:root {
    --page-bg-color: #f6f8fb;
    --page-text-color: #202327;
    --page-muted-color: #667085;

    --card-bg-color: #ffffff;
    --card-border-color: #e6eaf0;
    --card-shadow: 0 10px 30px rgba(18, 28, 45, 0.06);
    --card-blur: none;

    --nav-bg-color: rgba(255, 255, 255, 0.96);
    --nav-text-color: #202327;
    --nav-border-color: #e6eaf0;

    --link-color: #0a8f50;
    --primary-color: #0a8f50;
    --primary-color-dark: #077342;
    --primary-gradient: linear-gradient(135deg, #10a765 0%, #078247 100%);
}

[data-theme="dark"] {
    --page-bg-color: #111418;
    --page-text-color: #f3f5f7;
    --page-muted-color: #a3abb7;

    --card-bg-color: #1a2028;
    --card-border-color: #2b3440;
    --card-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);

    --nav-bg-color: rgba(17, 20, 24, 0.96);
    --nav-text-color: #ffffff;
    --nav-border-color: #2b3440;

    --link-color: #49d38d;
    --primary-color: #1fbf72;
    --primary-color-dark: #16a160;
    --primary-gradient: linear-gradient(135deg, #24c979 0%, #0e9f59 100%);
}

body {
    background-color: var(--page-bg-color);
    color: var(--page-text-color);
    font-family: "Pretendard", -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
    transition: background-color .3s ease, color .3s ease;
    background-image: linear-gradient(180deg, #ffffff 0, var(--page-bg-color) 340px);
    background-attachment: fixed;
}

*, *::before, *::after {
    box-sizing: border-box;
}

img, video, canvas, svg {
    max-width: 100%;
}

[data-theme="dark"] body {
    background-image: linear-gradient(180deg, #151a20 0, var(--page-bg-color) 340px);
}

a {
    color: var(--link-color);
    text-decoration: none;
    transition: all 0.2s ease;
}

a:hover {
    color: var(--primary-color-dark);
    opacity: 1;
}

.km-navbar {
    background-color: var(--nav-bg-color);
    backdrop-filter: var(--card-blur);
    -webkit-backdrop-filter: var(--card-blur);
    border-bottom: 1px solid var(--nav-border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.km-navbar .navbar-brand, .km-navbar .nav-link {
    color: var(--nav-text-color) !important;
}

.km-navbar .navbar-brand {
    letter-spacing: -0.02em;
}

.km-navbar .nav-link {
    border-radius: 999px;
    font-weight: 600;
    padding: 0.5rem 0.8rem;
}

.km-navbar .nav-link:hover,
.km-navbar .nav-link.active {
    background: rgba(10, 143, 80, 0.09);
    color: var(--primary-color) !important;
}

.km-card {
    background: var(--card-bg-color);
    backdrop-filter: var(--card-blur);
    -webkit-backdrop-filter: var(--card-blur);
    border: 1px solid var(--card-border-color);
    border-radius: 1rem;
    box-shadow: var(--card-shadow);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
    overflow: hidden;
    color: var(--page-text-color);
}

.km-card:hover {
    box-shadow: 0 14px 36px rgba(18, 28, 45, 0.09);
    border-color: #d7dde6;
}

[data-theme="dark"] .km-card:hover {
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.38);
    border-color: #3a4654;
}

.km-card-header {
    background: transparent;
    border-bottom: 1px solid var(--card-border-color);
    padding: 1.25rem 1.5rem;
    font-weight: 700;
    font-size: 1rem;
    color: var(--page-text-color);
}

.km-card-body {
    padding: 1.5rem;
    color: var(--page-text-color);
}

.km-card-footer {
    background: transparent;
    border-top: 1px solid var(--card-border-color);
    padding: 1rem 1.5rem;
}

.btn {
    border-radius: 0.65rem;
    padding: 0.5rem 1.25rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--primary-gradient);
    border: 1px solid transparent;
    box-shadow: 0 8px 18px rgba(10, 143, 80, 0.18);
    color: #ffffff !important;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-color-dark) 0%, #066f3f 100%);
    box-shadow: 0 10px 22px rgba(10, 143, 80, 0.24);
}

.btn-outline-primary {
    border-color: rgba(10, 143, 80, 0.35);
    color: var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #ffffff;
}

/* 뱃지 스타일 */
.km-logo-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: var(--card-bg-color);
    border: 1px solid var(--card-border-color);
    border-radius: 1rem;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    transition: all 0.3s ease;
    color: var(--page-text-color);
}

.km-logo-badge:hover {
    transform: scale(1.05);
    border-color: var(--link-color);
}

/* 댓글 등 텍스트 줄바꿈 */
.comment-content {
    white-space: pre-wrap;
    word-break: break-all;
}

/* 테마 토글 버튼 */
.theme-toggle-btn {
    border: 1px solid var(--card-border-color);
    background: var(--card-bg-color);
    color: var(--nav-text-color);
    border-radius: 0.75rem;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

/* 다크모드에서 Bootstrap의 text-muted 등이 너무 어두워지는 문제 해결 */
[data-theme="dark"] .text-muted,
[data-theme="dark"] .text-secondary,
[data-theme="dark"] .text-body-secondary {
    color: var(--page-muted-color) !important;
}

[data-theme="dark"] .text-dark {
    color: #f3f4f6 !important;
}

[data-theme="dark"] .bg-white {
    background-color: var(--card-bg-color) !important;
    color: var(--page-text-color) !important;
}

[data-theme="dark"] .border {
    border-color: var(--card-border-color) !important;
}

/* 다크모드에서 햄버거 버튼 아이콘 색상 반전 (흰색으로 보이게) */
[data-theme="dark"] .navbar-toggler-icon {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* 다크모드에서 햄버거 버튼 테두리 색상 조정 */
[data-theme="dark"] .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.1);
}

/* 2줄 이상일 때 말줄임표(...) 처리 */
.text-truncate-2 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2; /* 보여줄 줄 수 */
    -webkit-box-orient: vertical;
}

/* 알림 드롭다운 반응형 스타일 */
.km-notification-dropdown {
    min-width: 320px; /* PC 기본 너비 */
}

.min-w-0 {
    min-width: 0;
}

.board-card-media {
    height: 148px;
    background: linear-gradient(135deg, rgba(10, 143, 80, 0.1), rgba(36, 127, 214, 0.12));
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    border-bottom: 1px solid var(--card-border-color);
}

.board-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.board-card-media.is-empty {
    letter-spacing: 0;
}

.km-line-clamp-2 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.km-notification-row {
    background: var(--card-bg-color);
    color: var(--page-text-color);
}

.km-notification-row.is-unread {
    background: rgba(10, 143, 80, 0.06);
}

.km-notification-icon {
    width: 42px;
    height: 42px;
    border-radius: 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(10, 143, 80, 0.1);
    color: var(--primary-color);
}

.km-empty-state {
    border: 1px dashed var(--card-border-color);
    border-radius: 1rem;
    background: rgba(10, 143, 80, 0.035);
    color: var(--page-text-color);
}

[data-theme="dark"] .km-empty-state {
    background: rgba(31, 191, 114, 0.06);
}

.km-pwa-banner {
    background: linear-gradient(135deg, rgba(10, 143, 80, 0.09), rgba(36, 127, 214, 0.08)), var(--card-bg-color);
}

.km-pwa-icon {
    width: 44px;
    height: 44px;
    border-radius: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(10, 143, 80, 0.12);
    color: var(--primary-color);
    font-size: 1.25rem;
    flex: 0 0 auto;
}

.km-pwa-step {
    border: 1px solid var(--card-border-color);
    border-radius: 0.9rem;
    background: rgba(255, 255, 255, 0.58);
    padding: 1rem;
    height: 100%;
}

[data-theme="dark"] .km-pwa-step {
    background: rgba(255, 255, 255, 0.04);
}

.km-page-kicker {
    color: var(--primary-color);
    font-weight: 800;
    letter-spacing: 0;
}

.km-footer {
    border-top: 1px solid var(--card-border-color);
    background: rgba(255, 255, 255, 0.72);
}

[data-theme="dark"] .km-footer {
    background: rgba(26, 32, 40, 0.72);
}

@media (max-width: 768px) {
    body {
        background-image: linear-gradient(180deg, #ffffff 0, var(--page-bg-color) 220px);
    }

    [data-theme="dark"] body {
        background-image: linear-gradient(180deg, #151a20 0, var(--page-bg-color) 220px);
    }

    .container {
        --bs-gutter-x: 1.5rem;
    }

    .km-navbar .navbar-collapse {
        padding: 0.75rem 0 0.25rem;
    }

    .km-navbar .navbar-nav {
        gap: 0.35rem !important;
    }

    .km-navbar .nav-link {
        padding: 0.7rem 0.85rem;
    }

    .km-header-actions {
        width: 100%;
        flex-wrap: wrap;
        align-items: stretch !important;
    }

    .km-header-actions > .dropdown,
    .km-header-actions > .btn,
    .km-header-actions > a {
        flex: 1 1 auto;
    }

    .km-header-actions .dropdown > .btn,
    .km-header-actions > .btn,
    .km-header-actions > a {
        width: 100%;
        justify-content: center;
    }

    .km-card {
        border-radius: 0.85rem;
    }

    .km-pwa-banner .km-pwa-actions {
        width: 100%;
    }

    .km-pwa-banner .km-pwa-actions .btn,
    .km-pwa-banner .km-pwa-actions a {
        flex: 1 1 auto;
        justify-content: center;
    }

    .km-card-header,
    .km-card-body,
    .km-card-footer {
        padding: 1rem;
    }

    .btn {
        min-height: 42px;
    }

    .display-6 {
        font-size: 2rem;
        line-height: 1.2;
    }

    .lead {
        font-size: 1rem;
        line-height: 1.55;
    }

    .pagination {
        flex-wrap: wrap;
    }

    .page-link {
        min-width: 40px;
        text-align: center;
    }

    .km-notification-dropdown {
        position: fixed !important;
        top: 60px !important; /* 헤더 높이만큼 띄움 */
        left: 3% !important;
        right: 3% !important;
        width: 94% !important;
        min-width: auto !important;
        transform: none !important; /* Bootstrap의 transform 제거 */
        margin: 0 auto !important;
        max-height: 80vh;
        overflow-y: auto;
    }
}

@media (max-width: 575px) {
    .container {
        --bs-gutter-x: 1rem;
    }

    .km-footer {
        margin-top: 2rem !important;
    }

    .km-footer .container {
        padding-top: 1.25rem !important;
        padding-bottom: 1.25rem !important;
    }

    .km-footer .d-flex {
        align-items: flex-start !important;
    }

    .board-card-media {
        height: 128px;
    }
}