/* ===== 바무 통합 스타일 — 5060 친화 설계 ===== */

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

:root {
    --color-primary: #2563EB;
    --color-primary-dark: #1E40AF;
    --color-primary-light: #EFF6FF;
    --color-accent: #10B981;
    --color-warning: #F59E0B;
    --color-danger: #DC2626;
    --color-text: #1F2937;
    --color-text-light: #6B7280;
    --color-bg: #FFFFFF;
    --color-bg-soft: #F9FAFB;
    --color-border: #E5E7EB;
    --font-base: 20px;
    --font-small: 17px;
    --font-large: 24px;
    --font-title: 30px;
    --font-hero: 40px;
    --space-sm: 10px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 40px;
    --space-xxl: 64px;
    --radius: 14px;
    --shadow: 0 2px 12px rgba(0,0,0,0.07);
    --shadow-hover: 0 6px 24px rgba(37,99,235,0.13);
    --max-width: 820px;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: var(--font-base);
    line-height: 1.65;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    width: 100%;
}

/* ===== 헤더 ===== */
.header {
    background: #fff;
    border-bottom: 2px solid var(--color-primary-light);
    padding: 14px 0;
    position: sticky;
    top: 0;
    z-index: 200;
    box-shadow: 0 2px 12px rgba(37,99,235,0.07);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    width: 100%;
}

.logo {
    font-size: 26px;
    font-weight: 900;
    color: var(--color-primary);
    cursor: default;
    user-select: none;
    letter-spacing: -0.5px;
    text-decoration: none;
}

.logo-ai {
    font-size: 15px;
    color: var(--color-text-light);
    font-weight: 500;
    margin-left: 3px;
    vertical-align: super;
}

.menu-toggle {
    background: none;
    border: 2px solid var(--color-border);
    font-size: 22px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--color-text);
    transition: all 0.2s;
}

.menu-toggle:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

.nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 8px 24px rgba(0,0,0,0.10);
    border-top: 2px solid var(--color-primary-light);
}

.nav.open {
    display: block;
}

.nav ul {
    list-style: none;
    padding: var(--space-md);
    max-width: var(--max-width);
    margin: 0 auto;
}

.nav li {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.nav li:last-child {
    border-bottom: none;
}

.nav a {
    display: block;
    font-size: var(--font-base);
    color: var(--color-text);
    font-weight: 500;
    text-decoration: none;
}

/* ===== 히어로 ===== */
.hero {
    padding: var(--space-xxl) 0 var(--space-xl);
    text-align: center;
    background: linear-gradient(180deg, #F0F9FF 0%, #FFFFFF 100%);
}

.hero-title {
    font-size: var(--font-hero);
    font-weight: 900;
    color: var(--color-text);
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

.hero-title strong {
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: var(--font-base);
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
}

/* ===== 질문 입력창 ===== */
.chat-input-container {
    max-width: 640px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.chat-input-box {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-md);
    box-shadow: var(--shadow);
    transition: border-color 0.2s;
}

.chat-input-box:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.chat-input {
    width: 100%;
    min-height: 80px;
    border: none;
    outline: none;
    font-size: var(--font-base);
    font-family: inherit;
    resize: none;
    line-height: 1.6;
    color: var(--color-text);
}

.chat-input::placeholder {
    color: var(--color-text-light);
}

.chat-submit-btn {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-base);
    font-weight: 700;
    border-radius: var(--radius);
    cursor: pointer;
    min-height: 60px;
    transition: background 0.2s;
    font-family: inherit;
}

.chat-submit-btn:hover:not(:disabled) {
    background: var(--color-primary-dark);
}

.chat-submit-btn:disabled {
    background: var(--color-text-light);
    cursor: not-allowed;
}

/* ===== 답변 영역 ===== */
.answer-area {
    max-width: 640px;
    margin: var(--space-xl) auto 0;
    padding: 0 var(--space-md);
}

.answer-box {
    background: white;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius);
    padding: var(--space-lg);
    box-shadow: var(--shadow);
    text-align: left;
}

.answer-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.answer-icon {
    font-size: 28px;
}

.answer-label {
    font-size: var(--font-base);
    font-weight: 700;
    color: var(--color-primary);
}

.answer-content {
    font-size: var(--font-base);
    line-height: 1.8;
    color: var(--color-text);
    white-space: pre-wrap;
    word-break: keep-all;
}

.answer-actions {
    margin-top: var(--space-lg);
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.btn-again {
    background: white;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-base);
    font-weight: 700;
    border-radius: var(--radius);
    cursor: pointer;
    min-height: 56px;
    flex: 1;
    min-width: 140px;
    transition: all 0.2s;
    font-family: inherit;
}

.btn-again:hover {
    background: var(--color-primary);
    color: white;
}

.answer-disclaimer {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px dashed var(--color-border);
    font-size: 14px;
    color: var(--color-text-light);
    text-align: center;
    line-height: 1.5;
}

/* ===== 로딩 ===== */
.loading-area {
    max-width: 640px;
    margin: var(--space-xl) auto 0;
    padding: 0 var(--space-md);
    text-align: center;
}

.loading-box {
    background: white;
    border: 2px dashed var(--color-primary);
    border-radius: var(--radius);
    padding: var(--space-xl);
}

.loading-dots {
    display: inline-flex;
    gap: 8px;
    margin-bottom: var(--space-md);
}

.loading-dots span {
    width: 14px;
    height: 14px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
.loading-dots span:nth-child(3) { animation-delay: 0; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

.loading-text {
    font-size: var(--font-base);
    color: var(--color-text-light);
    margin: 0;
}

/* ===== 추천 질문 ===== */
.suggested-questions {
    padding: var(--space-xl) 0;
    background: var(--color-bg-soft);
}

.section-title {
    font-size: var(--font-title);
    font-weight: 700;
    color: var(--color-text);
    text-align: center;
    margin-bottom: var(--space-lg);
}

.suggested-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    list-style: none;
    max-width: 640px;
    margin: 0 auto;
}

.suggested-item {
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    font-size: var(--font-base);
    transition: all 0.2s;
    min-height: 60px;
    display: flex;
    align-items: center;
}

.suggested-item:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.suggested-item::before {
    content: "💬";
    margin-right: var(--space-md);
    font-size: var(--font-large);
    flex-shrink: 0;
}

/* ===== 경보 배너 ===== */
.alert-banner {
    background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%);
    border-left: 6px solid var(--color-warning);
    padding: var(--space-lg);
    margin: var(--space-xl) auto;
    border-radius: var(--radius);
    max-width: var(--max-width);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.alert-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-size: var(--font-base);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.alert-text {
    font-size: var(--font-small);
    color: var(--color-text);
    line-height: 1.5;
}

/* ===== 카테고리 ===== */
.categories {
    padding: var(--space-xl) 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.category-card {
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-lg);
    text-align: center;
    text-decoration: none;
    transition: all 0.2s;
    min-height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.category-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    text-decoration: none;
}

.category-icon {
    font-size: 40px;
    margin-bottom: var(--space-sm);
}

.category-name {
    font-size: var(--font-base);
    font-weight: 700;
    color: var(--color-text);
}

.category-desc {
    font-size: var(--font-small);
    color: var(--color-text-light);
    margin-top: 4px;
}

/* ===== 바무 소개 ===== */
.intro-section {
    padding: var(--space-xl) 0;
    text-align: center;
    background: var(--color-bg-soft);
}

.intro-text {
    font-size: var(--font-base);
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

/* ===== 푸터 ===== */
.footer {
    background: #1F2937;
    color: white;
    padding: var(--space-xl) 0;
    text-align: center;
    margin-top: var(--space-xxl);
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    list-style: none;
    margin-bottom: var(--space-lg);
}

.footer-links a {
    color: #D1D5DB;
    font-size: var(--font-small);
    text-decoration: none;
}

.footer-links a:hover {
    color: white;
}

.footer-info {
    font-size: var(--font-small);
    color: #9CA3AF;
    line-height: 1.7;
}

/* ===== 반응형: 모바일 ===== */
@media (max-width: 600px) {
    :root {
        --font-hero: 28px;
        --font-title: 24px;
        --font-base: 18px;
        --font-small: 16px;
    }

    .hero {
        padding: var(--space-xl) 0;
    }

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 400px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 반응형: PC 큰 화면 ===== */
@media (min-width: 1024px) {
    .category-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    body {
        background: linear-gradient(to bottom, #F0F9FF 0%, #FFFFFF 400px, #FFFFFF 100%);
    }
}

/* ===== 접근성 ===== */
button:focus,
a:focus,
textarea:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}