/* CSS 변수 설정 */
:root {
    --primary-color: #007bff;
    --primary-hover-color: #0056b3;
    --background-color: #f8f9fa;
    --box-background-color: #ffffff;
    --text-color: #333;
    --border-color: #dee2e6;
    --read-color: #28a745;
    --unread-color: #e9ecef;
    --danger-color: #dc3545;
    --selection-color: #fff3cd;
    --range-start-color: #f8d7da;
}

/* 기본 설정 */
body {
    font-family: 'Noto Sans KR', sans-serif;
    margin: 0;
    padding: 20px 10px;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

h1, h2 {
    text-align: center;
    color: var(--primary-color);
}
h1 { margin-bottom: 2rem; }
h2 { margin-bottom: 1.5rem; border-bottom: 2px solid var(--primary-color); padding-bottom: 0.5rem; }
h3 { margin: 0; }
h4 { margin: 0; }

section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: var(--box-background-color);
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

input, select, textarea {
    width: 100%;
    padding: 0.8rem;
    font-size: 1rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
    font-family: 'Noto Sans KR', sans-serif;
}

input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    vertical-align: middle;
}


.button-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.button-group.vertical {
    flex-direction: column;
}

button {
    background-color: #6c757d;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    padding: 10px 15px;
    font-size: 1em;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.1s ease;
    flex-grow: 1;
}
button:hover {
    transform: translateY(-2px);
}
button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
}
button.primary {
    background-color: var(--primary-color);
}
button.primary:hover {
    background-color: var(--primary-hover-color);
}
button.danger {
    background-color: var(--danger-color);
}
button.danger:hover {
    background-color: #c82333;
}


.page { display: none; }
.page.active { display: block; }

.auth-section {
    max-width: 400px;
    margin: 2rem auto;
}
.error-message {
    color: #dc3545;
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
    padding: 0.8rem;
    margin-bottom: 1rem;
    text-align: center;
}
.error-message:empty {
    display: none;
}
.inline-label {
    display: inline-block;
    margin-left: 0.5rem;
    font-weight: normal;
    cursor: pointer;
}
#rememberMeCheckbox {
    width: auto;
    margin-bottom: 1.5rem;
}

.remember-me-container {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    text-align: left;
}
#login-modal input[type="checkbox"] {
    margin: 0 0.5rem 0 0;
}
#login-modal .remember-me-container label {
    margin-bottom: 0;
}

#userStatus {
    text-align: right;
    margin-bottom: 1rem;
    padding: 0.5rem;
    background-color: var(--box-background-color);
    border-radius: 6px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1rem;
}
#userStatus p {
    margin: 0;
}
#userStatus button {
    width: auto;
    flex-grow: 0;
    margin: 0;
    padding: 5px 10px;
    font-size: 0.9em;
}
#userStatus .settings-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5em;
    padding: 0 5px;
    line-height: 1;
    transition: transform 0.3s ease;
}
#userStatus .settings-btn:hover {
    transform: rotate(45deg);
}

#readingBookTitle, #freeReadTitle { color: #333; border: none; }

.reading-toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 1.5rem;
    align-items: center;
}
.reading-toolbar button {
    width: 44px;
    height: 44px;
    padding: 0;
    font-size: 1.5em;
    border-radius: 50%;
    flex-shrink: 0;
    flex-grow: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
#ttsPlayBtn, #ttsPlayBtnFreeRead {
    background-color: #28a745;
}
#ttsPlayBtn:hover, #ttsPlayBtnFreeRead:hover {
    background-color: #218838;
}

.topic-display {
    background-color: #fff3cd;
    border-left: 5px solid #ffeeba;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
}
.topic-display h4 {
    margin: 0 0 0.25rem 0;
    color: #856404;
    font-size: 1.2em;
}
.topic-display span {
    font-size: 0.9em;
    color: #6c757d;
}

#verseDisplay, .verse-display-area {
    padding: 20px;
    background-color: #e9f5ff;
    border-left: 5px solid var(--primary-color);
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 1.2em;
    line-height: 1.7;
    white-space: pre-wrap;
}
.verse-display-area p {
    margin: 0 0 1rem 0;
    border-bottom: 1px dotted #cce5ff;
    padding-bottom: 1rem;
}
.verse-display-area p:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.selectable-area p, .selectable-area .verse-box {
    cursor: pointer;
}
.verse-selected {
    background-color: var(--selection-color) !important;
}
.verse-range-start {
    background-color: var(--range-start-color) !important;
}

#statsDisplay {
    margin-top: 20px;
    padding: 15px;
    background-color: var(--box-background-color);
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}
#statsDisplay p { margin: 8px 0; }
.stat-block { padding: 0.5rem 0; border-bottom: 1px solid #e9ecef; }
.stat-block:last-child { border-bottom: none; }
.goal-block { margin-top: 0.5rem; padding: 0.8rem; background-color: #fff3cd; border-left: 5px solid #ffeeba; border-radius: 4px; }
.goal-block p { margin: 0; font-weight: bold; color: #856404; }

.history-display, .progress-display {
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: #e9f5ff;
    border-radius: 8px;
}
.history-display p, .progress-display p { margin: 0; font-size: 1.1em; color: var(--primary-color); }
.progress-display h3 { margin-top: 0; margin-bottom: 0.8rem; font-size: 1.2em; color: var(--text-color); }
.progress-display .progress-bar { margin-bottom: 0.5rem; }

.last-read-display {
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: #e9f5ff;
    border-radius: 8px;
    transition: background-color 0.2s ease;
}
.last-read-display.clickable {
    cursor: pointer;
    border: 1px solid #cce5ff;
}
.last-read-display.clickable:hover {
    background-color: #dbeeff;
    border-color: var(--primary-color);
}
.last-read-display p {
    margin: 0;
    font-size: 1.1em;
    color: var(--primary-color);
}
.last-read-main-text {
    margin: 0;
    font-size: 1.1em;
    color: var(--primary-color);
}
.last-read-date {
    font-size: 0.9em;
    color: #555;
}
.last-read-cta {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.9em;
    font-weight: bold;
    color: var(--primary-hover-color);
}

.overview-controls { display: flex; gap: 10px; margin-bottom: 1.5rem; }
.overview-controls button { margin: 0; }
#overviewPage > .overview-controls > button:last-child { background-color: #6c757d; flex-grow: 0; width: auto; }
.testament-group { border: 1px solid var(--border-color); border-radius: 8px; margin-bottom: 1.5rem; padding: 0.5rem; background-color: var(--box-background-color); }
.testament-summary { padding: 1rem; cursor: pointer; list-style: none; }
.testament-summary::-webkit-details-marker { display: none; }
.testament-summary:hover { background-color: #f8f9fa; }
.testament-summary h3 { margin: 0 0 0.5rem 0; border: none; display: inline-block; }
.book-entry { border: 1px solid #e9ecef; border-radius: 6px; margin: 0.5rem; }
.book-summary { display: flex; align-items: center; padding: 0.8rem 1rem; cursor: pointer; gap: 1rem; list-style: none; }
.book-summary::-webkit-details-marker { display: none; }
.book-summary:hover { background-color: #f1f3f5; }
.book-name { font-weight: bold; flex-basis: 120px; flex-shrink: 0; }
.progress-bar { flex-grow: 1; height: 20px; background-color: var(--unread-color); border-radius: 10px; overflow: hidden; }
.progress-fill { height: 100%; background-color: var(--primary-color); transition: width 0.5s ease-in-out; }
.progress-percent { font-weight: bold; flex-basis: 50px; flex-shrink: 0; text-align: right; }

.plan-title-display {
    text-align: center;
    font-size: 1.2em;
    font-weight: bold;
    padding: 1rem;
    margin-bottom: 1.5rem;
    background-color: var(--selection-color);
    color: #856404;
    border-radius: 8px;
    border: 1px solid #ffeeba;
}

.era-group {
    border: 1px solid var(--primary-color);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    padding: 0.5rem;
    background-color: var(--box-background-color);
}
.era-summary {
    padding: 1rem;
    cursor: pointer;
    list-style: none;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--primary-color);
}
.era-summary::-webkit-details-marker { display: none; }

.book-entry > .book-grid-container {
    padding: 1rem;
    background-color: #f8f9fa;
}
.chapter-container {
    margin-bottom: 1.5rem;
}
.chapter-title {
    font-size: 1.1em;
    font-weight: bold;
    color: var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 0.8rem;
    border-bottom: 1px solid var(--border-color);
}
.chapter-grid { 
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(30px, 1fr));
    gap: 5px;
    padding: 0;
}
.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    padding: 0.5rem;
}
.book-tile {
    background-color: var(--box-background-color);
    color: var(--primary-color);
    border: 1px solid var(--border-color);
    flex-grow: 0;
}
.book-tile:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-hover-color);
}
.verse-box { width: auto; min-width: 30px; height: 30px; padding: 0 5px; line-height: 30px; font-size: 0.8em; border: 1px solid var(--border-color); border-radius: 4px; cursor: pointer; text-align: center; transition: all 0.2s; }
.verse-box.read { background-color: var(--read-color); border-color: var(--read-color); color: white; }
.verse-box.unread { background-color: var(--unread-color); }
.verse-box:hover { background-color: var(--primary-color); color: white; }
.book-checkbox { margin-right: 10px; transform: scale(1.5); }
.verse-box.selectable { border-radius: 50%; border: 2px dashed var(--border-color); }
.verse-box.selectable.selected { background-color: var(--primary-color); color: white; border-color: var(--primary-color); font-weight: bold; }
.read-status { font-size: 0.8em; font-weight: bold; color: var(--read-color); margin-left: auto; }

.free-read-controls { display: flex; align-items: center; gap: 10px; margin-bottom: 1.5rem; flex-wrap: wrap; }
.free-read-controls label { margin-bottom: 0; }
.free-read-controls input[type="number"] {
    width: 80px;
    flex-grow: 0;
    margin-bottom: 0;
}
.free-read-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 1.5rem; margin-bottom: 1.5rem; }
.free-read-nav button { flex-grow: 0; width: 100px; }
#pageIndicator { font-weight: bold; }

.free-read-subtitle {
    font-size: 1.2em;
    font-weight: bold;
    color: var(--primary-color);
    margin-top: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}
.free-read-subtitle:first-child {
    margin-top: 0;
}

#planListContainer button { width: 100%; text-align: left; margin-bottom: 10px; background-color: #f1f3f5; color: var(--text-color); }
#planListContainer button:hover { background-color: #e9ecef; }

@media screen and (max-width: 600px) {
    body { padding: 10px 5px; }
    h1 { font-size: 1.8em; }
    .button-group { flex-direction: column; }
    .book-summary { flex-wrap: wrap; }
    .book-name { flex-basis: 100%; }
}

.search-input-group {
    display: flex;
    gap: 10px;
}
.search-input-group input {
    flex-grow: 1;
    margin-bottom: 0;
}
.search-input-group button {
    flex-grow: 0;
    width: auto;
}

.search-results-container {
    margin-top: 1.5rem;
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem;
    background-color: #f8f9fa;
}
.search-results-container p {
    text-align: center;
    color: #6c757d;
    padding: 1rem;
}

.search-result-item {
    padding: 0.8rem 1rem;
    background-color: var(--box-background-color);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color 0.2s ease;
}
.search-result-item:last-child {
    border-bottom: none;
}
.search-result-item:hover {
    background-color: #e9f5ff;
}
.search-result-item p {
    margin: 0;
    text-align: left;
    color: var(--text-color);
}
.search-result-item .verse-ref {
    font-weight: bold;
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.25rem;
}
.search-result-item mark {
    background-color: #fff3cd;
    padding: 2px;
    border-radius: 3px;
}

.collapsible-card {
    background-color: var(--box-background-color);
    margin-bottom: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}
.collapsible-card summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    cursor: pointer;
    list-style: none;
}
.collapsible-card summary::-webkit-details-marker {
    display: none;
}
.collapsible-card summary:hover {
    background-color: #f8f9fa;
}
.collapsible-card .card-title {
    margin: 0;
    padding: 0;
    border: none;
    font-size: 1.25em;
}
.collapsible-card .card-content {
    padding: 1.5rem;
    padding-top: 0;
}
.collapsible-card[open] > summary {
    border-bottom: 1px solid var(--border-color);
}

.chevron {
    border: solid var(--primary-color);
    border-width: 0 3px 3px 0;
    display: inline-block;
    padding: 4px;
    transform: rotate(45deg);
    transition: transform 0.3s ease-in-out;
}
.collapsible-card[open] > summary .chevron {
    transform: rotate(-135deg);
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 100;
}

.modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    z-index: 101;
    width: 90%;
    max-width: 400px;
}

.modal-content {
    padding: 20px;
    text-align: center;
}
.modal-content label {
    text-align: left;
}

.modal-content h3 {
    margin-top: 0;
    margin-bottom: 24px;
    color: var(--primary-color);
    border: none;
}
.close-modal-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 1.5em;
    cursor: pointer;
    color: #aaa;
    padding: 0;
    line-height: 1;
}
#search-action-modal .modal-content p {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: 6px;
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 0.95em;
    border-left: 4px solid var(--border-color);
    text-align: left;
}

.picker-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 24px;
}

.picker-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.picker-group label {
    font-size: 0.9em;
    margin-bottom: 8px;
    color: #555;
}

select.picker {
    width: 100%;
    font-size: 1.2em;
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    -webkit-appearance: none;
    appearance: none;
    background-color: var(--background-color);
    text-align: center;
}

.modal-buttons {
    display: flex;
    gap: 10px;
    flex-direction: column;
}

#deletablePlanList {
    margin: 1rem 0;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 4px;
    text-align: left;
}
.deletable-plan-item {
    display: flex;
    align-items: center;
    padding: 8px;
    cursor: pointer;
}
.deletable-plan-item:hover {
    background-color: #f8f9fa;
}
.deletable-plan-item input[type="checkbox"] {
    margin-right: 10px;
}
.deletable-plan-item label {
    margin-bottom: 0;
    flex-grow: 1;
    cursor: pointer;
}


@media screen and (min-width: 480px) {
    .modal-buttons {
        flex-direction: row;
    }
}

.selection-toolbar {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-color);
    color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    z-index: 200;
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.3s ease, bottom 0.3s ease;
}
.selection-toolbar.active {
    display: flex;
    opacity: 1;
}
.selection-toolbar button {
    background-color: transparent;
    border: none;
    padding: 12px 16px;
    font-size: 0.9em;
    border-right: 1px solid #555;
}
.selection-toolbar button:last-child {
    border-right: none;
}
.selection-toolbar button:hover {
    background-color: #555;
    transform: none;
}

#meditationListContainer {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.meditation-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--box-background-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.meditation-list-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.meditation-info {
    display: flex;
    align-items: baseline;
    gap: 8px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.meditation-title {
    font-weight: bold;
    color: var(--primary-color);
    font-size: 1.1em;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.meditation-range {
    color: #6c757d;
    font-size: 0.9em;
    flex-shrink: 0;
}
.meditation-date {
    color: #888;
    font-size: 0.9em;
    flex-shrink: 0;
    margin-left: 1rem;
}

#meditationDetailContent {
    margin-bottom: 2rem;
}
#meditationDetailContent .verse-display-area {
    margin-bottom: 1.5rem;
}
#meditationDetailContent .meditation-text {
    white-space: pre-wrap;
    background-color: var(--box-background-color);
    padding: 1.5rem;
    border-radius: 8px;
}

.meditation-form #selectedVersesDisplay {
    background-color: #f8f9fa;
}

.page-header {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.page-header h2 {
    margin: 0;
    padding: 0;
    border-bottom: none;
    width: 100%;
}

.page-header button {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    flex-grow: 0;
    width: auto;
    padding: 6px 12px;
    font-size: 0.9em;
}

#meditationDetailPage .button-group {
    margin-top: 2rem;
}

#meditationDetailPage .button-group button {
    flex: 1;
}

.intro-slider-section {
    margin-bottom: 2rem;
    padding: 0;
}
.slider-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: auto;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}
.slides {
    display: flex;
    width: 100%;
}
.slide {
    flex: 0 0 100%;
    width: 100%;
    display: flex;
    align-items: center;
    background-color: var(--box-background-color);
}
.slide img {
    width: 50%;
    height: 350px;
    object-fit: cover;
}
.slide-text {
    width: 50%;
    padding: 2rem;
    box-sizing: border-box;
}
.slide-text h3 {
    font-size: 1.5em;
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 1rem;
}
.slide-text p {
    font-size: 1em;
    color: #555;
}
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.4);
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.2em;
    line-height: 20px;
    text-align: center;
    transition: background-color 0.3s ease;
    z-index: 10;
}
.slider-nav:hover {
    background-color: rgba(0, 0, 0, 0.7);
}
.slider-nav.prev {
    left: 15px;
}
.slider-nav.next {
    right: 15px;
}
.slider-dots {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.dot:hover, .dot.active {
    background-color: rgba(255, 255, 255, 1);
}

@media screen and (max-width: 768px) {
    .slide {
        flex-direction: column;
        height: auto;
    }
    .slide img, .slide-text {
        width: 100%;
        height: 250px;
    }
    .slide-text {
        padding: 1.5rem;
        height: auto;
        min-height: 180px;
    }
    .slide-text h3 { font-size: 1.3em; }
}

.site-footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    color: #6c757d;
    font-size: 0.9em;
}
.site-footer a {
    color: #6c757d;
    text-decoration: none;
}
.site-footer a:hover {
    text-decoration: underline;
}

#mainPageTitle {
    cursor: pointer;
    transition: color 0.2s ease;
}
#mainPageTitle:hover {
    color: var(--primary-hover-color);
}

#ttsSettingsBtn, #ttsSettingsBtnFreeRead {
    background-color: #6c757d;
}
#ttsSettingsBtn:hover, #ttsSettingsBtnFreeRead:hover {
    background-color: #5a6268;
}