/*
 * 디자인 기준: docs/design-system.md
 * Bootstrap 5 기본값 위에서 디자인 시스템과 다른 부분만 보완한다.
 */

:root {
    --bs-body-font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --bs-body-font-size: 14px;
    --bs-body-line-height: 20px;
    --bs-body-color: #6B7280;
    --bs-body-bg: #FFFFFF;
    --bs-emphasis-color: #374151;
    --bs-border-color: #E5E7EB;
    --bs-link-color: #3B82F6;
    --bs-link-color-rgb: 59, 130, 246;
    --bs-link-hover-color: #3B82F6;
    --bs-link-hover-color-rgb: 59, 130, 246;
}

/* Layout: 최대 너비 1200px, 좌우 24px (640px 이하 16px) */
.container {
    max-width: 1200px;
    padding-left: 24px;
    padding-right: 24px;
}

@media (max-width: 640px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .card-body {
        padding: 16px;
    }
}

/* Header */
.site-header {
    border-bottom: 1px solid #E5E7EB;
}

.site-header .navbar-brand {
    color: #374151;
    font-size: 18px;
    font-weight: 500;
    line-height: 28px;
}

.site-header .navbar-logo {
    display: block;
    width: auto;
    height: 28px;
}

.site-header .nav-link {
    color: #6B7280;
    font-weight: 500;
}

.site-header .nav-link:hover,
.site-header .nav-link.active {
    color: #3B82F6;
}

/* 메뉴 4개가 360px 폭에서도 한 줄에 들어가도록 좁은 화면에서만 좌우 여백 8px → 6px */
@media (max-width: 400px) {
    .site-header .navbar {
        --bs-navbar-nav-link-padding-x: 6px;
    }
}

/* 360px 미만: 넘치지 않도록 메뉴를 브랜드 아래 줄로 내린다 */
@media (max-width: 359px) {
    .site-header .navbar > .container {
        flex-wrap: wrap;
    }
}

/* Main: 하단 여백 48px */
.site-main {
    padding-top: 48px;
    padding-bottom: 48px;
}

/* Typography */
.text-metric {
    color: #374151;
    font-size: 30px;
    font-weight: 600;
    line-height: normal;
}

.text-title {
    color: #374151;
    font-size: 18px;
    font-weight: 500;
    line-height: 28px;
}

/* Home: 메인 메시지와 About 섹션 사이 48px (페이지 상·하단 여백과 같은 값) */
.home-about {
    margin-top: 48px;
    scroll-margin-top: 24px;
}

/* Current Focus (home About): 제목 Text-medium, 설명 Text */
.focus-list {
    display: grid;
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.focus-title {
    margin: 0;
    color: #374151;
    font-weight: 500;
}

.focus-text {
    margin: 0;
}

/* Creative Works (home About): Music · Books. Bootstrap 클래스에 의존하지 않음 */
.creative-works {
    display: grid;
    gap: 24px;
}

@media (min-width: 768px) {
    .creative-works {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.creative-works-heading {
    margin: 0 0 16px;
    color: #374151;
    font-size: 14px;
    font-weight: 600;
    line-height: 20px;
}

.creative-works-list {
    display: grid;
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.creative-work {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

/* 표지 칸 = Card 플레이스홀더(점선 영역). 표지 이미지가 있으면 그 위를 덮고, 로드 실패 시 제거되어 칸이 보인다 */
.creative-work-cover {
    position: relative;
    flex: none;
    box-sizing: border-box;
    width: 72px;
    height: 72px;
    border: 1px dashed #9CA3AF;
    border-radius: 10px;
    background: #F9FAFB;
}

.creative-work-cover-book {
    height: 104px;
}

.creative-work-cover img {
    position: absolute;
    inset: -1px;
    box-sizing: border-box;
    width: calc(100% + 2px);
    height: calc(100% + 2px);
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    background: #F9FAFB;
    object-fit: cover;
}

.creative-work-body {
    min-width: 0;
}

.creative-work-title {
    margin: 0;
    color: #374151;
    font-weight: 500;
    overflow-wrap: anywhere;
}

.creative-work-meta {
    margin: 0;
    font-size: 12px;
    line-height: normal;
}

.creative-work-action {
    margin-top: 8px;
}

.creative-works-more {
    margin-top: 24px;
    text-decoration: none;
}

.creative-works-more:hover {
    color: #FFFFFF;
}

/* 목록이 비었을 때: 안내(Tip) 박스 */
.creative-work-empty {
    padding: 8px 12px;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    background: #F9FAFB;
}

@media (max-width: 480px) {
    .creative-works-more {
        width: 100%;
        height: 44px;
    }
}

/* Card */
.card {
    --bs-card-border-color: #E5E7EB;
    --bs-card-border-radius: 8px;
    --bs-card-spacer-x: 24px;
    --bs-card-spacer-y: 24px;
    --bs-card-title-spacer-y: 16px;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

/* Footer: Divider 색 구분선 + Label 스타일 */
.site-footer {
    border-top: 1px solid #F3F4F6;
    font-size: 12px;
    line-height: normal;
}

/*
 * 아래 컴포넌트는 Bootstrap 클래스에 의존하지 않는다 (design-system.md 값만 사용).
 */

/* Button: Primary. Hover·Active·Focus는 design-system.md "구현 결정" */
.button-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    padding: 0 16px;
    border: 0;
    border-radius: 8px;
    background: #3B82F6;
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    cursor: pointer;
}

.button-primary:hover {
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.button-primary:active {
    box-shadow: none;
}

.button-primary:focus-visible {
    outline: 2px solid #3B82F6;
    outline-offset: 2px;
}

.button-primary:disabled {
    background: #60A5FA;
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    cursor: not-allowed;
}

/* Button: Secondary. Hover 배경 #F9FAFB (design-system.md "구현 결정") */
.button-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    height: 36px;
    padding: 0 16px;
    border: 1px solid #3B82F6;
    border-radius: 8px;
    background: transparent;
    color: #3B82F6;
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    text-decoration: none;
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    cursor: pointer;
}

.button-secondary:hover {
    background: #F9FAFB;
    color: #3B82F6;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.button-secondary:active {
    box-shadow: none;
}

.button-secondary:focus-visible {
    outline: 2px solid #3B82F6;
    outline-offset: 2px;
}

/* Text Input: 높이 36px(테두리 포함), 패딩 8 12, Focus 시 Primary 테두리 */
.form-field {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: #374151;
    font-weight: 500;
}

.form-input {
    display: block;
    box-sizing: border-box;
    width: 100%;
    height: 36px;
    padding: 7px 12px;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    background: #FFFFFF;
    color: #374151;
    font: inherit;
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

.form-input::placeholder {
    color: #6B7280;
    opacity: 1;
}

.form-input:focus {
    border-color: #3B82F6;
    outline: none;
}

.form-input:disabled {
    background: #F3F4F6;
    color: #9CA3AF;
}

.form-textarea {
    height: auto;
    min-height: 96px;
    resize: vertical;
}

.form-field-invalid .form-input {
    border-color: #EF4444;
}

.form-errors {
    margin-top: 8px;
}

.form-error {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    color: #EF4444;
    font-size: 12px;
    line-height: normal;
}

.form-error::before {
    content: "!";
    display: inline-flex;
    flex: none;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #EF4444;
    color: #FFFFFF;
    font-size: 10px;
    font-weight: 700;
}

/* Guestbook */
.guestbook-title {
    margin-bottom: 24px;
}

.guestbook {
    display: grid;
    gap: 24px;
    align-items: start;
}

@media (min-width: 768px) {
    .guestbook {
        grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
    }
}

/* Card와 같은 값: 배경·테두리·모서리 8px·tremor-card·패딩 24px */
.guestbook-card {
    padding: 24px;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    background: #FFFFFF;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.guestbook-heading {
    margin: 0 0 16px;
}

.guestbook-form .button-primary {
    margin-top: 8px;
}

.guestbook-entries {
    display: grid;
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.guestbook-entry-name {
    margin: 0;
    overflow-wrap: anywhere;
}

.guestbook-entry-date {
    display: block;
}

.guestbook-entry-message {
    margin: 16px 0 0;
    white-space: pre-line;
    overflow-wrap: anywhere;
}

/* Replies: 원글 카드 안에 Surface(Muted) 박스로 표시, 들여쓰기는 3단계까지 */
.guestbook-reply-link {
    display: inline-block;
    margin-top: 16px;
    color: #3B82F6;
    font-weight: 500;
    text-decoration: none;
}

.guestbook-reply-link:hover {
    text-decoration: underline;
}

.guestbook-reply-link:focus-visible {
    border-radius: 2px;
    outline: 2px solid #3B82F6;
    outline-offset: 2px;
}

.guestbook-replies {
    display: grid;
    gap: 16px;
    margin: 16px 0 0;
    padding: 0;
    list-style: none;
}

.guestbook-reply {
    padding: 16px;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    background: #F9FAFB;
}

.guestbook-reply-indent-2 {
    margin-left: 16px;
}

.guestbook-reply-indent-3 {
    margin-left: 32px;
}

.guestbook-reply-name {
    margin: 0;
    color: #374151;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.guestbook-reply-to,
.guestbook-reply-date {
    display: block;
    margin: 0;
    font-size: 12px;
    line-height: normal;
}

.guestbook-reply .guestbook-entry-message {
    margin-top: 8px;
}

.guestbook-reply .guestbook-reply-link {
    margin-top: 8px;
}

.guestbook-reply-form {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid #F3F4F6;
}

.guestbook-reply-form-heading {
    margin: 0 0 16px;
    color: #374151;
    font-size: 14px;
    font-weight: 600;
    line-height: 20px;
}

.guestbook-reply-form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

/* 빈 목록: 안내(Tip) 박스 */
.guestbook-empty {
    margin: 0;
    padding: 8px 12px;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    background: #F9FAFB;
}

@media (max-width: 640px) {
    .guestbook-card {
        padding: 16px;
    }
}

/* 480px 이하: 전체 너비·높이 44px (모바일 터치 영역) */
@media (max-width: 480px) {
    .guestbook-form .button-primary,
    .guestbook-reply-form-actions > * {
        width: 100%;
        height: 44px;
    }

    .guestbook-reply-indent-2 {
        margin-left: 8px;
    }

    .guestbook-reply-indent-3 {
        margin-left: 16px;
    }
}