/* Dark theme */
:root {
    --bg-color: #2c2c2c;
    --text-color: #e0e0e0;
    --card-bg: #3c3c3c;
    --card-border: #555;
    --nav-bg: #444;
    --nav-link-color: #8ab4f8;
    --nav-link-hover-bg: #8ab4f8;
    --nav-link-hover-color: #2c2c2c;
    --h-border: #555;
    --info-box-bg: #3f51b5;
    --info-box-border: #5c6bc0;
    --info-box-text: #e8eaf6;
    --info-box-error-bg: #e53935;
    --info-box-error-border: #d32f2f;
    --info-box-error-text: #f4f4f4;
    --button-bg: #64b5f6;
    --button-color: #333;
    --button-hover-bg: #42a5f5;
    --theme-button-bg: #444;
    --theme-button-color: #e0e0e0;
    --theme-button-hover-bg: #00000080;
    --data-bg: #4c4c4c;
    --data-border: #666;
    --data-first-color: #6baaff;
    --data-second-color: #ffee6b;
    --data-better-color: #a5d6a7;
    --data-worse-color: #ff6b6b;
    --form-bg: #4c4c4c;
    --form-text-color: #e0e0e0;
    --form-border: #666;
    --form-focus-border: #8ab4f8;
    --dropdown-arrow-color: #e0e0e0;
}

/* Light theme */
body.light-theme {
    --bg-color: #f4f4f4;
    --text-color: #333;
    --card-bg: #fff;
    --card-border: #ddd;
    --nav-bg: #e2e2e2;
    --nav-link-color: #007bff;
    --nav-link-hover-bg: #007bff;
    --nav-link-hover-color: #fff;
    --h-border: #eee;
    --info-box-bg: #e0f7fa;
    --info-box-border: #b2ebf2;
    --info-box-text: #006064;
    --info-box-error-bg: #e53935;
    --info-box-error-border: #d32f2f;
    --info-box-error-text: #f4f4f4;
    --button-bg: #007bff;
    --button-color: #fff;
    --button-hover-bg: #0056b3;
    --theme-button-bg: #e2e2e2;
    --theme-button-color: #e0e0e0;
    --theme-button-hover-bg: #00000080;
    --data-bg: #f5fff5;
    --data-border: #ccc;
    --data-first-color: #3333e6;
    --data-second-color: #d1ae2e;
    --data-better-color: #2e7d32;
    --data-worse-color: #cc0000;
    --form-bg: #fff;
    --form-text-color: #333;
    --form-border: #ccc;
    --form-focus-border: #007bff;
    --dropdown-arrow-color: #333;
}

body {
    font-family: Arial, sans-serif;
    margin: 20px;
    transition: background-color 0.3s, color 0.3s;
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* Main */

#app {
    min-width: 600px;
    max-width: 1600px;
    margin: 0 auto;
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

nav {
    margin-bottom: 20px;
    background-color: var(--nav-bg);
    padding: 12px;
    border-radius: 5px;
}

nav a {
    margin-right: 15px;
    text-decoration: none;
    color: var(--nav-link-color);
    font-weight: bold;
    padding: 5px 10px;
    border-radius: 4px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

nav a.router-link-active,
nav a:hover {
    background-color: var(--nav-link-hover-bg);
    color: var(--nav-link-hover-color);
}

h1, h2 {
    color: var(--text-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--h-border);
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    margin-bottom: 5px;
    padding: 5px;
    border-radius: 5px;
}

/* Header */

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--h-border);
}

.header h1 {
    margin: 0;
    padding: 0;
    border: none;
}

.theme-switcher button {
    background-color: var(--theme-button-bg);
    color: var(--theme-button-color);
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.theme-switcher {
    text-align: right;
}

.theme-switcher button:hover {
    background-color: var(--theme-button-hover-bg);
}

.theme-switcher button img {
    width: 24px;
    height: 24px;
    vertical-align: middle;
}

/* Loading */

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2em;
    color: var(--text-color);
    z-index: 9999;
    transition: opacity 0.5s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Forms */

.form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-start;
    align-items: center;
    margin-bottom: 20px;
}

.form-group {
    width: 100%;
    max-width: 250px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

/* Filters */

.text-filter,
.dropdown-list-filter {
    padding: 10px 15px;
    border: 1px solid var(--form-border);
    border-radius: 5px;
    background-color: var(--form-bg);
    color: var(--form-text-color);
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    width: 100%;
}

.text-filter::placeholder,
.dropdown-list-filter::placeholder {
    color: var(--form-text-color);
    opacity: 0.7;
}

.text-filter:focus,
.dropdown-list-filter:focus {
    outline: none;
    border-color: var(--form-focus-border);
    box-shadow: 0 0 0 3px rgba(var(--form-focus-border), 0.3);
}

.dropdown-list-filter {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--dropdown-arrow-color) 50%),
    linear-gradient(135deg, var(--dropdown-arrow-color) 50%, transparent 50%);
    background-position: calc(100% - 20px) calc(1em + 2px),
    calc(100% - 15px) calc(1em + 2px);
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
    padding-right: 35px;
}

.dropdown-list-filter::-ms-expand {
    display: none;
}

/* Info box component */

.info-box {
    background-color: var(--info-box-bg);
    border: 1px solid var(--info-box-border);
    padding: 15px;
    border-radius: 8px;
    font-style: italic;
    color: var(--info-box-text);
}

.info-box.error {
    background-color: var(--info-box-error-bg);
    border: 1px solid var(--info-box-error-border);
    color: var(--info-box-error-text);
}

.info-box p {
    margin: 0;
}

/* Atlas component */

.atlas {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: center;
    margin: 20px auto 0;
}

.atlas-item {
    cursor: pointer;
    flex-shrink: 0;
    flex-grow: 0;
    position: relative;
    overflow: hidden;
    background-color: transparent;
}

.atlas-item-sprite {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.atlas-item.gap {
    padding: 5px;
}

.atlas-item.gap .atlas-item-sprite {
    top: 5px;
    left: 5px;
}

.atlas-item.first-selected {
    background-color: var(--data-first-color);
}

.atlas-item.second-selected {
    background-color: var(--data-second-color);
}

.atlas-item.first-selected.second-selected {
    background-image: linear-gradient(to right, var(--data-first-color) 50%, var(--data-second-color) 50%);
}

/* Data container */

.data-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    gap: 10px;
    margin-top: 20px;
}

/* Data box */

.data-box {
    border: 1px solid var(--data-border);
    padding: 15px;
    background-color: var(--data-bg);
    border-radius: 5px;
}

.data-box h3 {
    margin-top: 0;
}

.data-box:nth-child(odd) h3 {
    color: var(--data-first-color);
}

.data-box:nth-child(even) h3 {
    color: var(--data-second-color);
}

.data-box p {
    white-space: pre-line;
    margin: 7px 0;
}