/* 사이드바 */
.sidebar {
    background-color: #f8f9fa;
    min-height: calc(100vh - 56px);
    border-right: 1px solid #dee2e6;
}
.sidebar .nav-link {
    color: #333;
    padding: 0.4rem 0.75rem;
}
.sidebar .nav-link:hover {
    background-color: #e9ecef;
    color: #0d6efd;
}
.sidebar .nav-link.active {
    background-color: #0d6efd;
    color: white;
}

/* 관리자 사이드바 */
.admin-sidebar {
    background-color: #212529;
    min-height: calc(100vh - 56px);
}
.admin-sidebar .nav-link {
    color: #adb5bd;
    padding: 0.5rem 0.75rem;
}
.admin-sidebar .nav-link:hover {
    background-color: #343a40;
    color: white;
}

/* 메일 목록 */
.mail-list .mail-row {
    cursor: pointer;
    border-bottom: 1px solid #eee;
    padding: 0.75rem 0.5rem;
}
.mail-list .mail-row:hover {
    background-color: #f8f9fa;
}
.mail-list .mail-row.unread {
    font-weight: 600;
    background-color: #fff;
}
.mail-list .mail-row.read {
    color: #666;
}
.mail-list .mail-from {
    font-size: 0.95em;
}
.mail-list .mail-subject {
    color: inherit;
    text-decoration: none;
}
.mail-list .mail-date {
    color: #999;
    font-size: 0.85em;
    white-space: nowrap;
}

/* 메일 상세 */
.mail-detail .mail-header {
    border-bottom: 1px solid #dee2e6;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}
.mail-detail .mail-body-iframe {
    width: 100%;
    min-height: 400px;
    border: none;
}

/* 별표 */
.star-toggle {
    cursor: pointer;
    color: #ccc;
}
.star-toggle.starred {
    color: #ffc107;
}

/* 로그인 */
.login-body {
    background: linear-gradient(135deg, #0d6efd 0%, #6610f2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-wrapper {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}
.login-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

/* 통계 카드 */
.stat-card {
    border-radius: 0.5rem;
    padding: 1.25rem;
    color: white;
}
.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
}
.stat-card .stat-label {
    opacity: 0.9;
    font-size: 0.9em;
}