@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@400;700;900&family=JetBrains+Mono:wght@400;500;700&family=Nanum+Myeongjo:wght@400;700;800&family=Gowun+Batang:wght@400;700&family=Single+Day&family=Gamja+Flower&family=Nanum+Gothic:wght@400;700&display=swap');

:root {
    --bg-color: #ffffff;
    --text-primary: #1a202c;
    --text-secondary: #718096;
    --text-error: #e53e3e;
    --caret-color: #3182ce;
    --ui-text: #e2e8f0;
    --card-bg: #f7fafc;
    --border-color: #e2e8f0;
    --accent-color: #0064ff; /* Toss Inspired Blue */
    --accent-light: rgba(0, 100, 255, 0.1);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-color: #111112;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --caret-color: #5865f2; /* Discord Accent */
    --ui-text: #2a2a2b;
    --card-bg: #1e1e20;
    --border-color: #2e2e31;
    --accent-color: #5865f2; 
    --accent-light: rgba(88, 101, 242, 0.15);
}

[data-theme="sepia"] {
    --bg-color: #fdf6e3;
    --text-primary: #586e75;
    --text-secondary: #839496;
    --caret-color: #586e75;
    --ui-text: #93a1a1;
    --card-bg: #eee8d5;
    --border-color: #93a1a1;
}

[data-theme="ocean"] {
    --bg-color: #ebf8ff;
    --text-primary: #2c5282;
    --text-secondary: #63b3ed;
    --caret-color: #2b6cb0;
    --ui-text: #bee3f8;
    --card-bg: #bee3f8;
    --border-color: #63b3ed;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* SEO 스크린 리더용 숨김 텍스트 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* 보안: 인쇄 및 PDF 저장 방지 */
@media print {
    body { display: none !important; }
}

/* 보안: 복사 방지 CSS */
body {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: '궁서', 'Gungsuh', 'Noto Serif KR', serif;
    height: 100vh;
    display: flex;
    justify-content: center;
    overflow: hidden;
    transition: background-color 0.3s, color 0.3s;
}

.wrapper {
    width: 100%;
    max-width: 1300px;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 3rem 4rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
}

.logo {
    font-weight: 900;
    color: var(--text-primary);
    font-size: 2.2rem;
    letter-spacing: -2px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.lang-selector {
    display: flex;
    gap: 1.2rem;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
}

.lang-selector span {
    transition: var(--transition);
    color: var(--text-secondary);
}

.lang-selector span:hover,
.lang-selector span.active {
    color: var(--text-primary);
}

.nav-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.icon-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border-radius: 8px;
}

.icon-btn svg {
    width: 24px;
    height: 24px;
}

.icon-btn:hover {
    background: var(--card-bg);
    color: var(--text-primary);
    transform: translateY(0); /* overriding button lift */
}

.nav-divider {
    color: var(--ui-text);
    cursor: default;
}

main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    position: relative;
}

.main-content {
    width: 100%;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.poem-info {
    font-size: 1.5rem;
    color: var(--text-primary);
    font-weight: 700;
    opacity: 1;
    margin-left: 2px;
}

.poem-info .divider {
    margin: 0 0.5rem;
    color: var(--text-primary);
}

.typing-container {
    width: 100%;
    position: relative;
    height: 160px;
    overflow: hidden;
    mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
}

.text-display {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 2.6rem;
    line-height: 1.5;
    color: var(--text-secondary);
    white-space: pre-wrap;
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    user-select: none;
    font-weight: 500;
    letter-spacing: -0.5px;
    position: relative;
    padding-top: 40px;
}


.sentence-line {
    margin-bottom: 0.5rem;
    transition: opacity 0.3s;
    opacity: 0.3;
}
.sentence-line.active-line {
    opacity: 1;
}

.word {
    display: inline-block;
}

.sentence-line span:not(.word) {
    position: relative;
    transition: color 0.1s;
}

.sentence-line span.correct {
    color: var(--text-primary);
}

.sentence-line span.incorrect {
    color: var(--text-error);
    text-decoration: underline;
    text-decoration-color: var(--text-error);
    text-decoration-thickness: 3px;
    text-underline-offset: 4px;
}

.sentence-line span.active::before {
    content: '';
    position: absolute;
    left: -2px;
    top: 10%;
    height: 80%;
    width: 3px;
    background-color: var(--caret-color);
    animation: blink 1s step-end infinite;
    border-radius: 2px;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

#typing-input {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0;
    color: transparent; background: transparent; caret-color: transparent;
    border: none; outline: none; pointer-events: none;
}

footer {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-bottom: 3rem;
}

.stats {
    display: flex;
    gap: 4rem;
    color: var(--text-primary);
}

.stat {
    display: flex;
    gap: 0.8rem;
    align-items: baseline;
}

.stat .label {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.stat .value {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', '궁서', monospace;
}

/* Modal Styling */
.modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(6px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    background: var(--bg-color);
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 25px 60px -12px rgba(0, 0, 0, 0.3);
    text-align: center;
    border: 1px solid var(--border-color);
    width: 600px;
    max-width: 90%;
    color: var(--text-primary);
}

.settings-content {
    max-height: 90vh;
    overflow-y: auto;
    width: 750px;
    text-align: left;
}

.settings-content::-webkit-scrollbar {
    width: 8px;
}
.settings-content::-webkit-scrollbar-thumb {
    background: var(--ui-text);
    border-radius: 10px;
}

.settings-content .modal-title,
.settings-content .modal-poem-info {
    text-align: left;
    margin-bottom: 0.5rem;
}

.settings-content .modal-poem-info {
    margin-bottom: 2rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.modal-title {
    font-size: 2.2rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.modal-poem-info {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 3rem;
}

.modal-stats {
    display: flex;
    gap: 4rem;
    justify-content: center;
    margin-bottom: 3.5rem;
}

.modal-stat {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.modal-stat .label {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-stat .value {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', '궁서', monospace;
}

/* Buttons */
.modal-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

button {
    background-color: var(--text-primary);
    color: var(--bg-color);
    border: 2px solid transparent;
    padding: 1.1rem 2.2rem;
    font-size: 1.1rem;
    font-weight: 700;
    font-family: 'Pretendard', 'Noto Serif KR', serif;
    border-radius: 14px;
    cursor: pointer;
    transition: var(--transition);
}

button:hover {
    background-color: var(--accent-color);
    color: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px -5px rgba(0,0,0,0.1);
}

button.secondary {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

button.secondary:hover {
    background-color: var(--ui-text);
    color: var(--text-primary);
}

/* Forms */
.auth-input {
    width: 100%;
    padding: 1.2rem;
    font-size: 1.3rem;
    font-family: 'JetBrains Mono', 'Pretendard', sans-serif;
    background: var(--card-bg);
    border: 2px solid transparent;
    color: var(--text-primary);
    border-radius: 14px;
    outline: none;
    text-align: center;
    letter-spacing: 6px;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.auth-input:focus {
    background: var(--bg-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--accent-light);
}

textarea {
    width: 100%;
    padding: 1.5rem;
    font-size: 1.1rem;
    font-family: 'Pretendard', sans-serif;
    background: var(--card-bg);
    color: var(--text-primary);
    border: 2px solid transparent;
    border-radius: 16px;
    resize: none;
    outline: none;
    line-height: 1.6;
    transition: var(--transition);
}

textarea:focus {
    background: var(--bg-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--accent-light);
}

/* Utility layouts for Modals */
.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    width: 100%;
    margin-bottom: 1rem;
}

/* Settings Specific Layouts */
.settings-tabs {
    display: flex;
    width: 100%;
    background: var(--card-bg);
    border-radius: 16px;
    margin-bottom: 2.5rem;
    padding: 0.5rem;
    gap: 0.5rem;
    border: 1px solid var(--border-color);
}

.settings-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 1rem 0;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 12px;
    font-family: 'Pretendard', sans-serif;
}

.settings-tab-btn:hover {
    color: var(--text-primary);
    background: var(--ui-text);
}

.settings-tab-btn.active {
    background: var(--bg-color);
    color: var(--accent-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05), 0 0 0 1px rgba(0,0,0,0.03);
}

.settings-panels {
    width: 100%;
    min-height: 250px;
}

.type-flex {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    width: 100%;
}

.type-card {
    flex: none;
    background: var(--card-bg);
    border: 2px solid transparent;
    border-radius: 20px;
    padding: 2rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    color: var(--text-primary);
}

.type-card:hover {
    background: var(--ui-text);
    transform: translateY(-4px);
}

.type-card.selected {
    background: var(--accent-light);
    border-color: var(--accent-color);
}

.type-card h3 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    font-family: 'Pretendard', sans-serif;
}

.type-preview {
    font-size: 0.95rem;
    color: var(--text-secondary);
    background: var(--bg-color);
    padding: 1.2rem;
    border-radius: 12px;
    width: 100%;
    min-height: 80px;
    line-height: 1.6;
    box-shadow: 0 2px 6px rgba(0,0,0,0.03);
    border: 1px solid var(--border-color);
}

.type-card.selected h3 {
    color: var(--accent-color);
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
}

.option-card {
    background: var(--card-bg);
    border: 2px solid transparent;
    border-radius: 16px;
    padding: 1.5rem 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.option-card:hover {
    transform: translateY(-3px);
    background: var(--ui-text);
}

.option-card.selected {
    background: var(--accent-light);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.theme-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.theme-card {
    background: var(--card-bg);
    border: 2px solid transparent;
    border-radius: 20px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Pretendard', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.theme-card:hover {
    transform: translateY(-3px);
    background: var(--ui-text);
}

.theme-card.selected {
    background: var(--accent-light);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.theme-swatch {
    width: 45px;
    height: 45px;
    border-radius: 14px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

#close-settings-modal-btn {
    background: var(--text-primary);
    color: var(--bg-color);
    border: none;
    border-radius: 16px;
    padding: 1.2rem;
    font-weight: 800;
    font-size: 1.2rem;
    margin-top: 3rem;
    transition: var(--transition);
}

#close-settings-modal-btn:hover {
    background: var(--accent-color);
    color: #fff;
    transform: translateY(-2px);
}

/* Search Modal Specific Layouts */
.search-modal-content {
    width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
}

.search-header {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    border-radius: 16px;
    padding: 0.5rem 1.5rem;
    border: 2px solid transparent;
    transition: var(--transition);
}

.search-header:focus-within {
    border-color: var(--accent-color);
    background: var(--bg-color);
    box-shadow: 0 0 0 4px var(--accent-light);
}

.search-icon {
    width: 22px;
    height: 22px;
    color: var(--text-secondary);
    margin-right: 1rem;
}

#search-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 1rem 0;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Pretendard', sans-serif;
    outline: none;
}

#search-input::placeholder {
    color: var(--text-secondary);
    font-weight: 500;
    opacity: 0.7;
}

.search-results-container {
    flex: 1;
    overflow-y: auto;
    padding-right: 5px;
    min-height: 300px;
}

.search-results-container::-webkit-scrollbar {
    width: 6px;
}
.search-results-container::-webkit-scrollbar-thumb {
    background: var(--ui-text);
    border-radius: 10px;
}

.search-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.search-result-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    text-align: left;
}

.search-result-card:hover {
    transform: translateY(-3px);
    background: var(--bg-color);
    border-color: var(--accent-color);
    box-shadow: 0 10px 20px -5px rgba(0,0,0,0.05);
}

.search-result-card .sr-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
    font-family: 'Pretendard', sans-serif;
}

.search-result-card .sr-author {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-color);
}

.search-result-card .sr-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.5rem;
}

.search-tag {
    font-size: 0.75rem;
    background: var(--ui-text);
    color: var(--text-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-weight: 700;
}

/* Existing End items and Responsiveness (merged) */
/* Existing End items and Responsiveness (merged) */
.ranking-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 350px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.ranking-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
}

.feedback-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 16px;
    margin-bottom: 1rem;
    text-align: left;
}

.feedback-item .fb-date {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.feedback-item .fb-content {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-primary);
}

/* 모바일 반응형 (Mobile Responsiveness) */
@media (max-width: 768px) {
    .wrapper { padding: 1.5rem; }
    .logo { font-size: 1.8rem; }
    .nav-links { flex-direction: column; gap: 1rem; }
    .poem-info { font-size: 1.2rem; }
    .text-display { font-size: 1.4rem; padding-top: 30px; }
    .typing-container { height: 120px; }
    .stats { gap: 2rem; }
    .modal-content { min-width: 95%; padding: 2rem; }
    .settings-content { min-width: 95%; }
    .theme-options { grid-template-columns: 1fr 1fr; }
}