:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --primary-blue: #0056b3;
    /* Changed to white to remove "off-white" look */
    --light-gray: #ffffff;
    --border-color: #dee2e6;
    --success-color: #28a745;
    --error-color: #dc3545;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.simple-header {
    text-align: center;
    padding: 40px 20px;
    border-bottom: 1px solid var(--border-color);
    background-color: #fff;
    /* Pure white */
    margin-bottom: 2rem;
}

.simple-header h1 {
    margin: 0 0 10px 0;
    font-size: 2.5rem;
    color: #000;
}

.simple-header p {
    margin: 0;
    color: #666;
}

/* Sections */
.content-block {
    margin-bottom: 3rem;
    background: white;
}

h2 {
    font-size: 1.5rem;
    border-bottom: 2px solid var(--primary-blue);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
    color: #000;
}

.instruction {
    font-style: italic;
    color: #666;
    margin-bottom: 1rem;
}

/* Accordions */
.qa-item {
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    border-radius: 4px;
    overflow: hidden;
    background-color: #fff;
}

.qa-item summary {
    background-color: #fff;
    /* Pure white */
    padding: 1rem;
    cursor: pointer;
    font-weight: 600;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: left;
    border-bottom: 1px solid transparent;
    /* Hide border when closed */
    transition: border-color 0.2s;
}

/* Show border when open to separate from content */
.qa-item[open] summary {
    border-bottom-color: var(--border-color);
}

.qa-item summary::-webkit-details-marker {
    display: none;
}

.qa-item summary::after {
    content: '+';
    font-size: 1.2rem;
    color: var(--primary-blue);
}

.qa-item[open]>summary::after {
    content: '-';
}

.answer {
    padding: 1rem;
    background-color: white;
    /* Pure white */
    text-align: left;
    /* Explicitly left aligned */
}

.answer p {
    margin-bottom: 0.8rem;
}

.answer p:last-child {
    margin-bottom: 0;
}

/* Nested Accordions */
.sub-qa {
    margin-top: 1rem;
    margin-left: 20px;
    margin-bottom: 0;
    border: 1px solid var(--border-color);
    /* Ensure border visibility */
    background-color: #fff;
}

.sub-qa summary {
    background-color: #fff;
    border-bottom: 1px solid transparent;
    font-size: 0.95rem;
    color: #555;
    padding: 0.8rem;
}

.sub-qa[open] summary {
    border-bottom-color: var(--border-color);
}

.sub-qa summary::after {
    font-size: 1rem;
    color: #777;
}

.sub-qa .answer {
    background-color: #fff;
    /* Pure white */
    font-size: 0.95rem;
    text-align: left;
    /* Explicitly left aligned */
}

/* Game Navigation */
.game-nav {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.game-tab {
    background: none;
    border: none;
    font-size: 1rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    color: var(--text-color);
    border-radius: 4px;
}

.game-tab.active {
    background-color: var(--primary-blue);
    color: white;
}

.game-view {
    display: none;
    padding: 10px 0;
}

.game-view.active {
    display: block;
}

/* Simple list for library */
.verse-item {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.verse-ref {
    display: block;
    font-weight: bold;
    color: var(--primary-blue);
    margin-bottom: 0.25rem;
}

/* Game Controls */
.controls-row {
    margin-top: 1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.simple-select {
    padding: 8px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    min-width: 200px;
}

.simple-btn {
    padding: 8px 16px;
    font-size: 1rem;
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    background-color: #f8f9fa;
    /* Slight grey specifically for buttons is usually expected/ok, but can make white if needed */
    border: 1px solid #ccc;
    /* Add border for visibility if white */
}

.simple-btn.primary {
    background-color: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.simple-btn.secondary {
    background-color: white;
    border-color: #ccc;
}

/* Game Areas */
.play-area-simple {
    background-color: #fff;
    /* White */
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 4px;
    min-height: 100px;
}

.word-pool-simple,
.sentence-builder-simple {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.word-pool-simple {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #ddd;
}

.word-chip {
    background: white;
    border: 1px solid #999;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
}

.word-chip:hover {
    background-color: #f0f0f0;
}

.large-text-area {
    font-size: 1.2rem;
    line-height: 2;
}

.blank-input {
    border: none;
    border-bottom: 2px solid #999;
    background: transparent;
    text-align: center;
    width: 100px;
    font-size: 1.1rem;
    color: var(--primary-blue);
}

.blank-input.correct {
    border-bottom-color: var(--success-color);
    color: var(--success-color);
}

.blank-input.incorrect {
    border-bottom-color: var(--error-color);
}

/* Draggable List */
.simple-list {
    list-style: none;
    padding: 0;
}

.simple-list li {
    background: white;
    border: 1px solid var(--border-color);
    padding: 10px;
    margin-bottom: 8px;
    cursor: grab;
    display: flex;
    align-items: center;
    text-align: left;
}

.drag-handle {
    margin-right: 15px;
    color: #999;
    font-size: 1.5rem;
}

.draggable-item {
    display: flex;
    align-items: center;
    width: 100%;
}

.drv-content strong {
    display: block;
    color: var(--primary-blue);
}

.simple-feedback {
    font-weight: bold;
}

.simple-feedback.success {
    color: var(--success-color);
}

.simple-feedback.error {
    color: var(--error-color);
}

.resource-link {
    margin-top: 2rem;
    text-align: center;
}

.resource-link a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: bold;
}

.resource-link a:hover {
    text-decoration: underline;
}