/* --- 기본 & 폰트 설정 --- */
:root {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --text-color: #e0e0e0;
    --text-secondary-color: #a0a0a0;
    --border-color: #333;
}
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Pretendard', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    min-height: 100vh;
}
.container {
    width: 100%;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
/* --- 상단 컨트롤 패널 --- */
.controls-panel {
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
h1 {
    text-align: center;
    font-size: clamp(1.6rem, 5vw, 2rem);
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 1rem;
    white-space: nowrap;
}
.control-group { display: flex; flex-direction: column; gap: 0.5rem; }
.control-group label { font-weight: 600; color: var(--text-secondary-color); }
/* --- 입력창 & 버튼 공통 스타일 --- */
input[type="text"], textarea, button, .file-upload-btn {
    width: 100%; padding: 0.8rem 1rem; font-size: 1rem; font-family: inherit;
    border-radius: 8px; border: 1px solid var(--border-color);
    background-color: #2a2a2a; color: var(--text-color);
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out, background-color 0.2s ease-in-out;
}
input[type="text"]:focus, textarea:focus {
    outline: none; border-color: #48c6ef; box-shadow: 0 0 0 3px rgba(72, 198, 239, 0.3);
}
textarea { resize: vertical; min-height: 80px; }
/* 파일 업로드 관련 스타일 */
.file-upload-btn { display: inline-block; text-align: center; cursor: pointer; background-color: #3a3a3a; }
.file-upload-btn:hover { background-color: #4a4a4a; }
#file-name { font-size: 0.9rem; color: var(--text-secondary-color); margin-top: 0.5rem; }
.recommendation-text {
    font-size: 0.8rem; color: var(--text-secondary-color); text-align: left; margin-top: 0.75rem;
}
/* 버튼 스타일 (그라데이션) */
button {
    color: #ffffff; font-weight: bold; border: none; cursor: pointer;
    background-image: linear-gradient(to right, #48c6ef 0%, #6f86d6 51%, #48c6ef 100%);
    background-size: 200% auto;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out, background-position 0.4s ease-in-out;
}
button:hover { background-position: right center; }
/* --- 하단 미리보기 영역 --- */
.preview-area { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
#quote-canvas { width: 100%; height: auto; background-color: #000000; border-radius: 8px; border: 1px solid var(--border-color); }
.hidden { display: none; }

/* --- 푸터 및 언어 선택 메뉴 스타일 --- */
.footer {
    width: 100%; max-width: 800px; display: flex; justify-content: center;
    margin-top: 2rem; padding: 10px 0;
}
.language-switcher { position: relative; }
.globe-icon { font-size: 24px; cursor: pointer; padding: 5px; }
.language-list {
    list-style: none; position: absolute; bottom: 100%; left: 50%;
    transform: translateX(-50%); background-color: rgba(30, 30, 30, 0.7);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-color); border-radius: 8px;
    padding: 5px; margin-bottom: 10px; width: 120px;
    box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.3);
    opacity: 0; visibility: hidden; transition: opacity 0.2s, visibility 0.2s;
}
.language-list.show { opacity: 1; visibility: visible; }
.language-list li a {
    display: block; padding: 8px 12px; color: var(--text-color);
    text-decoration: none; border-radius: 4px;
}
.language-list li a:hover { background-color: rgba(58, 58, 58, 0.8); }

/* --- 고급 설정 스타일 --- */
.advanced-settings {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: -0.5rem;
}
.advanced-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 0.2rem 1rem 0.2rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary-color);
}
.toggle-icon {
    transition: transform 0.3s ease-in-out;
}
.advanced-settings.expanded .toggle-icon {
    transform: rotate(90deg);
}
.advanced-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s ease-in-out;
}
.advanced-settings.expanded .advanced-content {
    grid-template-rows: 1fr;
}
.advanced-content-inner {
    overflow: hidden;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem; /* 그룹 간 간격 */
}
.setting-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.setting-label {
    font-weight: 600;
    color: var(--text-color);
}
.align-control {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.align-buttons {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}
.align-buttons button {
    background: none;
    border: none;
    padding: 0.4rem 0.6rem;
    cursor: pointer;
    color: var(--text-secondary-color);
    transition: background-color 0.2s, color 0.2s;
}
.align-buttons button:not(:last-child) {
    border-right: 1px solid var(--border-color);
}
.align-buttons button:hover {
    background-color: #3a3a3a;
}
.align-buttons button.active {
    background-color: #4a90e2;
    color: #ffffff;
}
.align-buttons svg {
    display: block;
}