/* =========================================
   AWS Bedrock Chat
   Lemon Fresh Theme 🍋
========================================= */

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

:root {
    /* 레몬 옐로 */
    --lemon: #ffe14d;
    --lemon-deep: #ffd21f;
    --lemon-soft: #fff4a8;
    --lemon-pale: #fffbe0;
    --lemon-cream: #fffdf0;

    /* 라임 포인트 (잎사귀) */
    --lime: #a6d62f;
    --lime-deep: #7fae12;
    --lime-soft: #eef8c9;

    --text: #2b2a14;
    --text-soft: #7a773f;
    --on-lemon: #3d3500;

    --border: #f3ecb5;
    --border-strong: #e8dc7a;

    --danger: #ff6b5e;

    --shadow: 0 10px 34px rgba(190, 160, 0, 0.14);
    --shadow-soft: 0 4px 16px rgba(190, 160, 0, 0.10);
    --glow: 0 0 0 4px rgba(255, 225, 77, 0.35);
}


/* =========================================
   전체 화면
========================================= */

body {
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        "Noto Sans KR",
        Roboto,
        sans-serif;

    background:
        radial-gradient(circle at 8% 0%, #fff08a 0, transparent 32%),
        radial-gradient(circle at 100% 100%, var(--lime-soft) 0, transparent 30%),
        var(--lemon-cream);

    background-attachment: fixed;

    min-height: 100vh;
    padding: 20px;
    color: var(--text);
}


/* =========================================
   전체 컨테이너
========================================= */

.container {
    max-width: 1120px;
    margin: 0 auto;

    background: rgba(255, 255, 255, 0.96);
    border: 2px solid var(--lemon-soft);
    border-radius: 32px;
    box-shadow: var(--shadow);
    overflow: hidden;

    /* 화면 높이를 꽉 채우는 앱 레이아웃 */
    display: flex;
    flex-direction: column;
    height: calc(100vh - 40px);
    min-height: 560px;
}


/* =========================================
   헤더 (레몬 슬라이스 장식)
========================================= */

header {
    position: relative;
    overflow: hidden;

    background: linear-gradient(135deg, var(--lemon) 0%, #fff08a 55%, var(--lemon-pale) 100%);
    color: var(--on-lemon);

    padding: 20px 32px 18px;
    text-align: left;
    flex-shrink: 0;
    border-bottom: 2px solid var(--lemon-soft);
}

/* 레몬 슬라이스 */
header::before {
    content: "";
    position: absolute;
    top: -46px;
    right: -34px;
    width: 170px;
    height: 170px;
    border-radius: 50%;

    background:
        repeating-conic-gradient(
            from 0deg,
            transparent 0deg 27deg,
            rgba(255, 255, 255, 0.85) 27deg 30deg
        ),
        radial-gradient(circle, #fffbd0 0 30%, #ffec6e 31% 100%);

    border: 8px solid #fff7b0;
    box-shadow: 0 6px 20px rgba(190, 160, 0, 0.2);
    opacity: 0.9;
}

/* 작은 레몬 슬라이스 */
header::after {
    content: "";
    position: absolute;
    bottom: -40px;
    left: -26px;
    width: 110px;
    height: 110px;
    border-radius: 50%;

    background:
        repeating-conic-gradient(
            from 15deg,
            transparent 0deg 27deg,
            rgba(255, 255, 255, 0.8) 27deg 30deg
        ),
        radial-gradient(circle, #fffbd0 0 30%, #ffe45c 31% 100%);

    border: 6px solid #fff7b0;
    opacity: 0.75;
}

header h1,
header p {
    position: relative;
    z-index: 1;
}

header h1 {
    font-family: "Jua", "Noto Sans KR", sans-serif;
    font-size: 1.9rem;
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

header p {
    color: #6b6000;
    font-size: 0.92rem;
    line-height: 1.5;
}


/* =========================================
   탭
========================================= */

.tabs {
    display: flex;
    gap: 8px;
    padding: 10px;
    background: #fff;
    border-bottom: 2px solid var(--lemon-pale);
}

.tab-button {
    flex: 1;
    padding: 14px 18px;

    background: transparent;
    border: none;
    border-radius: 999px;
    cursor: pointer;

    font-family: inherit;
    font-size: 1rem;
    font-weight: 650;
    color: var(--text-soft);

    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.tab-button:hover {
    background: var(--lemon-pale);
    color: var(--text);
}

.tab-button.active {
    background: var(--lemon);
    color: var(--on-lemon);
    box-shadow: 0 4px 12px rgba(255, 210, 31, 0.45);
}

.tab-button:active {
    transform: scale(0.97);
}


/* =========================================
   탭 내용
========================================= */

.tab-content {
    display: none;
    padding: 20px 24px;
    background: #fff;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
}

.tab-content.active {
    display: block;
}

#chat-tab.active {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}


/* =========================================
   채팅 영역
========================================= */

.chat-container {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.chat-messages {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 22px;

    background: var(--lemon-cream);
    border: 2px solid var(--border);
    border-radius: 24px;
    margin-bottom: 18px;
}

/* 시작 화면 + 예시 질문 */
.chat-welcome {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    text-align: center;
    color: var(--text-soft);
}

.chat-welcome .welcome-emoji {
    font-size: 2.6rem;
}

.chat-welcome .welcome-title {
    font-family: "Jua", "Noto Sans KR", sans-serif;
    font-size: 1.4rem;
    color: var(--text);
}

.suggestions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    max-width: 560px;
}

.suggestion-chip {
    padding: 9px 16px;
    background: #fff;
    border: 2px solid var(--border-strong);
    border-radius: 999px;
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.suggestion-chip:hover {
    background: var(--lemon);
    border-color: var(--lemon-deep);
    transform: translateY(-1px);
}

/* 복사 버튼 */
.message.assistant {
    position: relative;
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 10px;
    padding: 3px 10px;
    background: var(--lemon-pale);
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    color: var(--text-soft);
    font-size: 0.75rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease, background 0.2s ease;
}

.message.assistant:hover .copy-btn,
.copy-btn:focus-visible {
    opacity: 1;
}

.copy-btn:hover {
    background: var(--lemon);
    color: var(--on-lemon);
}

.message-content {
    white-space: pre-wrap;
}

button:disabled {
    opacity: 0.55;
    cursor: not-allowed !important;
    transform: none !important;
    box-shadow: none !important;
}

.file-label small {
    font-weight: 500;
    color: var(--text-soft);
}

.file-label.dragover {
    background: var(--lemon);
    border-style: solid;
}


/* =========================================
   채팅 메시지
========================================= */

.message {
    margin-bottom: 14px;
    padding: 14px 18px;
    border-radius: 20px;
    max-width: 78%;
    word-wrap: break-word;
    line-height: 1.65;
}

/* 사용자 메시지 */
.message.user {
    background: linear-gradient(135deg, var(--lemon) 0%, var(--lemon-deep) 100%);
    color: var(--on-lemon);
    margin-left: auto;
    border-bottom-right-radius: 6px;
    box-shadow: 0 4px 12px rgba(255, 210, 31, 0.35);
}

/* AI 메시지 */
.message.assistant {
    background: #ffffff;
    color: var(--text);
    border: 2px solid var(--border);
    box-shadow: var(--shadow-soft);
    border-bottom-left-radius: 6px;
}

.message-header {
    font-weight: 700;
    margin-bottom: 6px;
    font-size: 0.88rem;
}

.message.assistant .message-header {
    color: var(--lime-deep);
}

.message-content {
    line-height: 1.7;
}

.usage-info {
    font-size: 0.8rem;
    color: var(--text-soft);
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px dashed var(--border-strong);
}


/* =========================================
   채팅 입력창
========================================= */

.chat-input-container {
    display: flex;
    gap: 10px;
    padding: 8px;

    background: #ffffff;
    border: 2px solid var(--border-strong);
    border-radius: 999px;
    box-shadow: var(--shadow-soft);

    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.chat-input-container:focus-within {
    border-color: var(--lemon-deep);
    box-shadow: var(--glow);
}

.chat-input-container {
    align-items: flex-end;
    flex-shrink: 0;
}

.chat-input-container textarea {
    flex: 1;
    padding: 12px 18px;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.5;
    resize: none;
    max-height: 160px;
    outline: none;
    color: var(--text);
}

.chat-input-container textarea::placeholder {
    color: #b8b27a;
}


/* =========================================
   공통 버튼
========================================= */

button {
    font-family: inherit;
}

/* 채팅 전송 */
#chat-send-btn {
    padding: 12px 28px;
    background: var(--lemon);
    color: var(--on-lemon);
    border: none;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 800;
    transition: all 0.2s ease;
}

#chat-send-btn:hover {
    background: var(--lemon-deep);
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(255, 210, 31, 0.5);
}

/* 채팅 초기화 */
#chat-clear-btn {
    padding: 12px 16px;
    background: var(--lime-soft);
    color: #587a08;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 650;
    transition: all 0.2s ease;
}

#chat-clear-btn:hover {
    background: #e0f0a6;
    color: #3f5805;
}


/* =========================================
   멀티모달
========================================= */

.multimodal-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 22px;

    background: var(--lemon-cream);
    border: 2px solid var(--border);
    border-radius: 24px;
}


/* =========================================
   textarea
========================================= */

.input-section textarea {
    width: 100%;
    padding: 16px;

    border: 2px solid var(--border-strong);
    border-radius: 18px;
    background: #fff;
    color: var(--text);

    font-size: 1rem;
    font-family: inherit;
    line-height: 1.6;
    resize: vertical;
    outline: none;

    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-section textarea:focus {
    border-color: var(--lemon-deep);
    box-shadow: var(--glow);
}

.input-section textarea::placeholder {
    color: #b8b27a;
}


/* =========================================
   파일 업로드
========================================= */

.file-upload-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.file-label {
    padding: 16px;
    background: var(--lemon-pale);
    border: 2px dashed var(--lemon-deep);
    border-radius: 18px;
    cursor: pointer;
    text-align: center;
    font-weight: 650;
    color: #6b5d00;
    transition: all 0.2s ease;
}

.file-label:hover {
    background: var(--lemon-soft);
    transform: translateY(-1px);
}

.file-upload-section input[type="file"] {
    display: none;
}


/* =========================================
   이미지 미리보기
========================================= */

.image-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 4px;
}

.image-preview-item {
    position: relative;
    width: 105px;
    height: 105px;
    border-radius: 18px;
    overflow: hidden;
    border: 2px solid var(--lemon-soft);
    background: #fff;
    box-shadow: var(--shadow-soft);
}

.image-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 삭제 버튼 */
.image-preview-item .remove-btn {
    position: absolute;
    top: 7px;
    right: 7px;
    width: 26px;
    height: 26px;

    border: none;
    border-radius: 50%;
    background: rgba(61, 53, 0, 0.75);
    color: white;
    cursor: pointer;
    font-size: 14px;
    backdrop-filter: blur(5px);
    transition: all 0.2s ease;
}

.image-preview-item .remove-btn:hover {
    background: var(--danger);
    transform: scale(1.08);
}


/* =========================================
   멀티모달 버튼
========================================= */

.button-group {
    display: flex;
    gap: 10px;
}

.button-group button {
    flex: 1;
    padding: 14px;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

/* 전송 */
.button-group button:first-child {
    background: var(--lemon);
    color: var(--on-lemon);
    border: 2px solid var(--lemon);
}

.button-group button:first-child:hover {
    background: var(--lemon-deep);
    border-color: var(--lemon-deep);
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(255, 210, 31, 0.5);
}

/* 초기화 */
.button-group button:last-child {
    background: #fff;
    color: #587a08;
    border: 2px solid var(--lime-soft);
}

.button-group button:last-child:hover {
    background: var(--lime-soft);
    color: #3f5805;
}


/* =========================================
   멀티모달 결과
========================================= */

.multimodal-response {
    padding: 24px;
    background: #ffffff;
    border: 2px solid var(--border);
    border-radius: 24px;
    max-height: 520px;
    overflow-y: auto;
    line-height: 1.8;
    box-shadow: var(--shadow-soft);
}

.multimodal-response:empty,
.web-response:empty {
    display: none;
}


/* =========================================
   웹 요약
========================================= */

.web-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.web-container .input-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.web-container input[type="url"] {
    padding: 15px 18px;
    border: 2px solid var(--border-strong);
    border-radius: 999px;
    background: white;
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    color: var(--text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.web-container input[type="url"]:focus {
    border-color: var(--lemon-deep);
    box-shadow: var(--glow);
}

.web-container input[type="url"]::placeholder {
    color: #b8b27a;
}

.web-container button {
    padding: 14px 24px;
    background: var(--lemon);
    color: var(--on-lemon);
    border: none;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.2s ease;
}

.web-container button:hover {
    background: var(--lemon-deep);
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(255, 210, 31, 0.5);
}


/* =========================================
   웹 요약 결과
========================================= */

.web-response {
    padding: 24px;
    background: #ffffff;
    border: 2px solid var(--border);
    border-radius: 24px;
    line-height: 1.8;
    box-shadow: var(--shadow-soft);
}


/* =========================================
   로딩
========================================= */

.loading {
    text-align: center;
    padding: 24px;
    color: var(--text-soft);
    animation: lemon-pulse 1.4s ease-in-out infinite;
}

.message.assistant.loading {
    padding: 14px 18px;
    text-align: left;
}

@keyframes lemon-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}


/* =========================================
   오류 메시지
========================================= */

.error {
    background: #fff3ef;
    color: #b8493d;
    padding: 16px;
    border-radius: 16px;
    border: 2px solid #ffd5cc;
}


/* =========================================
   Footer
========================================= */

footer {
    background: var(--lemon-pale);
    padding: 18px;
    text-align: center;
    color: #8a8340;
    font-size: 0.85rem;
    border-top: 2px solid var(--lemon-soft);
}


/* =========================================
   스크롤바
========================================= */

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--lemon-soft);
    border-radius: 20px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--lemon-deep);
}

::selection {
    background: var(--lemon);
    color: var(--on-lemon);
}


/* =========================================
   모바일
========================================= */

@media (max-width: 768px) {

    body {
        padding: 12px;
    }

    .container {
        border-radius: 24px;
    }

    header h1 {
        font-size: 1.5rem;
    }

    header p {
        font-size: 0.82rem;
    }

    header::before {
        width: 120px;
        height: 120px;
        top: -40px;
        right: -40px;
    }

    .tabs {
        gap: 4px;
        padding: 7px;
    }

    .tab-button {
        padding: 12px 7px;
        font-size: 0.88rem;
    }

    .tab-content {
        padding: 18px;
    }

    .multimodal-container {
        grid-template-columns: 1fr;
    }

    .message {
        max-width: 90%;
    }

    .container {
        height: calc(100vh - 24px);
    }

    .chat-input-container {
        border-radius: 28px;
    }

    header {
        padding: 16px 18px 14px;
    }

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