/* ===========================
   큐어템바이오 - 블랙 & 레드 테마
   =========================== */

/* 루트 변수 */
:root {
    /* 블랙 & 레드 컬러 팔레트 */
    --black-primary: #000000;
    --black-secondary: #0a0a0a;
    --dark-red: #1a0000;
    --dark-red-2: #2b0000;
    --dark-red-3: #330000;
    --red-primary: #DC143C;
    --red-accent: #FF0000;
    --red-glow: #ff0033;
    
    /* 텍스트 컬러 */
    --white-primary: #FFFFFF;
    --white-secondary: #E5E5E5;
    --gray-light: #CCCCCC;
    --gray-medium: #999999;
    
    /* 그라디언트 */
    --gradient-black-red: linear-gradient(135deg, #000000 0%, #1a0000 50%, #2b0000 100%);
    --gradient-red-black: linear-gradient(135deg, #DC143C 0%, #330000 100%);
    --gradient-red-glow: linear-gradient(135deg, #FF0000 0%, #DC143C 100%);
    
    /* 그림자 & 효과 */
    --shadow-red: 0 4px 20px rgba(220, 20, 60, 0.3);
    --shadow-red-lg: 0 8px 30px rgba(220, 20, 60, 0.4);
    --glow-red: 0 0 20px rgba(255, 0, 51, 0.5);
    --glow-red-strong: 0 0 30px rgba(255, 0, 51, 0.8);
    
    /* 간격 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* 폰트 */
    --font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: var(--gradient-black-red);
    color: var(--white-secondary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 배경 애니메이션 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(220, 20, 60, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 0, 0, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.app-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    padding-bottom: 80px;
}

/* ===========================
   헤더 & 네비게이션
   =========================== */

header {
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--red-primary);
    padding: var(--spacing-lg) var(--spacing-lg);
    position: relative;
    z-index: 100;
    box-shadow: var(--shadow-red);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-container-center {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    text-align: center;
}

.logo {
    height: 150px;
    width: auto;
    max-width: 700px;
    filter: drop-shadow(var(--glow-red));
    transition: transform 0.3s ease;
    display: block;
    margin: 0 auto;
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(var(--glow-red-strong));
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white-primary);
    text-shadow: var(--glow-red);
    letter-spacing: 1px;
}

/* ===========================
   타이포그래피
   =========================== */

h1, h2, h3, h4, h5, h6 {
    color: var(--white-primary);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2rem;
    background: var(--gradient-red-glow);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: var(--glow-red);
}

h2 {
    font-size: 1.75rem;
    color: var(--red-accent);
    text-shadow: 0 2px 10px rgba(255, 0, 0, 0.3);
}

h3 {
    font-size: 1.5rem;
}

p {
    color: var(--white-secondary);
    margin-bottom: var(--spacing-md);
}

.text-red {
    color: var(--red-primary);
    font-weight: 600;
}

.text-white {
    color: var(--white-primary);
}

.text-highlight {
    color: var(--red-accent);
    font-weight: 700;
    text-shadow: var(--glow-red);
}

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

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-red-glow);
    color: var(--white-primary);
    box-shadow: var(--shadow-red);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-red-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: transparent;
    color: var(--red-primary);
    border: 2px solid var(--red-primary);
}

.btn-secondary:hover {
    background: var(--red-primary);
    color: var(--white-primary);
    box-shadow: var(--glow-red);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.125rem;
}

/* 펄스 애니메이션 */
@keyframes pulse-red {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(220, 20, 60, 0.7);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(220, 20, 60, 0);
    }
}

.btn-pulse {
    animation: pulse-red 2s infinite;
}

/* ===========================
   카드
   =========================== */

.card {
    background: rgba(10, 10, 10, 0.9);
    border: 2px solid var(--dark-red-3);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-red);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-red-glow);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover {
    border-color: var(--red-primary);
    box-shadow: var(--shadow-red-lg);
    transform: translateY(-4px);
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--dark-red-3);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white-primary);
    margin: 0;
    line-height: 1.3;
}

.card-body {
    color: var(--white-secondary);
    line-height: 1.5;
}

.card-body p {
    margin-bottom: var(--spacing-sm);
}

.card-body ul,
.card-body ol {
    margin-bottom: var(--spacing-sm);
    padding-left: 20px;
}

.card-body li {
    margin-bottom: var(--spacing-xs);
}

/* 레드 액센트 카드 */
.card-red-accent {
    border-left: 4px solid var(--red-accent);
}

/* ===========================
   페이지 섹션
   =========================== */

.page {
    display: none;
    padding: var(--spacing-lg) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
    animation: fadeIn 0.4s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.page-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    color: var(--gray-light);
    font-size: 1.125rem;
}

/* ===========================
   폼 요소
   =========================== */

.form-group {
    margin-bottom: var(--spacing-lg);
}

label {
    display: block;
    font-weight: 600;
    color: var(--white-primary);
    margin-bottom: var(--spacing-sm);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--dark-red-3);
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--white-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--red-primary);
    box-shadow: var(--glow-red);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

/* ===========================
   프로그레스 바
   =========================== */

.progress-container {
    margin: var(--spacing-md) 0;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    color: var(--white-secondary);
}

.progress-bar-bg {
    height: 24px;
    background: rgba(0, 0, 0, 0.8);
    border: 1px solid var(--dark-red-3);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-red-glow);
    border-radius: 12px;
    transition: width 0.6s ease;
    box-shadow: var(--glow-red);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 8px;
    color: var(--white-primary);
    font-weight: 700;
    font-size: 0.875rem;
}

/* ===========================
   그리드 레이아웃
   =========================== */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

/* ===========================
   아이콘
   =========================== */

.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-red-glow);
    color: var(--white-primary);
    font-size: 1.5rem;
    box-shadow: var(--shadow-red);
}

.icon-large {
    width: 64px;
    height: 64px;
    font-size: 2rem;
}

/* ===========================
   하단 네비게이션
   =========================== */

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(10px);
    border-top: 2px solid var(--red-primary);
    padding: var(--spacing-sm) 0;
    z-index: 100;
    box-shadow: 0 -4px 20px rgba(220, 20, 60, 0.3);
}

.nav-items {
    display: flex;
    justify-content: space-around;
    align-items: center;
    max-width: 600px;
    margin: 0 auto;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-sm);
    color: var(--gray-medium);
    text-decoration: none;
    font-size: 0.75rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.nav-item i {
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.nav-item.active {
    color: var(--red-accent);
}

.nav-item.active i {
    color: var(--red-accent);
    text-shadow: var(--glow-red);
    transform: scale(1.1);
}

.nav-item:hover {
    color: var(--white-primary);
}

/* ===========================
   챗봇 버튼
   =========================== */

.chatbot-button {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-red-glow);
    color: var(--white-primary);
    border: none;
    font-size: 1.75rem;
    cursor: pointer;
    box-shadow: var(--shadow-red-lg);
    z-index: 99;
    transition: all 0.3s ease;
    animation: pulse-red 2s infinite;
}

.chatbot-button:hover {
    transform: scale(1.1);
    box-shadow: var(--glow-red-strong);
}

.chatbot-container {
    display: none;
    position: fixed;
    bottom: 160px;
    right: 20px;
    width: 320px;
    max-width: calc(100vw - 40px);
    height: 480px;
    max-height: calc(100vh - 200px);
    background: rgba(10, 10, 10, 0.98);
    border: 2px solid var(--red-primary);
    border-radius: 16px;
    box-shadow: var(--shadow-red-lg);
    z-index: 99;
    flex-direction: column;
}

.chatbot-container.active {
    display: flex;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chatbot-header {
    padding: var(--spacing-md);
    background: var(--gradient-red-glow);
    color: var(--white-primary);
    border-radius: 14px 14px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.chat-message {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 12px;
    max-width: 80%;
}

.chat-message.bot {
    background: rgba(220, 20, 60, 0.2);
    border: 1px solid var(--red-primary);
    color: var(--white-secondary);
    align-self: flex-start;
}

.chat-message.user {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--gray-medium);
    color: var(--white-primary);
    align-self: flex-end;
    margin-left: auto;
}

.chatbot-input-container {
    padding: var(--spacing-md);
    border-top: 1px solid var(--dark-red-3);
    display: flex;
    gap: var(--spacing-sm);
}

.chatbot-input {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid var(--dark-red-3);
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--white-primary);
}

.chatbot-send {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-red-glow);
    color: var(--white-primary);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

/* ===========================
   카메라 & 이미지
   =========================== */

.camera-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    aspect-ratio: 4 / 5;
    margin: var(--spacing-lg) auto;
    border-radius: 16px;
    overflow: hidden;
    border: 3px solid var(--red-primary);
    box-shadow: var(--shadow-red-lg);
}

video, canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    background: var(--black-primary);
}

.camera-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    border: 3px dashed var(--red-accent);
    border-radius: 50%;
    pointer-events: none;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

.capture-button {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--gradient-red-glow);
    border: 4px solid var(--white-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-red-lg);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.capture-button:hover {
    transform: translateX(-50%) scale(1.1);
    box-shadow: var(--glow-red-strong);
}

/* 카메라 외부 촬영 버튼 (카메라 화면 아래) */
.capture-button-external {
    padding: 16px 48px;
    font-size: 1.125rem;
    font-weight: 700;
    background: var(--gradient-red-glow);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-red-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.capture-button-external:hover {
    transform: scale(1.05);
    box-shadow: var(--glow-red-strong);
}

.capture-button-external:active {
    transform: scale(0.98);
}

/* ===========================
   이미지 갤러리
   =========================== */

.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--dark-red-3);
    transition: all 0.3s ease;
}

.gallery-item:hover {
    border-color: var(--red-primary);
    box-shadow: var(--shadow-red);
    transform: scale(1.05);
}

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

.gallery-item-date {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.9);
    color: var(--red-accent);
    font-size: 0.75rem;
    text-align: center;
    font-weight: 600;
}

/* ===========================
   로딩 & 애니메이션
   =========================== */

.loading {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--dark-red-3);
    border-top-color: var(--red-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 프로그레스 바 애니메이션 */
@keyframes progress {
    from {
        width: 0%;
    }
    to {
        width: 100%;
    }
}

/* 반짝이는 효과 */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* 바운스 효과 */
@keyframes bounce {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* 페이드 아웃 */
@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

/* ===========================
   반응형
   =========================== */

@media (max-width: 768px) {
    .page {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .page-header {
        margin-bottom: var(--spacing-md);
    }
    
    h1 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-sm);
    }
    
    h2 {
        font-size: 1.25rem;
    }
    
    h3 {
        font-size: 1.1rem;
    }
    
    .card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .card-header {
        margin-bottom: var(--spacing-xs);
        padding-bottom: var(--spacing-xs);
    }
    
    .card-title {
        font-size: 1rem;
    }
    
    .card-body {
        font-size: 0.9rem;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .logo {
        height: 100px;
        max-width: 400px;
    }
    
    header {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .camera-container {
        max-width: 100%;
    }
    
    .capture-button {
        width: 60px;
        height: 60px;
        bottom: 15px;
    }
    
    /* 텍스트 여백 최소화 */
    p {
        margin-bottom: var(--spacing-sm);
    }
    
    ol, ul {
        padding-left: 20px;
        margin-bottom: var(--spacing-sm);
    }
    
    li {
        margin-bottom: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .page {
        padding: var(--spacing-sm) var(--spacing-xs);
    }
    
    .logo {
        height: 80px;
        max-width: 350px;
    }
    
    h1 {
        font-size: 1.25rem;
        margin-bottom: var(--spacing-xs);
    }
    
    h2 {
        font-size: 1.1rem;
    }
    
    h3 {
        font-size: 1rem;
    }
    
    .page-header {
        margin-bottom: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }
    
    .card-header {
        margin-bottom: 4px;
        padding-bottom: 4px;
    }
    
    .card-title {
        font-size: 0.95rem;
        line-height: 1.2;
    }
    
    .card-body {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    .card-body p {
        margin-bottom: 4px;
    }
    
    .card-body ul,
    .card-body ol {
        margin-bottom: 4px;
        padding-left: 16px;
    }
    
    .card-body li {
        margin-bottom: 2px;
        line-height: 1.4;
    }
    
    .icon {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 0.875rem;
    }
    
    header {
        padding: var(--spacing-sm) var(--spacing-xs);
    }
    
    .camera-container {
        max-width: 100%;
    }
    
    .capture-button {
        width: 55px;
        height: 55px;
        bottom: 12px;
    }
    
    /* 초소형 화면 최적화 */
    .grid-2,
    .grid-3 {
        gap: var(--spacing-sm);
    }
    
    p {
        font-size: 0.9rem;
        line-height: 1.5;
        margin-bottom: var(--spacing-xs);
    }
    
    ol, ul {
        padding-left: 18px;
        margin-bottom: var(--spacing-xs);
    }
    
    li {
        font-size: 0.9rem;
        line-height: 1.5;
        margin-bottom: 2px;
        padding-left: 2px;
    }
}

/* ===========================
   유틸리티 클래스
   =========================== */

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}