:root {
    --color-primary: #4a90e2; 
    --color-secondary: #f4f7f6; 
    --color-text: #333;
    --color-korean: #d1e7dd; 
    --color-ukrainian: #f8d7da; 
    --color-mic-default: #fff; 
    --color-mic-recording: #4a90e2; 
    --color-header: #37474f; 
    --header-height: 45px; 
    --input-panel-height: 90px; 
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--color-secondary);
    display: flex;
    flex-direction: column;
    color: var(--color-text);
    overflow: hidden; 
    width: 100%;
    height: 100%; 
    position: fixed; 
    top: 0;
    left: 0;
}

.header {
    background-color: var(--color-header);
    color: white;
    height: var(--header-height);
    padding: 0 15px; 
    font-size: 1.1em;
    display: flex;
    justify-content: space-between; 
    align-items: center;
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    flex-shrink: 0; 
    box-sizing: border-box; 
}

.header-mode-switch-container {
    flex-grow: 1; 
    display: flex;
    justify-content: flex-start; 
    align-items: center;
    min-height: 28px; 
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.mode-menu-container {
    position: relative; 
    display: inline-block;
    flex-shrink: 0;
}

.mode-menu-button {
    background-color: transparent;
    border: none;
    cursor: pointer;
    width: 23px; 
    height: 23px;
    padding: 0;
    background-image: url('../image/mode_switch.png'); 
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.mode-menu-button:hover {
    opacity: 1;
}

.mode-dropdown {
    position: absolute;
    top: var(--header-height); 
    left: 0; 
    background-color: var(--color-header); 
    color: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    overflow: hidden;
    z-index: 20; 
    width: 150px; 
    max-width: 150px; 
    display: none; 
    padding: 5px 0;
    box-sizing: border-box;
}

.mode-dropdown.show {
    display: block;
}

.mode-option {
    padding: 10px 15px;
    cursor: pointer;
    font-size: 0.9em;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: background-color 0.1s;
    overflow: hidden; 
    white-space: nowrap; 
    text-overflow: ellipsis; 
}

.mode-option:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.mode-option.selected {
    background-color: var(--color-primary); 
    font-weight: bold;
}

.mode-description {
    font-size: 0.8em;
    font-weight: normal;
    opacity: 0.8;
    margin-top: 2px;
}

.lang-menu-container {
    position: relative; 
    display: inline-block;
    flex-shrink: 0;
}

.lang-menu-button {
    background-color: transparent;
    border: none;
    cursor: pointer;
    width: 28px; 
    height: 28px;
    padding: 0;
    background-image: url('../image/settings.png'); 
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.lang-menu-button:hover {
    opacity: 1;
}

.lang-dropdown {
    position: absolute;
    top: var(--header-height);
    right: 0; 
    background-color: var(--color-header); 
    color: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    overflow: hidden;
    z-index: 20; 
    min-width: 120px;
    display: none; 
    padding: 5px 0;
}

.lang-dropdown.show {
    display: block;
}

.lang-option {
    padding: 10px 15px;
    cursor: pointer;
    font-size: 0.9em;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.1s;
    white-space: nowrap;
}

.lang-option:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.lang-option.selected {
    background-color: var(--color-primary); 
    font-weight: bold;
}

.chat-container {
    height: calc(100% - var(--header-height) - var(--input-panel-height));
    overflow-y: auto;
    padding: 20px 15px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
}

.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 18px;
    line-height: 1.5;
    word-wrap: break-word; 
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    position: relative;
    display: flex;
    flex-direction: column; 
}

.korean-user {
    align-self: flex-start;
    background-color: var(--color-korean);
    border-bottom-left-radius: 4px;
}

.ukrainian-user {
    align-self: flex-end;
    background-color: var(--color-ukrainian);
    border-bottom-right-radius: 4px;
}
 
.translation-wrapper {
    display: flex;
    align-items: flex-start;
    margin-bottom: 8px; 
    padding-bottom: 5px;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.15); 
}
 
.system-translation {
    font-size: 1em; 
    color: var(--color-header); 
    font-style: normal;
    font-weight: 500;
    flex-grow: 1;
    padding-right: 5px;
    min-height: 1.5em; 
    cursor: pointer; /* ✅ 수정: 포인터 커서 추가 */
}

/* ✅ 수정: 로딩/에러 상태일 때는 포인터 커서를 기본 커서로 되돌림 */
.system-translation.is-loading,
.system-translation.translation-error {
    font-style: normal;
    font-weight: bold;
    cursor: default;
}

/* ✅ 수정: 예시 메시지의 번역 텍스트는 포인터 커서를 보여주지 않음 */
.message:has([data-example="true"]) .system-translation {
    cursor: default;
}
 
.original-text.is-live-text {
    font-style: normal; 
    font-weight: normal; 
    color: var(--color-header); 
}

.original-text {
    font-size: 0.85em;
    color: #555;
    font-style: normal; 
    min-height: 1.5em;
    outline: none; 
    cursor: default; 
    padding: 1px 0;
    transition: background-color 0.1s, border 0.1s, box-shadow 0.1s;
    border: none;
    font-weight: normal; 
    color: var(--color-header); 
    position: relative; 
    box-sizing: border-box; 
}

.original-text[contenteditable="false"] {
    cursor: pointer;
}

.original-text[data-example="true"], 
.original-text.is-live-text {
    cursor: default !important;
}

.original-text[contenteditable="true"]:focus {
    background-color: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--color-header);
    padding: 0 25px 0 5px; 
    border-radius: 4px;
    box-shadow: 0 0 0 1px var(--color-header);
    cursor: text;
}
 
.speaker-button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-primary);
    padding: 0;
    margin-left: 5px;
    flex-shrink: 0;
    line-height: 1;
    transform: translateY(-2px); 
    width: 24px; 
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8; 
    transition: opacity 0.1s;
}

.speaker-button:hover:not(:disabled) {
    opacity: 1;
}
 
.speaker-button img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.translation-error {
    color: #c0392b;
    font-weight: 500;
    font-style: normal;
}
 
.input-panel {
    display: flex;
    padding: 10px 0; 
    background-color: rgba(55, 71, 79, 0.9); 
    border-top: none; 
    flex-shrink: 0; 
    height: var(--input-panel-height);
    box-sizing: border-box; 
    padding-bottom: calc(10px + env(safe-area-inset-bottom)); 
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.1);
    position: relative; 
    z-index: 5; 
}

.input-box {
    flex: 1;
    display: flex;
    flex-direction: column; 
    align-items: center;
    justify-content: flex-start; 
    padding: 0 10px; 
    min-height: calc(var(--input-panel-height) - 20px - env(safe-area-inset-bottom));
    position: relative; 
}
 
.input-box:first-child {
    border-right: 1px solid rgba(255, 255, 255, 0.2); 
}
 
.mic-button {
    flex-grow: 1; 
    width: 100%; 
    height: 100%; 
    padding: 5px; 
    margin: 0;
    border: none; 
    border-radius: 4px; 
    background-color: var(--color-header); 
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: white; 
    cursor: pointer;
    display: flex;
    flex-direction: row; 
    align-items: center;
    justify-content: center; 
    gap: 8px; 
    line-height: 1.2;
    position: relative; 
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transition: background-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.mic-button:hover:not(.recording) {
    background-color: rgba(255, 255, 255, 0.1); 
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4); 
    transform: translateY(-2px); 
}
 
.mic-title {
    font-size: 1.1em; 
    font-weight: 500;
    color: white;
    flex-shrink: 0;
    margin-bottom: 0; 
}
 
.mic-icon {
    font-size: 1.5em; 
    margin: 0; 
    line-height: 1;
    flex-shrink: 0;
}

.mic-icon img {
    width: 1.5em; 
    height: 1.5em;
    object-fit: contain;
    transition: opacity 0.3s;
}

.mic-button.recording .mic-icon img {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}
 
.mic-button.recording {
    background-color: rgba(55, 71, 79, 0.7); 
    color: white; 
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2) inset; 
    transform: translateY(1px); 
    animation: none; 
}
 
.input-box h3, .status-text {
    display: none; 
}

.mic-button.is-recognition-disabled:hover {
    transform: none !important; 
    box-shadow: none !important;
    opacity: inherit !important; 
    cursor: default;
}

@media (max-width: 600px) and (orientation: portrait) {
    :root {
        --header-height: 50px; 
        --input-panel-height: 80px; 
    }
    .input-panel {
        height: var(--input-panel-height);
        padding-bottom: calc(10px + env(safe-area-inset-bottom));
    }
    .mic-icon {
        font-size: 1.3em; 
    }
    .mic-icon img {
        width: 1.3em; 
        height: 1.3em;
    }
    .mic-button {
        gap: 5px; 
    }
}
 
.clear-text-button {
    position: absolute;
    top: 50%; 
    right: 5px; 
    transform: translateY(-50%); 
    width: 18px; 
    height: 18px; 
    line-height: 1;
    padding: 0;
    background-color: rgba(0, 0, 0, 0.1); 
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1em; 
    font-weight: 300;
    display: none; 
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    transition: opacity 0.1s, background-color 0.1s;
    z-index: 2; 
}
 
.clear-text-button:hover {
    opacity: 1;
    background-color: rgba(0, 0, 0, 0.2);
}