.hidden {
    display: none;
}


header {
    background-color: var(--bg-navbar);
    height: 64px;
    padding: 0;
    margin: 0;
    width: 100%;
}

.navbar {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
    margin: 0;
    background-color: var(--bg-navbar);
    height: 64px;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 500;
    width: 100%;
}

#logo {
    display: flex;
    align-items: center;
    color: var(--text-navbar);
    font-size: 18px;
    font-weight: 700;
    white-space: nowrap;
}

nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 2rem;
}

nav a {
    color: var(--text-nav-link);
    text-decoration: none;
    white-space: nowrap;
}

nav a:hover {
    color: var(--text-nav-hover);
}

nav a.active {
    color: var(--text-nav-hover);
    border-bottom: 2px solid white;
}

#settings {
    margin-left: auto;
    display: flex;
    align-items: center;
    color: var(--text-navbar);
    white-space: nowrap;
    background-color: transparent;
    border: none;
    cursor: pointer;
    font-size: 15px;
}

#settings:hover {
    color: #c4c5c7;
}

#menu {
    display: none;
    background: none;
    border: none;
    padding: 0;
    margin: 0;
}

#mobile-menu-sidebar {
    display: none;
}

#mobile-menu-sidebar.hidden {
    display: none !important;
}

#settings-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--settings-bg);
    color: var(--settings-text);
    padding: 1.25rem;
    width: min(560px, calc(100vw - 2rem));
    max-height: calc(100vh - 2rem);
    overflow-y: auto;
    border-radius: 12px;
    border: 1px solid var(--settings-border);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
    z-index: 200;
}

#settings-container h2 {
    margin: 0 0 0.4rem;
    font-size: 1.35rem;
}

#settings-container p {
    margin: 0 0 1rem;
    color: var(--settings-muted-text);
}

.settings-section {
    margin: 0;
    padding: 0.85rem 0;
    border: 0;
    border-top: 1px solid var(--settings-border);
}

.settings-section legend {
    padding: 0 0.25rem 0 0;
    font-size: 1rem;
    font-weight: 700;
    color: var(--settings-text);
}

.settings-control-row {
    margin-top: 0.65rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem;
}

.settings-choice-group {
    margin-top: 0.65rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
}

.settings-choice-group label {
    margin-right: 0.75rem;
}

.settings-color-grid {
    margin-top: 0.65rem;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.55rem;
}

.settings-color-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.settings-color-item label {
    font-size: 0.9rem;
}

#settings-cards-per-load {
    width: 80px;
    padding: 0.35rem 0.45rem;
    border-radius: 4px;
    border: 1px solid var(--settings-input-border);
    background-color: var(--settings-input-bg);
    color: var(--settings-text);
}

#settings-container input[type="range"] {
    accent-color: var(--settings-focus);
}

#settings-container input[type="color"] {
    width: 100%;
    min-height: 2rem;
    border: 1px solid var(--settings-input-border);
    border-radius: 6px;
    background-color: var(--settings-input-bg);
}

#settings-container input,
#settings-container button,
#settings-container label {
    color: var(--settings-text);
}

#settings-container input:focus-visible,
#settings-container button:focus-visible {
    outline: 2px solid var(--settings-focus);
    outline-offset: 2px;
}


#close-settings {
    position: absolute;
    top: 0.85rem;
    right: 0.85rem;
    background: transparent;
    border: 1px solid var(--settings-border);
    border-radius: 6px;
    width: 2rem;
    height: 2rem;
    color: var(--settings-text);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
}

#close-settings:hover {
    background-color: var(--settings-section-bg);
}

@media screen and (max-width: 540px) {
    .settings-color-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media screen and (max-width: 768px) {
    nav {
        display: none;
    }

    #settings {
        display: none;
    }

    #logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        font-size: 18px;
    }

    #menu {
        display: flex;
        align-items: center;
        font-size: 28px;
        color: white;
        cursor: pointer;
    }

    #menu:hover {
        color: #E5E7EB;
    }

    #menu.active {
        color: #E5E7EB;
    }

    #mobile-menu-sidebar {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 64px;
        left: 0;
        width: 220px;
        height: calc(100vh - 64px);
        background-color: var(--bg-navbar);
        padding: 1rem;
        gap: 0.75rem;
        z-index: 100;
        overflow-y: auto;
    }

    #mobile-menu-sidebar a {
        color: var(--text-nav-link);
        text-decoration: none;
        font-size: 16px;
        font-weight: 500;
        white-space: nowrap;
    }

    #mobile-menu-sidebar a:hover {
        color: var(--text-nav-hover);
    }

    #settings-container {
        width: calc(100vw - 1.25rem);
        max-height: calc(100vh - 1.25rem);
        padding: 1rem;
    }
}