width: var(--max-width);
    margin: 0 auto var(--space-xxl);
    padding: 0 var(--space-lg);
}

footer {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    background: var(--color-primary);
    color: var(--color-light);
    line-height: 1.8;
    padding: var(--space-xl) 12rem;
}

/* =========================================
   SEARCH
========================================= */
#search-form {
    display: flex;
    font-size: 120%;
    margin: var(--space-sm) 0;
}

#search-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: var(--border-thin);
    font: inherit;
}

#search-form [type="submit"] {
    background: var(--color-accent);
    border: var(--border-thin);
    font: inherit;
    padding: 0 var(--space-md);
}

header #search-input,
header #search-form [type="submit"] {
    border: unset;
}

.result-filter{
	text-align:center;
}

.result-filter button{
	background: var(--color-accent);
    border: var(--border-thin);
	font: inherit;
	margin-bottom:1rem;
    padding:0.5rem var(--space-md);
}

/* =========================================
   CONTENT LISTS / CARDS
========================================= */
#intro,
#list {
    max-width: var(--max-width);
    margin: auto;
}

#intro {
    margin: var(--space-lg) auto;
}

#list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: var(--space-lg);
}

.card {
    background: var(--color-surface);
	margin-bottom:2rem;
    padding: var(--space-md) var(--space-lg);
}

.card div {
    background: var(--color-surface);
}

/* =========================================
   SECTION DIVIDERS
========================================= */
#list h2,
.results-group h2 {
    background-image: linear-gradient(
        var(--color-line),
        var(--color-line)
    );
    background-repeat: no-repeat;
    background-size: 100% 1px;
    background-position: 0 51%;
    grid-column: 1 / -1;
    text-align: center;
}

#list h2 span,
.results-group h2 span {
    background: var(--color-bg);
    padding: 0 var(--space-sm);
}

/* =========================================
   RESULTS
========================================= */
.results-total,
.results-group {
    margin: 0 auto var(--space-lg);
}

.results-total {
    text-align: center;
}

.results-group-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-sm);
}

.result-strip {
    display: block;
}

.result-strip:hover {
    background: var(--color-accent);
}

/* =========================================
   DROPDOWN
========================================= */
.library-dropdown {
    position: relative;
    display: inline-block;
}

.library-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 280px;
    background: var(--color-primary-alt);
    z-index: 1000;
}

.library-dropdown-content a {
    display: block;
    padding: 0.75rem var(--space-sm);
    text-decoration: none;
    white-space: nowrap;
}

.library-dropdown:hover .library-dropdown-content,
.library-dropdown:focus-within .library-dropdown-content {
    display: block;
}

/* =========================================
   GRID HELPERS
========================================= */
.grid {
    display: grid;
    grid-template-columns: 4fr 2fr;
    gap: var(--space-lg);
}

.grid div:last-of-type {
    border-left: 1px solid;
    padding-left: var(--space-lg);
}

/* =========================================
   GRID HELPERS
========================================= */

#search-depth-slider{
	background:#fff;
	border:1px solid #bfbfbf;
	margin-bottom:1rem;
	padding:1rem 1.5rem 1.25rem;
}

.depth-slider-wrap {
  display: grid;
  grid-template-rows: auto auto;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap:0.75rem;  
}

.depth-label--left {
  grid-row: 1;
  grid-column: 1;
}

.depth-range {
	border:1px solid #bfbfbf;
  grid-row: 2;
grid-column: 1 / -1;
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height:0.75rem;
  border-radius: 2px;
  background: #ddd;
  outline: none;
  cursor: pointer;
}

.depth-label--right {
  grid-row: 1;
  grid-column: 3;
}

.depth-current {
  grid-row: 1;
  grid-column: 1 / -1;
  font-size: 0.8rem;
  font-weight: 600;
  text-align: center;
}

.depth-range::-webkit-slider-thumb {
  -webkit-appearance:none;
  appearance:none;
 box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
  width:2rem;
  height:2rem;
  border-radius:50%;
  background:#373151;
  cursor: pointer;
}

.depth-range::-moz-range-thumb {
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);width:2rem;
  height:2rem;
  border-radius: 50%;
  background:#373151;
  cursor:pointer;
  border:none;
}


.mapping{
	display: grid;
	gap:2rem;
	grid-template-columns:repeat(4,1fr);
}

/* =========================================
   RESPONSIVE
========================================= */
@media (max-width: 1280px) {
    main {
        padding: 0 6rem;
    }
	header #intro {
	 padding: var(--space-lg) var(--space-xl);
}
}

@media (max-width: 1140px) {
    main {
        padding: 0 var(--space-lg);
    }

	 nav {
        display: block;
        text-align: center;
        padding: 0.75rem var(--space-sm);
    }


    #app-header {		
        margin: auto;
		margin-bottom:0.5rem;
    }
	
header #intro {
	 padding: var(--space-lg) var(--space-xl);
}

    .nav-links {
         justify-content: center;
		column-gap: var(--space-sm);
    }

    #list,
    .results-group-items {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
	footer{
		
		padding:var(--space-lg);
	}
}

@media (max-width: 900px) {
    body {
        font-size: var(--font-size-sm);
    }

   

	#app-header svg{
		width:36px;
	}

    .nav-links {
        justify-content: center;
        margin-top: 0.75rem;
    }

    header #intro {
        display: block;
		padding: var(--space-lg) ;
    }

    header #intro img,
    header #intro svg {
        display: none;
    }

    main {
        padding: 0 ;
    }
	
	footer{
		grid-template-columns: 1fr;
		padding:var(--space-lg);
		text-align:center
	}
	
	.card {
		margin:0;
		padding: var(--space-lg);
	}
	
	.grid {    
		grid-template-columns: 1fr;
		gap: var(--space-lg);
	}
	
	.grid div:last-of-type {
    border-left:unset;
    padding-left:0;
}
}


@media (max-width:650px) {
	
#app-header {
		font-size:20px;
        margin: auto;
    }
	#app-header svg{
		width:32px;
	}
}